// ==UserScript==
// @name         安徽中职学籍-批量打印学生基本信息表
// @namespace    https://scriptcat.org/
// @version      1.2.4
// @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        none
// @run-at       document-idle
// ==/UserScript==

(function () {
  'use strict';

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

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

  function linkHasXsqbId(link) {
    const text = (link.getAttribute('href') || '') + (link.getAttribute('onclick') || '');
    return /xsqb\.id=([A-F0-9]+)/i.test(text);
  }

  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(linkHasXsqbId);
    return hasNameHeader && hasStudentLink;
  }

  /** 与 batch-print-students 相同思路：在当前 frame 判断是否列表页 */
  function isListPageHere() {
    const u = location.href;
    if (/goStuDetail/i.test(u)) return false;
    if (/showDetail\.action/i.test(u) && /isPrint=0/i.test(u)) return false;
    if (/studInfoManage/i.test(u) && !/goStuDetail/i.test(u)) return true;

    if (isListPageIn(document)) return true;

    const bodyTxt = document.body?.innerText || '';
    return (
      /查询结果/.test(bodyTxt) ||
      (/学籍号/.test(bodyTxt) && /姓名/.test(bodyTxt))
    );
  }

  function syncListContext() {
    listDoc = document;
    listBaseUrl = location.href;
  }

  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 text = (link.getAttribute('href') || '') + (link.getAttribute('onclick') || '');
    const m = text.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.querySelectorAll('a')].find(linkHasXsqbId);
      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 = document.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 iframe = document.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'));
      document.documentElement.appendChild(iframe);
      iframe.src = url;
    });
  }

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

    syncListContext();

    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(document.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 start = document.getElementById('bp-start');
    const stop = document.getElementById('bp-stop');
    if (!start || !stop) return;
    start.disabled = state.running;
    stop.disabled = !state.running;
  }

  function createPanel() {
    if (document.getElementById('bp-panel')) return;

    const panel = document.createElement('div');
    panel.id = 'bp-panel';
    panel.style.cssText = [
      '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',
    ].join(';');
    panel.innerHTML = `
      <div class="bp-head" style="padding:10px 12px;background:#409eff;color:#fff;border-radius:8px 8px 0 0;cursor:move;user-select:none;">批量打印 · 学生基本信息表</div>
      <div class="bp-body" style="padding:12px;">
        <label style="display:block;margin-bottom:8px;">每人间隔（秒，建议 ≥6）
          <input id="bp-delay" type="number" value="6000" min="3000" step="1000" style="width:72px;margin-left:6px;padding:2px 6px;border:1px solid #dcdfe6;border-radius:4px;">
        </label>
        <div style="display:flex;gap:8px;margin-top:10px;">
          <button id="bp-start" type="button" style="flex:1;padding:8px 0;border:none;border-radius:4px;cursor:pointer;font-size:13px;background:#409eff;color:#fff;">开始批量打印</button>
          <button id="bp-stop" type="button" disabled style="flex:1;padding:8px 0;border:none;border-radius:4px;cursor:pointer;font-size:13px;background:#f56c6c;color:#fff;">停止</button>
        </div>
        <div id="bp-log" style="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;"></div>
        <div style="margin-top:8px;font-size:11px;color:#909399;line-height:1.4;">
          面板在含「查询结果」表格的区域内（常在 iframe 内）<br>
          先点「查询」出学生；免弹窗加 <code>--kiosk-printing</code>
        </div>
      </div>
    `;
    document.documentElement.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';
    });
    document.addEventListener('mousemove', (e) => {
      if (!dragging) return;
      panel.style.left = sl + e.clientX - sx + 'px';
      panel.style.top = st + e.clientY - sy + 'px';
    });
    document.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() {
    if (!isListPageHere()) return;
    syncListContext();
    createPanel();
  }

  tryInit();

  const observer = new MutationObserver(() => tryInit());
  observer.observe(document.documentElement, { childList: true, subtree: true });
})();