var express = require('express');
const request = require('request');
const TARGET_URL = 'https://api.line.me/v2/bot/message/reply'
const TOKEN = '라인 토큰'
const fs = require('fs');
const path = require('path');
const HTTPS = require('https');
const domain = "도메인"
const sslport = 23023;
const bodyParser = require('body-parser');
const axios = require('axios')
const cheerio = require('cheerio')
var app = express();
var cron = require('node-cron');
var stock_code = "005930"  // 임시로 지정
app.use(bodyParser.json());

let stockList = [];
fs.readFile('./stock_names.txt', 'utf8', (err,data) => { // 파일 import하고 stockList로 저장
    if (err){
        console.error(err)
        return
    }
    var tempstockList = data.toString().split("\n"); // ex) stockList = [[012312 ~~],[123012 ~~],[192312 ~~],[192310 ~~],[...]]
    // console.log("tempStockList:", tempstockList);
    for (let i=0; i<tempstockList.length; i++){
        stockList[i] = (tempstockList[i].split("\t")); // ex) stockList = [[012312,~~],[1230012,~~],[1923,~~],[192310,~~],[...]]
    }
})

app.post('/hook', function (req, res) {

    var eventObj = req.body.events[0];
    var source = eventObj.source;
    var message = eventObj.message; 
   
    // request log
    console.log('======================', new Date() ,'======================');
    console.log('[request]', req.body);
    console.log('[request source] ', eventObj.source);
    console.log('[request message]', eventObj.message);

    var s_code = get_stock_code(stockList,stock_code,eventObj.replyToken,eventObj.message.text);
    //console.log("s_code:", s_code)
    if (s_code != -1){
        cron.schedule('*/2 * * * *', () => {
            compare(s_code[0], s_code[1],eventObj.replyToken);
        });
    }
 
    res.sendStatus(200);
});

function get_stock_code(stockList,stock_code,replyToken,message){
    var temp = message.toString().split(" ");

    if (temp.length != 2){
        request.post(
            {
                url: TARGET_URL,
                headers: {
                    'Authorization': `Bearer ${TOKEN}`
                },
                json: {
                    "replyToken":replyToken,
                    "messages":[
                        {
                            "type":"text",
                            "text":"Please type in like the following form"
                        },
                        {
                            "type":"text",
                            "text":"(기업명)   (가격)"
                        }
                    ]
                }
            },(error, response, body) => {
                console.log(body)
            });
        return -1;
    }

    else{
        //console.log(temp)
        var wanted_stock_name = temp[0];
        var wanted_stock_price = temp[1];
        var is_in_list = false;         
    
        if (wanted_stock_price < 0){                        // 원하는 가격 입력받음 (0 이상만)
            request.post(
                {
                    url: TARGET_URL,
                    headers: {
                        'Authorization': `Bearer ${TOKEN}`
                    },
                    json: {
                        "replyToken":replyToken,
                        "messages":[
                            {
                                "type":"text",
                                "text":"Price must be positive number"
                            },
                        ]
                    }
                },(error, response, body) => {
                    console.log(body)
                });
            return -1;
        }

        for (let i = 0; i<stockList.length; i++) {
            if (wanted_stock_name == stockList[i][1]){  // 입력한거 나오면 코드로 바꿔줌
                // console.log(123)
                stock_code = stockList[i][0]
                is_in_list = true
                return [stock_code, wanted_stock_price]
            }
        }
        if (is_in_list == false) {                                           // stockList에 없으면 없다고 보냄
            request.post(
                {
                    url: TARGET_URL,
                    headers: {
                        'Authorization': `Bearer ${TOKEN}`
                    },
                    json: {
                        "replyToken":replyToken,
                        "messages":[
                            {
                                "type":"text",
                                "text":"Not in list"
                            },
                        ]
                    }
                },(error, response, body) => {
                    console.log(body)
                });
            return -1;
        }      
    }
}

function compare(s_code, wanted_price,replyToken){
    const temp = axios.get(`https://finance.naver.com/item/main.nhn?code=${s_code}`).then(
            res => {
                // console.log(res.data)
                const $ = cheerio.load(res.data)
                let $bodyList = $("dl.blind").text();
                $bodyList = $bodyList.split('\n')[5];
                $bodyList = $bodyList.slice(14, $bodyList.length);
                $bodyList = $bodyList.split(' ')[0];
                // console.log($bodyList)
                let result = $bodyList                              // 실시간으로 변하는 주식 가격 scrape


                result = result.replace(',', '')
                console.log("current price:",parseInt(result))
                if (parseInt(result) >= wanted_price){
                    request.post(
                        {
                            url: TARGET_URL,
                            headers: {
                                'Authorization': `Bearer ${TOKEN}`
                            },
                            json: {
                                "replyToken":replyToken,
                                "messages":[
                                    {
                                        "type":"text",
                                        "text":"Reached wanted price!"
                                    },
                                ]
                            }
                        },(error, response, body) => {
                            console.log(body)
                        });
                }
            }
        )
    
    // if (parseInt(result) <= wanted_price){
    //     request.post(
    //         {
    //             url: TARGET_URL,
    //             headers: {
    //                 'Authorization': `Bearer ${TOKEN}`
    //             },
    //             json: {
    //                 "replyToken":replyToken,
    //                 "messages":[
    //                     {
    //                         "type":"text",
    //                         "text":"Reached wanted price!"
    //                     },
    //                 ]
    //             }
    //         },(error, response, body) => {
    //             console.log(body)
    //         });
    // }



    
}


try {
    const option = {
      ca: fs.readFileSync('/etc/letsencrypt/live/' + domain +'/fullchain.pem'),
      key: fs.readFileSync(path.resolve(process.cwd(), '/etc/letsencrypt/live/' + domain +'/privkey.pem'), 'utf8').toString(),
      cert: fs.readFileSync(path.resolve(process.cwd(), '/etc/letsencrypt/live/' + domain +'/cert.pem'), 'utf8').toString(),
    };
  
    HTTPS.createServer(option, app).listen(sslport, () => {
      console.log(`[HTTPS] Server is started on port ${sslport}`);
    });
  } catch (error) {
    console.log('[HTTPS] HTTPS 오류가 발생하였습니다. HTTPS 서버는 실행되지 않습니다.');
    console.log(error);
  }