// 背景執行		forever start -a -l line-bot-js.log app.js
// 重新背景執行	forever restart -a -l line-bot-js.log app.js
// 監聽檔案變化	nodemon "npm start"
// Debug		nodemon --inspect=192.168.1.15:9229 app.js

require('dotenv').config()
const dateFormat = require('dateformat');
// 引用linebot SDK
var linebot = require('linebot');
const fs = require('fs');
const express = require('express');
const app = express();

//讀取憑證及金鑰
const prikey = fs.readFileSync('../certificate/RSA-privkey.pem', 'utf8');
const cert = fs.readFileSync('../certificate/RSA-cert.pem', 'utf8');
const cafile = fs.readFileSync('../certificate/RSA-chain.pem', 'utf-8');

//建立憑證及金鑰
const credentials = {
	key: prikey,
	cert: cert,
	ca: cafile
};

// 用於辨識Line Channel的資訊
var bot = linebot({
	channelId: process.env.toJianMiau,
	channelSecret: process.env.channelSecret,
	channelAccessToken: process.env.channelAccessToken
});
var ZhuHanbot = linebot({
	channelId: process.env.toZhuHantoJianMiau,
	channelSecret: process.env.ZhuHanchannelSecret,
	channelAccessToken: process.env.ZhuHanchannelAccessToken
});

const LineNotifyClass = require('./LineNotifyClass')
const MessageClass = require('./MessageClass')
const JoinClass = require('./JoinClass')
const MemberJoinedClass = require('./MemberJoinedClass')
const LineNotify = new LineNotifyClass();
const Message = new MessageClass(bot, ZhuHanbot, LineNotify);
const Join = new JoinClass(bot, LineNotify);
const MemberJoined = new MemberJoinedClass(bot, LineNotify);

// 當有人傳送訊息給Bot時
bot.on('event', function (event) {
	try {
		switch (event.type) {
			case 'message': {
				Message.Message(event);
				break;
			}

			case 'join': {
				Join.Join(event);
				break;
			}

			case 'leave':
			case 'follow':
			case 'unfollow':
			case 'memberJoined': {
				MemberJoined.MemberJoined(event);
				break;
			}

			case 'memberLeave':
			case 'postback':
			case 'accountLink':
			case 'fallback':
			default:
				break;
		}
	} catch (error) {
		console.error(error);
	}
});

// Bot所監聽的webhook路徑與port
const port = process.env.PORT || 3000;
bot.listen('/linewebhook', port, credentials, function () {
	let datetime = dateFormat(new Date(), "yyyy-mm-dd HH:MM:ss");
	console.log(`${datetime} listening on ${port}`);
	console.log(`${datetime} [BOT已準備就緒]`);
});