app.py

import serial
import threading
import datetime
from flask import Flask, render_template, jsonify
import os

app = Flask(__name__)

students = [
    {"number": "30214", "name": "오진규", "time": ""},
    {"number": "30605", "name": "김태민", "time": ""},
    {"number": "30729", "name": "하준영", "time": ""},
    {"number": "31405", "name": "김서영", "time": ""},
    {"number": "30216", "name": "이건영", "time": ""},
    {"number": "31110", "name": "박준호", "time": ""},
    {"number": "30709", "name": "박성현", "time": ""},
    {"number": "31413", "name": "문지훈", "time": ""}
]

@app.route('/attendance')
def get_attendance():
    return jsonify(students)

def serial_listen():
    try:
        ser = serial.Serial('/dev/ttyACM', 9600)
        while True:
            try:
                line = ser.readline().decode().strip()
                print(f"[시리얼 수신] {line}")
                for s in students:
                    if s["number"] == line:
                        s["time"] = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
                        print(f"{s['name']} 출석 완료!")
                        break
            except Exception as e:
                print("시리얼 에러:", e)
    except Exception as e:
        print("시리얼 포트 연결 실패:", e)

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

if __name__ == "__main__":
    # Flask Debug 재실행(자동 리로드) 시 중복 스레드 방지
    if os.environ.get('WERKZEUG_RUN_MAIN') == 'true':
        threading.Thread(target=serial_listen, daemon=True).start()
    app.run(debug=True)