var end = false;
var selected_food = '';
var located = '';
var count = 0;
var real_data = '';
var directory = [['CHATBOT/food_division_txt_file/korean_food_final.txt','CHATBOT/food_division_txt_file/chinese_food_final.txt','CHATBOT/food_division_txt_file/japanese_food_final.txt','CHATBOT/food_division_txt_file/western_food_final.txt','CHATBOT/food_division_txt_file/etc_food_final.txt'],['CHATBOT/food_division_txt_file/meat.txt','CHATBOT/food_division_txt_file/fish.txt','CHATBOT/food_division_txt_file/ect.txt','\0','\0'],['CHATBOT/food_division_txt_file/spicy_food_final.txt','CHATBOT/food_division_txt_file/not_spicy_food_final.txt','\0','\0','\0'],['CHATBOT/food_division_txt_file/water.txt','CHATBOT/food_division_txt_file/dry.txt','\0','\0','\0'],['CHATBOT/food_division_txt_file/cold_food_final.txt','CHATBOT/food_division_txt_file/hot_food_final.txt','\0','\0','\0']];
var save_file_name = ['fin_1.txt','fin_2.txt','fin_3.txt','fin.txt'];
var choosen = new Array();
var express = require('express');
const request = require('request');
const TARGET_URL = 'https://api.line.me/v2/bot/message/reply'
const TOKEN = 'TOKEN'
const PAPAGO_URL = 'https://openapi.naver.com/v1/papago/n2mt'
const PAPAGO_ID = 'PAPAGOID'
const PAPAGO_SECRET = 'PAPAGOSECRET'
var fs = require('fs');
const path = require('path');
const HTTPS = require('https');
const domain = "DOMAIN"
const sslport = 23023;
const bodyParser = require('body-parser');
const res = require('express/lib/response');
const { eventNames } = require('process');
const req = require('express/lib/request');
const { getEnabledCategories } = require('trace_events');
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);

    if(eventObj.message.text == 'reset'){
        count=0;
        selected_food = '';
        located = '';
        real_data ='';
    }else if (eventObj.message.text == 'start') {

        count++;
        start_msg(eventObj.replyToken);
    }else if((eventObj.message.text === 'y' || eventObj.message.text == 'n' )&& count ==1)
    {
        if(eventObj.message.text == 'n')
        {
            async function ending () {
                await end_of_chatbot(eventObj.replyToken);
                setTimeout(process.exit(1), 5 * 1000);
            }
            ending();
        }
        count++;
        opt_1(eventObj.replyToken, eventObj.message.text);
    }else if((eventObj.message.text === '1' || eventObj.message.text === '2' || eventObj.message.text === '3' || eventObj.message.text == '4' || eventObj.message.text == '5') && count ==2)
    {
        choosen.push(eventObj.message.text);
        count++;
        opt_2(eventObj.replyToken, eventObj.message.text);
    }else if((eventObj.message.text === '1' || eventObj.message.text === '2' || eventObj.message.text === '3') && count ==3)
    {
        choosen.push(eventObj.message.text);
        count++;
        opt_3(eventObj.replyToken, eventObj.message.text);
    }else if((eventObj.message.text === '1' || eventObj.message.text === '2') && count ==4)
    {
        choosen.push(eventObj.message.text);
        count++;
        opt_4(eventObj.replyToken, eventObj.message.text);
    }else if((eventObj.message.text === '1' || eventObj.message.text === '2') && count ==5)
    {
        choosen.push(eventObj.message.text);
        count++;
        opt_5(eventObj.replyToken, eventObj.message.text);
    }else if((eventObj.message.text === '1' || eventObj.message.text === '2') && count ==6)
    {
        choosen.push(eventObj.message.text);
        count++;
        var txt = intersection();
        Rmx_1(eventObj.replyToken,eventObj.message.text);
    }else if(count == 7 && (eventObj.message.text == 'y' || eventObj.message.text == 'n') && end)
    {
        if(eventObj.message.text == 'n')
        {
            async function ending () {
                await end_of_chatbot(eventObj.replyToken);
                setTimeout(process.exit(1), 5 * 1000);
            }
            ending();
        }
        async function read () {
            await fs.readFile('fin.txt', 'utf8', async function (err,data) {
                var ary = data.toString().split("\n");
                for(i in ary)
                {
                    real_data = await real_data + ary[i] + ' ';
                    console.log(ary[i]);
                    sleep(500);
                }
            });
        }

        read();
        Rmx_comment(eventObj.replyToken)

        count++;
    }else if(count ==8 && end)
    {
        if(real_data == ' ')
        {
            no(eventObj.replyToken);
        }else{
            Rmx(eventObj.replyToken, real_data);   
        }

        count++;
    }else if(count == 9 && end)
    {
        selected_food = eventObj.message.text;
        if(real_data.indexOf(selected_food) != -1)
        {
            loc(eventObj.replyToken);
            count++;
        }else{
            err(eventObj.replyToken);
        }
        
    }else if(count == 10 && end)
    {
        located = eventObj.message.text;
        load_map(eventObj.replyToken);
        cout++;
    }else if(count == 11 && end)
    {   
        async function ending () {
            await end_of_chatbot(eventObj.replyToken);
            setTimeout(process.exit(1), 5 * 1000);
        }
        ending();
    }
    else
    {
        err(eventObj.replyToken);
    }


    res.sendStatus(200);
});

async function start_msg(replyToken)
{
    await request.post(
        {
            url: TARGET_URL,
            headers: {
                'Authorization': `Bearer ${TOKEN}`
            },
            json: {
                "replyToken": replyToken,
                "messages": [
                    {
                        "type": "text",
                        "text": "안녕하세요 메뉴 추천 챗봇입니다! 안내에 따라 주시면 제가 메뉴를 추천해 드리겠습니다.\n진행하시겠습니까? (y/n)\n(reset를 입력하면 초기화됩니다.)"

                    }
                ]
            }
        }, (error, response, body) => {
            console.log(body)
        });
}

async function opt_1(replyToken, message) {
    await request.post(
        {
            url: PAPAGO_URL,
            headers: {
                'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
                'X-Naver-Client-Id': `${PAPAGO_ID}`,
                'X-Naver-Client-Secret': `${PAPAGO_SECRET}`
            },
            body: 'source=en&target=ko&text=' + "1.한식 2.중식 3.일식 4.양식 5.기타",
            json: true
        }, (error, response, body) => {
            if (!error && response.statusCode == 200) {
                console.log(body.message);
                var transMessage = body.message.result.translatedText;
                request.post(
                    {
                        url: TARGET_URL,
                        headers: {
                            'Authorization': `Bearer ${TOKEN}`
                        },
                        json: {
                            "replyToken": replyToken,
                            "messages": [
                                {
                                    "type": "text",
                                    "text": transMessage
                                }
                            ]
                        }
                    }, (error, response, body) => {
                        console.log(body)
                    });
            }
        });
}

async function opt_2(replyToken, message) {
    await request.post(
        {
            url: PAPAGO_URL,
            headers: {
                'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
                'X-Naver-Client-Id': `${PAPAGO_ID}`,
                'X-Naver-Client-Secret': `${PAPAGO_SECRET}`
            },
            body: 'source=en&target=ko&text=' + "1.고기 2.해산물 3.기타",
            json: true
        }, (error, response, body) => {
            if (!error && response.statusCode == 200) {
                console.log(body.message);
                var transMessage = body.message.result.translatedText;
                request.post(
                    {
                        url: TARGET_URL,
                        headers: {
                            'Authorization': `Bearer ${TOKEN}`
                        },
                        json: {
                            "replyToken": replyToken,
                            "messages": [
                                {
                                    "type": "text",
                                    "text": transMessage
                                }
                            ]
                        }
                    }, (error, response, body) => {
                        console.log(body)
                    });
            }
        });
}

async function opt_3(replyToken, message) {
    await request.post(
        {
            url: PAPAGO_URL,
            headers: {
                'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
                'X-Naver-Client-Id': `${PAPAGO_ID}`,
                'X-Naver-Client-Secret': `${PAPAGO_SECRET}`
            },
            body: 'source=en&target=ko&text=' + "1.매운 음식 2.안 매운 음식",
            json: true
        }, (error, response, body) => {
            if (!error && response.statusCode == 200) {
                console.log(body.message);
                var transMessage = body.message.result.translatedText;
                request.post(
                    {
                        url: TARGET_URL,
                        headers: {
                            'Authorization': `Bearer ${TOKEN}`
                        },
                        json: {
                            "replyToken": replyToken,
                            "messages": [
                                {
                                    "type": "text",
                                    "text": transMessage
                                }
                            ]
                        }
                    }, (error, response, body) => {
                        console.log(body)
                    });
            }
        });
}

async function opt_4(replyToken, message) {
    await request.post(
        {
            url: PAPAGO_URL,
            headers: {
                'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
                'X-Naver-Client-Id': `${PAPAGO_ID}`,
                'X-Naver-Client-Secret': `${PAPAGO_SECRET}`
            },
            body: 'source=en&target=ko&text=' + "1.국물이 있는 음식 2.국물이 없는 음식",
            json: true
        }, (error, response, body) => {
            if (!error && response.statusCode == 200) {
                console.log(body.message);
                var transMessage = body.message.result.translatedText;
                request.post(
                    {
                        url: TARGET_URL,
                        headers: {
                            'Authorization': `Bearer ${TOKEN}`
                        },
                        json: {
                            "replyToken": replyToken,
                            "messages": [
                                {
                                    "type": "text",
                                    "text": transMessage
                                }
                            ]
                        }
                    }, (error, response, body) => {
                        console.log(body)
                    });
            }
        });
}

async function opt_5(replyToken, message) {
    await request.post(
        {
            url: PAPAGO_URL,
            headers: {
                'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
                'X-Naver-Client-Id': `${PAPAGO_ID}`,
                'X-Naver-Client-Secret': `${PAPAGO_SECRET}`
            },
            body: 'source=en&target=ko&text=' + "1.차가운 음식 2.뜨거운 음식",
            json: true
        }, (error, response, body) => {
            if (!error && response.statusCode == 200) {
                console.log(body.message);
                var transMessage = body.message.result.translatedText;
                request.post(
                    {
                        url: TARGET_URL,
                        headers: {
                            'Authorization': `Bearer ${TOKEN}`
                        },
                        json: {
                            "replyToken": replyToken,
                            "messages": [
                                {
                                    "type": "text",
                                    "text": transMessage
                                }
                            ]
                        }
                    }, (error, response, body) => {
                        console.log(body)
                    });
            }
        });
        end= true;
}

async function Rmx_comment(replyToken)
{
    await request.post(
        {
            url: TARGET_URL,
            headers: {
                'Authorization': `Bearer ${TOKEN}`
            },
            json: {
                "replyToken": replyToken,
                "messages": [
                    {
                        "type": "text",
                        "text": "아무 키나 입력해 추천 음식 보기."
                    }
                ]
            }
        }, (error, response, body) => {
            console.log(body)
        });
}

async function Rmx(replyToken,message) {
    await request.post(
        {
            url: PAPAGO_URL,
            headers: {
                'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
                'X-Naver-Client-Id': `${PAPAGO_ID}`,
                'X-Naver-Client-Secret': `${PAPAGO_SECRET}`
            },
            body: 'source=en&target=ko&text=' + "추천 음식은 " + message + "입니다. 음식을 고르시오.",
            json: true
        }, (error, response, body) => {
            if (!error && response.statusCode == 200) {
                console.log(body.message);
                var transMessage = body.message.result.translatedText;
                request.post(
                    {
                        url: TARGET_URL,
                        headers: {
                            'Authorization': `Bearer ${TOKEN}`
                        },
                        json: {
                            "replyToken": replyToken,
                            "messages": [
                                {
                                    "type": "text",
                                    "text": transMessage
                                }
                            ]
                        }
                    }, (error, response, body) => {
                        console.log(body)
                    });
            }
        });
}

async function Rmx_1(replyToken,message) {
    await request.post(
        {
            url: PAPAGO_URL,
            headers: {
                'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
                'X-Naver-Client-Id': `${PAPAGO_ID}`,
                'X-Naver-Client-Secret': `${PAPAGO_SECRET}`
            },
            body: 'source=en&target=ko&text=' + "추천 음식을 보겠습니까? (y/n)",
            json: true
        }, (error, response, body) => {
            if (!error && response.statusCode == 200) {
                console.log(body.message);
                var transMessage = body.message.result.translatedText;
                request.post(
                    {
                        url: TARGET_URL,
                        headers: {
                            'Authorization': `Bearer ${TOKEN}`
                        },
                        json: {
                            "replyToken": replyToken,
                            "messages": [
                                {
                                    "type": "text",
                                    "text": transMessage
                                }
                            ]
                        }
                    }, (error, response, body) => {
                        console.log(body)
                    });
            }
        });
}

async function load_map(replyToken)
{
    var map_txt = "https://map.naver.com/v5/search/" + located + "%20" + selected_food;
    map_txt = map_txt.replace(/\s/g, "%20");
    await request.post(
        {
            url: TARGET_URL,
            headers: {
                'Authorization': `Bearer ${TOKEN}`
            },
            json: {
                "replyToken": replyToken,
                "messages": [
                    {
                        "type": "text",
                        "text": "지도 : " + map_txt + "\n press any key to stop"
                    }
                ]
            }
        }, (error, response, body) => {
            console.log(body)
        });
}

async function no(replyToken)
{
    await request.post(
        {
            url: TARGET_URL,
            headers: {
                'Authorization': `Bearer ${TOKEN}`
            },
            json: {
                "replyToken": replyToken,
                "messages": [
                    {
                        "type": "text",
                        "text": "추천음식은 없습니다.\n 챗봇을 종료합니다."
                    }
                ]
            }
        }, (error, response, body) => {
            console.log(body)
        });
}

async function loc(replyToken)
{
    await request.post(
        {
            url: TARGET_URL,
            headers: {
                'Authorization': `Bearer ${TOKEN}`
            },
            json: {
                "replyToken": replyToken,
                "messages": [
                    {
                        "type": "text",
                        "text": "현재 위치를 입력하세요."
                    }
                ]
            }
        }, (error, response, body) => {
            console.log(body)
        });
}

async function err(replyToken)
{
    await request.post(
        {
            url: TARGET_URL,
            headers: {
                'Authorization': `Bearer ${TOKEN}`
            },
            json: {
                "replyToken": replyToken,
                "messages": [
                    {
                        "type": "text",
                        "text": "please enter a right thing"
                    }
                ]
            }
        }, (error, response, body) => {
            console.log(body)
        });
}

async function intersection()
{
    const spawn = await require('child_process').spawn;
    for (var i = 0, j = 0; i < 3; i += 2, j++) {
        var result = await spawn('python', ['/home/ec2-user/menu_recommand_webpage/CHATBOT/fileread_practice.py', directory[i][Number(choosen[i]) - 1], directory[i + 1][Number(choosen[i + 1]) - 1], save_file_name[j]]);
        await result.stdout.on('data', function (data) {
            console.log(data.toString());
        });
        await result.stderr.on('data', function (data) {
            console.log(data.toString());
        });
    }
    result = await spawn('python', ['/home/ec2-user/menu_recommand_webpage/CHATBOT/fileread_practice.py', save_file_name[0], save_file_name[1], save_file_name[2]]);
    result.stdout.on('data', function (data) {
        console.log(data.toString());
    });
    await result.stderr.on('data', function (data) {
        console.log(data.toString());
    });
    result = await spawn('python', ['/home/ec2-user/menu_recommand_webpage/CHATBOT/fileread_practice.py', save_file_name[2], directory[4][Number(choosen[4]) - 1], save_file_name[3]]);
    result.stdout.on('data', function (data) {
        console.log(data.toString());
    });
    await result.stderr.on('data', function (data) {
        console.log(data.toString());
    });
    return 'complete';
}

async function end_of_chatbot(replyToken)
{
    await request.post(
        {
            url: TARGET_URL,
            headers: {
                'Authorization': `Bearer ${TOKEN}`
            },
            json: {
                "replyToken": replyToken,
                "messages": [
                    {
                        "type": "text",
                        "text": "챗봇을 종료합니다. 이용해주셔서 감사합니다."
                    }
                ]
            }
        }, (error, response, body) => {
            console.log(body)
        });
}

function sleep(ms) {
    const wakeUpTime = Date.now() + ms;
    while (Date.now() < wakeUpTime) {}
  }

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);
}