from flask import Flask, render_template, Response
import cv2
import imutils
from imutils.video import VideoStream
from pyzbar import pyzbar
import time

import sys
sys.path.append("..")
from TREx.indication_driver import IndicationDriver

app = Flask(__name__)

vs = VideoStream(src=0).start()
time.sleep(2)
frame = None
indication_driver = IndicationDriver()

def stream(camera_index):
    global frame
    global indication_driver
    while True:
        raw_frame = vs.read()
        stream_frame = imutils.resize(raw_frame, width=400)
        decode_frame = imutils.resize(raw_frame, width=800)
        barcodes = pyzbar.decode(decode_frame)
        for barcode in barcodes:
            (x, y, w, h) = barcode.rect
            cv2.rectangle(decode_frame, (x, y), (x + w, y + h), (0, 0, 255), 2)
            barcode_data = barcode.data.decode("utf-8")
            if barcode_data == "X000UP6UQN":
                print(f"{barcode_data}: CAN")
                indication_driver.indicate("CAN")
            else:
                print(barcode_data)
                indication_driver.clear()
            cv2.putText(decode_frame, barcode_data, (x, y -10), cv2.FONT_HERSHEY_SIMPLEX, 0.5, (0,0,255), 2)
            stream_frame = imutils.resize(decode_frame, width=400)
        ret, jpg = cv2.imencode('.jpg', stream_frame)
        jpg2bytes = jpg.tobytes()
        yield b'--frame\r\nContent-Type: image/jpeg\r\n\r\n' + jpg2bytes + b'\r\n\r\n'

@app.route('/')
def index():
    return render_template('index.html')

@app.route('/stream_feed')
def stream_fedd():
    return Response(stream(0), mimetype='multipart/x-mixed-replace; boundary=frame')

if __name__ == '__main__':
    app.run(debug=False, port=5000, host='0.0.0.0')