// ==UserScript==
// @name         A岛id过滤(只看po主)
// @namespace   adidfilter
// @version      0.2.4
// @description  在右键菜单中使用该脚本过滤指定的ID,需要跨域权限访问三酱api
// @match        https://adnmb2.com/t/*
// @grant GM_getValue
// @grant GM_setValue
// @grant GM_xmlhttpRequest
// @run-at context-menu
// @require https://cdn.bootcss.com/jquery-scrollTo/2.1.2/jquery.scrollTo.min.js
// @downloadURL none
// ==/UserScript==

(function () {
    var uid = []; //需要过滤的id
    var total = 0; //当前展示的过滤后页面数量
    var endflag; //请求的最大数量
    var runCount = 0; //用来区分首次运行
    var locker = 0; //防止同时请求
    var reply = []; //存放得到的页面数据
    var replyPtr; //用来防止重复过滤
    var filtered = []; //存放过滤后的回复
    var gtot = 0; //当前已获得的页面计数
    //页面信息
    var url = document.URL.split('/')[4];
    var thread = url.substring(0, url.indexOf('?'));
    thread = thread ? thread : url;
    var page = url.substring(url.indexOf('=') + 1);
    page = url.indexOf('r=') != -1 ? 1 : parseInt(page);
    gtot = page = page != thread && page != 1 ? (page - 1) : 0;
    var pageCount; //总页面数量
    var pageCur; //已经向服务器请求过的页面数量
    var p = jQuery('.h-threads-item-reply');
    p[0].setAttribute('id', 'top');
    var defaultUid = jQuery('.h-threads-info-uid')[0].innerText.substring(3);
    //ui
    var imgbox = document.createElement('div');
    imgbox.setAttribute('class', 'h-threads-img-box');
    imgbox.innerHTML = `<div class="h-threads-img-tool uk-animation-slide-top">
    <span class="h-threads-img-tool-btn h-threads-img-tool-small uk-button-link"><i class="uk-icon-minus"></i>收起</span>
    <a href="" target="_blank" class="h-threads-img-tool-btn uk-button-link"><i class="uk-icon-search-plus"></i>查看大图</a>
    <span class="h-threads-img-tool-btn h-threads-img-tool-left uk-button-link"><i class="uk-icon-reply"></i>向左旋转</span>
    <span class="h-threads-img-tool-btn h-threads-img-tool-right uk-button-link"><i class="uk-icon-share"></i>向右旋转</span>
    </div>
    <a href="" rel="_blank" target="_blank" class="h-threads-img-a" style="height: 0px;"><img data-src="" src="" align="left" border="0" hspace="20" class="h-threads-img" style="top: 0px; left: 0px;"></a>`;
    var adiv = document.createElement('div');
    adiv.setAttribute('style', 'margin: 5px');
    var select = document.createElement('select');
    select.setAttribute('style', 'width: 4rem; height: 2rem; border: 1px solid rgba(0,0,0,.06);');
    select.setAttribute('id', 'id-filter-select');
    select.onchange = function () {
        render(jQuery('#id-filter-select option:selected').val() - 1);
    };
    var button = document.createElement('button');
    button.setAttribute('style', 'margin-left: 5px; color: #07d; background: #fff; height: 2rem; border: 1px solid rgba(0,0,0,.06);');
    button.innerText = '加载更多';
    button.onclick = function () {
        if (locker + 1 == runCount) {
            locker++;
            loadNewPage(30);
        } else
            alert('请稍等');
    };
    var nextPage = document.createElement('button');
    nextPage.setAttribute('style', 'margin-left: 5px; color: #07d; background: #fff; height: 2rem; border: 1px solid rgba(0,0,0,.06);');
    nextPage.innerText = '下一页';
    nextPage.onclick = function () {
        let c = parseInt(jQuery('#id-filter-select').val());
        if (c != total) {
            jQuery('#id-filter-select').val(c + 1);
            render(c);
            $('html, body').animate({
                scrollTop: $('#top').offset().top
            }, 600);
        }
    };
    adiv.appendChild(select);
    adiv.appendChild(button);
    adiv.appendChild(nextPage);
    var divprg = document.createElement('div');
    divprg.style.top = '3em';
    divprg.style.width = '100%';
    divprg.style.position = 'fixed';
    divprg.style.textAlign = 'center';
    var progress = document.createElement('progress');
    progress.style.width = '20em';
    progress.style.height = '2.5em';
    progress.setAttribute('value', 0);
    progress.setAttribute('max', 30);
    divprg.appendChild(progress);
    document.body.appendChild(divprg);
    //清除原内容
    let i = 0;
    try {
        for (; i < p.length; i++) {
            let img = p[i].getElementsByClassName('h-threads-img-box')[0];
            if (img)
                img.innerHTML = '';
            let po = p[i].getElementsByClassName('uk-text-primary uk-text-small')[0];
            if (po)
                p[i].getElementsByClassName('h-threads-info')[0].removeChild(po);
            p[i].getElementsByClassName('h-threads-content')[0].innerHTML = '';
        }
    } catch (error) {
        alert('过滤出现问题,刷新重试');
        window.history.go(0);
    }
    for (; i < 19; i++) {
        p[p.length - 1].after(p[0].cloneNode(true));
    }
    //首次请求
    GM_xmlhttpRequest({
        method: 'get',
        headers: {
            cookie: document.cookie
        },
        url: 'https://nmb.fastmirror.org/api/thread?id=' + thread + '&page=' + (page + 1),
        onload: function (res) {
            let con = JSON.parse(res.response);
            reply[page] = con;
            pageCount = Math.ceil(con.replyCount / 19);
            progress.setAttribute('max', pageCount > 30 ? 30 : pageCount);
            pageCur = page + 1;
            if (pageCount > 1)
                loadNewPage(30);
            else
                finished();
        }
    });
    //shift:向后读取的页面数量
    function loadNewPage(shift) {
        let i;
        endflag = Math.min(pageCount, pageCur + shift);
        for (i = pageCur; i < endflag; i++)
            fetch(i, i - pageCur);
        pageCur = i;
    }
    //网络请求
    function fetch(i, t) {
        setTimeout(function () {
            GM_xmlhttpRequest({
                method: 'get',
                headers: {
                    cookie: document.cookie
                },
                url: 'https://nmb.fastmirror.org/api/thread?id=' + thread + '&page=' + (i + 1),
                onload: function (res) {
                    let con = JSON.parse(res.response);
                    reply[i] = con;
                    gtot++;
                    if (gtot == endflag - 1) finished();
                    if (!runCount)
                        progress.setAttribute('value', i + 1 - page);
                    else
                        button.innerText = '加载更多 (' + (i + 1) + '/' + endflag + ')';
                }
            });
        }, 70 * t);
    }

    function finished() {
        if (!runCount)
            dialog();
        else {
            button.innerText = '加载更多 (' + endflag + '/' + endflag + ')';
            p = jQuery('.h-threads-item-reply');
            //过滤部分
            let i;
            for (i in reply) {
                if (parseInt(i) <= replyPtr) continue;
                for (let j = 0; j < reply[i].replys.length; j++)
                    for (let k = 0; k < uid.length; k++)
                        if (reply[i].replys[j].userid == uid[k]) {
                            filtered.push(reply[i].replys[j]);
                            break;
                        }
            }
            replyPtr = parseInt(i);
            for (i = total + 1; i <= Math.ceil(filtered.length / 19); i++) {
                let u = document.createElement('option');
                u.innerText = i;
                select.appendChild(u);
            }
            jQuery('#id-filter-select').val(total + 1);
            render(total);
            $('html, body').animate({
                scrollTop: $('#top').offset().top
            }, 600);
            total = i - 1;
        }
        runCount++;
    }

    function dialog() {
        let uidd = prompt("饼干(用分号分隔)", defaultUid);
        if (!uidd) window.history.go(0);
        uid = uidd.split(';');
        document.body.removeChild(divprg);
        p = jQuery('.h-threads-item-reply');
        let i;
        for (i in reply)
            for (let j = 0; j < reply[i].replys.length; j++)
                for (let k = 0; k < uid.length; k++)
                    if (reply[i].replys[j].userid == uid[k]) {
                        filtered.push(reply[i].replys[j]);
                        break;
                    }
        replyPtr = parseInt(i);
        render(0);
        for (i = 0; i < Math.ceil(filtered.length / 19); i++) {
            let u = document.createElement('option');
            u.innerText = i + 1;
            select.appendChild(u);
        }
        total = i;
        jQuery('.uk-container')[0].insertBefore(adiv, jQuery('.uk-pagination.uk-pagination-left.h-pagination')[0]);
    }
    //展示过滤后内容
    function render(index) {
        index = index * 19;
        for (let i = 0; i < 19; i++) {
            let cont = p[i].getElementsByClassName('h-threads-content')[0];
            let info = p[i].getElementsByClassName('h-threads-info')[0];
            let length = filtered.length;
            let imgb = p[i].children[1].getElementsByClassName('h-threads-img-box')[0];
            if (imgb) {
                p[i].children[1].removeChild(imgb);
            }
            if (i + index < length) {
                let f = filtered[i + index];
                info.children[0].innerText = f.title;
                info.children[1].innerText = f.name;
                info.children[2].innerText = f.now;
                info.children[3].innerText = 'ID:' + f.userid;
                info.children[4].children[0].setAttribute('href', '/f/值班室?r=' + f.id);
                info.children[5].setAttribute('href', '/t/' + thread + '?r=' + f.id);
                info.children[5].innerText = 'No.' + f.id;
                cont.innerHTML = f.content;
                if (f.img) {
                    let imgb = imgbox.cloneNode(true);
                    imgb.children[0].children[1].setAttribute('href', 'https://nmbimg.fastmirror.org/image/' + f.img + f.ext);
                    imgb.children[1].setAttribute('href', 'https://nmbimg.fastmirror.org/image/' + f.img + f.ext);
                    imgb.children[1].children[0].setAttribute('data-src', 'https://nmbimg.fastmirror.org/thumb/' + f.img + f.ext);
                    imgb.children[1].children[0].setAttribute('src', 'https://nmbimg.fastmirror.org/thumb/' + f.img + f.ext);
                    p[i].children[1].insertBefore(imgb, info);
                }
            } else {
                let f = {
                    content: '',
                    id: '',
                    img: '',
                    name: '无内容-点击底部按钮加载更多',
                    now: '',
                    title: '无标题',
                    userid: ''
                };
                filtered.push(f);
                cont.innerHTML = f.content;
                info.children[0].innerText = f.title;
                info.children[1].innerText = f.name;
                info.children[2].innerText = f.now;
                info.children[3].innerText = f.userid;
                info.children[5].innerText = 'No.' + f.id;
            }
        }
        //三酱的api
        initImageBox();
        initContent();
    }
})();

//感谢阅读 欢迎改进( ´∀`)