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46 lines
1.4 KiB
46 lines
1.4 KiB
import firebase_admin
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from firebase_admin import credentials
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from firebase_admin import firestore
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from PIL import Image
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import time, os
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import camera
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import image_tools
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import config
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config.bootstrap()
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# Use a service account
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cred = credentials.Certificate(os.getenv('FIREBASE_CERT_FILE'))
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firebase_admin.initialize_app(cred)
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db = firestore.client()
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doc_ref_lot1 = db.collection(os.getenv('LOT_NAME'))
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def poll():
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# Take the picture
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img = Image.open(camera.capture(os.getenv('CAMERA_DEVICE'))).load()
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#img = Image.open('./lib/test-images/lot-empty.jpg').load()
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reference = Image.open(os.getenv('REFERENCE_IMAGE')).load()
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stalls = doc_ref_lot1.get()
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for stall in stalls:
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stall_obj = stall.to_dict()
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color_reference = image_tools.average_color(stall_obj['locationX'], stall_obj['locationY'], stall_obj['sideN'], reference)
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color_compare = image_tools.average_color(stall_obj['locationX'], stall_obj['locationY'], stall_obj['sideN'], img)
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stall_occupied = image_tools.threshold(image_tools.differences(color_reference, color_compare), float(os.getenv('E_HAT_TRIGGER_LEVEL')))
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stall_obj['open'] = not stall_occupied
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print(stall.id)
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db.collection(u'Lot1').document(stall.id).set( stall_obj )
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start_time = time.time()
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while True:
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poll()
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poll_time = float(os.getenv('POLL_FREQUENCY'))
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time.sleep(poll_time - ((time.time() - start_time) % poll_time))
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