const request = require('request');
const TARGET_URL = 'https://api.line.me/v2/bot/message/push'
const MULTI_TARGET_URL = 'https://api.line.me/v2/bot/message/multicast'
const BROAD_TARGET_URL = 'https://api.line.me/v2/bot/message/broadcast'
const TOKEN = 'XOyIf8jsoQKq3b1zqxE4wawAoFU2Hz433AO3w8/ye+i6+2KrXpyfFwY0Dk/xhHQLPgtgPTiEP/m4IRW+SlVhdtzfH6c0Lfdw6nJ95QOugHfNWfviAmn5Uojh8LQJeAy21bvaNMCy11f+qgLSRnXmCgdB04t89/1O/w1cDnyilFU='
const USER_ID = '사Uc4258407a7677769f74ba184ec036651'

var express = require('express');
const request = require('request');
const fs = require('fs');
const path = require('path');
const HTTPS = require('https');
const domain = "2018102191.osschatbot2022.tk"
const sslport = 23023;

// Reply Script

const bodyParser = require('body-parser');
var app = express();
app.use(bodyParser.json());
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);

    request.post(
        {
            url: TARGET_URL,
            headers: {
                'Authorization': `Bearer ${TOKEN}` // 인증정보 : channel token 값을 통해 인증.
            },
            json: {
                "replyToken":eventObj.replyToken, // reply token : 누구한테 보낼 것인지?를 판별하기 위해!
                "messages":[
                    {
                        "type":"text",
                        "text":"Hello, user"
                    },
                    {
                        "type":"text",
                        "text":"May I help you?"
                    }
                ]
            }
        },(error, response, body) => {
            console.log(body)
        });
    

    res.sendStatus(200);
});

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);
  }

// Push Script

function SinglePush()
{
    request.post(
        {
            url: TARGET_URL,
            headers: {
                'Authorization': `Bearer ${TOKEN}`
            },
            json: {
                "to": `${USER_ID}`,
                "messages":[
                    {
                        "type":"text",
                        "text":"Hello, user"
                    },
                    {
                        "type":"text",
                        "text":"May I help you?"
                    }
                ]
            }
        },(error, response, body) => {
            console.log(body)
        });
}

function MultiPush()
{
    request.post(
        {
            url: MULTI_TARGET_URL,
            headers: {
                'Authorization': `Bearer ${TOKEN}`
            },
            json: {
                "to": [`${USER_ID}`],
                "messages":[
                    {
                        "type":"text",
                        "text":"Hello, user"
                    },
                    {
                        "type":"text",
                        "text":"May I help you?"
                    }
                ]
            }
        },(error, response, body) => {
            console.log(body)
        });
}

function BroadCast()
{
    request.post(
        {
            url: BROAD_TARGET_URL,
            headers: {
                'Authorization': `Bearer ${TOKEN}`
            },
            json: {
                "messages":[
                    {
                        "type":"text",
                        "text":"Hello, user"
                    },
                    {
                        "type":"text",
                        "text":"May I help you?"
                    }
                ]
            }
        },(error, response, body) => {
            console.log(body)
        });
}

// Single User
// request.post(
//     {
//         url: TARGET_URL,
//         headers: {
//             'Authorization': `Bearer ${TOKEN}`
//         },
//         json: {
//             "to": `${USER_ID}`,
//             "messages":[
//                 {
//                     "type":"text",
//                     "text":"Hello, user"
//                 },
//                 {
//                     "type":"text",
//                     "text":"May I help you?"
//                 }
//             ]
//         }
//     },(error, response, body) => {
//         console.log(body)
//     });


// Multicast User
// request.post(
//     {
//         url: MULTI_TARGET_URL,
//         headers: {
//             'Authorization': `Bearer ${TOKEN}`
//         },
//         json: {
//             "to": [`${USER_ID}`],
//             "messages":[
//                 {
//                     "type":"text",
//                     "text":"Hello, user"
//                 },
//                 {
//                     "type":"text",
//                     "text":"May I help you?"
//                 }
//             ]
//         }
//     },(error, response, body) => {
//         console.log(body)
//     });


// Broadcast
    // request.post(
    //     {
    //         url: BROAD_TARGET_URL,
    //         headers: {
    //             'Authorization': `Bearer ${TOKEN}`
    //         },
    //         json: {
    //             "messages":[
    //                 {
    //                     "type":"text",
    //                     "text":"Hello, user"
    //                 },
    //                 {
    //                     "type":"text",
    //                     "text":"May I help you?"
    //                 }
    //             ]
    //         }
    //     },(error, response, body) => {
    //         console.log(body)
    //     });