// ==UserScript==
// @name         黑龙江大学自动评教
// @namespace    https://github.com/auto-fuck
// @version      1.2
// @description  自动完成黑龙江大学教育质量监控系统的学生评教问卷
// @author       auto
// @match        https://zlpj.hlju.edu.cn/*
// @grant        none
// @run-at       document-idle
// ==/UserScript==

(function () {
  'use strict';

  const CONFIG = {
    fillDelay: 800,
    submitDelay: 1000,
    pollInterval: 1500,
    defaultText: '很好',
    mode: 'manual', // 'manual'(填完暂停等用户核验提交) | 'auto'(全自动)
  };

  const STATE = {
    running: false,
    totalCount: 0,
    doneCount: 0,
    loopActive: false, // 防止 processListLoop 重入
  };

  const LOG = '[自动评教]';
  function log(...a) { console.log(LOG, ...a); }

  function toast(msg, dur = 2000) {
    const el = document.createElement('div');
    el.textContent = msg;
    el.style.cssText =
      'position:fixed;top:20px;left:50%;transform:translateX(-50%);background:rgba(0,0,0,0.8);color:#fff;padding:10px 20px;border-radius:5px;z-index:2147483647;font-size:14px;white-space:nowrap;';
    document.body.appendChild(el);
    setTimeout(() => el.remove(), dur);
  }

  function delay(ms) { return new Promise(r => setTimeout(r, ms)); }

  function detectPage() {
    const h = window.location.hash;
    if (h.includes('/survery/children/surverySubmit/')) return 'survey';
    if (h.includes('/survery')) return 'list';
    return 'other';
  }

  function isVisible(el) {
    if (!el) return false;
    const s = window.getComputedStyle(el);
    return s.display !== 'none' && s.visibility !== 'hidden' && s.opacity !== '0';
  }

  function triggerVueInput(el) {
    el.dispatchEvent(new Event('input', { bubbles: true }));
    el.dispatchEvent(new Event('change', { bubbles: true }));
  }

  // ==================== 弹窗自动确认 ====================
  function startDialogWatcher() {
    const observer = new MutationObserver(() => {
      if (!STATE.running) return;

      // Vux confirm dialog - 自动点击"确定"
      const confirmBtns = document.querySelectorAll('.weui-dialog__btn_primary');
      for (const btn of confirmBtns) {
        if (isVisible(btn) && btn.textContent.includes('确定')) {
          log('自动确认弹窗');
          btn.click();
        }
      }

      // Vux alert - 自动关闭
      const alertBtns = document.querySelectorAll('.vux-alert .weui-dialog__btn_primary');
      for (const btn of alertBtns) {
        if (isVisible(btn)) {
          log('自动关闭提示弹窗');
          btn.click();
        }
      }

      // sweetalert2
      const swalConfirm = document.querySelector('.swal2-confirm');
      if (swalConfirm && isVisible(swalConfirm)) {
        log('自动确认 swal 弹窗');
        swalConfirm.click();
      }
    });

    observer.observe(document.body, { childList: true, subtree: true });
    return observer;
  }

  // ==================== 列表页：获取第一个待评教条目 ====================
  function getFirstPendingItem() {
    const items = document.querySelectorAll('.survery .item.bottom');
    for (const item of items) {
      // 没有 icon-defen（评分图标）= 未完成
      if (!item.querySelector('.icon-defen')) {
        return item;
      }
    }
    return null;
  }

  function countPendingItems() {
    let count = 0;
    const items = document.querySelectorAll('.survery .item.bottom');
    for (const item of items) {
      if (!item.querySelector('.icon-defen')) count++;
    }
    return count;
  }

  // ==================== 列表页：处理循环 ====================
  async function processListLoop() {
    if (STATE.loopActive) return;
    STATE.loopActive = true;

    try {
      while (STATE.running) {
        await delay(CONFIG.pollInterval);

        if (detectPage() !== 'list') { STATE.loopActive = false; return; }

        const pendingCount = countPendingItems();
        if (pendingCount === 0) {
          log('所有问卷已完成！');
          toast('所有评教问卷已完成！');
          STATE.running = false;
          setStatus('已完成', '#7cba23');
          STATE.loopActive = false;
          return;
        }

        if (STATE.totalCount === 0) {
          STATE.totalCount = pendingCount;
          STATE.doneCount = 0;
          log(`找到 ${pendingCount} 个待完成问卷`);
          toast(`找到 ${pendingCount} 个待完成问卷，开始自动评教...`);
        }

        updateProgress();

        const item = getFirstPendingItem();
        if (!item) continue;

        const titleEl = item.querySelector('.title');
        log(`处理: ${titleEl ? titleEl.textContent.trim() : '未知问卷'}`);

        setStatus('填写中...', '#7cba23');
        item.click();

        // 等待离开列表页
        let retry = 0;
        while (detectPage() === 'list' && retry < 20) {
          await delay(500);
          retry++;
        }

        if (detectPage() === 'survey') {
          await handleSurveyPage();
        }

        // 等待返回列表页（手动模式下由用户控制提交时机）
        if (CONFIG.mode === 'manual') {
          setStatus('等待核验提交...', '#ff9800');
        }
        retry = 0;
        while (STATE.running && retry < 300) { // 5分钟超时
          await delay(1000);
          retry++;
          if (detectPage() === 'list') {
            const first = getFirstPendingItem();
            if (first || countPendingItems() === 0) {
              await delay(1500);
              break;
            }
          }
        }

        setStatus('运行中...', '#7cba23');
        await delay(1500);
      }
    } finally {
      STATE.loopActive = false;
    }
  }

  // ==================== 问卷页 ====================
  async function handleSurveyPage() {
    log('问卷页：等待加载...');
    await delay(CONFIG.fillDelay);

    for (let attempt = 0; attempt < 10; attempt++) {
      if (await tryFillAndSubmit()) break;
      await delay(1000);
    }
  }

  async function tryFillAndSubmit() {
    const filled = await fillAllQuestions();
    if (!filled) return false;

    log('填写完成，准备提交...');

    if (CONFIG.mode === 'manual') {
      toast('填写完成，请核验后手动提交');
      setStatus('等待核验提交...', '#ff9800');
      return true;
    }

    await delay(CONFIG.submitDelay);

    // 查找提交按钮
    const allBtns = document.querySelectorAll('button, a.weui-btn, .x-button, [role="button"], .submitbtn');
    for (const btn of allBtns) {
      if (!isVisible(btn)) continue;
      const txt = (btn.textContent || '').trim();
      if (txt === '提交' || txt === '暂存' || txt === '保存') {
        log('点击提交按钮:', txt);
        btn.click();
        STATE.doneCount++;
        updateProgress();
        return true;
      }
    }

    log('未找到提交按钮');
    return false;
  }

  async function fillAllQuestions() {
    try {
      fillRadios();
      fillSelects();
      fillTextFields();
      fillSortInputs();
      fillCheckboxes();
      await delay(200);
      return true;
    } catch (e) {
      log('填写出错:', e);
      return false;
    }
  }

  // 选项顺序：第一个=最优(5分/是)，最后=最差(1分/否)
  function pickOptionIndex(count) {
    if (count === 2) return 0;           // 二选项：选"是"（第一个）
    if (count === 5) return Math.random() < 0.5 ? 0 : 1; // 五选项：index 0=5分 或 index 1=4分
    return 0;                             // 其他：选最优（第一个）
  }

  function fillRadios() {
    const groups = new Map();
    const radios = document.querySelectorAll('input[type="radio"]');
    for (const r of radios) {
      const name = r.getAttribute('name');
      if (!name) continue;
      if (!groups.has(name)) groups.set(name, []);
      groups.get(name).push(r);
    }

    for (const [, group] of groups) {
      if (group.some(r => r.checked)) continue;
      const idx = pickOptionIndex(group.length);
      group[idx].click();
    }
  }

  function fillSelects() {
    const selects = document.querySelectorAll('select');
    for (const sel of selects) {
      const count = sel.options.length;
      if (count > 1) {
        sel.selectedIndex = pickOptionIndex(count);
        triggerVueInput(sel);
      }
    }
  }

  function fillTextFields() {
    const inputs = document.querySelectorAll(
      'input:not([type="radio"]):not([type="checkbox"]):not([type="hidden"]):not([type="submit"]):not([type="button"])'
    );
    for (const inp of inputs) {
      if (inp.readOnly) continue;
      if (inp.classList.contains('matrix_sort') || inp.classList.contains('sortnum')) continue;
      if (!inp.value || inp.value.trim() === '') {
        inp.value = CONFIG.defaultText;
        triggerVueInput(inp);
      }
    }

    const textareas = document.querySelectorAll('textarea');
    for (const ta of textareas) {
      if (!ta.value || ta.value.trim() === '') {
        ta.value = CONFIG.defaultText;
        triggerVueInput(ta);
      }
    }
  }

  function fillSortInputs() {
    const sortInputs = document.querySelectorAll('.matrix_sort, .sortnum');
    for (let i = 0; i < sortInputs.length; i++) {
      if (!sortInputs[i].value || sortInputs[i].value === '') {
        sortInputs[i].value = String(i + 1);
        sortInputs[i].classList.add('sortnum-sel');
        triggerVueInput(sortInputs[i]);
      }
    }
  }

  function fillCheckboxes() {
    const checkboxes = document.querySelectorAll('input[type="checkbox"]:not(:checked)');
    for (const cb of checkboxes) {
      if ((cb.id || '').startsWith('ae-')) continue;
      cb.click();
    }
  }

  function updateProgress() {
    const el = document.getElementById('ae-progress');
    if (el) {
      el.style.display = 'block';
      el.textContent = `进度：${STATE.doneCount} / ${STATE.totalCount}`;
    }
  }

  // ==================== 控制面板 ====================
  function createPanel() {
    const panel = document.createElement('div');
    panel.id = 'auto-eval-panel';
    panel.innerHTML = `
      <style>
        #auto-eval-panel { position:fixed; top:10px; right:10px; z-index:2147483646;
          background:#fff; border-radius:8px; box-shadow:0 2px 20px rgba(0,0,0,0.2);
          padding:15px; font-size:13px; min-width:200px; user-select:none; }
        #auto-eval-panel .ae-title { display:flex; justify-content:space-between;
          align-items:center; margin-bottom:10px; }
        #auto-eval-panel .ae-title strong { color:#7cba23; }
        #auto-eval-panel .ae-close { cursor:pointer; font-size:18px; color:#999; }
        #auto-eval-panel .ae-status { color:#999; margin-bottom:10px; }
        #auto-eval-panel .ae-btns { display:flex; gap:8px; }
        #auto-eval-panel .ae-btn-start { flex:1; padding:8px; background:#7cba23;
          color:#fff; border:none; border-radius:4px; cursor:pointer; font-size:13px; }
        #auto-eval-panel .ae-btn-stop { padding:8px 12px; background:#f0f0f0;
          color:#666; border:none; border-radius:4px; cursor:pointer; font-size:13px; }
        #auto-eval-panel .ae-options { margin-top:8px; font-size:12px; color:#666; }
        #auto-eval-panel .ae-progress { margin-top:8px; font-size:12px; color:#666; display:none; }
        #auto-eval-panel .ae-tip { margin-top:6px; font-size:11px; color:#bbb; }
      </style>
      <div class="ae-title">
        <strong>自动评教</strong>
        <span class="ae-close" id="ae-close">&times;</span>
      </div>
      <div class="ae-status" id="ae-status">状态：待命中</div>
      <div class="ae-btns">
        <button class="ae-btn-start" id="ae-start">开始自动评教</button>
        <button class="ae-btn-stop" id="ae-stop">停止</button>
      </div>
      <div class="ae-options">
        <label><input type="checkbox" id="ae-auto-submit"> 自动提交</label>
      </div>
      <div class="ae-progress" id="ae-progress"></div>
      <div class="ae-tip">快捷键: Ctrl+Shift+A</div>
    `;
    document.body.appendChild(panel);

    document.getElementById('ae-close').onclick = () => { panel.style.display = 'none'; };
    document.getElementById('ae-start').onclick = start;
    document.getElementById('ae-stop').onclick = stop;
    document.getElementById('ae-auto-submit').onchange = function () {
      CONFIG.mode = this.checked ? 'auto' : 'manual';
    };
  }

  function setStatus(msg, color = '#999') {
    const el = document.getElementById('ae-status');
    if (el) { el.textContent = '状态：' + msg; el.style.color = color; }
  }

  async function start() {
    if (STATE.running) { toast('已在运行中...'); return; }
    STATE.running = true;
    STATE.totalCount = 0;
    STATE.doneCount = 0;
    setStatus('运行中...', '#7cba23');

    const page = detectPage();
    log('开始，当前页面:', page);

    try {
      if (page === 'list') {
        await processListLoop();
      } else if (page === 'survey') {
        await handleSurveyPage();
        // 等返回列表后继续
        await waitForListPage();
        if (STATE.running) await processListLoop();
      } else {
        toast('请先进入评教列表页面');
        STATE.running = false;
        setStatus('待命中');
      }
    } catch (e) {
      log('出错:', e);
      toast('出错: ' + e.message);
      STATE.running = false;
      setStatus('出错', 'red');
    }

    if (!STATE.running) setStatus('待命中');
  }

  async function waitForListPage() {
    for (let i = 0; i < 90; i++) {
      if (detectPage() === 'list') {
        await delay(2000);
        return;
      }
      await delay(1000);
    }
  }

  function stop() {
    STATE.running = false;
    setStatus('已停止');
    toast('已停止');
  }

  // ==================== 初始化 ====================
  function init() {
    log('脚本已加载, 当前页面:', detectPage());
    createPanel();

    // hashchange 监听：自动跳回列表时继续处理
    let lastHash = window.location.hash;
    window.addEventListener('hashchange', () => {
      const h = window.location.hash;
      if (h === lastHash) return;
      lastHash = h;
      if (!STATE.running) return;

      const page = detectPage();
      log('路由变化 ->', page);
      if (page === 'survey') {
        handleSurveyPage();
      } else if (page === 'list') {
        updateProgress();
        setStatus('运行中...', '#7cba23');
        setTimeout(() => { if (STATE.running) processListLoop(); }, 1500);
      }
    });

    startDialogWatcher();

    document.addEventListener('keydown', e => {
      if (e.ctrlKey && e.shiftKey && e.key === 'A') {
        e.preventDefault();
        STATE.running ? stop() : start();
      }
    });

    toast('自动评教脚本已就绪 | Ctrl+Shift+A');
  }

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