'use strict'
require('./config.js');
global.Request = require('request');

let lastPinTime = 0,firstRepinTime = 0,currentTask = null,articleCount = 0;
let mysqlConfig = {
    pool:{
        name: 'TouTiaoFav',
        maxconn: 5
    },
    db:Config.mysqlConfig
};
let headers = {
    'Host': 'www.toutiao.com','User-Agent':'Paw/3.1 (Macintosh; OS X/10.12.6) GCDHTTPRequest',
    'Cookie':'install_id=20457824635; ttreq=1$76925223765b5c30e70d4d35057e7c8d0f6abce6; alert_coverage=20; qh[360]=1; _ga=GA1.2.1897556923.1505932678; sessionid=6a2793f3363dc9444631d6ea4a909996; sid_guard=6a2793f3363dc9444631d6ea4a909996%7C1514306238%7C2592000%7CThu%2C+25-Jan-2018+16%3A37%3A18+GMT; sid_tt=6a2793f3363dc9444631d6ea4a909996; uid_tt=72dc0018060086d5c191476eaa449db1; login_flag=dfcae148f63adb82f58df7993787ba70; odin_tt=9715d5e76f01d8bfac4f8518405e218913dde1adb7dd677f9ec02c4603d5034af08b0568d8c103c5d264d57e1d62cd08; UM_distinctid=15eebdefca9236-0e5d58bc43fb0e-2834516c-4a640-15eebdefcaa9a2',
    'X-SS-Cookie':'install_id=20457824635; ttreq=1$76925223765b5c30e70d4d35057e7c8d0f6abce6; alert_coverage=20; qh[360]=1; _ga=GA1.2.1897556923.1505932678; sessionid=6a2793f3363dc9444631d6ea4a909996; sid_guard=6a2793f3363dc9444631d6ea4a909996%7C1514306238%7C2592000%7CThu%2C+25-Jan-2018+16%3A37%3A18+GMT; sid_tt=6a2793f3363dc9444631d6ea4a909996; uid_tt=72dc0018060086d5c191476eaa449db1; login_flag=dfcae148f63adb82f58df7993787ba70; odin_tt=9715d5e76f01d8bfac4f8518405e218913dde1adb7dd677f9ec02c4603d5034af08b0568d8c103c5d264d57e1d62cd08; UM_distinctid=15eebdefca9236-0e5d58bc43fb0e-2834516c-4a640-15eebdefcaa9a2'
};

global.MysqlPool  = require(ROOTPATH + '/lib/mysql-pool.js').instance(Config.mysqlConfig);
testMysql();
function testMysql(){
    MysqlPool.getConnection(function(err,con){
        con.query('SELECT VERSION() as version',function(err,result,fields){
            if(err){
                LOGGER.error('Mysql Connect error,please recheck your config');
                LOGGER.error(err);
            }else{
                LOGGER.info('Mysql Connect success');
                LOGGER.info('Mysql Version: ' + result[0]['version'] + ' | User: ' + Config.mysqlConfig.user + ' | Database: ' + Config.mysqlConfig.database);
                global.MysqlDB   = require(ROOTPATH + '/lib/mysqldb.js');
                init();
            }
        });

    });
}

function init(){
    LOGGER.info(`Last Pin Time: ${FinalRepinTime}|${new Date(FinalRepinTime*1000)}`);
    currentTask = new Task();
}

function finish(){
    FinalRepinTime = firstRepinTime;
    FILE.writeFileSync(FinalRepinFile,FinalRepinTime,'UTF-8');
    LOGGER.info('--------------------------------------------------------------');
    LOGGER.info('All fav article download finished!!!');
    LOGGER.info(`Article analysis count [ ${articleCount} ]`);
    LOGGER.info('--------------------------------------------------------------');
    MysqlPool.end();
}

function Task(){
    let artticleList = [];
    let current = -1;
    let hasMore = false;

    getList();
    function getList(){
        let url = Config.listUrl;
        let args = [];
        args.push('page_type=2');
        args.push(`user_id=${Config.uid}`);
        args.push('max_behot_time=0');
        args.push('count=20');
        if(lastPinTime>0) args.push(`max_repin_time=${lastPinTime}`);
        url += args.join('&');
        Request({url:url,encoding: 'utf-8',json:true,headers:headers},function(err,response,body){
            if(err){
                LOGGER.error(`List get error,max repin time:${lastPinTime}`);
                LOGGER.error(`URL:${url}`);
                return;
            }
            
            if(lastPinTime==0){
                firstRepinTime = body.data[0].repin_time;
                if(FinalRepinTime==firstRepinTime){
                    finish();
                    return;
                }
            }
            hasMore = body.has_more;
            lastPinTime = body.max_repin_time;
            artticleList = body.data;
            getArticle();
        });    
    }

    function getArticle(){
        current++;
        if(current==artticleList.length){
            return taskFinish();
        }
        let url = Config.articleUrl;
        let article = artticleList[current];
        if(FinalRepinTime == article.repin_time){
            finish();
            return;
        }
        article.content = '';
        url += article.item_id;
        Request({url:url,encoding: 'utf-8',headers:headers},function(err,response,body){
            if(err){
                LOGGER.error(`Article get error,max repin time:${lastPinTime},article id:${article.item_id}`);
                LOGGER.error(`URL:${url}`);
                return;
            }
            let content;
            if(article.has_gallery){
                content = body.match(/gallery: (.*),/);
                if(content && content.length>=2){
                    content = content[1];
                    if(content.match(/JSON\.parse\("(.*)"\)/)){
                        content = eval(content);
                    }else{
                        content = JSON.parse(content).sub_images;
                    }
                    let arr = [];
                    for(let i in content){
                        arr.push(content[i].url);
                    }
                    article.content = arr.join(',');
                }
            }else if(article.has_video){
                content = body.match(/shareUrl: '(.*)'/);
                if(content && content.length>=2) article.content = content[1];
            }else{
                content = body.match(/content: '(.*)'\.replace/);
                if(content && content.length>=2) article.content = (content[1]).replace(/\"/g,'\\"');
            }
            if(article.content==''){
                getArticle();
                return;
            }
            insertArticle(article);
        });
    }
    function insertArticle(article){
        // console.log(article.content);
        let tempArr = [];
        let type = article.has_video?2:article.has_gallery?1:0;
        tempArr.push(`"${article.title.replace(/\"/g,'\\"')}"`);
        tempArr.push(type);
        tempArr.push(`"${article.chinese_tag}"`);
        tempArr.push(`"${article.image_url}"`);
        tempArr.push(`"${article.abstract.replace(/\"/g,'\\"')}"`);
        tempArr.push(article.gallary_image_count);
        tempArr.push(`"${article.display_url}"`);
        tempArr.push(`"${article.item_id}"`);
        let sql = `insert IGNORE into list (title,type,tag,cover,abstract,gallaryCount,source,item_id) values(${tempArr.join(',')})`;
        MysqlDB.query(sql,function(err,result){
            if(err){
                LOGGER.error(`Article insert error,article id:${article.item_id}`);
                LOGGER.error(`SQL:${sql}`);
                return;
            }
            sql = `insert ignore into article (articleID,content) values("${article.item_id}","${article.content}")`
            MysqlDB.query(sql,function(err,result){
                if(err){
                    LOGGER.error(`Article insert error,article id:${article.item_id}`);
                    LOGGER.error(`SQL:${sql}`);
                    return;
                }
                articleCount++;
                getArticle();
            });
        });

    }
    function taskFinish(){
        LOGGER.info('List Finished!');
        if(hasMore){
            LOGGER.info('More List read!!!');
            currentTask = null;
            currentTask = new Task();
        }else{
            finish();
        }
    }
}