commit 45376aebcb0c73a8d295643dbc8722ac6cf90916
Author: Pierre <pierre@pgironde.fr>
Date:   Fri May 31 14:50:50 2024 +0200

    migration from ha-cantegrill repo

diff --git a/adexpressioncontext.py b/adexpressioncontext.py
new file mode 100644
index 0000000..653757c
--- /dev/null
+++ b/adexpressioncontext.py
@@ -0,0 +1,170 @@
+import pyparsing as pp
+from expressionparser import BaseExpressionContext
+
+class ADExpressionContext(BaseExpressionContext):
+    def __init__(self,appdaemon_api, sensor_existence_validation = True):
+        self.appdaemon_api = appdaemon_api
+        self.variables = {}        
+        self.constants = list()
+        self.sensor_aliases = list()
+        self.parser = None
+        self.entities_to_listen = dict()
+        self.variables_parsed_data = dict()
+        self.sensors_default_value = dict()
+        self.sensor_states = dict()
+        self.sensor_existence_validation = sensor_existence_validation
+
+        self.declare_default_constants()
+
+    def reset(self): 
+        self.sensor_states = dict()
+
+    def declare_default_constants(self):
+        self.declare_constant("True",True)
+        self.declare_constant("False",False)
+        self.declare_constant("None",None)
+
+    class EvaluateBase:      
+        def get_value(self,context): return None
+        def get_sensor_name_with_attribute(self,context): return None
+
+    class EvaluateConstant(EvaluateBase):
+        def __init__(self, tokens):
+            assert len(tokens) == 1
+            self.constant_name = tokens[0]
+
+        def get_value(self,context):             
+            return context.get_constant_value(self.constant_name)
+
+    class EvaluateSensor(EvaluateBase):
+        def __init__(self, tokens):
+            assert len(tokens) == 1            
+            self.tokens = tokens[0]
+
+        def get_value(self,context): 
+            sensor_name_with_attribute = self.get_sensor_name_with_attribute(context)
+
+            if sensor_name_with_attribute[1] != None:
+                return context.appdaemon_api.get_state(sensor_name_with_attribute[0], attribute = sensor_name_with_attribute[1])
+            else:
+                return context.appdaemon_api.get_state(sensor_name_with_attribute[0])            
+
+        def get_sensor_name_with_attribute(self,context): 
+            if isinstance(self.tokens,ADExpressionContext.EvaluateConstant):
+                sensor_name = self.tokens.get_value(context)
+            else:
+                assert len(self.tokens) == 3
+                sensor_name = f"{self.tokens[0]}{self.tokens[1]}{self.tokens[2]}"
+            return (sensor_name,None) #None is for the actual state of the sensor, not an attribute
+
+    class EvaluateAttribute(EvaluateSensor):
+        def get_sensor_name_with_attribute(self,context): 
+            sensor_name_with_attribute = self.tokens[0].get_sensor_name_with_attribute(context)
+            return (sensor_name_with_attribute[0],self.tokens[2])
+
+    def create_variable_parser(self):
+        separator = pp.Literal(".")
+        word = pp.Word(pp.alphanums + "_")
+        constant = pp.oneOf([constant for constant in self.constants]).set_parse_action(self.EvaluateConstant)
+        sensor_alias = pp.oneOf([constant for constant in self.sensor_aliases]).set_parse_action(self.EvaluateConstant)
+        sensor = sensor_alias | pp.Group(word + separator + word)
+        sensor.set_parse_action(self.EvaluateSensor)
+        sensor_with_attribute = pp.Group(sensor + separator + word).set_parse_action(self.EvaluateAttribute)
+
+        expression = sensor_with_attribute | constant | sensor
+
+        return expression
+
+    def add_variable(self,variable_name):
+        parsed_data = self.evaluate_variable_expression(variable_name)
+
+        #Couldn't parse the variable, it's either an unknown constant or a bad formed string
+        if parsed_data == None:
+            return False
+        
+        sensor_name_with_attribute = parsed_data.get_sensor_name_with_attribute(self)
+
+        self.variables_parsed_data[variable_name] = parsed_data 
+        if sensor_name_with_attribute != None:
+            sensor_name = sensor_name_with_attribute[0]
+            
+            if self.sensor_existence_validation and sensor_name not in self.sensors_default_value and not self.appdaemon_api.entity_exists(sensor_name):
+                return False
+
+            if not sensor_name in self.entities_to_listen:
+                self.entities_to_listen[sensor_name] = []
+
+            if not sensor_name_with_attribute[1] in self.entities_to_listen[sensor_name]:
+                self.entities_to_listen[sensor_name].append(sensor_name_with_attribute[1])
+
+        return True
+
+    def get_variable_value(self,variable_name): 
+        parsed_data = self.variables_parsed_data[variable_name]
+        sensor_name_with_attribute = parsed_data.get_sensor_name_with_attribute(self)
+        if sensor_name_with_attribute == None:
+            return parsed_data.get_value(self)
+        else:
+            if sensor_name_with_attribute[1] != None:
+                key_name = f"{sensor_name_with_attribute[0]}.{sensor_name_with_attribute[1]}"
+            else:
+                key_name = sensor_name_with_attribute[0]
+
+            if key_name in self.sensor_states:
+                return self.sensor_states[key_name]
+            else:
+                if sensor_name_with_attribute[1] != None:
+                    value = self.appdaemon_api.get_state(sensor_name_with_attribute[0], attribute = sensor_name_with_attribute[1])
+                    # accessing an attribute of unavailable entity should return unavailable
+                    # whereas accessing an attribute that doesn't exist return None
+                    if value == None and self.appdaemon_api.get_state(sensor_name_with_attribute[0]) == 'unavailable':
+                        return 'unavailable'
+                else:
+                    if self.appdaemon_api.entity_exists(sensor_name_with_attribute[0]):
+                        value = self.appdaemon_api.get_state(sensor_name_with_attribute[0])
+                    else: #we should always have a default value if we get here
+                        value = self.sensors_default_value[sensor_name_with_attribute[0]]
+                
+                self.sensor_states[key_name] = value
+                return value     
+
+    def get_entities_to_listen(self):
+        return self.entities_to_listen
+
+    def get_constant_value(self,name): return self.variables[name]
+
+    def declare_constant(self,name : str,value):
+        def is_a_sensor(string):
+            if isinstance(string,str):
+                splitted_string = string.split('.')
+                if len(splitted_string) == 2:
+                    for part in splitted_string:
+                        if not part.replace('_', '').isalnum() or not part.isascii():
+                            return False
+                    return True
+            return False
+
+
+        assert name not in self.variables, f"Constant {name} already exist with value {self.variables[name]}"
+        assert name.replace('_', '').isalnum() and name.isascii(), f"Invavalid constant name: {name}"
+        self.variables[name] = value
+        if is_a_sensor(value):
+            self.sensor_aliases.append(name)
+        else:
+            self.constants.append(name)
+
+        self.parser = None #adding new constant need to reset the parser
+
+    def declare_sensor_alias_default_value(self, alias, default_value):
+        assert alias in self.variables, f"Unknown alias {alias} please declare it first"
+        sensor_name = self.variables[alias]
+        assert sensor_name not in self.sensors_default_value, f"{sensor_name} has already a default value {self.sensors_default_value[sensor_name]}"
+
+        self.sensors_default_value[sensor_name] = default_value
+
+    def evaluate_variable_expression(self,expression_string):
+        if not self.parser:
+            self.parser = self.create_variable_parser()
+
+        try: return self.parser.parseString(expression_string,parse_all=True)[0]
+        except pp.ParseException: return None
\ No newline at end of file
diff --git a/eventhandler.py b/eventhandler.py
new file mode 100644
index 0000000..c5ae76b
--- /dev/null
+++ b/eventhandler.py
@@ -0,0 +1,99 @@
+import appdaemon.plugins.hass.hassapi as hass
+import pickle
+import os
+
+class EventDispatcher:
+    def __init__(self,ad_api,event_name,callback,event_data,reset_data,event_context):
+        self.event_name = event_name
+        self.callback = callback
+        self.event_data = event_data
+        self.reset_data = reset_data
+        self.waiting_for_reset = False
+        self.event_context = event_context
+        self.ad_api = ad_api
+        if event_data == None:
+            self.ad_api.listen_event(self.on_event,event_name)
+        else:
+            event_kwargs = {}
+            for key,value in event_data.items(): #when we have dict in event_data, we usually only want a partial match, we deal with that in process_event
+                if not isinstance(value,dict):
+                    event_kwargs[key] = value
+            self.ad_api.listen_event(self.on_event,event_name,**event_kwargs)
+            if reset_data:
+                reset_data_kwargs = {}
+                for key,value in reset_data.items(): #when we have dict in event_data, we usually only want a partial match, we deal with that in process_event
+                    if not isinstance(value,dict):
+                        reset_data_kwargs[key] = value
+
+                if reset_data_kwargs != event_kwargs:
+                    self.ad_api.listen_event(self.on_event,event_name,**reset_data_kwargs)
+
+    def on_event(self, event_name, data, kwargs):
+        self.process_event(data)
+
+    def process_event(self,data):
+        def are_data_matching(ref_data, data):
+            if ref_data != None:
+                for key in ref_data:
+                    if not key in data: 
+                        return False
+                    if isinstance(ref_data[key],dict):
+                        if not are_data_matching(ref_data[key],data[key]):
+                            return False
+                    elif ref_data[key] != data[key]:
+                        return False
+            return True
+
+        #lets see if those args match
+        match_event_data = are_data_matching(self.event_data,data)
+        match_reset_data = are_data_matching(self.reset_data,data)
+
+        #special threatment for event
+        if match_event_data and not self.waiting_for_reset:
+            if self.reset_data != None: 
+                self.waiting_for_reset = True
+            
+            self.callback(self.event_name, self.event_data ,self.event_context)
+            return True
+
+        if self.reset_data != None and match_reset_data:
+            self.waiting_for_reset = False
+
+        return False
+
+class EventHandler:
+    def __init__(self, ad_api,events_block,callback,event_context = None): #event_context is passed back to the CB has a context
+        def register_event_with_params(event_block,callback,event_context):            
+            self.add_dispatcher(event_block['event_name'],callback,event_block['event_data'] if 'event_data' in event_block else None, event_block['reset_data'] if 'reset_data' in event_block else None,event_context)
+
+        self.__ad_api = ad_api
+        self.event_dispatchers = []
+
+        #try: 
+        for event_block in events_block.values():
+            register_event_with_params(event_block,callback,event_context)
+        #except (AttributeError):
+        #    self.log(f"Format not supported : {events_block}")
+
+    def log(self,message,**kwargs):
+        self.__ad_api.log(message,**kwargs)
+
+    def add_dispatcher(self,event_name,callback,event_data = None,reset_data = None ,event_context = None):
+        self.log(f'Registering dispatcher {callback.__name__} for event "{event_name}" ({event_data})')
+        dispatcher = EventDispatcher(self.__ad_api,event_name,callback,event_data,reset_data,event_context)
+        self.event_dispatchers.append(dispatcher)
+
+        # if not event_name in self.event_dispatchers:
+        #     self.event_dispatchers[event_name] = list()
+        #     self.log(f"listening event {event_name}")
+        #     self.__ad_api.listen_event(self._on_event_internal,event_name)
+
+        # self.event_dispatchers[event_name].append(dispatcher)
+
+    # def _on_event_internal(self, event_name, data, kwargs):
+    #     if event_name in self.event_dispatchers:
+    #         for dispatcher in self.event_dispatchers[event_name]:
+    #             if dispatcher.process_event(data) == True:
+    #                 break
+    #     else:
+    #         self.log(f"{event_name} has no dispatcher registered",level="WARNING")
\ No newline at end of file
diff --git a/expressionparser.py b/expressionparser.py
new file mode 100644
index 0000000..d27e823
--- /dev/null
+++ b/expressionparser.py
@@ -0,0 +1,354 @@
+import pyparsing as pp
+import threading
+import datetime
+
+'''Base ExpressionContext for the parser
+MUST be implemented :
+get_variable_value(self,variable_name) is called when evaluating the expression to retrieve the value of a variable
+
+optional:
+add_variable(self,variable_name) is called when a variable is encounter during the parsing of the expression
+
+reset(self) is called before a new evaluation
+
+'''
+class BaseExpressionContext:
+    def add_variable(self,variable_name): return True
+
+    def get_variable_value(self,variable_name): return None
+
+    def reset(self): pass
+
+class ParsingException(Exception):
+    def __init__(self, message = None, expression_string = None, char_pos = -1):
+        self.char_pos = char_pos
+        self.message = message
+        self.expression_string = expression_string
+
+    def __str__(self): 
+        string = ""
+        if self.expression_string:
+            string += f'Error parsing string "{self.expression_string}"'
+            if self.char_pos >= 0:
+                string += f' at character {self.char_pos}'
+            string += ':'
+        elif self.char_pos >= 0:
+            string += f'Parsing error at character {self.char_pos}'
+        if self.message:
+            string += self.message
+        
+        return string
+
+class EvaluationException(Exception):
+    def __init__(self, message = None, expression_string = None, char_pos = -1, operands = []):
+        self.char_pos = char_pos
+        self.message = message
+        self.expression_string = expression_string
+        self.operands = operands
+
+    def __str__(self): 
+        string = ""
+        if self.expression_string:
+            string += f'Error evaluating "{self.expression_string}"'
+            if self.char_pos >= 0:
+                string += f' at character {self.char_pos}'
+            string += ':'
+        elif self.char_pos >= 0:
+            string += f'Parsing error at character {self.char_pos}'
+        if self.message:
+            string += self.message
+        
+        return string
+
+class EvaluateBase(object): 
+    def eval_bool(self) : return self.convert_to_bool(self.eval())
+
+    @staticmethod
+    def convert_to_bool(value):
+        if value == 'off': return False
+        if value == 0: return False
+        if value == 'False': return False 
+        if value == 'false': return False
+        if value == False: return False
+        if value == None: return False
+        # this should be handle explicitely by the condition
+        # edit: this is actually usefull if don't want disable to be evaluated as true
+        if value == 'unavailable': return False
+
+        return True
+
+    @staticmethod
+    def convert_python_type(value):
+        if value == None: return None
+
+        if type(value) == str:
+            #converting to bool        
+            if value == 'False': return False 
+            if value == 'false': return False
+            #if value == False: return False
+
+            if value == 'True': return True 
+            if value == 'true': return True
+            #if value == True: return True
+            
+            #Converting "None" to None
+            if value == "none" or value == "None": return None
+            
+            #converting to int
+            try: return int(value)
+            except: pass
+
+            #converting to float
+            try: return float(value) 
+            except: pass
+
+            #converting to datetime
+            try: return datetime.datetime.strptime(value,"%Y-%m-%dT%H:%M:%S.%f%z")
+            except: pass
+
+            # this should really be a string
+            return value
+        else: 
+            #it's probably already been converted
+            return value 
+
+class EvaluateOperand(EvaluateBase):
+    def __init__(self, expression_string: str, location: int, tokens: pp.ParseResults):
+        self.value = tokens[0]
+
+    def __str__(self): return str(self.eval())
+
+    def eval(self): pass
+    def set_context(self,context): pass
+
+class EvaluateNumber(EvaluateOperand):    
+    def eval(self): return EvaluateBase.convert_python_type(self.value)
+        # try: return float(self.value)
+        # except: return float('nan')
+
+class EvaluateString(EvaluateOperand):
+    def eval(self): return str(self.value)
+
+class EvaluateVariable(EvaluateOperand):
+    def __init__(self, expression_string: str, location: int, tokens: pp.ParseResults):
+        super().__init__(expression_string, location, tokens)
+        self.context : BaseExpressionContext = None
+        self.expression_string = expression_string
+        self.location = location
+
+    def eval(self):
+        return_value = self.context.get_variable_value(self.value)
+        return EvaluateBase.convert_python_type(return_value)
+        # if return_value == None: 
+        #     return None
+
+        # if type(return_value) == bool: return return_value
+
+        # try: return_value = float(return_value)
+        # except: pass
+
+        # return return_value
+
+    def __str__(self): return f"{self.value}[{self.eval()}]"    
+            
+    def set_context(self,context : BaseExpressionContext): 
+        self.context = context
+        if not self.context.add_variable(self.value):
+            raise ParsingException(message = f"Unknown variable : {self.value}",char_pos= self.location, expression_string=self.expression_string)
+
+def opPair(tokenlist):
+    #Return pairs of tokens to the caller as a generator.
+    it = iter(tokenlist)
+    while 1:
+        try: yield(next(it), next(it))
+        except StopIteration: break
+
+class EvaluateOperator(EvaluateBase):
+    def __init__(self, expression_string: str, location: int, tokens: pp.ParseResults):
+        self.value = tokens[0]
+        self.expression_string = expression_string
+        self.location = location
+
+    def set_context(self,context): 
+        for element in self.value:      
+            if isinstance(element,EvaluateBase): element.set_context(context)    
+
+class EvaluatSignOp(EvaluateOperator):    
+    def eval(self):         
+        assert(len(self.value) == 2)
+        if self.value[0] == '-':
+            return -self.value[1].eval()
+        else:
+            return self.value[1].eval()
+
+class EvaluateNot(EvaluateOperator):
+
+    operators = {
+        "not": ["not", lambda a: not EvaluateNot.convert_to_bool(a)]
+        }
+
+    def eval(self):
+        for op, val in opPair(self.value[0:]):
+            fn = EvaluateNot.operators[op][1]
+            val2 = val.eval_bool()
+            val = fn(val2)
+        return val
+
+    def __str__(self):
+        return " ".join([str(v) for v in self.value])
+
+class EvaluateBinaryOp(EvaluateOperator):
+
+    def eval(self):
+        val1 = self.value[0].eval()
+        for op, val in opPair(self.value[1:]):
+            fn = self.operators[op][1]
+            if not self.should_skip_second_operand(op,val1):
+                val2 = val.eval()
+                try: val1 = fn(val1, val2)
+                except TypeError: raise EvaluationException(message = f"Couldn't not evaluate '{val1} {op} {val2}'",char_pos= self.location, expression_string=self.expression_string,operands = [val1,val2])
+        return val1
+
+    def should_skip_second_operand(self,operator,first_value): return False
+
+    def __str__(self):
+        string = "("
+        val1 = str(self.value[0])
+        for op, val in opPair(self.value[1:]):
+            fn = self.operators[op][0]
+            if not self.should_skip_second_operand(op,self.value[0].eval()):
+                val2 = val
+            else: val2 = "[Skipped]"
+            string += f"{val1} {fn} {val2}"
+
+        evaluation_result = self.eval()
+        try: evaluation_result = self.eval()
+        except TypeError: evaluation_result = "Evaluation Error"
+
+        return string + f")[{evaluation_result}]"
+
+class EvaluateMulOp(EvaluateBinaryOp):
+
+    operators = {
+        "*": ["*", lambda a, b: a * b],
+        "/": ["/", lambda a, b: a / b],
+        }    
+
+class EvaluatePlusOp(EvaluateBinaryOp):
+
+    operators = {
+        "+": ["+", lambda a, b: a + b],
+        "-": ["-", lambda a, b: a - b],
+        }
+
+class EvaluateComparison(EvaluateBinaryOp):
+
+    operators = {
+        "<":  ["<", lambda a, b: EvaluateBase.convert_python_type(a) < EvaluateBase.convert_python_type(b)],
+        ">":  [">", lambda a, b: EvaluateBase.convert_python_type(a) > EvaluateBase.convert_python_type(b)],
+        ">=": [">=", lambda a, b: EvaluateBase.convert_python_type(a) >= EvaluateBase.convert_python_type(b)],
+        "<=": ["<=", lambda a, b: EvaluateBase.convert_python_type(a) <= EvaluateBase.convert_python_type(b)],
+        "==": ["==", lambda a, b: EvaluateBase.convert_python_type(a) == EvaluateBase.convert_python_type(b)],
+        "!=": ["!=", lambda a, b: EvaluateBase.convert_python_type(a) != EvaluateBase.convert_python_type(b)],
+        }
+
+class EvaluateOrAnd(EvaluateBinaryOp):
+
+    operators = {
+        "and": ["and", lambda a, b: EvaluateBase.convert_to_bool(a) and EvaluateBase.convert_to_bool(b)],
+        "or": ["or", lambda a, b: EvaluateBase.convert_to_bool(a) or EvaluateBase.convert_to_bool(b)],
+        }
+
+    def should_skip_second_operand(self,operator,first_value):
+        if first_value == False and operator == "and":            
+            return True
+        if first_value == True and operator == "or":
+            return True
+        return False
+
+class EvaluateTernary(EvaluateOperator):
+    def eval(self):
+        ret = self.value[0].eval_bool()
+        i = 1
+        while i < len(self.value):
+            ret = self.value[i+1].eval() if ret else self.value[i+3].eval()
+            i += 4
+        return ret
+
+    def __str__(self):
+        condition = self.value[0].eval_bool()
+        return f"({self.value[0]} {self.value[1]} {self.value[2] if condition else '[Skipped]'} {self.value[3]} {self.value[4] if not condition else '[Skipped]'})[{self.eval()}]"    
+
+def create_parser():
+    pp.ParserElement.enablePackrat()
+    #sys.setrecursionlimit(3000)
+
+    #floatNumber = pp.Regex(r'[-]?\d+(\.\d*)?([eE][-+]?\d+)?').setParseAction(EvaluateNumber)
+    floatNumber = pp.pyparsing_common.real.setParseAction(EvaluateNumber)
+    intNumber = pp.pyparsing_common.signed_integer.setParseAction(EvaluateNumber)
+    variable = pp.Word(pp.alphanums + "_.").setParseAction(EvaluateVariable)
+    string = pp.QuotedString(quoteChar="'").setParseAction(EvaluateString)
+
+
+    operand = floatNumber | intNumber | variable | string
+
+    signop = pp.oneOf(("+", "-"))
+    multop = pp.oneOf(("*", "/"))
+    plusop = pp.oneOf(("+", "-"))
+    comparisonOp = pp.oneOf(("<", "<=", ">", ">=" ,"==", "!="))
+    notOp = pp.Keyword("not")
+    andOp = pp.Keyword("and")
+    orOp = pp.Keyword("or")
+    #boolOp = pp.oneOf(("and" , "or"))
+
+    #https://stackoverflow.com/questions/63225718/pyparsing-precedence-breaks-with-unary-operator
+    expr = pp.infixNotation(
+    operand,
+    [        
+        (signop, 1, pp.opAssoc.RIGHT,EvaluatSignOp),
+        (multop, 2, pp.opAssoc.LEFT,EvaluateMulOp),
+        (plusop, 2, pp.opAssoc.LEFT,EvaluatePlusOp),
+        (comparisonOp,2,pp.opAssoc.LEFT,EvaluateComparison),    
+        (notOp,1,pp.opAssoc.RIGHT,EvaluateNot),    
+        (andOp,2,pp.opAssoc.LEFT,EvaluateOrAnd),
+        (orOp,2,pp.opAssoc.LEFT,EvaluateOrAnd),
+        (("?", ":"), 3, pp.opAssoc.RIGHT,EvaluateTernary)
+    ],)
+
+    return expr
+
+class ExpressionParser(object):
+
+    #the parser need to be created only once
+    parser = create_parser()
+    parser_lock = threading.RLock() #the parser can be access from many app at the same time
+
+    def __init__(self, expression_string : str, expression_context : BaseExpressionContext):     
+        self.context = expression_context
+        self.expression_string = expression_string #let's keep it for debuging
+        with ExpressionParser.parser_lock:
+            try: self.parsed_data = ExpressionParser.parser.parseString(expression_string,parse_all=True)[0]
+            except pp.ParseException as e: raise ParsingException(message = str(e),char_pos=e.column,expression_string=expression_string)
+        # except KeyError as e: 
+        #     import traceback
+        #     message = str(e)
+        #     for line in traceback.format_stack()[:-1]:
+        #         message += line.strip()
+        #     raise ParsingException(message = message,char_pos=-1,expression_string=expression_string)
+
+        self.parsed_data.set_context(self.context)
+
+    def __str__(self):
+        return str(self.parsed_data)
+
+    def evaluate(self):
+        self.context.reset()
+        result = self.parsed_data.eval()
+        return result
+
+class ConditionsParser(ExpressionParser):
+
+    def evaluate(self):
+        self.context.reset()
+        result = self.parsed_data.eval_bool()
+        return result
diff --git a/kwargsparser.py b/kwargsparser.py
new file mode 100644
index 0000000..461d094
--- /dev/null
+++ b/kwargsparser.py
@@ -0,0 +1,60 @@
+# Usage:
+#
+# you can optionnaly pass two callback log(string) to log error and warning. 
+# If you don't, error will assert and warning will be ignored
+# parser = kwargsParser(kwargs) 
+#
+# some_arg = parser.parse_args('some_arg',None)
+# some_other_arg = parser.parse_args('some_other_arg',False)
+#
+# parser.validate_args() #optional, will assert if kwargs contain unknow args and will display a list of valid args
+#
+
+class kwargsParser():
+    def __init__(self,kwargs,log_error_cb = None, log_warning_cb = None):
+        self.kwargs = dict(kwargs)
+        self.valid_args = list()
+        self.log_error_cb = log_error_cb
+        self.log_warning_cb = log_warning_cb
+
+    def parse_args(self,arg_name,default_value,legacy_args_name = []):
+        self.valid_args.append(arg_name)
+        arg_found = None
+        if arg_name in self.kwargs:
+            arg_found = arg_name
+        else: #let's check legacy args
+            for legacy_arg in legacy_args_name:
+                if legacy_arg in self.kwargs:
+                    arg_found = legacy_arg
+                    self.log_warning(f"{arg_found} is a legacy arg please use {arg_name} instead")
+                    break
+
+        if arg_found:
+            for legacy_arg in legacy_args_name:
+                if arg_found != legacy_arg and legacy_arg in self.kwargs:
+                    self.log_warning(f"{legacy_arg} is a legacy arg and will ignored as you used {arg_name} before")
+
+            value = self.kwargs[arg_found]
+            del self.kwargs[arg_found]
+            return value
+        else:
+            return default_value
+
+    def log_error(self, error_string):
+        if self.log_error_cb:
+            self.log_error_cb(error_string)
+        else:
+            assert False, error_string
+
+    def log_warning(self, warning_string):
+        if self.log_warning_cb:
+            self.log_warning_cb(warning_string)
+
+    def validate_args(self,args_to_ignore_in_validation = []):
+        for arg in args_to_ignore_in_validation:
+            if arg in self.kwargs:
+                del self.kwargs[arg]
+
+        args_left = len(self.kwargs)
+        if args_left != 0:
+            self.log_error(f"Unknown kwargs : {self.kwargs}. Valid args are {self.valid_args}")
\ No newline at end of file
diff --git a/logger_interface.py b/logger_interface.py
new file mode 100644
index 0000000..5799302
--- /dev/null
+++ b/logger_interface.py
@@ -0,0 +1,44 @@
+import traceback
+
+class LoggerInterface:
+
+    def __init__(self):
+        self.initialized = False
+
+    def __init__(self,ad_api, default_log = "main_log",mute = False):
+        self.initialize_logger_interface(ad_api,default_log,mute)
+
+    def initialize_logger_interface(self,ad_api, default_log = "main_log",mute = False):
+        self.ad_api = ad_api
+        self.default_log = default_log
+        self.mute = False
+        self.initialized = True
+
+    def mute_logger(self,mute : bool):
+        if mute:
+            self.ad_api.log("Muting logger",level = "INFO", log = self.default_log)
+        self.mute = bool(mute)
+
+    def log_info(self,message):
+        assert self.initialized
+        if not self.mute:
+            self.ad_api.log(message,level = "INFO", log = self.default_log)
+
+    def log_warning(self,message):
+        assert self.initialized
+        self.ad_api.log(message,level = "WARNING", log = self.default_log)
+
+    def log_error(self,message,stop_app = False,dump_stack = False):
+        assert self.initialized
+
+        if dump_stack:
+            stack = "\n"
+            for line in traceback.format_stack()[:-1]:
+                stack += line.strip() + '\n'
+        else: stack = ""
+
+        self.ad_api.log(message,level = "ERROR", log = self.default_log)
+        self.ad_api.log(message + stack,level = "ERROR", log = "error_log")
+        
+        if stop_app:
+            self.stop_app(self.name)
\ No newline at end of file
diff --git a/smartcondition.py b/smartcondition.py
new file mode 100644
index 0000000..9d5c1ea
--- /dev/null
+++ b/smartcondition.py
@@ -0,0 +1,614 @@
+#import appdaemon.plugins.hass.hassapi as hass
+import enum
+from datetime import datetime
+#from pickle import FALSE
+
+from adexpressioncontext import ADExpressionContext
+from expressionparser import ConditionsParser,ParsingException,EvaluationException
+from kwargsparser import kwargsParser
+
+def catch_smartcondition_exception(error_lambda):
+    def decorator(function):
+        def wrapper(*args, **kwargs):
+            try: return function(*args, **kwargs)
+            except ParsingException as e: error_lambda(args[0],str(e))
+        return wrapper
+    return decorator
+
+class Result(enum.Enum): 
+    Failed      = 0
+    Succeeded   = 1    
+    Disabled    = 2
+    Unavailable = 3
+
+class Evaluator():
+    __TEMPLATE_CONDITIONS_STRING        = "template_conditions"
+    __TRIGGER_CONDITIONS_STRING         = "trigger_conditions"
+    __BLOCKING_CONDITIONS_STRING        = "blocking_conditions"
+    __DISABLE_CONDITIONS_STRING         = "disable_conditions"
+    __CALLBACK_DELAY_STRING             = "callback_delay"
+    __LOG_NO_VALID_CONDITION_DETAILS    = "log_no_valid_condition_details"
+    __LOG_INIT                          = "log_init"
+    __EXTRA_ENTITIES_TO_LISTEN          = "extra_entities_to_listen"
+    __CONSTANTS                         = "constants"
+    __UNAVAIBILITY_RESULT               = "unavaibility_result"
+    
+    def __init__(self, appdaemon_api, conditions_block,**kwargs):
+        self.__trigger_conditions        = []
+        self.__blocking_conditions       = []
+        self.__disable_conditions        = []
+        self.__entities_to_listen        = {}
+        self.__debug_log_prefixes        = []
+        self.__callback_delay            = 0.0
+        self.__last_evaluation_result = None
+        self.__state_callbacks_handle = list()
+        self.__condition_state_change_delayed = list()
+        self.__condition_state_change_delayed_cb_handle = None
+
+        self.__appdaemon_api = appdaemon_api
+        self.__activated = False
+        self.__callback_trigger_reason_log_string = None
+        self.__evaluation_result_log_string = None
+
+        parser = kwargsParser(kwargs,lambda string: self.__log(string,level = "ERROR"),lambda string: self.__log(string,level = "WARNING"))
+        self.__logger_interface = parser.parse_args('logger_interface',None)
+        
+        self.__no_log_prefix = parser.parse_args('no_log_prefix',False) #as no_log_prefix is used to feedback parser error, it need to be defined first
+        condition_name = parser.parse_args('condition_name',None,['log_prefix'])
+        if condition_name:
+            if isinstance(condition_name,list):
+                for name in condition_name:
+                    self.__debug_log_prefixes.append(f"[{name}]")
+            else:
+                self.__debug_log_prefixes.append(f"[{condition_name}]")
+
+        extra_entities_to_listen = parser.parse_args(self.__EXTRA_ENTITIES_TO_LISTEN,None)
+        if extra_entities_to_listen:
+            if isinstance(extra_entities_to_listen, str): extra_entities_to_listen = [ extra_entities_to_listen ]
+            self.__add_to_entities_to_listen(extra_entities_to_listen)
+
+        self.__on_update_callback = parser.parse_args('on_update_cb',None,['callback'])
+        self.__on_change_callback = parser.parse_args('on_change_cb',None)
+        self.__unavaibility_result = parser.parse_args(self.__UNAVAIBILITY_RESULT,None) #None means throw an exception
+        self.__on_succeed_callback = parser.parse_args('on_succeed_cb',None)
+        self.__on_fail_callback = parser.parse_args('on_fail_cb',None)
+        self.__pass_condition_name_to_cb = parser.parse_args('pass_condition_name_to_cb',None)
+        self.__templates_library = parser.parse_args('templates_library',None)
+        #try: default_args = appdaemon_api.args
+        #except AttributeError: default_args = None
+        #args = parser.parse_args('args',default_args)
+        self.__log_init = parser.parse_args(self.__LOG_INIT,False)
+        self.__trigger_callback_on_activation = parser.parse_args('trigger_callback_on_activation',True)
+        self.__trigger_callback_on_entity_creation = parser.parse_args('trigger_callback_on_entity_creation',True)
+        self.__log_no_valid_condition_details = parser.parse_args(self.__LOG_NO_VALID_CONDITION_DETAILS,False)
+        self.__log_callback_trigger_reason = parser.parse_args('log_callback_trigger_reason',True)        
+        self.__sensors_aliases_default_value = parser.parse_args('sensors_aliases_default_value',dict())
+        activated = parser.parse_args('activated',True)
+        sensor_existence_validation = parser.parse_args('sensor_existence_validation',True)
+
+        self.expression_context = ADExpressionContext(self.__appdaemon_api,sensor_existence_validation)
+        constants = parser.parse_args('constants',dict())
+        for constant_name,value in constants.items():
+            self.expression_context.declare_constant(constant_name,value)
+        for alias,value in self.__sensors_aliases_default_value.items():
+            self.expression_context.declare_sensor_alias_default_value(alias,value)
+
+        parser.validate_args()
+
+        self.__parse_conditions_block(conditions_block)
+
+        if activated: self.activate()
+
+    def __has_user_callback(self):
+        return self.__on_update_callback or self.__on_change_callback or self.__on_succeed_callback or self.__on_fail_callback
+
+    def __has_user_callback_based_on_result(self):
+        return self.__on_change_callback or self.__on_succeed_callback or self.__on_fail_callback
+
+    def activate(self): 
+        if not self.__activated:
+            self.__activated = True
+            if self.__has_user_callback():
+                self.__register_internal_callback()
+                if self.__has_user_callback_based_on_result() and self.__trigger_callback_on_activation:
+                    self.__trigger_callbacks("Callback trigger by condition activation",True)
+
+    def deactivate(self): 
+        if self.__activated:
+            self.__activated = False
+            self.__last_evaluation_result = None
+            self.__unregister_internal_callback()
+
+    def __evaluate(self):
+        try:
+            self.__debug_log_prefixes.append("[Evaluating]")
+            result, disable_reason = self.__evaluate_conditions_list(self.__disable_conditions)
+            if result:    
+                self.__evaluation_result_log_string = self.__log_to_string(f"Disabled by {disable_reason}")     
+                self.__debug_log_prefixes.pop()
+                return Result.Disabled
+            else:
+                result, trigger_reason = self.__evaluate_conditions_list(self.__trigger_conditions)
+                if result:                
+                    logstring = f"Triggered by {trigger_reason}"
+                    result,blocking_reason = self.__evaluate_conditions_list(self.__blocking_conditions)
+                    if result: 
+                        logstring = f"Blocked by {blocking_reason}({logstring})"
+                        self.__evaluation_result_log_string = self.__log_to_string(logstring)
+                        self.__debug_log_prefixes.pop()
+                        return Result.Failed
+                    else:
+                        self.__evaluation_result_log_string = self.__log_to_string(logstring)
+                        self.__debug_log_prefixes.pop()
+                        return Result.Succeeded
+            if self.__log_no_valid_condition_details:
+                self.__evaluation_result_log_string = self.__log_to_string(f"No valid conditions\n{trigger_reason}")
+            else:
+                self.__evaluation_result_log_string = self.__log_to_string(f"No valid conditions")
+            self.__debug_log_prefixes.pop()
+            return Result.Failed
+        except EvaluationException as e:
+            if self.__unavaibility_result != None and "unavailable" in e.operands:
+                self.__log_to_string(f"The expression will be evaluated as '{self.__unavaibility_result}' because of the following exception {e}")
+                self.__debug_log_prefixes.pop()
+                return self.__unavaibility_result
+            else: 
+                self.__debug_log_prefixes.pop()
+                raise e
+        except Exception as e:
+            self.__debug_log_prefixes.pop()
+            raise e
+
+
+    def evaluate(self,log = True):
+        try: result = self.__evaluate()
+        except EvaluationException as e: 
+            self.__log(f"{e}",level = "ERROR")
+            return None
+        if log:
+            self.log_evaluation_result()
+        return result
+
+    def log_callback_trigger_reason(self):
+        if self.__callback_trigger_reason_log_string:
+            self.__log_info(self.__callback_trigger_reason_log_string)
+            self.__callback_trigger_reason_log_string = None
+
+    def log_evaluation_result(self):
+        if self.__evaluation_result_log_string:
+            self.__log_info(self.__evaluation_result_log_string)
+            self.__evaluation_result_log_string = None
+
+    def get_evaluation_result_log_string(self):
+        return self.__evaluation_result_log_string
+
+    def log_entities_states(self):
+        log_string = "Entities states: "
+        for entity,attributes in self.__entities_to_listen.items():
+            for attribute in attributes:
+                if attribute == "state" or attribute == None:
+                    log_string += f"{entity} = {self.__appdaemon_api.get_state(entity)},"
+                    #not sure why it was here, most likely a left over
+                    #handle = self.__appdaemon_api.listen_state(self.__on_condition_state_change,entity)
+                else:
+                    log_string += f"{entity}[{attribute}] = {self.__appdaemon_api.get_state(entity,attribute = attribute)},"
+
+        self.__log_info(log_string[:-1])
+
+    def get_entities_to_listen(self):
+        return self.__entities_to_listen
+
+    def get_entities_to_listen_as_list(self):
+        entities_list = list()
+        for entity_id,attributes in self.__entities_to_listen.items():
+            for attribute in attributes:
+                if attribute == None:
+                    entities_list.append(entity_id)
+                else:
+                    entities_list.append(f"{entity_id}.{attribute}")
+        return entities_list
+
+    def __add_to_entities_to_listen(self,extra_entities_to_listen):
+        #__add_to_entities_to_listen support both :
+        # ['sensor.a.attribute', 'sensor.a','sensor.a.another_attribute'] and
+        # { 'sensor.a' : ['attribute','another_attribute'] }
+        # single entity to listen in the form of a string 'sensor.a' are converted to a one element list
+        if isinstance(extra_entities_to_listen,str):
+            extra_entities_to_listen = [ extra_entities_to_listen ]
+
+        if isinstance(extra_entities_to_listen, list):
+            for entity_string in extra_entities_to_listen:
+                splitted_entity = entity_string.split('.')
+                
+                if len(splitted_entity) == 2:
+                    entity_id = entity_string
+                    attribute = None
+                elif len(splitted_entity) == 3:
+                    entity_id = f"{splitted_entity[0]}.{splitted_entity[1]}"
+                    attribute = splitted_entity[2]
+                else:
+                    self.__log(f"Invalid entity string '{entity_string}' present in extra_entities_to_listen",level = "ERROR")
+                    continue
+                
+                if not entity_id in self.__entities_to_listen:
+                    self.__entities_to_listen[entity_id] = []
+                if not attribute in self.__entities_to_listen[entity_id]: 
+                    self.__entities_to_listen[entity_id].append(attribute)
+
+        elif isinstance(extra_entities_to_listen, dict):
+            for entity in extra_entities_to_listen:
+                if not entity in self.__entities_to_listen:
+                    self.__entities_to_listen[entity] = []
+                
+                #I support both "my.entity" : "attribute" and "my.entity": ["attribute1","attribute2"]
+                if isinstance(extra_entities_to_listen[entity], str):
+                    attribute = extra_entities_to_listen[entity]
+                    if not attribute in self.__entities_to_listen[entity]: self.__entities_to_listen[entity].append(attribute)
+                else:
+                    for attribute in extra_entities_to_listen[entity]:
+                        if not attribute in self.__entities_to_listen[entity]: self.__entities_to_listen[entity].append(attribute)
+        else:
+            self.__log(f"extra_entities_to_listen is in an invalid format: {extra_entities_to_listen}",level = "ERROR")
+
+    def __evaluate_conditions_list(self,condition_list):       
+        for condition in condition_list:            
+            if condition.evaluate():
+                return True, str(condition)
+
+        full_condition = ""
+        for condition in condition_list:
+            full_condition += f"- {condition}\n"
+
+        return False, full_condition[:-1]
+
+    def __load_template(self, conditions_block, template_library):
+
+        def add_conditions_to_conditions_block(conditions_block,conditions_type,extra_conditions):
+            def log_template_loading(condition_string):
+                if self.__log_init:
+                    self.__log(f"Loading {conditions_type} : '{condition_string}'")
+
+            if not conditions_type in conditions_block:
+                conditions_block[conditions_type] = list()
+            elif isinstance(conditions_block[conditions_type], str):
+                #convert inline condition to list as we are goint to add more of them
+                conditions_block[conditions_type] = [conditions_block[conditions_type]]
+            
+            if isinstance(extra_conditions, list):
+                for condition_string in extra_conditions:  
+                    log_template_loading(condition_string)
+                    conditions_block[conditions_type].append(condition_string)
+            else: #support inline conditions
+                log_template_loading(extra_conditions)
+                conditions_block[conditions_type].append(extra_conditions)
+
+        if isinstance(conditions_block, str):
+            if conditions_block[0] == '<' and conditions_block[-1] == '>':
+                conditions_block = { self.__TEMPLATE_CONDITIONS_STRING : conditions_block}
+
+        if isinstance(conditions_block, dict) and self.__TEMPLATE_CONDITIONS_STRING in conditions_block:
+            if template_library != None:
+                self.__debug_log_prefixes.append("[Loading Templates]")
+                template_string = conditions_block[self.__TEMPLATE_CONDITIONS_STRING]              
+                if template_string[0] == '<' and template_string[-1] == '>':
+                    splitted_template = template_string.split(",")
+                    for template in splitted_template:
+                        template = template.strip()
+                        if template[0] == '<' and template[-1] == '>':                            
+                            template = template[1:-1].strip()                            
+                            if template in template_library:
+                                if self.__log_init:
+                                    self.__log(f"Loading template {template}")
+                                if isinstance(template_library[template],dict):
+                                    param_parser = kwargsParser(template_library[template],lambda string: self.__log(string,level = "ERROR"),lambda string: self.__log(string,level = "WARNING"))
+                                    trigger_conditions_args = param_parser.parse_args(self.__TRIGGER_CONDITIONS_STRING,None)
+                                    if trigger_conditions_args:
+                                        add_conditions_to_conditions_block(conditions_block,self.__TRIGGER_CONDITIONS_STRING,trigger_conditions_args)
+
+                                    blocking_conditions_args = param_parser.parse_args(self.__BLOCKING_CONDITIONS_STRING, None)
+                                    if blocking_conditions_args:
+                                        add_conditions_to_conditions_block(conditions_block,self.__BLOCKING_CONDITIONS_STRING,blocking_conditions_args)
+
+                                    disable_conditions_args = param_parser.parse_args(self.__DISABLE_CONDITIONS_STRING, None)
+                                    if disable_conditions_args:
+                                        add_conditions_to_conditions_block(conditions_block,self.__DISABLE_CONDITIONS_STRING,disable_conditions_args)
+
+                                    if param_parser.parse_args(self.__TEMPLATE_CONDITIONS_STRING, None):
+                                        self.__log(f"Template '{template}' contain recursive template",level = "ERROR")                                                            
+                                    
+                                    param_parser.validate_args()
+                                else: #manage inline conditions
+                                    add_conditions_to_conditions_block(conditions_block,self.__TRIGGER_CONDITIONS_STRING,template_library[template])
+                            else:
+                                self.__log(f"Template '{template}' is not present in the template library",level = "ERROR")
+                        else:
+                            self.__log(f"Error loading templates '{template}', invalid template format",level = "ERROR")
+                            break
+                else:
+                    self.__log(f"Error loading templates '{template_string}', invalid template format",level = "ERROR")
+            else:
+                self.__log(f"Error no template library defined",level = "ERROR")
+            
+            #we don't need the template reference anymore in the dictionnary
+            del conditions_block['template_conditions']
+            self.__debug_log_prefixes.pop()        
+        
+        return conditions_block
+
+    def __parse_conditions_block(self,conditions_block):
+        logstring = ""
+        self.__debug_log_prefixes.append("[Parsing]")
+
+        args_to_ignore_in_validation = [self.__LOG_INIT]
+        try: self.__log_init = conditions_block[self.__LOG_INIT]
+        except (TypeError,KeyError): pass
+
+        conditions_block = self.__load_template(conditions_block, self.__templates_library)
+
+        if isinstance(conditions_block, dict):
+            param_parser = kwargsParser(conditions_block,lambda string: self.__log(string,level = "ERROR"),lambda string: self.__log(string,level = "WARNING"))
+            
+            self.__callback_delay = param_parser.parse_args(self.__CALLBACK_DELAY_STRING,self.__callback_delay)
+            if self.__log_init and self.__callback_delay > 0.0:
+                self.__log("Callback delay set to " + str(self.__callback_delay))
+
+            self.__log_no_valid_condition_details = param_parser.parse_args(self.__LOG_NO_VALID_CONDITION_DETAILS, self.__log_no_valid_condition_details)
+
+
+            unavaibility_result = param_parser.parse_args(self.__UNAVAIBILITY_RESULT, None)
+            if unavaibility_result != None:
+                if unavaibility_result == "Succeeded": self.__unavaibility_result = Result.Succeeded
+                elif unavaibility_result == "Failed": self.__unavaibility_result = Result.Failed
+                elif unavaibility_result == "Disabled": self.__unavaibility_result = Result.Disabled
+                elif unavaibility_result == "None": self.__unavaibility_result = None
+                else: self.__log_error(f'Invalid value for {self.__UNAVAIBILITY_RESULT} : {unavaibility_result}. Valid values are [Succeeded,Failed,Disabled,Unavailable,None]')
+            
+            extra_entities_to_listen = param_parser.parse_args(self.__EXTRA_ENTITIES_TO_LISTEN, None)
+            if extra_entities_to_listen:
+                if self.__log_init:
+                    self.__log(f"adding extra entities to listen : {extra_entities_to_listen}")
+                self.__add_to_entities_to_listen(extra_entities_to_listen)
+
+            constants = param_parser.parse_args(self.__CONSTANTS, None)
+            if constants:
+                if self.__log_init:
+                    self.__log(f"declaring constants :")
+                for constant_name,value in constants.items():
+                    if self.__log_init:
+                        self.__log(f"{constant_name} = {value}")
+                    self.expression_context.declare_constant(constant_name,value)
+        
+
+            trigger_conditions_args = param_parser.parse_args(self.__TRIGGER_CONDITIONS_STRING,None)
+            if trigger_conditions_args:
+                conditions_count = self.__parse_conditions_from_arg(trigger_conditions_args,self.__trigger_conditions)   
+                if logstring == "": logstring = "Found "
+                else:  logstring += ", "
+                logstring += str(conditions_count) + " trigger conditions"
+
+            blocking_conditions_args = param_parser.parse_args(self.__BLOCKING_CONDITIONS_STRING, None)
+            if blocking_conditions_args:
+                conditions_count = self.__parse_conditions_from_arg(blocking_conditions_args,self.__blocking_conditions)
+                if logstring == "": logstring = "Found "
+                else:  logstring += ", "
+                logstring += str(conditions_count) + " blocking conditions"
+
+            disable_conditions_args = param_parser.parse_args(self.__DISABLE_CONDITIONS_STRING, None)
+            if disable_conditions_args:
+                conditions_count = self.__parse_conditions_from_arg(disable_conditions_args,self.__disable_conditions)
+                if logstring == "": logstring = "Found "
+                else:  logstring += ", "
+                logstring += str(conditions_count) + " disable conditions"
+
+            param_parser.validate_args(args_to_ignore_in_validation)
+        else:
+            #inline conditon are considered as trigger conditions
+            conditions_count = self.__parse_conditions_from_arg(conditions_block,self.__trigger_conditions)
+            logstring = f"Found {conditions_count} trigger conditions"
+
+        if logstring == "": logstring = "No conditions found"
+
+
+        if self.__log_init:
+            self.__log(logstring)
+        self.__debug_log_prefixes.pop()        
+
+    def __parse_conditions_from_arg(self,conditions_arg, conditions_list):  
+        def parse_string(str):
+            condition_parser = ConditionsParser(str,self.expression_context)
+            #self.__log(f"{condition_parser}")
+            conditions_list.append(condition_parser)
+            self.__add_to_entities_to_listen(self.expression_context.get_entities_to_listen())
+
+        if isinstance(conditions_arg, list):
+            for condition_string in conditions_arg:  
+                parse_string(condition_string)
+        else: #support inline conditions
+            parse_string(str(conditions_arg))
+
+        return len(conditions_list)
+
+    def __register_internal_callback(self):
+        assert len(self.__state_callbacks_handle) == 0, f"self.__state_callbacks_handle is not empy, you are probably trying to call __register_internal_callback() twice"
+        logstring = ""
+        for entity,attributes in self.__entities_to_listen.items():
+            attributes_string = ""
+            for attribute in attributes:
+                if attribute == "state" or attribute == None: #this is not healthy to use 'state' here as at some point an attribute could actually be called "state"
+                    assert attribute != 'state', "please don't use 'state' as a keyword to design the actual state of the entity, but use None instead"
+                    handle = self.__appdaemon_api.listen_state(self.__on_condition_state_change,entity)
+                else:
+                    handle = self.__appdaemon_api.listen_state(self.__on_condition_state_change,entity, attribute = attribute)
+
+                self.__state_callbacks_handle.append(handle)
+                
+                if attributes_string == "" : attributes_string = f"({attribute if attribute else 'state'}"
+                else: attributes_string += f",{attribute if attribute else 'state'}"
+            
+            attributes_string += f")"
+
+            if attributes_string == "(state)": attributes_string = ""
+
+            if logstring == "": 
+                logstring = f"Registering CB for {entity}{attributes_string}"
+            else: logstring += f", {entity}{attributes_string}"
+        
+        if self.__log_init:
+            if logstring == "":
+                logstring = f"No CB has been registered"
+            self.__log(logstring)
+
+    def __unregister_internal_callback(self):
+        if len(self.__state_callbacks_handle) > 0:
+            self.__log(f"Unregistering {len(self.__state_callbacks_handle)} callbacks")
+            for handle in self.__state_callbacks_handle:
+                self.__appdaemon_api.cancel_listen_state(handle)
+            self.__state_callbacks_handle = list()
+
+    def force_last_evaluation_result(self,new_result):
+        assert new_result == Result.Succeeded or new_result == Result.Failed
+        if self.__last_evaluation_result != Result.Disabled:
+            #disabled smart_condition stay disabled
+            self.__last_evaluation_result = new_result
+
+    def __trigger_callbacks(self,trigger_reason,triggered_from_activation = False):
+        has_log_trigger_reason = False
+        has_evaluation_result = False
+
+        def log_trigger_reason_once(trigger_reason):
+            nonlocal has_log_trigger_reason
+            if not has_log_trigger_reason:
+                has_log_trigger_reason = True
+                self.__callback_trigger_reason_log_string = self.__log_to_string(trigger_reason)
+                if self.__log_callback_trigger_reason and (not triggered_from_activation or self.__log_init):
+                    self.log_callback_trigger_reason()
+
+        def log_evaluation_result_once():
+            nonlocal has_evaluation_result
+            if not has_evaluation_result:
+                has_evaluation_result = True
+                if self.__log_callback_trigger_reason and (not triggered_from_activation or self.__log_init): #in that particular case, the evaluation result is a trigger reason
+                    self.log_evaluation_result()
+
+        if self.__on_update_callback and not triggered_from_activation: 
+            log_trigger_reason_once(trigger_reason)
+            if self.__pass_condition_name_to_cb != None:
+                self.__on_update_callback(self.__pass_condition_name_to_cb)
+            else:
+                self.__on_update_callback()
+        if self.__has_user_callback_based_on_result():
+            try: result = self.__evaluate()
+            except EvaluationException as e: 
+                self.__log(f"{e}",level = "ERROR")
+                return
+
+            #if result != Result.Disabled and result != self.__last_evaluation_result:
+            if result == Result.Disabled:
+                log_trigger_reason_once(trigger_reason)
+                log_evaluation_result_once()
+            elif result != self.__last_evaluation_result:
+                if self.__on_change_callback:
+                    log_trigger_reason_once(trigger_reason)
+                    log_evaluation_result_once()
+                    if self.__pass_condition_name_to_cb != None:
+                        self.__on_change_callback(self.__pass_condition_name_to_cb,self.__last_evaluation_result,result)
+                    else:
+                        self.__on_change_callback(self.__last_evaluation_result,result)
+                if self.__on_succeed_callback and result == Result.Succeeded:
+                    log_trigger_reason_once(trigger_reason)
+                    log_evaluation_result_once()
+                    if self.__pass_condition_name_to_cb != None:
+                        self.__on_succeed_callback(self.__pass_condition_name_to_cb)
+                    else:
+                        self.__on_succeed_callback()
+                if self.__on_fail_callback  and result == Result.Failed: 
+                    log_trigger_reason_once(trigger_reason)
+                    log_evaluation_result_once()
+                    if self.__pass_condition_name_to_cb != None:
+                        self.__on_fail_callback(self.__pass_condition_name_to_cb)
+                    else:
+                        self.__on_fail_callback()
+            #I want Disabled => something to trigger CB
+            self.__last_evaluation_result = result
+
+    def __on_condition_state_change_delayed(self, kwargs):
+        self.__condition_state_change_delayed_cb_handle = None
+        if len(self.__condition_state_change_delayed) == 0:
+            self.__log(f"Callback has been trigger but self.__condition_state_change_delayed is empty, this shouldn't happen, the callback won't be called", level = "WARNING")
+
+        else:
+            logstring = "Callback trigger by"
+
+            for element in self.__condition_state_change_delayed:
+                logstring = logstring + f" {element[0]}({element[1]} => {element[2]} at {element[3].strftime('%Hh%M:%S')}),"
+
+            delay = (datetime.now() - self.__condition_state_change_delayed[0][3]).total_seconds()
+            logstring = f"{logstring[:-1]} after a delay of {round(delay,1)}s"
+            
+            # if self.__manual_logs:
+            #     self.__callback_trigger_reason_log_string = self.__log_to_string(logstring)
+            # else:
+            #     self.__log(logstring)
+
+            self.__condition_state_change_delayed.clear()
+            self.__trigger_callbacks(logstring)
+
+    def __on_condition_state_change(self, entity, attribute, old, new, kwargs):
+        if old != new and (old != None or self.__trigger_callback_on_entity_creation):
+            if self.__callback_delay == 0.0:
+                # log_string = f"Callback trigger by {entity}({old} => {new})"
+                # if self.__manual_logs:
+                #     self.__callback_trigger_reason_log_string = self.__log_to_string(log_string)
+                # else: self.__log(log_string)
+
+                # if self.__on_update_callback: self.__on_update_callback()
+                # if self.__has_user_callback_based_on_result():
+                #     self.__update_result()
+                self.__trigger_callbacks(f"Callback trigger by {entity}({old} => {new})")
+            else:
+                if self.__condition_state_change_delayed_cb_handle != None and self.__appdaemon_api.timer_running(self.__condition_state_change_delayed_cb_handle): 
+                    self.__appdaemon_api.cancel_timer(self.__condition_state_change_delayed_cb_handle)
+                    self.__condition_state_change_delayed_cb_handle = None
+                    
+                self.__condition_state_change_delayed.append((entity,old,new,datetime.now()))    
+                #self.__log("State changed :" + str(entity) + "(" + str(old) + " => " + str(new) + ") but callback delayed for " + str(self.__callback_delay) + "s")
+                self.__condition_state_change_delayed_cb_handle = self.__appdaemon_api.run_in(self.__on_condition_state_change_delayed, self.__callback_delay)
+
+    def __log(self,message,**kwargs):
+        log_string = self.__log_to_string(message)
+        
+        if 'level' in kwargs and kwargs['level'] == 'ERROR':
+            self.__log_error(log_string)
+        elif 'level' in kwargs and kwargs['level'] == 'WARNING':
+            self.__log_warning(log_string)
+        else:
+            self.__log_info(log_string)
+
+    def __log_info(self,message):
+        if self.__logger_interface:
+            self.__logger_interface.log_info(message)
+        else:
+            try: self.__appdaemon_api.log_info(message)
+            except AttributeError: self.__appdaemon_api.log(message,level = "INFO")
+
+    def __log_warning(self,message):
+        if self.__logger_interface:
+            self.__logger_interface.log_warning(message)
+        else:
+            try: self.__appdaemon_api.log_warning(message)
+            except AttributeError: self.__appdaemon_api.log(message,level = "WARNING")
+
+    def __log_error(self,message):
+        if self.__logger_interface:
+            self.__logger_interface.log_error(message)
+        else:
+            try: self.__appdaemon_api.log_error(message)
+            except AttributeError: self.__appdaemon_api.log(message,level = "ERROR")
+
+    def __log_to_string(self,message):
+        dest_string = ""
+        if self.__no_log_prefix == False:
+            for prefix in self.__debug_log_prefixes:
+                dest_string = dest_string + prefix
+        if dest_string: dest_string += " "
+        return dest_string + message
diff --git a/smartvalue.py b/smartvalue.py
new file mode 100644
index 0000000..2e25682
--- /dev/null
+++ b/smartvalue.py
@@ -0,0 +1,305 @@
+#import appdaemon.plugins.hass.hassapi as hass
+from datetime import datetime
+from adexpressioncontext import ADExpressionContext
+from expressionparser import ExpressionParser,ParsingException,EvaluationException
+from kwargsparser import kwargsParser
+
+def catch_smartvalue_exception(error_lambda):
+    def decorator(function):
+        def wrapper(*args, **kwargs):
+            try: return function(*args, **kwargs)
+            except ParsingException as e: error_lambda(args[0],str(e))
+        return wrapper
+    return decorator
+
+class Evaluator():
+
+    def __init__(self, appdaemon_api, expression,**kwargs):
+        self.__expression_parser    = []
+        self.__entities_to_listen   = {}
+        self.__debug_log_prefixes   = []
+        self.__last_evaluation_result = None
+        self.__state_callbacks_handle = list()
+
+        self.__appdaemon_api = appdaemon_api        
+        self.__activated = False
+        self.__callback_trigger_reason_log_string = None
+        self.__evaluation_result_log_string = None
+
+        parser = kwargsParser(kwargs,lambda string: self.__log(string,level = "ERROR"),lambda string: self.__log(string,level = "WARNING"))
+        self.__logger_interface = parser.parse_args('logger_interface',None)
+        
+        self.__no_log_prefix = parser.parse_args('no_log_prefix',False) #as no_log_prefix is used to feedback parser error, it need to be defined first
+        expression_name = parser.parse_args('expression_name',None)
+        if expression_name:
+            self.__debug_log_prefixes.append(f"[{expression_name}]")
+
+        self.__on_update_callback = parser.parse_args('on_update_cb',None,['callback'])
+        self.__on_change_callback = parser.parse_args('on_change_cb',None)
+        self.__pass_expression_name_to_cb = parser.parse_args('pass_expression_name_to_cb',None)
+        self.__log_init = parser.parse_args('log_init',True)
+        self.__unavaibility_value = parser.parse_args('unavaibility_value','unavailable') #None means throw an exception
+        self.__trigger_callback_on_activation = parser.parse_args('trigger_callback_on_activation',True)
+        self.__trigger_callback_on_entity_creation = parser.parse_args('trigger_callback_on_entity_creation',True)
+        self.__log_callback_trigger_reason = parser.parse_args('log_callback_trigger_reason',True)
+        self.__constants = parser.parse_args('constants',dict())
+        self.__sensors_aliases_default_value = parser.parse_args('sensors_aliases_default_value',dict())
+        activated = parser.parse_args('activated',True)
+        sensor_existence_validation = parser.parse_args('sensor_existence_validation',True)
+
+        self.expression_context = ADExpressionContext(self.__appdaemon_api,sensor_existence_validation)
+        for constant_name,value in self.__constants.items():
+            self.expression_context.declare_constant(constant_name,value)
+        for alias,value in self.__sensors_aliases_default_value.items():
+            self.expression_context.declare_sensor_alias_default_value(alias,value)
+
+        parser.validate_args()
+
+        self.__debug_log_prefixes.append("[Parsing]")
+        self.__expression_parser = ExpressionParser(str(expression),self.expression_context)
+        self.__add_to_entities_to_listen(self.expression_context.get_entities_to_listen())
+        self.__debug_log_prefixes.pop()
+
+        if activated: self.activate()
+
+    def __has_user_callback(self):
+        return self.__on_update_callback or self.__on_change_callback
+
+    def __has_user_callback_based_on_result(self):
+        return self.__on_change_callback
+
+    def activate(self): 
+        if not self.__activated:
+            self.__activated = True
+            if self.__has_user_callback():
+                self.__register_internal_callback()
+                if self.__has_user_callback_based_on_result() and self.__trigger_callback_on_activation:
+                    self.__trigger_callbacks("Callback trigger by condition activation",True)
+
+    def deactivate(self): 
+        if self.__activated:
+            self.__activated = False
+            self.__last_evaluation_result = None
+            self.__unregister_internal_callback()
+
+    def __evaluate(self):
+        self.__debug_log_prefixes.append("[Evaluating]")
+        try: result = self.__expression_parser.evaluate()
+        except EvaluationException as e:
+            if self.__unavaibility_value != None and "unavailable" in e.operands:
+                self.__log_to_string(f"The expression will be evaluated as '{self.__unavaibility_value}' because of the following exception {e}")
+                self.__debug_log_prefixes.pop()
+                return self.__unavaibility_value
+            else: 
+                self.__debug_log_prefixes.pop()
+                raise e
+        self.__debug_log_prefixes.pop()
+        return result
+
+    def evaluate(self,log = True):
+        try: result = self.__evaluate()
+        except EvaluationException as e: 
+            self.__log(f"{e}",level = "ERROR")
+            return None
+        if log:
+            self.log_evaluation_result()
+        return result
+
+    def log_callback_trigger_reason(self):
+        if self.__callback_trigger_reason_log_string:
+            self.__log_info(self.__callback_trigger_reason_log_string)
+            self.__callback_trigger_reason_log_string = None
+
+    def log_evaluation_result(self):
+        if self.__evaluation_result_log_string:
+            self.__log_info(self.__evaluation_result_log_string)
+            self.__evaluation_result_log_string = None
+
+    def get_evaluation_result_log_string(self):
+        return self.__evaluation_result_log_string
+
+    def log_entities_states(self):
+        log_string = "Entities states: "
+        for entity,attributes in self.__entities_to_listen.items():
+            for attribute in attributes:
+                if attribute == "state" or attribute == None:
+                    log_string += f"{entity} = {self.__appdaemon_api.get_state(entity)},"
+                    #not sure why it was here, most likely a left over
+                    #handle = self.__appdaemon_api.listen_state(self.__on_condition_state_change,entity)
+                else:
+                    log_string += f"{entity}[{attribute}] = {self.__appdaemon_api.get_state(entity,attribute = attribute)},"
+
+        self.__log_info(log_string[:-1])
+
+    def get_entities_to_listen(self):
+        return self.__entities_to_listen
+
+    def get_entities_to_listen_as_list(self):
+        entities_list = list()
+        for entity_id,attributes in self.__entities_to_listen.items():
+            for attribute in attributes:
+                if attribute == None:
+                    entities_list.append(entity_id)
+                else:
+                    entities_list.append(f"{entity_id}.{attribute}")
+        return entities_list
+
+    def __add_to_entities_to_listen(self,extra_entities_to_listen):
+        #__add_to_entities_to_listen support both :
+        # ['sensor.a.attribute', 'sensor.a','sensor.a.another_attribute'] and
+        # { 'sensor.a' : ['attribute','another_attribute'] }
+        if isinstance(extra_entities_to_listen, list):
+            for entity_string in extra_entities_to_listen:
+                splitted_entity = entity_string.split('.')
+                
+                if len(splitted_entity) == 2:
+                    entity_id = entity_string
+                    attribute = None
+                elif len(splitted_entity) == 3:
+                    entity_id = f"{splitted_entity[0]}.{splitted_entity[1]}"
+                    attribute = splitted_entity[2]
+                else:
+                    self.__log(f"Invalid entity string '{entity_string}' present in extra_entities_to_listen",level = "ERROR")
+                    continue
+                
+                if not entity_id in self.__entities_to_listen:
+                    self.__entities_to_listen[entity_id] = []
+                if not attribute in self.__entities_to_listen[entity_id]: 
+                    self.__entities_to_listen[entity_id].append(attribute)
+
+        elif isinstance(extra_entities_to_listen, dict):
+            for entity in extra_entities_to_listen:
+                if not entity in self.__entities_to_listen:
+                    self.__entities_to_listen[entity] = []
+                
+                #I support both "my.entity" : "attribute" and "my.entity": ["attribute1","attribute2"]
+                if isinstance(extra_entities_to_listen[entity], str):
+                    attribute = extra_entities_to_listen[entity]
+                    if not attribute in self.__entities_to_listen[entity]: self.__entities_to_listen[entity].append(attribute)
+                else:
+                    for attribute in extra_entities_to_listen[entity]:
+                        if not attribute in self.__entities_to_listen[entity]: self.__entities_to_listen[entity].append(attribute)
+        else:
+            self.__log(f"extra_entities_to_listen is in an invalid format: {extra_entities_to_listen}",level = "ERROR")
+
+    def __register_internal_callback(self):
+        assert len(self.__state_callbacks_handle) == 0, f"self.__state_callbacks_handle is not empy, you are probably trying to call __register_internal_callback() twice"
+        logstring = ""
+        for entity,attributes in self.__entities_to_listen.items():
+            attributes_string = ""
+            for attribute in attributes:
+                if attribute == "state" or attribute == None: #this is not healthy to use 'state' here as at some point an attribute could actually be called "state"
+                    assert attribute != 'state', "please don't use 'state' as a keyword to design the actual state of the entity, but use None instead"
+                    handle = self.__appdaemon_api.listen_state(self.__on_condition_state_change,entity)
+                else:
+                    handle = self.__appdaemon_api.listen_state(self.__on_condition_state_change,entity, attribute = attribute)
+
+                self.__state_callbacks_handle.append(handle)
+                
+                if attributes_string == "" : attributes_string = f"({attribute if attribute else 'state'}"
+                else: attributes_string += f",{attribute if attribute else 'state'}"
+            
+            attributes_string += f")"
+
+            if attributes_string == "(state)": attributes_string = ""
+
+            if logstring == "": 
+                logstring = f"Registering CB for {entity}{attributes_string}"
+            else: logstring += f", {entity}{attributes_string}"
+        
+        if self.__log_init:
+            if logstring == "": 
+                logstring = f"No CB has been registered"
+            self.__log(logstring)
+
+    def __unregister_internal_callback(self):
+        if len(self.__state_callbacks_handle) > 0:
+            self.__log(f"Unregistering {len(self.__state_callbacks_handle)} callbacks")
+            for handle in self.__state_callbacks_handle:
+                self.__appdaemon_api.cancel_listen_state(handle)
+            self.__state_callbacks_handle = list()
+
+    def __trigger_callbacks(self,trigger_reason,triggered_from_activation = False):
+        has_log_trigger_reason = False
+        has_evaluation_result = False
+
+        def log_trigger_reason_once(trigger_reason):
+            nonlocal has_log_trigger_reason
+            if not has_log_trigger_reason:
+                has_log_trigger_reason = True
+                self.__callback_trigger_reason_log_string = self.__log_to_string(trigger_reason)
+                if self.__log_callback_trigger_reason:
+                    self.log_callback_trigger_reason()
+
+        def log_evaluation_result_once():
+            nonlocal has_evaluation_result
+            if not has_evaluation_result:
+                has_evaluation_result = True
+                if self.__log_callback_trigger_reason: #in that particular case, the evaluation result is a trigger reason
+                    self.log_evaluation_result()
+
+        if self.__on_update_callback and not triggered_from_activation: 
+            log_trigger_reason_once(trigger_reason)
+            if self.__pass_expression_name_to_cb != None:
+                self.__on_update_callback(self.__pass_expression_name_to_cb)
+            else:
+                self.__on_update_callback()
+        if self.__has_user_callback_based_on_result():
+            try: result = self.__evaluate()
+            except EvaluationException as e: 
+                self.__log(f"{e}",level = "ERROR")
+                return
+
+            if result != self.__last_evaluation_result:
+                if self.__on_change_callback:
+                    log_trigger_reason_once(trigger_reason)
+                    log_evaluation_result_once()
+                    if self.__pass_expression_name_to_cb != None:
+                        self.__on_change_callback(self.__pass_expression_name_to_cb,self.__last_evaluation_result,result)
+                    else:
+                        self.__on_change_callback(self.__last_evaluation_result,result)
+
+            self.__last_evaluation_result = result    
+
+    def __on_condition_state_change(self, entity, attribute, old, new, kwargs):
+        if old != new and (old != None or self.__trigger_callback_on_entity_creation):
+            self.__trigger_callbacks(f"Callback trigger by {entity}({old} => {new})")
+
+    def __log(self,message,**kwargs):
+        log_string = self.__log_to_string(message)
+        
+        if 'level' in kwargs and kwargs['level'] == 'ERROR':
+            self.__log_error(log_string)
+        elif 'level' in kwargs and kwargs['level'] == 'WARNING':
+            self.__log_warning(log_string)
+        else:
+            self.__log_info(log_string)
+
+    def __log_info(self,message):
+        if self.__logger_interface:
+            self.__logger_interface.log_info(message)
+        else:
+            try: self.__appdaemon_api.log_info(message)
+            except AttributeError: self.__appdaemon_api.log(message,level = "INFO")
+
+    def __log_warning(self,message):
+        if self.__logger_interface:
+            self.__logger_interface.log_warning(message)
+        else:
+            try: self.__appdaemon_api.log_warning(message)
+            except AttributeError: self.__appdaemon_api.log(message,level = "WARNING")
+
+    def __log_error(self,message):
+        if self.__logger_interface:
+            self.__logger_interface.log_error(message)
+        else:
+            try: self.__appdaemon_api.log_error(message)
+            except AttributeError: self.__appdaemon_api.log(message,level = "ERROR")
+
+    def __log_to_string(self,message):
+        dest_string = ""
+        if self.__no_log_prefix == False:
+            for prefix in self.__debug_log_prefixes:
+                dest_string = dest_string + prefix
+        if dest_string: dest_string += " "
+        return dest_string + message
diff --git a/ssm.py b/ssm.py
new file mode 100644
index 0000000..990ad99
--- /dev/null
+++ b/ssm.py
@@ -0,0 +1,37 @@
+from kwargsparser import kwargsParser as kwargsParser
+
+class SimpleStateMachine():
+    def __init__(self,default_state,**kwargs):
+        parser = kwargsParser(kwargs)
+
+        self.log_cb = parser.parse_args("log_cb",None)
+
+        parser.validate_args()
+        self.current_state = None
+        self.change_state(default_state)
+
+    def log(self,log_string):
+        if self.log_cb: self.log_cb(log_string)
+
+    def change_state(self,new_state):
+        if new_state != self.current_state:
+            if self.current_state != None:
+                if self.current_state.on_exit != None:
+                    self.current_state.on_exit()
+                self.log(f"Changing from state {self.current_state.state_name} to {new_state.state_name}")
+            else:
+                self.log(f"Initialising with state {new_state.state_name}")
+            self.current_state = new_state
+            if self.current_state.on_enter != None: 
+                self.current_state.on_enter()
+
+class State():
+    def __init__(self,state_name,**kwargs):
+        self.state_name = state_name
+        
+        parser = kwargsParser(kwargs)
+
+        self.on_enter = parser.parse_args("on_enter_cb",None)
+        self.on_exit = parser.parse_args("on_exit_cb",None)
+
+        parser.validate_args()
\ No newline at end of file
diff --git a/unit_tests/test_attributes.yaml b/unit_tests/test_attributes.yaml
new file mode 100644
index 0000000..c994f61
--- /dev/null
+++ b/unit_tests/test_attributes.yaml
@@ -0,0 +1,56 @@
+fake_entities:
+  binary_sensor.true: True
+  binary_sensor.false: False
+  binary_sensor.off: 'off'
+  binary_sensor.on: 'on'
+  sensor.int17: 17
+  sensor.int170: 170
+  sensor.int200: 200
+  sensor.int3: 3
+  sensor.float10: 10.0
+  sensor.float5: 5.0
+  sensor.strNuit: 'Nuit'
+  sensor.strHome: 'home'
+  sensor.with_state_and_attribute: 'SomeRandomState'
+  sensor.with_state_and_attribute.off: 'off'
+  sensor.with_state_and_attribute.on: 'on'
+  sensor.with_state_and_attribute.f127: 127
+  sensor.with_only_attribute.on: 'on'
+  sensor.None: #None
+
+constants:
+  self: sensor.with_state_and_attribute
+  pi: 3.14
+
+tests:
+  test_1:
+    expected_result: Succeeded
+    conditions: sensor.with_state_and_attribute.on 
+
+  test_2:
+    expected_result: Succeeded
+    #TODO: find a way to make it work without parenthesis
+    #conditions: (sensor.with_state_and_attribute.on and binary_sensor.on) == not binary_sensor.false
+    conditions: (sensor.with_state_and_attribute.on and binary_sensor.on) == (not binary_sensor.false)
+
+  test_3:
+    expected_result: Succeeded
+    conditions: sensor.with_state_and_attribute.f127 < sensor.int170
+
+  test_4:
+    expected_result: ParsingException
+    conditions: sensor.with_only_attribute.on != binary_sensor.on
+
+  test_5:
+    expected_result: Succeeded
+    #TODO: find a way to make it work without parenthesis
+    #conditions: (self.on and binary_sensor.on) == not binary_sensor.false
+    conditions: (self.on and binary_sensor.on) == (not binary_sensor.false)
+
+  test_6:
+    expected_result: Succeeded
+    conditions: self.f127 < sensor.int170
+
+  test_7:
+    expected_result: ParsingException
+    conditions: pi.on != binary_sensor.on
\ No newline at end of file
diff --git a/unit_tests/test_bool.yaml b/unit_tests/test_bool.yaml
new file mode 100644
index 0000000..5550f4f
--- /dev/null
+++ b/unit_tests/test_bool.yaml
@@ -0,0 +1,58 @@
+fake_entities:
+  binary_sensor.true: True
+  binary_sensor.false: False
+  binary_sensor.off: 'off'
+  binary_sensor.on: 'on'
+  sensor.int17: 17
+  sensor.int170: 170
+  sensor.int200: 200
+  sensor.int3: 3
+  sensor.float10: 10.0
+  sensor.float5: 5.0
+  sensor.strNuit: 'Nuit'
+  sensor.strHome: 'home'
+  binary_sensor.nottrue: False
+
+constants:
+  andtrap: False
+
+tests:
+  test_1:
+    expected_result: Succeeded
+    conditions: binary_sensor.true or binary_sensor.false
+
+  test_2:
+    expected_result: Failed
+    conditions: binary_sensor.true and binary_sensor.false
+
+  test_3:
+    expected_result: Succeeded
+    conditions: binary_sensor.on or binary_sensor.off
+
+  test_4:
+    expected_result: Failed
+    conditions: binary_sensor.on and binary_sensor.off == False
+
+  test_5:
+    expected_result: Succeeded
+    conditions: binary_sensor.true or binary_sensor.false and binary_sensor.false
+
+  test_6:
+    expected_result: Failed
+    conditions: (binary_sensor.true or binary_sensor.false) and binary_sensor.false
+
+  test_7:
+    expected_result: Succeeded
+    conditions: not binary_sensor.off
+
+  test_8:
+    expected_result: Failed
+    conditions: not binary_sensor.on
+
+  test_9:
+    expected_result : Succeeded
+    conditions: binary_sensor.true == (not binary_sensor.false)
+
+  test_10:
+    conditions: binary_sensor.nottrue == andtrap
+    expected_result: Succeeded
\ No newline at end of file
diff --git a/unit_tests/test_comparaison.yaml b/unit_tests/test_comparaison.yaml
new file mode 100644
index 0000000..402279d
--- /dev/null
+++ b/unit_tests/test_comparaison.yaml
@@ -0,0 +1,37 @@
+fake_entities:
+  binary_sensor.true: True
+  binary_sensor.false: False
+  binary_sensor.off: 'off'
+  binary_sensor.on: 'on'
+  sensor.int17: 17
+  sensor.int170: 170
+  sensor.int200: 200
+  sensor.int3: 3
+  sensor.float10: 10.0
+  sensor.float5: 5.0
+  sensor.strNuit: 'Nuit'
+  sensor.strHome: 'home'
+
+tests:
+  test_1:
+    expected_result: Succeeded
+    conditions: sensor.int200 > 115 and (sensor.int200 < 190 or (binary_sensor.on and sensor.int200 < 220))
+  test_2:
+    expected_result: Failed
+    conditions: (sensor.int170 * 2) < sensor.int200
+  test_3:
+    expected_result: Failed
+    conditions: not not binary_sensor.off
+  test_4: 
+    expected_result: Succeeded
+    #TODO: find a way to make it work without parenthesis
+    #conditions: (binary_sensor.on and binary_sensor.on) == not binary_sensor.false
+    conditions: (binary_sensor.on and binary_sensor.on) == (not binary_sensor.false)
+  test_5: 
+    expected_result: Succeeded
+    conditions: (binary_sensor.on and binary_sensor.on) == True
+
+    
+
+
+    
diff --git a/unit_tests/test_constants.yaml b/unit_tests/test_constants.yaml
new file mode 100644
index 0000000..0382fbb
--- /dev/null
+++ b/unit_tests/test_constants.yaml
@@ -0,0 +1,53 @@
+fake_entities:
+  binary_sensor.true: True
+  binary_sensor.false: False
+  binary_sensor.off: 'off'
+  binary_sensor.on: 'on'
+  sensor.int17: 17
+  sensor.int170: 170
+  sensor.int200: 200
+  sensor.int3: 3
+  sensor.float10: 10.0
+  sensor.float5: 5.0
+  sensor.strNuit: 'Nuit'
+  sensor.strHome: 'home'
+  sensor.None: #None
+
+constants:
+  self: sensor.int170
+  selftrue: binary_sensor.true
+  pi: 3.14
+
+tests:
+  test_1:
+    expected_result: Succeeded
+    conditions: binary_sensor.true and True
+
+  test_2:
+    expected_result: Failed
+    conditions: binary_sensor.true and False
+
+  test_3:
+    expected_result: Succeeded
+    conditions: sensor.strNuit != None
+
+  test_4:
+    expected_result: Succeeded
+    conditions: sensor.None == None
+
+  test_5:
+    expected_result: Succeeded
+    conditions: self > 160
+
+  test_6:
+    expected_result: Failed
+    conditions: self < 160
+
+  test_7:
+    expected_result: Succeeded
+    conditions: pi * 2 == 6.28
+
+  test_8:
+    expected_result: Succeeded
+    conditions: selftrue and not sensor.strHome == 'Nuit'
+    
\ No newline at end of file
diff --git a/unit_tests/test_entity_to_listen.yaml b/unit_tests/test_entity_to_listen.yaml
new file mode 100644
index 0000000..b80b507
--- /dev/null
+++ b/unit_tests/test_entity_to_listen.yaml
@@ -0,0 +1,54 @@
+fake_entities:
+  binary_sensor.true: True
+  binary_sensor.false: False
+  binary_sensor.off: 'off'
+  binary_sensor.on: 'on'
+  sensor.int17: 17
+  sensor.int170: 170
+  sensor.int200: 200
+  sensor.int3: 3
+  sensor.float10: 10.0
+  sensor.float5: 5.0
+  sensor.strNuit: 'Nuit'
+  sensor.strHome: 'home'
+  sensor.None: #None
+  sensor.with_state_and_attribute: 'SomeRandomState'
+  sensor.with_state_and_attribute.off: 'off'
+  sensor.with_state_and_attribute.on: 'on'
+  sensor.with_state_and_attribute.f127: 127
+
+constants:
+  self: sensor.int170
+  pi: 3.14
+
+tests:
+  test_1:
+    expected_result: Succeeded
+    expected_entities_to_listen:
+      - binary_sensor.true
+    conditions: binary_sensor.true and True
+  test_2:
+    expected_result: Succeeded
+    expected_entities_to_listen:
+      - binary_sensor.true
+      - binary_sensor.false
+    conditions: (binary_sensor.true and binary_sensor.false) or binary_sensor.true
+  test_3:
+    expected_result: Succeeded
+    expected_entities_to_listen:
+      - sensor.int170
+      - sensor.float10
+    conditions: self > sensor.float10
+  test_4:
+    expected_result: Succeeded
+    expected_entities_to_listen:
+      - sensor.float5
+    conditions: pi < sensor.float5
+  test_5:
+    expected_result: Failed
+    expected_entities_to_listen:
+      - sensor.float5
+      - sensor.with_state_and_attribute
+      - sensor.with_state_and_attribute.on
+      - sensor.with_state_and_attribute.f127
+    conditions: (sensor.with_state_and_attribute.f127 > sensor.float5 or sensor.with_state_and_attribute.on) and sensor.with_state_and_attribute == 'randomstring'
diff --git a/unit_tests/test_parsing_errors.yaml b/unit_tests/test_parsing_errors.yaml
new file mode 100644
index 0000000..a3bc98c
--- /dev/null
+++ b/unit_tests/test_parsing_errors.yaml
@@ -0,0 +1,26 @@
+fake_entities:
+  binary_sensor.true: True
+  binary_sensor.false: False
+  binary_sensor.off: 'off'
+  binary_sensor.on: 'on'
+  sensor.int17: 17
+  sensor.int170: 170
+  sensor.int200: 200
+  sensor.int3: 3
+  sensor.float10: 10.0
+  sensor.float5: 5.0
+  sensor.strNuit: 'Nuit'
+  sensor.strHome: 'home'
+
+tests:
+  test_1:
+    expected_result: ParsingException
+    conditions: (binary_sensor.true or binary_sensor.false
+
+  test_2:
+    expected_result: ParsingException
+    conditions: (binary_sensor.true and) binary_sensor.false
+
+  test_3:
+    expected_result: ParsingException
+    conditions: binary_sensor.on or binary_sensore.off
\ No newline at end of file
diff --git a/unit_tests/test_smart_conditions.yaml b/unit_tests/test_smart_conditions.yaml
new file mode 100644
index 0000000..3760df8
--- /dev/null
+++ b/unit_tests/test_smart_conditions.yaml
@@ -0,0 +1,60 @@
+fake_entities:
+  binary_sensor.true: True
+  binary_sensor.false: False
+  binary_sensor.off: 'off'
+  binary_sensor.on: 'on'
+  sensor.int17: 17
+  sensor.int170: 170
+  sensor.int200: 200
+  sensor.int3: 3
+  sensor.float10: 10.0
+  sensor.float5: 5.0
+  sensor.strNuit: 'Nuit'
+  sensor.strHome: 'home'
+  sensor.strNuit.int80: 70
+
+constants:
+  self: binary_sensor.true
+
+tests:
+  test_1:
+    expected_result: Succeeded
+    conditions: 
+      trigger_conditions:
+        - sensor.int170 < 10 and sensor.int17 >= 28
+        - self and not sensor.strNuit == 'Nuit'
+        - sensor.int170 >= 34
+
+  test_2:
+    expected_result: Disabled
+    conditions: 
+      trigger_conditions:
+        - binary_sensor.false and sensor.int170 > 15
+        - not binary_sensor.off and sensor.int170 > 65
+      disable_conditions:
+        - sensor.strNuit.int80 < 80 and sensor.strNuit.int80 > 40
+        - sensor.strNuit == 'Nuit'
+  test_3:
+    expected_result: Failed
+    conditions: 
+      trigger_conditions:
+      - binary_sensor.off and binary_sensor.true
+      - binary_sensor.true
+      blocking_conditions: self and not binary_sensor.off
+      disable_conditions: binary_sensor.off
+  test_4: 
+    expected_result: Disabled
+    conditions: 
+      trigger_conditions:
+        - binary_sensor.true and (not binary_sensor.on or binary_sensor.off)
+        - binary_sensor.false and binary_sensor.on
+        - binary_sensor.on and not binary_sensor.true
+      blocking_conditions: not binary_sensor.off
+      disable_conditions:
+        - binary_sensor.off
+        - not binary_sensor.false and sensor.strNuit == 'Nuit'
+
+    
+
+
+    
diff --git a/unit_tests/test_strings.yaml b/unit_tests/test_strings.yaml
new file mode 100644
index 0000000..1dcfb9c
--- /dev/null
+++ b/unit_tests/test_strings.yaml
@@ -0,0 +1,38 @@
+fake_entities:
+  binary_sensor.true: True
+  binary_sensor.false: False
+  binary_sensor.off: 'off'
+  binary_sensor.on: 'on'
+  sensor.int17: 17
+  sensor.int170: 170
+  sensor.int200: 200
+  sensor.int3: 3
+  sensor.float10: 10.0
+  sensor.float5: 5.0
+  sensor.strNuit: 'Nuit'
+  sensor.strHome: 'home'
+
+tests:
+  test_1:
+    expected_result: Succeeded
+    conditions: binary_sensor.true and (sensor.strHome == 'home' and sensor.float10 > 1)
+  
+  test_2:
+    expected_result: Failed
+    conditions: binary_sensor.true and (sensor.strHome != 'home' and sensor.float10 > 1)
+
+  test_3:
+    expected_result: Failed
+    conditions: not binary_sensor.off and not binary_sensor.on and sensor.strNuit == 'Nuit'
+
+  test_4:
+    expected_result: Failed #this test will make the parser crash if the and operator evaluate the second operand wether the first one is true or false
+    conditions: sensor.strHome != 'home' and sensor.strHome < 15
+
+  test_5:
+    expected_result: Succeeded 
+    conditions: sensor.float10 != 'Home' and sensor.float10 < 15
+  
+
+
+    
diff --git a/unit_tests/test_template.yaml b/unit_tests/test_template.yaml
new file mode 100644
index 0000000..a74cf33
--- /dev/null
+++ b/unit_tests/test_template.yaml
@@ -0,0 +1,46 @@
+fake_entities:
+  binary_sensor.true: True
+  binary_sensor.false: False
+  binary_sensor.off: 'off'
+  binary_sensor.on: 'on'
+  sensor.int17: 17
+  sensor.int170: 170
+  sensor.int200: 200
+  sensor.int3: 3
+  sensor.float10: 10.0
+  sensor.float5: 5.0
+  sensor.strNuit: 'Nuit'
+  sensor.strHome: 'home'
+  binary_sensor.nottrue: False
+
+constants:
+  andtrap: False
+
+templates_library:
+  T1: binary_sensor.true or binary_sensor.false
+  T2: binary_sensor.on and binary_sensor.off == False
+  T3:
+    trigger_conditions: binary_sensor.off == False
+    blocking_conditions:
+      - binary_sensor.on
+
+tests:
+  test_1: 
+    expected_result: Succeeded
+    conditions: <T1>
+
+  test_2:
+    expected_result: Succeeded
+    conditions: 
+      template_conditions: <T2>
+      trigger_conditions: binary_sensor.true
+
+  test_3: 
+    expected_result: Succeeded
+    conditions: <T1>, <T2>
+
+  test_4:
+    expected_result: Failed
+    conditions: 
+      template_conditions: <T2>,<T3>
+      trigger_conditions: binary_sensor.true and binary_sensor.false
diff --git a/unit_tests/test_ternary_operator.yaml b/unit_tests/test_ternary_operator.yaml
new file mode 100644
index 0000000..2aaa17c
--- /dev/null
+++ b/unit_tests/test_ternary_operator.yaml
@@ -0,0 +1,56 @@
+fake_entities:
+  binary_sensor.true: True
+  binary_sensor.false: False
+  binary_sensor.off: 'off'
+  binary_sensor.on: 'on'
+  sensor.int17: 17
+  sensor.int170: 170
+  sensor.int200: 200
+  sensor.int3: 3
+  sensor.float10: 10.0
+  sensor.float5: 5.0
+  sensor.strNuit: 'Nuit'
+  sensor.strHome: 'home'
+  sensor.none:
+
+tests:  
+  test_1:
+    expected_result: Succeeded
+    conditions: "(binary_sensor.on ? 10 : 0) > sensor.int3"
+
+  test_2:
+    expected_result: Succeeded
+    conditions: "(binary_sensor.on ? sensor.float10 : 0) > sensor.int3"
+
+  test_3:
+    expected_result: Failed
+    conditions: "binary_sensor.off ? (binary_sensor.on or binary_sensor.off) : binary_sensor.off"
+
+  test_4:
+    expected_result: Failed
+    conditions: "binary_sensor.on ? binary_sensor.on and binary_sensor.off : binary_sensor.on"  
+
+  test_5:
+    expected_result: Succeeded
+    conditions: "((binary_sensor.on or binary_sensor.false) ? 5 : 1) > sensor.int3"
+
+  test_6:
+    expected_result: Failed
+    conditions: "((binary_sensor.on and binary_sensor.false) ? 5 : 1) > sensor.int3"
+
+  test_7:
+    expected_result: Succeeded
+    conditions: "(binary_sensor.on ? sensor.float10 : 0) > sensor.int3"
+  
+  test_none_ternary:
+    expected_result: Failed
+    conditions: "sensor.none != None ? sensor.none > 75 : False"
+
+  # test_15:
+  #   expected_result: Succeeded
+  #   conditions: "(binary_sensor.off ? (binary_sensor.on or binary_sensor.off) : (binary_sensor.off ? sensor.int3 : sensor.int17)) > sensor.int3"
+
+    
+
+
+    
diff --git a/unittests.py b/unittests.py
new file mode 100644
index 0000000..18d1c24
--- /dev/null
+++ b/unittests.py
@@ -0,0 +1,159 @@
+import smartcondition
+import os
+import yaml
+from expressionparser import ParsingException
+
+UNIT_TEST_PATH = "unit_tests"
+
+class AppDaemonMokup:
+    def __init__(self,fake_entitites):
+        self.entities = fake_entitites
+
+    def log(self,message,**kwargs):
+        error_level = f"[{kwargs['level']}]" if 'level' in kwargs else ""
+        print(f'{error_level}{message}')
+
+    def get_state(self,entity_id,attribute = None):
+        key = f"{entity_id}.{attribute}" if attribute != None else entity_id
+
+        return self.entities[key] if key in self.entities else None
+
+    def entity_exists(self,entity_id):
+        return entity_id in self.entities
+
+    #added a couple of method to be directly compatible with Condition Parser
+    def add_variable(self,variable_name): return self.entity_exists(variable_name)
+
+    def get_variable_value(self,variable_name): return self.get_state(variable_name)
+
+    def reset(self): pass
+
+def execute_unit_test(test_file):
+    failed_test = dict()
+
+    with open(test_file, 'r') as file:
+        test_config = yaml.safe_load(file)
+        if not 'fake_entities' in test_config:
+            print(f"Can't run test {test_file} fake_entities is not defined")
+            return False
+        else:
+            print(f"\nRunning test from {test_file}")
+
+        constants = test_config['constants'] if 'constants' in test_config else dict()
+        templates_library = test_config['templates_library'] if 'templates_library' in test_config else None
+        appdaemon = AppDaemonMokup(test_config['fake_entities'])
+
+        test_expression = None
+        #test_expression = "binary_sensor.on == not binary_sensor.false"
+        
+        if test_expression:
+            condition_parser = smartcondition.ConditionsParser(test_expression,appdaemon)
+            print(f"{condition_parser.parsed_data}")
+            result = condition_parser.evaluate()
+
+        for test in test_config['tests']:
+            try: conditions = smartcondition.Evaluator(appdaemon,test_config['tests'][test]['conditions'], constants = constants, log_init = False, log_no_valid_condition_details = True, templates_library = templates_library)
+            except ParsingException as e:
+                success = test_config['tests'][test]['expected_result'] == "ParsingException"
+
+                print(f"{test}: {'Success' if success else 'Failed'}")
+                if not success:
+                    print(f"{os.path.basename(test_file)} {test}: 'Parsing failed' with Exception {e}")
+                    failed_test[test] = test_config['tests'][test]
+                    print()
+                    continue
+                
+            else: 
+                if 'expected_entities_to_listen' in test_config['tests'][test]:
+                    expected_entities_to_listen = test_config['tests'][test]['expected_entities_to_listen']
+                    entities_to_listen = conditions.get_entities_to_listen_as_list()
+                    if sorted(expected_entities_to_listen) != sorted(entities_to_listen):
+                        failed_test[test] = test_config['tests'][test]
+                        print(f"{test}: Failed")
+                        print(f"entities_to_listen = {entities_to_listen}, expected : {expected_entities_to_listen}")
+                        continue
+
+
+                result = conditions.evaluate(False)
+                success = result.name == test_config['tests'][test]['expected_result']
+                print(f"{test}: {'Success' if success else 'Failed'}")
+                if not success: 
+                    failed_test[test] = test_config['tests'][test]
+                    conditions.log_evaluation_result()
+                    print()
+                    continue
+                
+
+        print()
+        if len(failed_test) > 0:
+            print(f"{len(failed_test)} tests have failed in {os.path.basename(test_file)} :")
+            for test in failed_test:
+                print(f"{test} : {test_config['tests'][test]['conditions']}")
+                print(f"Expected result was {test_config['tests'][test]['expected_result']}")
+        else:
+            print("All the tests have succeeded")
+            
+    
+    return len(failed_test) == 0
+
+def tiny_parser():
+    import pyparsing
+
+    variable_names = pyparsing.Combine(pyparsing.Literal('$') + pyparsing.Word(pyparsing.alphanums + '_'))
+
+    #integer = pyparsing.Word(pyparsing.nums)
+    integer = pyparsing.pyparsing_common.signed_integer
+
+    double = pyparsing.Combine(pyparsing.Word(pyparsing.nums) + '.' + pyparsing.Word(pyparsing.nums))
+
+    parser = pyparsing.infix_notation(
+                variable_names | double | integer,
+                [
+                    ('not', 1, pyparsing.opAssoc.RIGHT),
+                    ('**', 2, pyparsing.opAssoc.RIGHT),
+                    ('-',  1, pyparsing.opAssoc.RIGHT),
+                    (pyparsing.oneOf('* / // %'), 2, pyparsing.opAssoc.LEFT),
+                    (pyparsing.oneOf('+ -'), 2, pyparsing.opAssoc.LEFT),
+                    (pyparsing.oneOf('> >= < <= == !='), 2, pyparsing.opAssoc.LEFT),                    
+                    ('and', 2, pyparsing.opAssoc.LEFT),
+                    ('or',  2, pyparsing.opAssoc.LEFT)
+                ]
+            )
+
+    examples = [
+        "$true and not 10 == 9",
+        "$true == $false",
+        "$true == not $false",
+        "$true == (not $false)",
+        "5 * 10 ** -2",
+        "5 * 10 * -2",
+        "5 * 10 ** (-2)",
+        "5 * -10 ** 2",
+        "5 * (-10) ** 2",    
+        "5 and not 8",
+        "5 and -8",
+        "1 ** -2",
+        "-1 ** 2",
+    ]
+
+    longest = max(map(len, examples))
+
+    for ex in examples:
+        result = parser.parseString(ex)
+        print(f'{ex:{longest}}  <=>  {result}')
+
+
+#tiny_parser()
+failed_test = list()
+
+path = os.path.join(os.path.dirname(os.path.abspath(__file__)),UNIT_TEST_PATH)
+with os.scandir(path) as it:
+    for entry in it:                                                                       
+        if entry.is_file() and entry.name.lower().endswith('.yaml'):
+            if not execute_unit_test(os.path.join(path , entry.name)):
+                failed_test.append(entry.name)
+
+if len(failed_test):
+    print(f"{len(failed_test)} test file(s) have failed :")
+    for test in failed_test:
+        print(f"{test}")
\ No newline at end of file
diff --git a/virtualsensors.py b/virtualsensors.py
new file mode 100644
index 0000000..d6e5c53
--- /dev/null
+++ b/virtualsensors.py
@@ -0,0 +1,672 @@
+import appdaemon.plugins.hass.hassapi as hass
+import smartcondition as SmartCondition
+import smartvalue as SmartValue
+from kwargsparser import kwargsParser
+from expressionparser import ParsingException
+import time
+from logger_interface import LoggerInterface
+
+class VirtualSensorBase:
+    def __init__(self,ad_api,logger_interface, virtual_sensor_name = None, sensor_name = None,super_entity_id = None, yaml_block = None,templates_library = None, constants = None,self_initialize = False):
+        assert yaml_block
+        self.ad_api = ad_api
+        self.logger_interface = logger_interface
+
+        # sensor_name should be something like 'domain.name' whereas virtual_sensor_name should be only 'name'
+        # only one should be provided and the other one will be deduced. 
+        # the regular use case is giving virtual_sensor_name. 
+        # Giving a specific sensor_name is usefull when the entity exist before with a different domain
+        if virtual_sensor_name:
+            assert sensor_name == None
+            self.virtual_sensor_name = virtual_sensor_name            
+            self.sensor_name = self.generate_sensor_name(virtual_sensor_name)
+        else:
+            assert virtual_sensor_name == None
+            self.sensor_name = sensor_name
+            self.virtual_sensor_name = sensor_name.split('.')[1]
+        self.sensor_domain = self.sensor_name.split(".")[0]
+
+        self.yaml_block = yaml_block
+        self.templates_library = templates_library
+
+        try: self.attributes = self.yaml_block['attributes']
+        except (TypeError,KeyError): self.attributes = dict()
+
+        if constants: self.constants = dict(constants) # we don't want to modify the parent dict
+        else: self.constants = {'self' : self.sensor_name }
+        if super_entity_id != None:
+            self.constants['super'] = super_entity_id
+
+        if self_initialize: 
+            self._initialize()
+
+    def generate_sensor_name(self,virtual_sensor_name):
+        return f"sensor.{virtual_sensor_name}"
+        # TODO : restore that code once we rename the sensor
+        # splitted_name = virtual_sensor_name.split(".")
+        # assert len(splitted_name) == 2,f"Invalid virtual sensor name : {virtual_sensor_name}"
+        # return f"sensor.{splitted_name[1]}"
+
+    def log(self,message): self.logger_interface.log_info(f"[{self.sensor_name}]{message}")
+
+    def log_info(self,message): self.logger_interface.log_info(f"[{self.sensor_name}]{message}")
+
+    def log_warning(self,message): self.logger_interface.log_warning(f"[{self.sensor_name}]{message}")
+
+    def log_error(self,message): self.logger_interface.log_error(f"[{self.sensor_name}]{message}")
+
+    def generate_dependencies_list(self): return []
+
+    def generate_attributes_dependencies_list(self):
+        dependencies = list()
+        if 'sensor_attributes' in self.yaml_block:
+            for key,entity in self.yaml_block['sensor_attributes'].items():
+                dependencies.append(entity)
+        return dependencies
+
+    def _initialize(self): 
+        if 'sensor_attributes' in self.yaml_block:
+            for attribute_name,sensor_name in self.yaml_block['sensor_attributes'].items():
+                if not self.ad_api.entity_exists(sensor_name):
+                    self.log_error(f"Error in sensor_attribute. {attribute_name}:{sensor_name}. {sensor_name} doesn't exist")
+                else:
+                    self.attributes[attribute_name] = self.ad_api.get_state(sensor_name)
+                    self.ad_api.listen_state(self.on_attribute_sensor_state_change,sensor_name)
+
+        try: self.initialize()
+        except ParsingException as e: 
+            self.log_error(e)
+        self.ad_api.set_state(self.sensor_name, attributes = self.attributes)
+
+    def on_attribute_sensor_state_change(self, entity, attribute, old, new, kwargs):
+        attributes_update = False
+        for attribute_name,sensor_name in self.yaml_block['sensor_attributes'].items():
+            if sensor_name == entity:
+                self.attributes[attribute_name] = new
+                attributes_update = True
+
+        if attributes_update:
+            self.ad_api.set_state(self.sensor_name, attributes = self.attributes)
+
+    def initialize(self): assert False
+
+    def extract_dependencies_from_entities_to_listen(self,entities_to_listen,dependencies):
+        for entity_with_attribute in entities_to_listen:
+            splitted_entity = entity_with_attribute.split('.')
+            assert len(splitted_entity) == 3 or len(splitted_entity) == 2
+            if len(splitted_entity) == 3:
+                entity = f"{splitted_entity[0]}.{splitted_entity[1]}"
+            else:
+                entity = entity_with_attribute
+
+            if entity != self.sensor_name and not entity in dependencies:
+                dependencies.append(entity)
+
+class Averager(VirtualSensorBase):
+    def initialize(self):
+        self.round = None
+        self.confirm_steady_cb_handle = None
+        self.confirm_tendency_cb_handle = None
+        self.icons_config = None
+        self.sensors_list = list()
+        self.average_sensor_attributes = dict()
+        self.all_sensors_are_mandatory = True
+        if isinstance(self.yaml_block,dict):
+            if 'all_sensors_are_mandatory' in self.yaml_block: self.all_sensors_are_mandatory = self.yaml_block['all_sensors_are_mandatory']
+            if 'round' in self.yaml_block: self.round = self.yaml_block['round']
+            if 'sensors' in self.yaml_block: 
+                self.sensors_list = self.yaml_block['sensors'] if isinstance(self.yaml_block['sensors'],list) else [self.yaml_block['sensors']]
+            if 'icons' in self.yaml_block:
+                self.icons_config = self.yaml_block['icons']
+            if 'attributes' in self.yaml_block:
+                self.average_sensor_attributes = self.yaml_block['attributes']
+            else:
+                self.average_sensor_attributes = { 'tendency' : 'steady' }
+        else:
+            self.sensors_list = [self.yaml_block]
+
+        for sensor in self.sensors_list:
+            self.ad_api.listen_state(self.on_sensor_state_change,sensor)
+
+        self.average_sensor = self.ad_api.get_entity(self.sensor_name)
+
+        if not self.average_sensor.exists():
+            average = self.compute_average()
+            self.average_sensor.set_state(state = average if average else 'unavailable',attributes = self.average_sensor_attributes)
+
+        self.update_average() 
+
+    def generate_dependencies_list(self):
+        if isinstance(self.yaml_block,dict):
+            if 'sensors' in self.yaml_block: 
+                return self.yaml_block['sensors'] if isinstance(self.yaml_block['sensors'],list) else [self.yaml_block['sensors']]
+            else:
+                return []
+        else:
+            return [ self.yaml_block ]
+
+    def on_sensor_state_change(self, *args):
+        self.update_average()
+
+    def compute_average(self):
+        result_count = 0
+        average = 0
+        for sensor in self.sensors_list:
+            try:
+                value = float(self.ad_api.get_state(sensor))
+                result_count += 1
+                average += value
+            except (TypeError,ValueError):
+                if self.all_sensors_are_mandatory:
+                    return None
+
+        if result_count == 0: return None
+        average /= result_count
+        if self.round != None:
+            average = round(average,self.round)
+        return average
+
+
+    def update_average(self):
+        try: prev_average =  float(self.average_sensor.get_state())
+        except (TypeError,ValueError): prev_average = None
+        new_average = self.compute_average()
+        if new_average and new_average != prev_average:
+            #if we don't change the value for one hour, let's go back to the default icon
+            if self.confirm_steady_cb_handle != None:
+                self.ad_api.cancel_timer(self.confirm_steady_cb_handle)
+                self.confirm_steady_cb_handle = None
+            self.confirm_steady_cb_handle = self.ad_api.run_in(self.on_confirm_steady, 60 * 60)
+
+            if prev_average:
+                if self.confirm_tendency_cb_handle:
+                    self.ad_api.cancel_timer(self.confirm_tendency_cb_handle)
+                    self.confirm_tendency_cb_handle = None
+
+                prev_tendency = self.average_sensor.get_state(attribute = 'tendency')
+                if new_average > prev_average:
+                    if prev_tendency == 'down':
+                        self.average_sensor_attributes['tendency'] = 'steady'
+                        self.confirm_tendency_cb_handle = self.ad_api.run_in(self.on_confirm_tendency, 30 * 60,tendency = 'up')
+                    else:
+                        self.average_sensor_attributes['tendency'] = 'up'
+                else:
+                    if prev_tendency == 'up':
+                        self.average_sensor_attributes['tendency'] = 'steady'
+                        self.confirm_tendency_cb_handle = self.ad_api.run_in(self.on_confirm_tendency, 30 * 60,tendency = 'down')
+                    else:
+                        self.average_sensor_attributes['tendency'] = 'down'
+
+                self.update_icon_attribute()
+
+            self.average_sensor.set_state(state = new_average,attributes = self.average_sensor_attributes)
+
+    def update_icon_attribute(self):
+        if self.icons_config:
+            if self.average_sensor_attributes['tendency'] == 'up' and 'up' in self.icons_config:
+                self.average_sensor_attributes['icon'] = self.icons_config['up']
+            if self.average_sensor_attributes['tendency'] == 'down' and 'down' in self.icons_config:
+                self.average_sensor_attributes['icon'] = self.icons_config['down']
+            if self.average_sensor_attributes['tendency'] == 'steady' and 'default' in self.icons_config:
+                self.average_sensor_attributes['icon'] = self.icons_config['default']
+
+    def on_confirm_tendency(self, kwargs):
+        tendency = kwargs['tendency']
+        self.confirm_tendency_cb_handle = None
+
+        self.average_sensor_attributes['tendency'] = tendency
+        self.update_icon_attribute()
+        self.average_sensor.set_state(attributes = self.average_sensor_attributes)
+
+    def on_confirm_steady(self, kwargs):
+        self.confirm_steady_cb_handle = None
+        self.average_sensor_attributes['tendency'] = 'steady'
+        self.update_icon_attribute()
+        self.average_sensor.set_state(attributes = self.average_sensor_attributes)
+
+class ValueSelector(VirtualSensorBase):
+    class SelectorConfig:
+        def __init__(self,name,conditions,value,is_smart_value):
+            self.conditions = conditions
+            self.value = str(value) #value like "17" are deserialized as int
+            self.name = str(name)
+            self.is_smart_value = is_smart_value
+
+    class Selector:
+        def __init__(self,config, ad_api = None,logger_interface = None, constants = None, templates_library = None):
+            self.config = config
+            self.conditions = SmartCondition.Evaluator(ad_api,self.config.conditions, logger_interface = logger_interface, unavaibility_result = SmartCondition.Result.Failed,condition_name = self.config.name,  log_callback_trigger_reason = False, constants = constants, templates_library = templates_library)
+            if config.is_smart_value:
+                self.value = SmartValue.Evaluator(ad_api,self.config.value, logger_interface = logger_interface,expression_name = self.config.name, log_callback_trigger_reason = False, constants = constants)
+            else:
+                self.value = None
+
+        def compute_value(self):
+            if self.value: return self.value.evaluate(False)
+            else: return self.config.value
+
+        def get_entities_to_listen(self): 
+            if self.value:
+                entities_to_listen = list(self.conditions.get_entities_to_listen_as_list())
+                entities_to_listen.extend(self.value.get_entities_to_listen_as_list())
+                return entities_to_listen
+            else:
+                return self.conditions.get_entities_to_listen_as_list()
+
+
+    def initialize(self):
+        self.value_selectors = list()
+        selectors_config = self.process_config()
+
+        self.output_sensor = self.ad_api.get_entity(self.sensor_name)
+
+        if not self.output_sensor.exists():
+            default_config = selectors_config[-1] #the last config is the default config
+            if default_config.is_smart_value:
+                default_value = SmartValue.Evaluator(self.ad_api,default_config.value,expression_name = default_config.name, logger_interface = self.logger_interface, log_callback_trigger_reason = False, constants = self.constants).evaluate()
+            else:
+                default_value = default_config.value
+            self.set_value(default_value)
+
+        entities_to_listen = set()
+
+        for config in selectors_config:
+            new_selector = self.Selector(config,ad_api = self.ad_api, logger_interface = self.logger_interface, constants = self.constants, templates_library = self.templates_library)
+            self.value_selectors.append(new_selector)
+            entities_to_listen.update(new_selector.get_entities_to_listen())
+
+        for entity_to_listen in entities_to_listen:
+            slitted_entity = entity_to_listen.split(".")
+            if len(slitted_entity) == 3:
+                self.ad_api.listen_state(self.on_entities_to_listen_changed,f"{slitted_entity[0]}.{slitted_entity[1]}",attribute = slitted_entity[2])
+            else:
+                self.ad_api.listen_state(self.on_entities_to_listen_changed,entity_to_listen)
+
+        self.update_value()
+
+    def on_entities_to_listen_changed(self, entity, attribute, old, new, kwargs):
+        self.update_value()
+
+    def process_config(self) -> list[SelectorConfig]:
+        configs = list()
+        #self.log(f"yaml_block:{self.yaml_block}")
+        if 'values' in self.yaml_block: values_block = self.yaml_block['values']
+        else: values_block = self.yaml_block
+
+        for key,item in values_block.items():            
+            try: conditions_block = item['conditions']
+            except (TypeError,KeyError): conditions_block = item
+
+            try: 
+                value = item['value']
+                is_smart_value = True
+            except (TypeError,KeyError): 
+                value = key
+                is_smart_value = False  #SmartValue are not supported for 'inline' value like "17: some_condition"
+
+            configs.append(self.SelectorConfig(key,conditions_block,value,is_smart_value))
+
+        return configs
+
+    def generate_dependencies_list(self):
+        dependencies = list()
+        
+        selectors_config = self.process_config()
+
+        for config in selectors_config:
+            #self.log(f"config: name = {config.name},conditions = {config.conditions},value = {config.value}")
+            conditions = SmartCondition.Evaluator(self.ad_api,config.conditions, logger_interface = self.logger_interface,condition_name = config.name, sensor_existence_validation = False, constants = self.constants, log_init = False)
+            self.extract_dependencies_from_entities_to_listen(conditions.get_entities_to_listen_as_list(),dependencies)
+            
+            if config.is_smart_value:
+                value = SmartValue.Evaluator(self.ad_api,config.value,expression_name = config.name, sensor_existence_validation = False, constants = self.constants, log_init = False)
+                self.extract_dependencies_from_entities_to_listen(value.get_entities_to_listen_as_list(),dependencies)
+
+        return dependencies
+
+    def on_value_condition_change(self, *kwargs):
+        self.update_value()
+
+    def set_value(self, value):
+        if self.sensor_domain == 'number':
+            self.ad_api.call_service("number/set_value", entity_id = self.sensor_name,value = value)
+        else:
+            self.output_sensor.set_state(state = value)
+
+    def update_value(self):
+        previous_value = str(self.output_sensor.get_state())
+
+        for selector in self.value_selectors:
+            if selector.conditions.evaluate(False) == SmartCondition.Result.Succeeded:
+                new_value = selector.compute_value()
+                if previous_value != str(new_value):
+                    #TODO: find a way to know wether if it's the condition or the value that trigger the update
+                    selector.conditions.log_callback_trigger_reason()
+                    selector.conditions.log_evaluation_result()
+                    if selector.value:
+                        selector.value.log_callback_trigger_reason()
+                        selector.value.log_evaluation_result()
+                    self.set_value(new_value)
+                break
+
+class ContinuousCondition(VirtualSensorBase):
+    def initialize(self):
+        self.cb_handle = None
+        self.time = self.yaml_block['time']
+        try: self.ignore_unavailable_condition = self.yaml_block['ignore_unavailable_condition']
+        except KeyError: self.ignore_unavailable_condition = False
+        try: self.invert = self.yaml_block['invert']
+        except KeyError: self.invert = False
+        self.log(f"Initializing continuous condition for {self.sensor_name}")
+        self.output_sensor = self.ad_api.get_entity(self.sensor_name)
+
+        if not self.output_sensor.exists():
+            self.log(f"{self.sensor_name} does not exist")
+            try: 
+                self.output_sensor.set_state(state = self.yaml_block['default_value'])
+                self.log(f"adding {self.sensor_name} with default state {self.yaml_block['default_value']}")
+            except KeyError: 
+                self.output_sensor.set_state(state = 'off')
+                self.log(f"adding {self.sensor_name} with default state off")
+        else:
+            self.log(f"{self.sensor_name} already exist with state = {self.output_sensor.get_state()}")
+
+        if self.invert:
+            succeed_cb = self.on_condition_fail
+            fail_cb = self.on_condition_succeed
+        else:
+            succeed_cb = self.on_condition_succeed
+            fail_cb = self.on_condition_fail
+
+        self.condition = SmartCondition.Evaluator(self.ad_api,self.yaml_block['conditions'], unavaibility_result = SmartCondition.Result.Unavailable if self.ignore_unavailable_condition else None, logger_interface = self.logger_interface,condition_name = self.sensor_name,on_succeed_cb = succeed_cb, on_fail_cb = fail_cb, constants = self.constants, templates_library = self.templates_library)
+        # new_value = 'on' if self.condition.evaluate() == SmartCondition.Result.Succeeded else 'off'
+        # self.output_sensor.set_state(state = new_value)
+
+    def generate_sensor_name(self,virtual_sensor_name):
+        return f"binary_sensor.{virtual_sensor_name}"
+        #TODO : restore that code once we rename the sensor
+        splitted_name = virtual_sensor_name.split(".")
+        assert len(splitted_name) == 2,f"Invalid virtual sensor name : {virtual_sensor_name}"
+        return f"binary_sensor.{splitted_name[1]}"
+
+    def generate_dependencies_list(self):
+        dependencies = list()
+        condition = SmartCondition.Evaluator(self.ad_api,self.yaml_block['conditions'], logger_interface = self.logger_interface, constants = self.constants, templates_library = self.templates_library, sensor_existence_validation = False, log_init = False)
+        self.extract_dependencies_from_entities_to_listen(condition.get_entities_to_listen_as_list(),dependencies)
+
+        return dependencies
+
+    def register_callback(self):
+        if self.cb_handle == None:
+            self.cb_handle = self.ad_api.run_in(self.on_time_elapse, self.time)
+
+    def cancel_callback(self):
+        if self.cb_handle != None:
+            self.ad_api.cancel_timer(self.cb_handle)
+            self.cb_handle = None
+
+    def on_time_elapse(self, kwargs):
+        self.cb_handle = None
+        value = 'off' if self.invert else 'on'
+        if self.output_sensor.get_state() != value:
+            self.output_sensor.set_state(state = value)
+
+    def on_condition_succeed(self):
+        self.register_callback()
+
+    def on_condition_fail(self):
+        self.cancel_callback()
+        value = 'on' if self.invert else 'off'
+        if self.output_sensor.get_state() != value:
+            self.output_sensor.set_state(state = value)
+
+class RetainCondition(VirtualSensorBase):
+    def initialize(self):
+        self.cb_handle = None
+        self.retain_time = self.yaml_block['retain_time']
+        try: self.reset_retain_time_on_new_success = self.yaml_block['reset_retain_time_on_new_success']
+        except KeyError: self.reset_retain_time_on_new_success = True
+        self.log(f"Initializing retain condition for {self.sensor_name}")
+        self.output_sensor = self.ad_api.get_entity(self.sensor_name)
+
+        if not self.output_sensor.exists():
+            self.log(f"{self.sensor_name} does not exist")
+            try: 
+                self.output_sensor.set_state(state = self.yaml_block['default_value'])
+                self.log(f"adding {self.sensor_name} with default state {self.yaml_block['default_value']}")
+            except KeyError: 
+                self.output_sensor.set_state(state = 'off')
+                self.log(f"adding {self.sensor_name} with default state off")
+        else:
+            self.log(f"{self.sensor_name} already exist with state = {self.output_sensor.get_state()}")
+
+        self.condition = SmartCondition.Evaluator(self.ad_api,self.yaml_block['conditions'], logger_interface = self.logger_interface,condition_name = self.sensor_name,on_succeed_cb = self.on_condition_succeed, on_fail_cb = self.on_condition_fail, constants = self.constants, templates_library = self.templates_library)
+        # new_value = 'on' if self.condition.evaluate() == SmartCondition.Result.Succeeded else 'off'
+        # self.output_sensor.set_state(state = new_value)
+
+    def generate_sensor_name(self,virtual_sensor_name):
+        return f"binary_sensor.{virtual_sensor_name}"
+
+    def generate_dependencies_list(self):
+        dependencies = list()
+        condition = SmartCondition.Evaluator(self.ad_api,self.yaml_block['conditions'], logger_interface = self.logger_interface, constants = self.constants, templates_library = self.templates_library, sensor_existence_validation = False, log_init = False)
+        self.extract_dependencies_from_entities_to_listen(condition.get_entities_to_listen_as_list(),dependencies)
+
+        return dependencies
+
+    def register_callback(self):
+        if self.cb_handle == None:
+            self.cb_handle = self.ad_api.run_in(self.on_time_elapse, self.retain_time)
+
+    def cancel_callback(self):
+        if self.cb_handle != None:
+            self.ad_api.cancel_timer(self.cb_handle)
+            self.cb_handle = None
+
+    def on_time_elapse(self, kwargs):
+        self.cb_handle = None
+        if self.condition.evaluate() == SmartCondition.Result.Failed:
+            if self.output_sensor.get_state() != 'off':
+                self.output_sensor.set_state(state = 'off')
+
+    def on_condition_succeed(self):
+        if self.output_sensor.get_state() != 'on':
+            self.output_sensor.set_state(state = 'on')
+        if self.reset_retain_time_on_new_success: 
+            self.cancel_callback() 
+        self.register_callback()
+
+    def on_condition_fail(self):
+        # we don't want to set the sensor to off during the timer
+        if self.cb_handle == None:
+            if self.output_sensor.get_state() != 'off':
+                self.output_sensor.set_state(state = 'off')
+
+class BinarySensor(VirtualSensorBase):
+    def initialize(self):
+        self.output_sensor = self.ad_api.get_entity(self.sensor_name)
+
+        if not self.output_sensor.exists():
+            self.output_sensor.set_state(state = 'off',attributes = self.attributes)
+        
+        #self.ad_api.log(f"Creating Binary Sensor: binary_sensor = {self.virtual_sensor_name}, yaml_block = {self.yaml_block}")
+        self.condition = SmartCondition.Evaluator(self.ad_api,self.get_expression_yaml(), logger_interface = self.logger_interface, unavaibility_result = SmartCondition.Result.Unavailable,condition_name = self.virtual_sensor_name,on_change_cb = self.on_sensor_change, constants = self.constants, templates_library = self.templates_library)
+        new_value = 'on' if self.condition.evaluate() == SmartCondition.Result.Succeeded else 'off'
+        self.output_sensor.set_state(state = new_value)
+
+    def on_sensor_change(self,prev_result,result):
+        if result == SmartCondition.Result.Unavailable: self.output_sensor.set_state(state = 'unavailable')
+        elif result == SmartCondition.Result.Succeeded: self.output_sensor.set_state(state = 'on')
+        elif result == SmartCondition.Result.Failed:  self.output_sensor.set_state(state = 'off')
+        # else: Disabled means we keep the previous value
+
+    def generate_dependencies_list(self):
+        dependencies = list()
+        condition = SmartCondition.Evaluator(self.ad_api,self.get_expression_yaml(), logger_interface = self.logger_interface, condition_name = [self.virtual_sensor_name,"generate_dependencies_list"],constants = self.constants, templates_library = self.templates_library, sensor_existence_validation = False, log_init = False)
+        self.extract_dependencies_from_entities_to_listen(condition.get_entities_to_listen_as_list(),dependencies)
+
+        return dependencies
+
+    def get_expression_yaml(self):
+        try: return self.yaml_block['conditions']
+        except (TypeError,KeyError): return self.yaml_block
+
+    def generate_sensor_name(self,virtual_sensor_name):
+        return f"binary_sensor.{virtual_sensor_name}"
+        #TODO : restore that code once we rename the sensor
+        splitted_name = virtual_sensor_name.split(".")
+        assert len(splitted_name) == 2,f"Invalid virtual sensor name : {virtual_sensor_name}"
+        return f"binary_sensor.{splitted_name[1]}"
+
+class ValueSensor(VirtualSensorBase):
+    def initialize(self):
+        # should be done in the base class
+        # try: self.sensor_attributes = self.yaml_block['attributes']
+        # except TypeError: self.sensor_attributes = {}
+
+        self.output_sensor = self.ad_api.get_entity(self.sensor_name)
+        if not self.output_sensor.exists():
+            self.output_sensor.set_state(state = 0, attributes = self.attributes)
+        
+        self.smart_value = SmartValue.Evaluator(self.ad_api,self.get_expression_yaml(), logger_interface = self.logger_interface, expression_name = self.virtual_sensor_name,on_change_cb = self.on_sensor_change, constants = self.constants)
+        new_value = self.smart_value.evaluate()
+        self.output_sensor.set_state(state = new_value)
+
+    def on_sensor_change(self,prev_result,result):
+        self.output_sensor.set_state(state = result, attributes = self.attributes)
+
+    def get_expression_yaml(self):
+        try: return self.yaml_block['value']
+        except (TypeError,KeyError): return self.yaml_block
+
+    def generate_dependencies_list(self):
+        dependencies = list()
+        smart_value = SmartValue.Evaluator(self.ad_api,self.get_expression_yaml(), logger_interface = self.logger_interface, expression_name = self.virtual_sensor_name, constants = self.constants, sensor_existence_validation = False, log_init = False)
+        self.extract_dependencies_from_entities_to_listen(smart_value.get_entities_to_listen_as_list(),dependencies)
+
+        return dependencies
+
+    def generate_sensor_name(self,virtual_sensor_name):
+        return f"sensor.{virtual_sensor_name}"
+
+class VirtualSensors():
+
+    def __init__(self, ad_api = None,logger_interface = None, super_entity_id = None, yaml_block = None ,args_to_ignore_in_validation = [], constants = None, templates_library = None):
+        assert ad_api
+        assert yaml_block
+        assert logger_interface
+        self.ad_api = ad_api
+        self.virtual_sensors = dict()
+        self.logger_interface = logger_interface
+
+        parser = kwargsParser(yaml_block,lambda string: logger_interface.log_error(string),lambda string: logger_interface.log_warning(string))
+
+        default_values = parser.parse_args('default_values',{})
+        for sensor_name,default_value in default_values.items():
+            if not self.ad_api.entity_exists(sensor_name):
+                self.logger_interface.log_info(f"Creating sensor {sensor_name} = {default_value}")
+                self.ad_api.set_state(sensor_name, state = str(default_value))
+
+        averagers = parser.parse_args('averagers',{})
+        for averager in averagers:
+            self.virtual_sensors[f"sensor.{averager}"] = Averager(self.ad_api,self.logger_interface,averager,super_entity_id = super_entity_id,yaml_block = yaml_block['averagers'][averager],constants = constants, templates_library = templates_library)
+
+        continuous_conditions = parser.parse_args('continuous_conditions',{})
+        for continuous_condition in continuous_conditions:
+            self.virtual_sensors[f"binary_sensor.{continuous_condition}"] = ContinuousCondition(self.ad_api,self.logger_interface,continuous_condition,super_entity_id = super_entity_id,yaml_block = yaml_block['continuous_conditions'][continuous_condition],templates_library = templates_library)
+
+        binary_sensors = parser.parse_args('binary_sensors',{})
+        for binary_sensor in binary_sensors:
+            #self.logger_interface.log_info(f"Creating Binary Sensor: binary_sensor = {binary_sensor}, super_entity_id = {super_entity_id}, yaml_block = {yaml_block['binary_sensors']}")
+            self.virtual_sensors[f"binary_sensor.{binary_sensor}"] = BinarySensor(self.ad_api,self.logger_interface,binary_sensor,super_entity_id = super_entity_id,yaml_block = yaml_block['binary_sensors'][binary_sensor],constants = constants,templates_library = templates_library)
+
+        value_selectors = parser.parse_args('value_selectors',{})
+        for value_selector in value_selectors:
+            self.virtual_sensors[f"sensor.{value_selector}"] = ValueSelector(self.ad_api,self.logger_interface,value_selector,super_entity_id = super_entity_id,yaml_block = yaml_block['value_selectors'][value_selector],constants = constants,templates_library = templates_library)
+
+        sensors = parser.parse_args('sensors',{})
+        for sensor in sensors:
+            splitted_sensor = sensor.split('.')
+            if len(splitted_sensor) != 2:
+                self.logger_interface.log_error(f"Invalid sensor name {splitted_sensor}")
+
+            if splitted_sensor[0] == 'binary_sensor':
+                self.virtual_sensors[f"binary_sensor.{splitted_sensor[1]}"] = BinarySensor(self.ad_api,self.logger_interface,splitted_sensor[1],super_entity_id = super_entity_id,yaml_block = yaml_block['sensors'][sensor],constants = constants,templates_library = templates_library)
+            elif splitted_sensor[0] == 'sensor':
+                self.virtual_sensors[f"sensor.{splitted_sensor[1]}"] = ValueSensor(self.ad_api,self.logger_interface,splitted_sensor[1],super_entity_id = super_entity_id,yaml_block = yaml_block['sensors'][sensor],constants = constants,templates_library = templates_library)
+            elif splitted_sensor[0] == 'continuous_condition':
+                self.virtual_sensors[f"binary_sensor.{splitted_sensor[1]}"] = ContinuousCondition(self.ad_api,self.logger_interface,splitted_sensor[1],super_entity_id = super_entity_id,yaml_block = yaml_block['sensors'][sensor],constants = constants,templates_library = templates_library)
+            elif splitted_sensor[0] == 'averager':
+                self.virtual_sensors[f"sensor.{splitted_sensor[1]}"] = Averager(self.ad_api,self.logger_interface,splitted_sensor[1],super_entity_id = super_entity_id,yaml_block = yaml_block['sensors'][sensor],constants = constants,templates_library = templates_library)
+            elif splitted_sensor[0] == 'value_selector':
+                self.virtual_sensors[f"sensor.{splitted_sensor[1]}"] = ValueSelector(self.ad_api,self.logger_interface,splitted_sensor[1],super_entity_id = super_entity_id,yaml_block = yaml_block['sensors'][sensor],constants = constants,templates_library = templates_library)
+            elif splitted_sensor[0] == 'retain_condition':
+                self.virtual_sensors[f"binary_sensor.{splitted_sensor[1]}"] = RetainCondition(self.ad_api,self.logger_interface,splitted_sensor[1],super_entity_id = super_entity_id,yaml_block = yaml_block['sensors'][sensor],constants = constants,templates_library = templates_library)
+            else:
+                self.logger_interface.log_error(f"Invalid sensor prefix {splitted_sensor[0]}")
+
+        parser.validate_args(args_to_ignore_in_validation)
+
+        dependencies_graph = dict()
+        for sensor_name, virtual_sensor in self.virtual_sensors.items():
+            try: 
+                dependencies_graph[sensor_name] = virtual_sensor.generate_dependencies_list()
+                # add the dependencies from the attributes
+                dependencies_graph[sensor_name].extend(virtual_sensor.generate_attributes_dependencies_list())
+                #self.logger_interface.log_info(f"Dependencies = {dependencies_graph}")
+            except ParsingException as e: 
+                self.logger_interface.log_error(f"[Dependencies][{sensor_name}] {e}")
+            
+        self.remove_obsolete_dependencies(dependencies_graph)
+
+        while len(dependencies_graph) > 0:
+            virtual_sensor_initialized = list()
+            #self.logger_interface.log_info(f"Dependencies = {dependencies_graph}")
+
+            #initialize sensor with no dependencies
+            for sensor_name, dependencies_list in dependencies_graph.items():
+                if len(dependencies_list) == 0:
+                    virtual_sensor_initialized.append(sensor_name)
+                    self.virtual_sensors[sensor_name]._initialize()
+
+            #removing initialized sensors from dependencies_graph
+            for sensor_name in virtual_sensor_initialized:
+                del dependencies_graph[sensor_name]
+
+            #if didn't initialized any sensors, we are in a circular dependencies
+            ignore_sensor = None
+            if len(virtual_sensor_initialized) == 0:
+                foundInDefaultValues = False
+                for sensor_name in dependencies_graph:
+                    if sensor_name in default_values:
+                        self.logger_interface.log_info(f"Found circular dependencies in the following sensors : {dependencies_graph}. The default values of {sensor_name} will be use to break it.")
+                        ignore_sensor = sensor_name
+                        foundInDefaultValues = True
+                        break
+
+                if not foundInDefaultValues:
+                    self.logger_interface.log_error(f"Found circular dependencies in the following sensors : {dependencies_graph}. You can give a default value with 'default_values' to one of them to break it.")
+                    break
+
+            #remove all dependencies towards sensors that are already been initialized
+            self.remove_obsolete_dependencies(dependencies_graph,ignore_sensor)
+
+    def remove_obsolete_dependencies(self, dependencies_graph, ignore_sensor = None):
+        for sensor_name, dependencies_list in dependencies_graph.items():
+            current_dependencies = list()
+            for dependency in dependencies_list:
+                if dependency in dependencies_graph and dependency != ignore_sensor:
+                    current_dependencies.append(dependency)
+            dependencies_graph[sensor_name] = current_dependencies
+
+
+    def on_sensor_change(self,sensor_name,prev_result,result):
+        if result == SmartCondition.Result.Succeeded: 
+            self.ad_api.set_state(f'binary_sensor.{sensor_name}',state = 'on')
+        else : 
+            self.ad_api.set_state(f'binary_sensor.{sensor_name}',state = 'off')
+
+class VirtualSensorsApp(hass.Hass):
+    def initialize(self):
+        self.logger_interface = LoggerInterface(self.get_ad_api(),default_log = "virtualsensors_log")
+        self.virtual_sensors = VirtualSensors(ad_api = self.get_ad_api(),logger_interface = self.logger_interface,yaml_block = self.args,args_to_ignore_in_validation = ['module','class','global_dependencies','priority'])
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