// ==UserScript==
// @name         嘉兴继续教育自动刷课 (zy.jxkp.net)
// @namespace    https://zy.jxkp.net/
// @version      1.1.1
// @description  嘉兴继续教育：手动进入课程播放页后点击"开始刷课"，自动顺序刷当前课程视频（1倍速）。
// @match        https://zy.jxkp.net/*
// @run-at       document-end
// @grant        GM_xmlhttpRequest
// @connect      wachtapi.rqzb.top
// @antifeature  membership
// @noframes
// @license      All Rights Reserved
// ==/UserScript==

(function () {
  'use strict';

  const CFG = {
    endedWait: 5000,
    tick: 5000,
    stuckTimeout: 300000,
    maxChapters: 3,
    backendUrl: 'https://wachtapi.rqzb.top/yh',
  };
  const RUN_KEY = 'se_jxkp_brush_run';

  const GROUP_NUMBER = '1063839163';
  const PUBLIC_ACCOUNT = '陈风的思考日志';
  const QR_FOLLOW_URL = 'http://weixin.qq.com/r/mp/9yC1rbHEbuwRrfXO93Xl';
  const VERIFY_STORAGE_KEY = 'se_jxkp_verified';

  let running = false;
  let status = '等待';
  let currentChapter = '';
  let lastTime = -1;
  let stuckSince = 0;
  let endedHandled = false;
  let boundVideo = null;
  let tickTimer = null;
  let lastEndedAt = 0;
  let completedChapters = 0;
  let limitHit = 0;
  let rejectCount = 0;
  let rejectWindowStart = 0;

  const $ = (sel, root) => (root || document).querySelector(sel);
  const $$ = (sel, root) => Array.from((root || document).querySelectorAll(sel));
  const sleep = (ms) => new Promise(r => setTimeout(r, ms));

  function apiRequest(method, path, body) {
    return new Promise((resolve, reject) => {
      const opts = {
        method: method,
        url: CFG.backendUrl + path,
        headers: { 'Content-Type': 'application/json' },
        timeout: 15000,
        onload: (resp) => {
          try {
            if (!resp.responseText || resp.responseText.trim() === '') {
              reject(new Error('后端返回空响应(HTTP ' + resp.status + ')'));
              return;
            }
            const data = JSON.parse(resp.responseText);
            if (data.success) { resolve(data.data); }
            else { reject(new Error(data.error || 'API返回失败')); }
          } catch (e) {
            reject(new Error('响应解析失败(HTTP ' + resp.status + '): ' + e.message));
          }
        },
        onerror: (err) => reject(new Error('网络请求失败: ' + (err.error || 'unknown'))),
        ontimeout: () => reject(new Error('请求超时')),
      };
      if (body) { opts.data = JSON.stringify(body); }
      try {
        GM_xmlhttpRequest(opts);
      } catch (e) {
        const fetchOpts = { method: method, headers: { 'Content-Type': 'application/json' } };
        if (body) { fetchOpts.body = JSON.stringify(body); }
        fetch(CFG.backendUrl + path, fetchOpts)
          .then(r => r.json())
          .then(data => { if (data.success) resolve(data.data); else reject(new Error(data.error || 'API返回失败')); })
          .catch(e => reject(new Error('fetch回退也失败: ' + e.message)));
      }
    });
  }

  async function waitUntil(condFn, timeout, interval) {
    const start = Date.now();
    while (Date.now() - start < (timeout || 8000)) {
      try { if (condFn()) return true; } catch (e) {}
      await sleep(interval || 500);
    }
    return false;
  }

  function isLoginModal(m) {
    return /已在另一个浏览器|未登录/.test(m.textContent);
  }

  function closeCompletionModals() {
    let closed = 0;
    $$('.custom-modal').forEach(m => {
      if (isLoginModal(m)) return;
      const btn = m.querySelector('.custom-btn-primary') || m.querySelector('.custom-modal-close');
      if (btn) { btn.click(); closed++; }
      else m.remove();
    });
    return closed;
  }

  function nextLearningChapter() {
    const items = $$('.chapter-item.learning');
    return items.find(el => !el.classList.contains('active')) || null;
  }

  function setStatus(t) {
    status = t;
    const el = $('#jxkp-status');
    if (el) el.textContent = t;
    const pr = $('#jxkp-progress');
    if (pr) pr.textContent = t;
    const ms = $('#jxkp-mini-s');
    if (ms) ms.innerHTML = '状态: <span style="color:#8BC34A;">' + t + '</span>';
    const mp = $('#jxkp-mini-p');
    if (mp) mp.textContent = t;
  }

  function getVideo() { return $('#mse video') || $('video'); }
  function getCourseId() { return new URLSearchParams(location.search).get('column1') || ''; }

  async function apiPost(path, params) {
    const res = await fetch('/073/' + path, {
      method: 'POST',
      credentials: 'include',
      headers: { 'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8' },
      body: new URLSearchParams(params || {}).toString(),
    });
    return res.json();
  }

  async function getEnrolledId(courseId) {
    const d = await apiPost('outService/table2Action!getTable2ByColumn2Column6.action', { column6: courseId });
    return (d && d.column1) || null;
  }

  async function getChapterRows(enrolledId) {
    const d = await apiPost('outService/table16Action!findTable16ListByColumn3.action', { column3: enrolledId });
    return (d && d.rows) || [];
  }

  async function countCompletedChapters(courseId) {
    const tid = await getEnrolledId(courseId);
    if (!tid) return 0;
    const rows = await getChapterRows(tid);
    return rows.filter(r => String(r.column7) === '1').length;
  }

  async function countTotalChapters(courseId) {
    const tid = await getEnrolledId(courseId);
    if (!tid) return 0;
    const rows = await getChapterRows(tid);
    return rows.length;
  }

  function start() {
    if (running) return;
    if (!isVerified()) {
      createVerifyModal(function () { start(); });
      return;
    }
    running = true;
    endedHandled = false;
    lastTime = -1;
    stuckSince = 0;
    completedChapters = 0;
    limitHit = 0;
    try { sessionStorage.setItem(RUN_KEY, '1'); } catch (e) {}
    if (tickTimer) clearInterval(tickTimer);
    tickTimer = setInterval(tick, CFG.tick);
    tick();
    setTimeout(checkCourseDoneOnLoad, 8000);
  }

  function stop(reason) {
    running = false;
    if (tickTimer) { clearInterval(tickTimer); tickTimer = null; }
    try { sessionStorage.removeItem(RUN_KEY); } catch (e) {}
    const v = getVideo();
    if (v) { try { v.playbackRate = 1; } catch (e) {} }
    setStatus('已停止' + (reason ? '：' + reason : ''));
  }

  async function checkCourseDoneOnLoad() {
    if (!running) return;
    const cid = getCourseId();
    if (!cid) return;
    try {
      const done = await countCompletedChapters(cid);
      const total = await countTotalChapters(cid);
      setStatus('已完成 ' + done + '/' + total + ' 章');
      if (total > 0 && done >= total) {
        stop('课程全部章节已完成');
      }
    } catch (e) {}
  }

  function bindEnded() {
    const v = getVideo();
    if (!v || v === boundVideo) return;
    if (boundVideo) { try { boundVideo.removeEventListener('ended', onEnded); } catch (e) {} }
    boundVideo = v;
    v.addEventListener('ended', onEnded);
    endedHandled = false;
  }

  async function onEnded() {
    if (endedHandled || !running) return;
    endedHandled = true;
    lastEndedAt = Date.now();
    setStatus('章节完成，等待上报...');
    await waitUntil(() => !!$('.custom-modal') || !!nextLearningChapter(), CFG.endedWait, 500);
    if (!running) return;

    completedChapters++;

    if (completedChapters >= CFG.maxChapters) {
      limitHit++;
      if (limitHit >= 2) {
        stop('已达 ' + CFG.maxChapters + ' 章上限，请手动点击系统弹窗后重新点击开始');
        return;
      }
      closeCompletionModals();
      stop('已达 ' + CFG.maxChapters + ' 章上限，请重新点击开始继续');
      return;
    }

    closeCompletionModals();
    await sleep(800);
    if (!running) return;

    const next = nextLearningChapter();
    if (next) {
      next.click();
      return;
    }

    const cid = getCourseId();
    let total = 0;
    try { total = await countTotalChapters(cid); } catch (e) {}
    if (total > 0 && completedChapters >= total) {
      stop('全部章节完成');
    } else {
      location.reload();
    }
  }

  function tick() {
    if (!running) return;

    const loginModal = $$('.custom-modal').find(isLoginModal);
    if (loginModal) {
      stop('检测到账号在其他浏览器登录');
      return;
    }

    const rejected = $$('.custom-modal').some(function (m) {
      return !isLoginModal(m) && /学习进度更新失败|已存在播放视频/.test(m.textContent);
    });
    if (rejected) {
      closeCompletionModals();
      const now = Date.now();
      if (now - rejectWindowStart > 60000) { rejectWindowStart = now; rejectCount = 0; }
      rejectCount++;
      if (rejectCount >= 3) {
        stop('进度更新持续被拒绝');
        return;
      }
      const vv = getVideo();
      if (vv) { try { vv.play(); } catch (e) {} }
    }

    closeCompletionModals();

    const v = getVideo();
    if (!v) { setStatus('等待视频加载...'); return; }

    try {
      if (v.playbackRate !== 1) v.playbackRate = 1;
      if (v.paused && !v.ended) { const p = v.play(); if (p && p.catch) p.catch(() => {}); }
    } catch (e) {}

    bindEnded();

    const active = $('.chapter-item.active .chapter-item-title span');
    if (active) currentChapter = active.textContent.trim();

    if (v.duration > 0 && isFinite(v.duration)) {
      const pct = Math.floor((v.currentTime / v.duration) * 100);
      setStatus(currentChapter + '  ' + pct + '%');
    }

    if (Math.abs(v.currentTime - lastTime) < 0.5) {
      if (stuckSince === 0) stuckSince = Date.now();
      const stuckMs = Date.now() - stuckSince;
      if (stuckMs > CFG.stuckTimeout && !v.ended) {
        location.reload();
        return;
      }
    } else {
      stuckSince = 0;
    }

    if (v.ended && endedHandled && lastEndedAt > 0 && Date.now() - lastEndedAt > 30000) {
      location.reload();
      return;
    }

    lastTime = v.currentTime;
  }

  function isVerified() {
    try {
      const data = JSON.parse(localStorage.getItem(VERIFY_STORAGE_KEY) || '{}');
      if (!data.code) return false;
      return /^[A-Z0-9]{8}$/.test(data.code);
    } catch (e) { return false; }
  }

  function setVerified(code) {
    try { localStorage.setItem(VERIFY_STORAGE_KEY, JSON.stringify({ code: code.toUpperCase() })); } catch (e) {}
  }

  function getQrCodeSrc() {
    return 'https://api.qrserver.com/v1/create-qr-code/?size=180x180&margin=8&data=' + encodeURIComponent(QR_FOLLOW_URL);
  }

  function createVerifyModal(onSuccess) {
    const old = document.getElementById('jxkp-verify-overlay');
    if (old) old.remove();

    const overlay = document.createElement('div');
    overlay.id = 'jxkp-verify-overlay';
    overlay.style.cssText = 'position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.92);z-index:9999999;display:flex;align-items:center;justify-content:center;font-family:"Microsoft YaHei",sans-serif;';
    overlay.innerHTML =
      '<div style="background:linear-gradient(135deg,#1a1a2e,#16213e);border-radius:16px;padding:28px 24px;max-width:400px;width:88%;text-align:center;border:1px solid rgba(76,175,80,0.3);box-shadow:0 20px 60px rgba(76,175,80,0.25);">' +
        '<div style="font-size:20px;font-weight:bold;color:#4CAF50;margin-bottom:6px;">嘉兴继续教育刷课 授权验证</div>' +
        '<div style="font-size:12px;color:#888;margin-bottom:18px;">关注公众号获取推荐码后解锁使用</div>' +
        '<div style="background:#fff;border-radius:12px;padding:10px;display:inline-block;margin-bottom:14px;">' +
          '<img src="' + getQrCodeSrc() + '" width="170" height="170" style="border-radius:8px;display:block;" alt="公众号二维码"/>' +
        '</div>' +
        '<div style="font-size:15px;color:#fff;margin-bottom:4px;">公众号: <span style="color:#FFC107;font-weight:bold;">' + PUBLIC_ACCOUNT + '</span></div>' +
        '<div style="font-size:12px;color:#888;margin-bottom:18px;">扫码关注公众号 &rarr; 回复「推荐码」获取</div>' +
        '<input id="jxkp-verify-input" type="text" placeholder="输入推荐码 (8位)" maxlength="8" style="width:78%;padding:11px 14px;border-radius:8px;border:1px solid rgba(255,255,255,0.15);background:rgba(255,255,255,0.06);color:#fff;font-size:14px;text-align:center;letter-spacing:2px;margin-bottom:10px;outline:none;box-sizing:border-box;"/>' +
        '<br/>' +
        '<button id="jxkp-verify-btn" style="background:linear-gradient(135deg,#4CAF50,#2196F3);color:#fff;border:none;padding:12px 0;border-radius:8px;cursor:pointer;font-size:15px;font-weight:bold;width:78%;margin-bottom:10px;">验证解锁</button>' +
        '<div id="jxkp-verify-error" style="color:#f44336;font-size:12px;min-height:20px;margin-bottom:10px;"></div>' +
        '<div style="border-top:1px solid rgba(255,255,255,0.1);padding-top:12px;margin-top:4px;">' +
          '<div style="font-size:13px;color:#00BCD4;">官方交流群: <span style="color:#fff;font-weight:bold;user-select:all;cursor:pointer;">' + GROUP_NUMBER + '</span></div>' +
          '<div style="font-size:11px;color:#666;margin-top:4px;">遇到问题可加群反馈</div>' +
        '</div>' +
      '</div>';
    document.body.appendChild(overlay);

    const input = document.getElementById('jxkp-verify-input');
    const btn = document.getElementById('jxkp-verify-btn');
    const errEl = document.getElementById('jxkp-verify-error');

    async function doVerify() {
      const code = input.value.trim();
      if (!code) { errEl.textContent = '请输入推荐码'; return; }
      btn.disabled = true;
      btn.textContent = '验证中...';
      errEl.style.color = '';
      errEl.textContent = '';
      try {
        await apiRequest('POST', '/api/verify-code', { code: code });
        setVerified(code);
        errEl.style.color = '#4CAF50';
        errEl.textContent = '验证成功！正在解锁...';
        setTimeout(function () {
          overlay.remove();
          if (typeof onSuccess === 'function') onSuccess();
        }, 800);
      } catch (e) {
        errEl.style.color = '#f44336';
        errEl.textContent = (e && e.message) || '推荐码无效，请关注公众号获取正确推荐码';
        input.style.borderColor = '#f44336';
        setTimeout(function () { input.style.borderColor = 'rgba(255,255,255,0.15)'; }, 1500);
      } finally {
        btn.disabled = false;
        btn.textContent = '验证解锁';
      }
    }

    btn.onclick = doVerify;
    input.onkeydown = function (e) { if (e.key === 'Enter') doVerify(); };
    input.focus();
  }

  function createPanel() {
    if ($('#jxkp-panel')) return;
    const el = document.createElement('div');
    el.id = 'jxkp-panel';
    el.style.cssText = 'position:fixed;top:10px;right:10px;z-index:999999;background:rgba(20,20,30,0.95);color:#fff;padding:0;border-radius:14px;font-family:"Microsoft YaHei",sans-serif;font-size:13px;width:300px;box-shadow:0 8px 32px rgba(0,0,0,0.5);overflow:hidden;border:1px solid rgba(255,255,255,0.1);';
    el.innerHTML =
      '<div id="jxkp-header" style="background:linear-gradient(135deg,#4CAF50,#2196F3);padding:6px 10px;cursor:move;user-select:none;display:flex;align-items:center;justify-content:space-between;">' +
        '<span style="color:#fff;font-weight:bold;font-size:13px;">嘉兴继续教育刷课</span>' +
        '<button id="jxkp-min" title="最小化/展开" style="background:rgba(0,0,0,0.25);color:#fff;border:none;width:24px;height:24px;border-radius:6px;cursor:pointer;font-size:14px;font-weight:bold;line-height:1;padding:0;">—</button>' +
      '</div>' +
      '<div id="jxkp-body" style="padding:10px 12px;">' +
        '<div id="jxkp-status-line" style="margin-bottom:6px;font-size:14px;">状态: <span id="jxkp-status" style="color:#8BC34A;">等待</span></div>' +
        '<div id="jxkp-progress-line" style="margin-bottom:10px;color:#aaa;font-size:12px;">进度: <span id="jxkp-progress">--</span></div>' +
        '<div style="display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-bottom:10px;">' +
          '<button id="jxkp-start" style="background:linear-gradient(135deg,#4CAF50,#00BCD4);color:#fff;border:none;padding:9px;border-radius:8px;cursor:pointer;font-size:13px;font-weight:bold;grid-column:1/3;">开始刷课（每3章节需手动确认）</button>' +
          '<button id="jxkp-stop" style="background:#f44336;color:#fff;border:none;padding:8px;border-radius:8px;cursor:pointer;font-size:12px;font-weight:bold;grid-column:1/3;">停止</button>' +
        '</div>' +
        '<div style="margin-top:8px;font-size:11px;color:#666;border-top:1px solid rgba(255,255,255,0.08);padding-top:6px;">' +
          '<span>每轮最多刷 3 个章节，达到后请手动点击系统弹窗，再点击"开始刷课"继续<br>需关注公众号获取推荐码解锁使用，仅限课程播放页</span>' +
        '</div>' +
      '</div>' +
      '<div id="jxkp-mini" style="display:none;padding:10px 14px;font-size:12px;line-height:1.6;">' +
        '<div id="jxkp-mini-s" style="font-size:13px;margin-bottom:3px;">状态: <span style="color:#8BC34A;">等待</span></div>' +
        '<div id="jxkp-mini-p" style="color:#aaa;font-size:11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;">--</div>' +
      '</div>';

    document.body.appendChild(el);

    $('#jxkp-start').onclick = function () { start(); };
    $('#jxkp-stop').onclick = function () { stop('手动停止'); };

    $('#jxkp-min').onclick = function () {
      const body = $('#jxkp-body');
      const mini = $('#jxkp-mini');
      if (body.style.display === 'none') {
        body.style.display = '';
        mini.style.display = 'none';
        this.textContent = '—';
      } else {
        body.style.display = 'none';
        mini.style.display = '';
        this.textContent = '+';
      }
    };

    const header = $('#jxkp-header');
    let ox = 0, oy = 0, dragging = false;
    header.onmousedown = function (e) {
      if (e.target.tagName === 'BUTTON') return;
      dragging = true;
      ox = e.clientX - el.getBoundingClientRect().left;
      oy = e.clientY - el.getBoundingClientRect().top;
    };
    document.addEventListener('mousemove', function (e) {
      if (!dragging) return;
      el.style.right = 'auto';
      el.style.left = (e.clientX - ox) + 'px';
      el.style.top = (e.clientY - oy) + 'px';
    });
    document.addEventListener('mouseup', function () { dragging = false; });
  }

  function init() {
    const isPlayPage = location.pathname.indexOf('index3') !== -1;
    if (!isPlayPage) return;
    createPanel();

    if (!isVerified()) {
      const b = $('#jxkp-start');
      if (b) { b.disabled = true; b.style.opacity = '0.5'; b.style.cursor = 'not-allowed'; }
      createVerifyModal(function () {
        const b2 = $('#jxkp-start');
        if (b2) { b2.disabled = false; b2.style.opacity = ''; b2.style.cursor = ''; }
        try {
          if (sessionStorage.getItem(RUN_KEY) === '1') {
            start();
          }
        } catch (e) {}
      });
      return;
    }

    try {
      if (sessionStorage.getItem(RUN_KEY) === '1') {
        start();
      }
    } catch (e) {}
  }

  if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', init);
  } else {
    init();
  }
})();