// ==UserScript==
// @name         优书网 <=> 知轩藏书
// @namespace    http://tampermonkey.net/
// @description  [知轩藏书/早安电子书]添加优书网评分和直链，优书网书籍详情页添加[知轩藏书/早安电子书]下载链接
// @author       tianxin
// @match        *://zxcs8.com/sort/*
// @match        *://zxcs8.com/post/*
// @match        *://www.zxcs8.com/sort/*
// @match        *://www.zxcs8.com/post/*
// @match        *://www.yousuu.com/book/*
// @match        *://www.zadzs.com/txt/*
// @grant        GM.xmlHttpRequest
// @grant        GM_getValue
// @grant        GM_setValue
// @connect      www.yousuu.com
// @connect      www.zxcs8.com
// @connect      www.zadzs.com
// @version      0.4.2
// @downloadURL none
// ==/UserScript==

// 请求类型 1:获取评分 2:获取下载
const REQUEST_TYPE_SOURCE = 1;
const REQUEST_TYPE_DOWNLOAD = 2;
// 下载链接缓存时间，默认7天
const DOWNLOAD_EXPIRED_TIME = 86400 * 7 * 1000;
// 优书网评分缓存时间，默认两小时
const SEARCH_EXPIRED_TIME = 2 * 3600 * 1000;
// 优书网最大搜索数目，默认5个
const MAX_SEARCH_NUM = 5;

// 简单封装GM_getValue和GM_setValue,支持过期时间
let storage = {
    setValue:function(key,value){
        let data = JSON.stringify({value:value,time:new Date().getTime()});
        return GM_setValue(key, data);
    },
    getValue:function(key,expired){
        let value = GM_getValue(key);
        if(value !== undefined){
            let dataObj = JSON.parse(value);
            if(new Date().getTime() - dataObj.time > expired){
                return undefined;
            }else{
                 console.log(new Date().getTime())
                return dataObj.value;
            }
        }else{
            return undefined;
        }
    },
}
let getResponse = function(url, callback) {
  GM.xmlHttpRequest({
    method: 'GET',
    url: url,
    onload: function(response) {
      if (response.status >= 200 && response.status < 400){
        callback(response.responseText);}
      else{
        console.log(
            'Error getting ' + url + ' (' + this.status + ' ' + this.statusText +
            '): ' + this.responseText);
      }
    },
    onerror: function(response) {
      console.log('Error during GM.xmlHttpRequest to ' + url + ': ' + response.statusText);
    }
  });
}
let getResult = function(options,callback){
    let key = options.url;
    let data = storage.getValue(key,options.type === REQUEST_TYPE_DOWNLOAD ? DOWNLOAD_EXPIRED_TIME : SEARCH_EXPIRED_TIME);
    if(data !== undefined){
        callback(data);
    }else{
        getResponse(key,function(response){
            storage.setValue(key,response);
            callback(response);
        });
    }
}
let sourceConfig = {
    'zxcs8.post':{
        bookName:function(item){
            return document.querySelector('h1').innerText.match('《(.*?)》')[1];
        },
        bookAuthor:function(item){
            return document.querySelector('h1').innerText.split('：').pop();
        },
        maxNum:MAX_SEARCH_NUM,
        rateItem:function(rate,rateNum,bookLink){
            return '<p class="yinyong"><span style="font-size:14px;color:#FF0000;font-weight:bold"><a href = "' + bookLink + '" target="_blank">优书网</a>评分: ' + rate + '</span><p><p class="yinyong"><span style="font-size:14px;color:#FF0000;font-weight:bold">评分人数: ' + rateNum + '</span><p>';
        },
        anchorObj:function(item){
            let obj = document.querySelector('.yinyong');
            return obj === undefined ? document.querySelector('.pagefujian') : obj;
        },
        anchorPos:'beforebegin',
    },
    'zxcs8.sort':{
        bookName:function(item){
            return item.firstElementChild.innerText.match('《(.*?)》')[1];
        },
        bookAuthor:function(item){
            return item.firstElementChild.innerText.split('：').pop();
        },
        maxNum:MAX_SEARCH_NUM,
        rateItem:function(rate,rateNum,bookLink){
            return '<a href= "' + bookLink + '" target = "_blank">&nbsp;&nbsp;&nbsp;评分：' + rate + '&nbsp;&nbsp;&nbsp;人数：' + rateNum + '</a>'
        },
        anchorObj:function(item){
            return item.lastElementChild.querySelector('div');
        },
        anchorPos:'beforebegin',
    },
    'zadzs':{
        bookName:function(item){
            return document.querySelector('h3[title]').title;
        },
        bookAuthor:function(item){
            return document.querySelector('h3[title]>span>a').innerText;
        },
        maxNum:MAX_SEARCH_NUM,
        rateItem:function(rate,rateNum,bookLink){
            return '<tr><td width="42px"><a href="'+ bookLink + '" target = "blank">评分：</a></td><td>' + rate + '</td></tr><tr><td width="42px">人数：</td><td>' + rateNum + '</td></tr>';
        },
        anchorObj:function(item){
            return document.querySelector('.m-bookstatus>table>tbody');
        },
        anchorPos:"afterbegin",
    }
};
let sourceHandle = {
    'zxcs8.post':function(site,callback){
        let option = {site:site,item:''};
        return callback(option,sourceConfig);
    },
    'zxcs8.sort':function(site,callback){
        let bookList = Array.prototype.slice.call(document.querySelectorAll('#plist'));
        bookList.forEach(function(item){
             let option = {site:site,item:item};
             callback(option,sourceConfig);
         });
    },
     'zadzs':function(site,callback){
         let option = {site:site,item:''};
         return callback(option,sourceConfig);
    },
};
let sourceRoute = {
    'www.zxcs8.com':function(){
        let tag = location.pathname.split('/')[1];
        if(['sort','post'].includes(tag)){
            return 'zxcs8.' + tag;
        }
    },
    'zxcs8.com':function(){
        let tag = location.pathname.split('/')[1];
        if(['sort','post'].includes(tag)){
            return 'zxcs8.' + tag;
        }
    },
    'www.zadzs.com':function(){
        return 'zadzs';
    }
};
let downloadConfig = {
    "zxcs8":{
        'siteName':'知轩藏书',
        'searchUrl':function(args){
            return 'http://www.zxcs8.com/index.php?keyword=' + args.bookName;
        },
        'bookList':function(item){
            return Array.prototype.slice.call(item.getElementsByTagName('dl'));
        },
        'bookName':function(item){
            return item.children["0"].innerText.match('《(.*?)》')[1];
        },
        'bookAuthor':function(item){
            return item.children["0"].innerText.split('：').pop();
        },
        'bookLink':function(item){
            return item.children["0"].getElementsByTagName('a')[0].href;
        },
        'downloadLink':function(item){
            return item.querySelector('.down_2>a').href;
        },
    },
    "zadzs":{
        'siteName':'早安电子书',
        'searchUrl':function(args){
            return 'http://www.zadzs.com/plus/search.php?kwtype=0&q=' + args.bookName;
        },
        'bookList':function(item){
            return Array.prototype.slice.call(item.getElementsByClassName('searchItem'));
        },
        'bookName':function(item){
            return item.querySelector('.book>h5>a').innerText;
        },
        'bookAuthor':function(item){
            return item.querySelector('.book>.price').innerText.split('：').pop();
        },
        'bookLink':function(item){
            return 'http://www.zadzs.com' + item.querySelector('.book>.cover').pathname;
        },
        'downloadLink':function(item){
            return 'http://www.zadzs.com' + item.querySelector('.book>cover').href;
        },
    },
};
let downloadHandle = {
    'zxcs8':function(options,callback){
        let siteConfig = downloadConfig[options.site];
        getResult({url:options.bookLink,type:REQUEST_TYPE_DOWNLOAD},function(response){
            let html = document.createElement( 'html' );
            html.innerHTML = response;
            let downloadLink = siteConfig.downloadLink(html);
            callback({downloadLink:downloadLink,siteName:siteConfig.siteName})
        });
    },
    'zadzs':function(options,callback){
        let args = {downloadLink:options.bookLink,siteName:downloadConfig[options.site].siteName};
        callback(args);
    }
};
let downloadRoute = {
    'www.yousuu.com':function(){
        return 'www.yousuu.com';
    }
};
function removeElement(element){
    if(element){
        let parent = element.parentNode;
        if(parent){
            parent.removeChild(element);
        }
    }
}
function addDownLoadLink(options,config){
    let siteConfig = config[options.site];
    let youBookName = document.getElementsByClassName('col-sm-7')[0].children[0].innerText;
    let youBookAuthor = document.getElementsByClassName('list-unstyled list-sm')["0"].firstChild.children["0"].innerText;
    getResult({url:siteConfig.searchUrl({bookName:youBookName}),type:REQUEST_TYPE_DOWNLOAD},function(response){
        let html = document.createElement( 'html' );
        html.innerHTML = response;
        let bookList = siteConfig.bookList(html)
        if(bookList.length > 0){
             bookList.some(function(item){
                 let bookLink = siteConfig.bookLink(item);
                 let matchBookName = siteConfig.bookName(item);
                 let matchBookAuthor = siteConfig.bookAuthor(item);
                 if(matchBookName === youBookName && matchBookAuthor === youBookAuthor){
                     downloadHandle[options.site]({site:options.site,bookLink:bookLink},insertDownLink);
                 }
             });
        }
    })
};
function insertDownLink(options){
    let obj = document.querySelector('#download-items');
    let item = '<li><a href="'+ options.downloadLink +'" target="_blank">'+ options.siteName + '</a></li>';
    obj.insertAdjacentHTML('beforeend',item);
    if(obj.parentElement.style.display === 'none'){
        obj.parentElement.setAttribute('style', 'display:run-in');
    }
}
function getRate(args,callback)
{
    let bookName = args.bookName;
    let bookAuthor = args.bookAuthor;
    let maxNum = (args.maxNum === undefined) ? 1 : args.maxNum;
    getResult({url:'http://www.yousuu.com/search/' + bookName + bookAuthor + '?type=all',type:REQUEST_TYPE_SOURCE}, function(response){
        let rate = 0;
        let rateNum = 0;
        let bookLink = '';
        let html = document.createElement( 'html' );
        html.innerHTML = response;
        let matchBook = Array.slice(Array.prototype.slice.call(html.getElementsByClassName('col-lg-4 col-md-6 col-xs-12')),0,maxNum);
        matchBook.some(function(item){
            let matchTitle = item.querySelector('.title');
            let matchName = matchTitle.innerText;
            let matchAbstract = item.querySelector('.abstract').innerHTML.split('<br>');
            let matchAuthor = matchAbstract[0].split(':')[1].replace(/<\/?[^>]*>/g,'').trim();
            if(matchAuthor === bookAuthor && matchName === bookName){
                rate = item.querySelector('.num2star').innerHTML;
                rateNum = item.querySelector('.rating').innerText.replace(/[^0-9]/ig,"");
                bookLink = 'http://www.yousuu.com' + matchTitle.querySelector('a').pathname;
                return true;
            }
        });
        callback({rate:rate,rateNum:rateNum,bookLink:bookLink});
    });
}
function insertRate(options,config){
    let siteConfig = config[options.site];
    let args = {bookName:siteConfig.bookName(options.item),bookAuthor:siteConfig.bookAuthor(options.item),maxNum:siteConfig.maxNum};
    getRate(args,function(data){
        let rate = data.rate;
        let rateNum = data.rateNum;
        let bookLink = data.bookLink;
        if(rate !== 0 || rateNum !== 0){
            let rateItem = siteConfig.rateItem(rate,rateNum,bookLink);
            siteConfig.anchorObj(options.item).insertAdjacentHTML(siteConfig.anchorPos,rateItem);
        }
    });
}
(function() {
    'use strict';
    if(Object.keys(sourceRoute).includes(location.hostname)){
        let site = sourceRoute[location.hostname]();
        sourceHandle[site](site,insertRate);
    }
    if(Object.keys(downloadRoute).includes(location.hostname)){
        let sites = Object.keys(downloadConfig);
        let select = '<div class="btn-group" id="download-list" style="display:none"><button type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" class="btn btn-warning dropdown-toggle"><span>去下载</span>&nbsp;<span class="caret"></span></button><ul class="dropdown-menu" id="download-items"></ul></div>';
        let obj = document.getElementsByClassName('sokk-book-button-groups')[0];
        obj.insertAdjacentHTML('beforeend',select);
        sites.forEach(function(item){
            let options = {site:item};
            addDownLoadLink(options,downloadConfig);
        });
    }
})();