main.py

import os
import random
import msg
from flask import Flask, request, abort

from linebot import (
    LineBotApi, WebhookHandler
)
from linebot.exceptions import (
    InvalidSignatureError
)
from linebot.models import (
    MessageEvent, TextMessage, TextSendMessage,
)

app = Flask(__name__)

LINE_CHANNEL_ACCESS_TOKEN = os.environ["KAKURE_ACCESS_TOKEN"]
LINE_CHANNEL_SECRET = os.environ["KAKURE_SECRET"]

line_bot_api = LineBotApi(LINE_CHANNEL_ACCESS_TOKEN)
handler = WebhookHandler(LINE_CHANNEL_SECRET)

@app.route("/", methods=['GET'])
def show():
    return "Connect!"

@app.route("/callback", methods=['POST'])
def callback():
    signature = request.headers['X-Line-Signature']

    body = request.get_data(as_text=True)
    app.logger.info("Request body: " + body)

    try:
        handler.handle(body, signature)
    except InvalidSignatureError:
        abort(400)

    return 'OK'


@handler.add(MessageEvent, message=TextMessage)
def handle_message(event):
    txt = event.message.text
    result = msg.make_results(txt)
    msgs = [TextMessage(text=result)]
    line_bot_api.reply_message(
        reply_token=event.reply_token,
        messages=msgs
    )


if __name__ == "__main__":
    port = int(os.getenv("PORT", 5000))
    app.run(host="0.0.0.0", port=port)