migration from ha-cantegrill repo

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()