import RPi.GPIO as GPIO
import time, os, json

# Configuration
AUTH_KEY        = "xxxxxxxxxxxxxxxxxxxxxx-xxxxxxxxxxxxxxxx";
SEND_URL        = "https://gcm-http.googleapis.com/gcm/send";
SENDER_CHANNEL  = "/topics/bewegung";
COOLDOWN        = 10; # Seconds that should be waited between messages
NUM_MODULES     = 2; # amount of used modules (motion detector, magnetic switch, etc.)

MODULES = range(NUM_MODULES);
MODULES[0] = { "name": "Wohnzimmer Bewegungsmelder", "gpio": 23};
MODULES[1] = { "name": "Flur Fenster-Magnetkontakt", "gpio": 24};



# Function
def sentMessage(channel):
    for m in MODULES:
        if channel == m["gpio"]:
            if not ("lastMessageSent" in m) or ("lastMessageSent" in m and m["lastMessageSent"]+COOLDOWN <= time.time()):
                m["lastMessageSent"] = int(time.time());
                obj = { "O": m["name"], 
                        "T": m["lastMessageSent"]};
                message = json.JSONEncoder().encode(obj).replace('"', '\\"');
                os.system('curl --header "Authorization: key="'+AUTH_KEY+' --header Content-Type:"application/json" '+SEND_URL+' -d \'{"to":"'+SENDER_CHANNEL+'", "data": {"message": "'+message+'" }}\'');
                return;

# Setup
GPIO.setmode(GPIO.BCM);
GPIO.setwarnings(False);

for m in MODULES:
    GPIO.setup(m["gpio"], GPIO.IN);
    GPIO.add_event_detect(m["gpio"], GPIO.RISING, callback=sentMessage);

# Infinite Loop
while True:
    pass