sms-receiver/frontend/frontend.py

import sqlite3, time, uuid, json
from flask import Flask, request, render_template, jsonify
conn = sqlite3.connect('texts.db', check_same_thread=False)
conn.row_factory = sqlite3.Row

def load_config():
    with open('config/api.json') as config:
        api = json.load(config)

    config = {
        "api": api
    }
    return config

config = load_config()

app = Flask(__name__)

@app.route('/',  methods=['GET'])
def index():
    numbers = conn.execute('SELECT (SELECT body FROM public_messages WHERE `to` = msisdn ORDER BY timestamp), (SELECT `from` FROM public_messages WHERE `to` = msisdn ORDER BY timestamp), * FROM public_numbers;').fetchall()
    return render_template('index.html', numbers=numbers)

@app.route('/public/<uid>',  methods=['GET'])
def show_public(uid):
    num = conn.execute("SELECT msisdn, country FROM public_numbers WHERE uid = ?;", [uid]).fetchone()
    if num is None:
        return 'Not found', 404
    messages = conn.execute("SELECT * FROM public_messages WHERE `to` = ?;", [num['msisdn']]).fetchall()
    return render_template('messages.html', num=num, messages=messages);

@app.route('/api/receive',  methods=['PUT'])
def receive():
    message = request.get_json()

    if 'key' not in message or message['key'] != config["api"]["key"]:
        return 'Forbidden', 403
    
    numbers = list()
    for n in conn.execute('SELECT msisdn FROM public_numbers;').fetchall():
        numbers.append(n[0])

    if message['msisdn'] not in numbers:
        conn.execute('INSERT INTO public_numbers (uid, msisdn, country) VALUES (?, ?, ?);', (str(uuid.uuid4()), message['msisdn'], 'it'))
        conn.commit()

    try:
        conn.execute('INSERT INTO public_messages (uid, `to`, `from`, body, `timestamp`) VALUES (?, ?, ?, ?, ?);', [str(uuid.uuid4()), message['msisdn'], message['from'], message['text'], int(time.time())])
        conn.commit()

    return jsonify('Ok'), 200

if __name__ == "__main__":
    app.run()