(function () {
  'use strict';

  var _gate = { index: null, opts: null };
  var MAIL_ICON = '<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M4 6h16v12H4z"/><path d="M4 8l8 5 8-5"/></svg>';
  var LOCK_ICON = '<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><rect x="5" y="11" width="14" height="10" rx="1"/><path d="M8 11V8a4 4 0 118 0v3"/></svg>';

  function esc(s) {
    if (s == null) return '';
    return String(s).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
  }

  function toast(msg, type) {
    if (typeof window.soonToast === 'function') window.soonToast(msg, type);
  }

  function apiBase() {
    var cfg = window.SOON_DEPLOY_CONFIG && window.SOON_DEPLOY_CONFIG.api_v1_base;
    if (cfg) return String(cfg).replace(/\/+$/, '');
    if (window.location) return window.location.origin + '/api/v1';
    return '/api/v1';
  }

  function ensureLayer(cb) {
    if (typeof layer !== 'undefined' && layer.open) {
      if (layer.config) layer.config({ skin: 'soon-layer' });
      cb();
      return;
    }
    if (typeof layui !== 'undefined') {
      layui.use(['layer'], function () {
        window.layer = layui.layer;
        layer.config({ skin: 'soon-layer' });
        cb();
      });
      return;
    }
    toast('登录功能暂不可用，请刷新页面后重试', 'warn');
  }

  function shellHtml(panel, reason) {
    var isReg = panel === 'register';
    var action = esc(reason || '导出或打印');
    return '<div class="soon-login-gate">' +
      '<header class="soon-login-gate__head">' +
      '<span class="soon-login-gate__eyebrow">' + (isReg ? '注册' : '登录') + '</span>' +
      '<h3 class="soon-login-gate__title">' + (isReg ? '注册后继续' : '登录后继续') + '</h3>' +
      '<p class="soon-login-gate__desc">' +
      (isReg ? '注册并登录后即可' + action + '成品。' : '预览内' + action + '成品需先登录账号。') +
      '</p></header>' +
      '<form class="soon-login-gate__form" data-role="' + (isReg ? 'register' : 'login') + '-form">' +
      '<div class="soon-input-wrap soon-login-gate__field">' +
      '<span class="soon-input-icon" aria-hidden="true">' + MAIL_ICON + '</span>' +
      '<input type="email" name="email" required class="soon-input soon-login-gate__input" placeholder="邮箱" autocomplete="email">' +
      '</div>' +
      '<div class="soon-input-wrap soon-login-gate__field">' +
      '<span class="soon-input-icon" aria-hidden="true">' + LOCK_ICON + '</span>' +
      '<input type="password" name="password" required' +
      (isReg ? ' minlength="8"' : '') +
      ' class="soon-input soon-login-gate__input" placeholder="' +
      (isReg ? '密码（至少 8 位）' : '密码') +
      '" autocomplete="' + (isReg ? 'new-password' : 'current-password') + '">' +
      '</div>' +
      '<p class="soon-login-gate__error" data-role="' + (isReg ? 'register' : 'login') + '-error" hidden></p>' +
      '<button type="submit" class="soon-btn soon-btn--block soon-login-gate__submit">' +
      (isReg ? '注册并登录' : '登录') +
      '</button>' +
      '<p class="soon-login-gate__links">' +
      (isReg ? '已有账号？<a href="#" data-action="show-login">去登录</a>' : '还没有账号？<a href="#" data-action="show-register">立即注册</a>') +
      '</p></form>' +
      '<footer class="soon-login-gate__foot">' +
      '<button type="button" class="soon-login-gate__stay" data-action="stay">继续设计</button>' +
      '</footer></div>';
  }

  function closeGate() {
    var idx = _gate.index;
    _gate = { index: null, opts: null };
    if (idx != null && typeof layer !== 'undefined') {
      try { layer.close(idx); } catch (e) { /* ignore */ }
    }
    if (typeof window.soonCleanupLayerMask === 'function') window.soonCleanupLayerMask();
  }

  function finishAuthSuccess() {
    var opts = _gate.opts;
    closeGate();
    var chain = typeof window.soonRefreshPortalAuthUi === 'function'
      ? Promise.resolve(window.soonRefreshPortalAuthUi())
      : Promise.resolve();
    return chain.then(function () {
      if (typeof window.soonReloadRecentFiles === 'function') window.soonReloadRecentFiles();
      if (opts && typeof opts.onSuccess === 'function') opts.onSuccess();
    });
  }

  function storeTokens(data) {
    if (!data || !data.access_token) return false;
    localStorage.setItem('soon_access', data.access_token);
    if (data.refresh_token) localStorage.setItem('soon_refresh', data.refresh_token);
    return true;
  }

  function swapPanel(modal, panel) {
    if (!modal || !modal.parentNode) return;
    var parent = modal.parentNode;
    var reason = _gate.opts && _gate.opts.reason;
    modal.outerHTML = shellHtml(panel, reason);
    var root = parent.querySelector('.soon-login-gate');
    if (root) bindModal(root);
  }

  function bindAuthForm(modal, role, path, failMsg) {
    var form = modal.querySelector('[data-role="' + role + '-form"]');
    if (!form) return;
    form.addEventListener('submit', function (e) {
      e.preventDefault();
      var errEl = modal.querySelector('[data-role="' + role + '-error"]');
      if (errEl) {
        errEl.hidden = true;
        errEl.textContent = '';
      }
      var email = (form.email && form.email.value || '').trim();
      var password = form.password ? form.password.value : '';
      fetch(apiBase() + path, {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ email: email, password: password }),
      }).then(function (r) { return r.json(); }).then(function (j) {
        if (!j.ok || !storeTokens(j.data)) {
          if (errEl) {
            errEl.textContent = (j && j.message) || failMsg;
            errEl.hidden = false;
          }
          return;
        }
        finishAuthSuccess();
      }).catch(function () {
        if (errEl) {
          errEl.textContent = '网络错误，请稍后重试';
          errEl.hidden = false;
        }
      });
    });
  }

  function bindModal(modal) {
    modal.addEventListener('click', function (e) {
      if (e.target.closest('[data-action="stay"]')) {
        e.preventDefault();
        closeGate();
        return;
      }
      if (e.target.closest('[data-action="show-register"]')) {
        e.preventDefault();
        swapPanel(modal, 'register');
        return;
      }
      if (e.target.closest('[data-action="show-login"]')) {
        e.preventDefault();
        swapPanel(modal, 'login');
      }
    });
    bindAuthForm(modal, 'login', '/auth/login', '登录失败');
    bindAuthForm(modal, 'register', '/auth/register', '注册失败');
  }

  function openGate(opts, panel) {
    opts = opts || {};
    ensureLayer(function () {
      if (_gate.index != null) {
        try { layer.close(_gate.index); } catch (e) { /* ignore */ }
      }
      _gate.opts = opts;
      var width = Math.min(400, window.innerWidth - 32);
      layer.open({
        type: 1,
        skin: 'soon-layer',
        title: false,
        closeBtn: 1,
        shade: [0.62, '#000'],
        shadeClose: true,
        area: [width + 'px', 'auto'],
        offset: 'auto',
        content: shellHtml(panel, opts.reason),
        success: function (layero, index) {
          var layerEl = layero && layero[0] ? layero[0] : layero;
          if (layerEl && layerEl.classList) layerEl.classList.add('soon-layer--login-gate');
          var content = layerEl && layerEl.querySelector ? layerEl.querySelector('.layui-layer-content') : null;
          if (content) {
            content.style.padding = '0';
            content.style.overflow = 'visible';
            content.style.background = 'transparent';
          }
          var modal = layerEl.querySelector('.soon-login-gate');
          _gate.index = index;
          if (modal) bindModal(modal);
        },
        end: function () {
          _gate = { index: null, opts: null };
        },
      });
    });
  }

  window.soonShowLoginGate = function (opts) { openGate(opts, 'login'); };
  window.soonShowRegisterGate = function (opts) { openGate(opts, 'register'); };
})();