Garage Door State Machine initial version complete

It now tells you if the door is open or closed. And by making
the door a class, in the future I could design this to give state
of all doors.

raspigaragealert/alert.py

@@ -1,12 +1,14 @@
-import RPi.GPIO as GPIO
+from raspigaragealert import garage_door as door
 
 
 def main():
-    GPIO.setmode(GPIO.BOARD)
-    GPIO.setup(16, GPIO.IN, pull_up_down=GPIO.PUD_UP)
-    print("Printing a 1 if garage is closed and a 0 if open")
-    while True:
-        print(GPIO.input(16))
+    my_door = door.door(16)
+    loop = True
+    while loop:
+        door_state_changed, state_in_words = my_door.has_state_changed()
+        if door_state_changed:
+            print(f"Garage door is now {state_in_words}.")
+        #loop = False
 
 
 if __name__ == "__main__":

raspigaragealert/garage_door.py

@@ -1,11 +1,28 @@
 """Class representing a Garage Door alarm."""
 
+import RPi.GPIO as GPIO
+
 
 class door():
     def __init__(self, pin: int):
-        self.state = "closed"
+        GPIO.setmode(GPIO.BOARD)
+        GPIO.setup(pin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
+        self.state: int = 1
         self.pin = pin
+        self.state_definition = {1:"closed", 0:"open"}
+
+
+    def _check_pin(self):
+        current_state = GPIO.input(self.pin)
+        return current_state
 
 
-    def has_state_changed() -> bool:
-        return True
+    def has_state_changed(self) -> tuple:
+        current_state = self._check_pin()
+        #print(f"For debugging: \nCurrent state: {current_state}. \nself.state: {self.state}")
+        if current_state != self.state:
+            self.state = current_state
+            state_in_words = self.state_definition[self.state]
+            return True, state_in_words
+        else:
+            return False, "unchanged"