/* v20 part1: header */
(function () {
  'use strict';
  if (window.__mobV20) return;
  window.__mobV20 = true;
  function $(id) { return document.getElementById(id); }
  var API = 'https://api-gateway.duoweiying.cn';
  function hideLogin() { var c = $('login-form-container'); if (c) c.style.display = 'none'; }
  function showLoginV20() { var c = $('login-form-container'); if (c) { c.style.display = 'flex'; showSec('login'); } }
  function showSec(which) {
    var m = { login: 'login-form-section', reg: 'register-form-section', fp: 'forgot-password-section' };
    Object.keys(m).forEach(function (k) { var el = $(m[k]); if (el) el.style.display = (k === which ? 'block' : 'none'); });
  }
  function setSession(token, user) {
    try {
      localStorage.setItem('user_token', token || '');
      localStorage.setItem('user_info', JSON.stringify(user || {}));
      if (user && user.id) localStorage.setItem('user_id', user.id);
    } catch (e) {}
  }
  /* guest preview */
  function guestMode() {
    try { localStorage.setItem('v20_guest', '1'); hideLogin(); guestBar(); } catch (e) {}
  }
  function guestBar() {
    try {
      if ($('v20GuestBar')) return;
      var d = document.createElement('div');
      d.id = 'v20GuestBar';
      d.style.cssText = 'position:fixed;top:0;left:0;right:0;z-index:30000;background:#eef2f7;color:#475569;font-size:12px;padding:6px 10px;display:flex;align-items:center;gap:8px;';
      d.innerHTML = '<span style="flex:1">👀 游客预览模式（只读体验，登录后可保存数据）</span><a href="javascript:void(0)" style="color:#334155;text-decoration:underline" onclick="(window.__mobV20Login||function(){})()">登录</a>';
      document.body.appendChild(d);
      var hd = document.querySelector('.mobile-header');
      if (hd) hd.style.marginTop = '30px';
    } catch (e) {}
  }
  window.__mobV20Login = function () { try { localStorage.removeItem('v20_guest'); } catch (e) {} showLoginV20(); };
  window.__mobV20Guest = guestMode;
/* v20 part2: submit & tabs */
  function doLogin(ev) {
    if (ev && ev.preventDefault) ev.preventDefault();
    var u = ($('login-username') || {}).value || '';
    var p = ($('login-password') || {}).value || '';
    if (!u || !p) { alert('请输入用户名和密码'); return; }
    fetch(API + '/api/auth/login', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ username: u, password: p }) })
      .then(function (r) { return r.json(); })
      .then(function (d) {
        /* WR-550: 后端可能只回 access_token / data.token, 统一取值, 否则登录成功却不落 user_token */
        var _tk = (d && (d.token || d.access_token)) || (d && d.data && (d.data.token || d.data.access_token)) || '';
        var _us = (d && (d.user || d.data)) || { id: u, username: u };
        if (_tk) {
          setSession(_tk, _us);
          hideLogin();
          setTimeout(function () { location.reload(); }, 200);
        } else { alert('登录失败：' + ((d && (d.message || d.detail || d.msg)) || '用户名或密码错误')); }
      }).catch(function () { alert('网络错误，请稍后重试'); });
  }
  function doRegister(ev) {
    if (ev && ev.preventDefault) ev.preventDefault();
    var u = ($('register-username') || {}).value || '';
    var e = ($('register-email') || {}).value || '';
    var p = ($('register-password') || {}).value || '';
    var p2 = ($('register-confirm-password') || {}).value || '';
    if (!u || !p) { alert('请填写用户名与密码'); return; }
    if (p !== p2) { alert('两次密码不一致'); return; }
    if (!($('v11AgreeReg') || {}).checked) { alert('请先勾选同意《用户协议与隐私政策》'); return; }
    fetch(API + '/api/auth/register', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ username: u, email: e || u + '@dw.cn', password: p }) })
      .then(function (r) { return r.json(); })
      .then(function (d) {
        var _us = (d && (d.user || d.data)) || {};
        var _tk = (d && (d.token || d.access_token)) || (d && d.data && (d.data.token || d.data.access_token)) || '';
        if (_us && _us.id) {
          setSession(_tk, _us);
          hideLogin();
          setTimeout(function () { location.reload(); }, 200);
        } else { alert('注册失败：' + ((d && (d.message || d.detail || d.msg)) || '请重试')); }
      }).catch(function () { alert('网络错误，请稍后重试'); });
  }
  function bindTabs() {
    var showReg = $('show-register'); if (showReg) showReg.onclick = function () { showSec('reg'); };
    var showLogin2 = $('show-login-from-register'); if (showLogin2) showLogin2.onclick = function () { showSec('login'); };
    var showFp = $('show-forgot-password'); if (showFp) showFp.onclick = function () { alert('请联系在线客服重置密码（或使用“注册”新账号）'); };
    var showLg3 = $('show-login-from-forgot'); if (showLg3) showLg3.onclick = function () { showSec('login'); };
  }
/* v20 part3: boot & injection */
  function bindSubmit() {
    var lf = $('login-form');
    if (lf) { lf.addEventListener('submit', doLogin); var lb = lf.querySelector('button[type="submit"]'); if (lb) lb.onclick = doLogin; }
    var rf = $('register-form');
    if (rf) { rf.addEventListener('submit', doRegister); var rb = rf.querySelector('button[type="submit"]'); if (rb) rb.onclick = doRegister; }
  }
  function injectGuestBtn() {
    try {
      var section = $('login-form-container');
      if (!section) return;
      var card = section.querySelector('.form-section');
      if (!card || $('v20GuestBtn')) return;
      var g = document.createElement('button');
      g.id = 'v20GuestBtn';
      g.type = 'button';
      g.style.cssText = 'display:block;width:100%;margin-top:10px;padding:10px;border:1px solid #e2e8f0;border-radius:9px;background:#fff;color:#64748b;font-size:13px;cursor:pointer;';
      g.textContent = '👀 游客预览（只读体验界面）';
      g.onclick = function () { guestMode(); };
      card.appendChild(g);
    } catch (e) {}
  }
  function boot() {
    injectGuestBtn();
    bindSubmit();
    bindTabs();
    var hasTok = !!localStorage.getItem('user_token');
    if (hasTok) { hideLogin(); }
    if (localStorage.getItem('v20_guest') === '1') { hideLogin(); guestBar(); }
  }
  if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', boot);
  else boot();
  setTimeout(boot, 700);
  setTimeout(boot, 2200);
})();