// ==UserScript==
// @name         安徽中职学籍-批量打印学生基本信息表
// @namespace    https://scriptcat.org/
// @version      1.2.2
// @description  在全国中等职业学校学生管理信息系统（安徽）批量打印学生基本信息表
// @author       you
// @match        http://zzxsgl.ahjygl.gov.cn/*
// @match        https://zzxsgl.ahjygl.gov.cn/*
// @match        http://zzxsgl.ahjyt.gov.cn/*
// @match        https://zzxsgl.ahjyt.gov.cn/*
// @grant        GM_addStyle
// @run-at       document-idle
// @run-in       all-frames
// ==/UserScript==

(function () {
  'use strict';

  const PRINT_PATH =
    'zxs/zzZxsJbxxAction!showDetail.action?zzZxsJbxxQB.id={id}&isPrint=0';

  let listDoc = null;
  let listBaseUrl = location.href;

  function isListPageIn(doc) {
    if (!doc || !doc.body) return false;
    const hasNameHeader = [...doc.querySelectorAll('th, td')].some(
      (el) => el.textContent.trim() === '姓名'
    );
    const hasStudentLink = [...doc.querySelectorAll('a')].some((a) =>
      /xsqb\.id=/i.test(a.getAttribute('href') || '')
    );
    return hasNameHeader && hasStudentLink;
  }

  function collectAccessibleDocs() {
    const docs = [];
    const seen = new Set();
    const add = (doc) => {
      if (!doc || seen.has(doc)) return;
      seen.add(doc);
      docs.push(doc);
    };

    add(document);
    try {
      const topDoc = window.top.document;
      add(topDoc);
      for (const frame of topDoc.querySelectorAll('iframe, frame')) {
        try {
          add(frame.contentDocument);
        } catch {
          /* 跨域 iframe 无法访问 */
        }
      }
    } catch {
      /* 无法访问 top */
    }

    for (const frame of document.querySelectorAll('iframe, frame')) {
      try {
        add(frame.contentDocument);
      } catch {
        /* ignore */
      }
    }

    return docs;
  }

  function findListContext() {
    for (const doc of collectAccessibleDocs()) {
      if (isListPageIn(doc)) {
        let baseUrl = location.href;
        try {
          baseUrl = doc.defaultView?.location?.href || baseUrl;
        } catch {
          /* ignore */
        }
        return { doc, baseUrl };
      }
    }
    return null;
  }

  function getPanelRoot() {
    try {
      return window.top.document.body;
    } catch {
      return document.body;
    }
  }

  function getPanelDocument() {
    try {
      return window.top.document;
    } catch {
      return document;
    }
  }

  function injectStyles() {
    const pdoc = getPanelDocument();
    if (pdoc.getElementById('bp-panel-style')) return;
    const style = pdoc.createElement('style');
    style.id = 'bp-panel-style';
    style.textContent = `
      #bp-panel {
        position: fixed; right: 16px; bottom: 16px; z-index: 2147483647;
        width: 340px; background: #fff; border: 1px solid #dcdfe6;
        border-radius: 8px; box-shadow: 0 4px 20px rgba(0,0,0,.15);
        font: 13px/1.5 "Microsoft YaHei", sans-serif; color: #303133;
      }
      #bp-panel .bp-head {
        padding: 10px 12px; background: #409eff; color: #fff;
        border-radius: 8px 8px 0 0; cursor: move; user-select: none;
      }
      #bp-panel .bp-body { padding: 12px; }
      #bp-panel label { display: block; margin-bottom: 8px; }
      #bp-panel input[type="number"] {
        width: 72px; margin-left: 6px; padding: 2px 6px;
        border: 1px solid #dcdfe6; border-radius: 4px;
      }
      #bp-panel .bp-btns { display: flex; gap: 8px; margin-top: 10px; }
      #bp-panel button {
        flex: 1; padding: 8px 0; border: none; border-radius: 4px;
        cursor: pointer; font-size: 13px;
      }
      #bp-panel .bp-start { background: #409eff; color: #fff; }
      #bp-panel .bp-stop { background: #f56c6c; color: #fff; }
      #bp-panel .bp-start:disabled, #bp-panel .bp-stop:disabled { opacity: .55; cursor: not-allowed; }
      #bp-panel .bp-log {
        margin-top: 10px; max-height: 160px; overflow: auto; padding: 8px;
        background: #f5f7fa; border-radius: 4px; font-size: 12px;
        white-space: pre-wrap; word-break: break-all;
      }
      #bp-panel .bp-tip { margin-top: 8px; font-size: 11px; color: #909399; }
    `;
    pdoc.head.appendChild(style);
  }

  const state = { running: false, stopRequested: false };

  function buildPrintUrl(xsqbId) {
    const rel = PRINT_PATH.replace('{id}', xsqbId);
    return new URL(rel, listBaseUrl).href;
  }

  function parseStudentLink(link) {
    const href = link.getAttribute('href') || '';
    const m = href.match(/xsqb\.id=([A-F0-9]+)/i);
    if (!m) return null;
    return { xsqbId: m[1], name: link.textContent.trim() };
  }

  function collectJobs() {
    if (!listDoc) return [];
    const jobs = [];
    const seen = new Set();

    const checkedRows = [...listDoc.querySelectorAll('table tr')].filter((tr) => {
      const cb = tr.querySelector('input[type="checkbox"]');
      return cb && cb.checked && !cb.disabled;
    });

    const rows = checkedRows.length
      ? checkedRows
      : [...listDoc.querySelectorAll('table tbody tr, table tr')];

    for (const row of rows) {
      const link = row.querySelector('a[href*="xsqb.id="]');
      if (!link) continue;

      const info = parseStudentLink(link);
      if (!info || !info.name) continue;
      if (seen.has(info.xsqbId)) continue;

      seen.add(info.xsqbId);
      jobs.push({
        name: info.name,
        xsqbId: info.xsqbId,
        printUrl: buildPrintUrl(info.xsqbId),
      });
    }

    return jobs;
  }

  function log(msg) {
    const box = getPanelDocument().getElementById('bp-log');
    if (!box) return;
    box.textContent += (box.textContent ? '\n' : '') +
      `[${new Date().toLocaleTimeString()}] ${msg}`;
    box.scrollTop = box.scrollHeight;
  }

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

  function printInIframe(url) {
    return new Promise((resolve, reject) => {
      const root = getPanelRoot();
      const iframe = getPanelDocument().createElement('iframe');
      iframe.style.cssText =
        'position:fixed;left:-9999px;top:0;width:900px;height:900px;border:0;';

      let done = false;
      const finish = (err) => {
        if (done) return;
        done = true;
        clearTimeout(timer);
        setTimeout(() => iframe.remove(), 2000);
        err ? reject(err) : resolve();
      };

      const timer = setTimeout(() => finish(new Error('加载打印页超时')), 35000);

      iframe.onload = () => {
        try {
          const win = iframe.contentWindow;
          const doc = iframe.contentDocument;
          if (!win || !doc) {
            finish(new Error('无法访问打印页，请确认仍在本系统且已登录'));
            return;
          }

          const bodyText = doc.body?.innerText || '';
          if (/登录|session|超时|错误/i.test(bodyText.slice(0, 300))) {
            finish(new Error('登录已失效，请刷新页面重新登录'));
            return;
          }

          setTimeout(() => {
            try {
              win.focus();
              win.print();
              finish();
            } catch (e) {
              finish(e);
            }
          }, 1500);
        } catch (e) {
          finish(e);
        }
      };

      iframe.onerror = () => finish(new Error('iframe 加载失败'));
      root.appendChild(iframe);
      iframe.src = url;
    });
  }

  async function runBatch() {
    if (state.running) return;

    const ctx = findListContext();
    if (ctx) {
      listDoc = ctx.doc;
      listBaseUrl = ctx.baseUrl;
    }

    const jobs = collectJobs();
    state.stopRequested = false;
    state.running = true;
    updateButtons();

    if (!jobs.length) {
      log('未找到学生。请先点「查询」出列表；勾选行则只打勾选的。');
      state.running = false;
      updateButtons();
      return;
    }

    const delay = Math.max(3000, Number(getPanelDocument().getElementById('bp-delay').value) || 6000);
    log(`共 ${jobs.length} 人，间隔 ${delay / 1000} 秒`);

    for (let i = 0; i < jobs.length; i++) {
      if (state.stopRequested) { log('已停止'); break; }

      const job = jobs[i];
      log(`(${i + 1}/${jobs.length}) ${job.name}`);

      try {
        await printInIframe(job.printUrl);
        log(`  ✓ 已唤起打印`);
      } catch (e) {
        log(`  ✗ 失败：${e.message}`);
      }

      if (i < jobs.length - 1 && !state.stopRequested) await sleep(delay);
    }

    if (!state.stopRequested) log('全部完成');
    state.running = false;
    updateButtons();
  }

  function updateButtons() {
    const pdoc = getPanelDocument();
    const start = pdoc.getElementById('bp-start');
    const stop = pdoc.getElementById('bp-stop');
    if (!start || !stop) return;
    start.disabled = state.running;
    stop.disabled = !state.running;
  }

  function createPanel() {
    const pdoc = getPanelDocument();
    if (pdoc.getElementById('bp-panel')) return;

    injectStyles();

    const panel = pdoc.createElement('div');
    panel.id = 'bp-panel';
    panel.innerHTML = `
      <div class="bp-head">批量打印 · 学生基本信息表</div>
      <div class="bp-body">
        <label>每人间隔（秒，建议 ≥6）
          <input id="bp-delay" type="number" value="6000" min="3000" step="1000">
        </label>
        <div class="bp-btns">
          <button id="bp-start" class="bp-start">开始批量打印</button>
          <button id="bp-stop" class="bp-stop" disabled>停止</button>
        </div>
        <div id="bp-log" class="bp-log"></div>
        <div class="bp-tip">
          位置：页面右下角蓝色面板（不是网站自带「批量处理」）<br>
          免弹窗：Chrome 快捷方式加 <code>--kiosk-printing</code>
        </div>
      </div>
    `;
    getPanelRoot().appendChild(panel);

    const head = panel.querySelector('.bp-head');
    let sx = 0, sy = 0, sl = 0, st = 0, dragging = false;
    head.addEventListener('mousedown', (e) => {
      dragging = true; sx = e.clientX; sy = e.clientY;
      const r = panel.getBoundingClientRect();
      sl = r.left; st = r.top;
      panel.style.right = panel.style.bottom = 'auto';
      panel.style.left = sl + 'px'; panel.style.top = st + 'px';
    });
    pdoc.addEventListener('mousemove', (e) => {
      if (!dragging) return;
      panel.style.left = sl + e.clientX - sx + 'px';
      panel.style.top = st + e.clientY - sy + 'px';
    });
    pdoc.addEventListener('mouseup', () => { dragging = false; });

    panel.querySelector('#bp-start').addEventListener('click', runBatch);
    panel.querySelector('#bp-stop').addEventListener('click', () => {
      state.stopRequested = true;
      log('正在停止…');
    });

    log('脚本就绪。请先查询出学生列表。');
  }

  function tryInit() {
    const ctx = findListContext();
    if (!ctx) return;
    listDoc = ctx.doc;
    listBaseUrl = ctx.baseUrl;
    createPanel();
  }

  tryInit();

  const observer = new MutationObserver(() => tryInit());
  observer.observe(document.documentElement, { childList: true, subtree: true });
  try {
    observer.observe(window.top.document.documentElement, { childList: true, subtree: true });
  } catch {
    /* ignore */
  }
})();