(function () {
  'use strict';

  function initAuthForm(options) {
    options = options || {};
    var formId = options.formId;
    var errorId = options.errorId;
    var passwordId = options.passwordId || 'password';
    var pwdToggleId = options.pwdToggleId || 'pwdToggle';
    var endpoint = options.endpoint || '';
    var failMsg = options.failMsg || '操作失败';
    var redirectFallback = options.redirectFallback || 'index.web.html';

    if (options.redirectIfAuthed !== false && localStorage.getItem('soon_access')) {
      var p = new URLSearchParams(location.search);
      location.href = soonSafeRedirect(p.get('redirect'), redirectFallback);
      return;
    }

    if (options.linkId && options.linkHrefBase) {
      var redirectQ = new URLSearchParams(location.search).get('redirect');
      if (redirectQ) {
        var link = document.getElementById(options.linkId);
        if (link) link.href = options.linkHrefBase + '?redirect=' + encodeURIComponent(redirectQ);
      }
    }

    var pwdToggle = document.getElementById(pwdToggleId);
    if (pwdToggle) {
      pwdToggle.onclick = function () {
        var p = document.getElementById(passwordId);
        var show = p.type === 'password';
        p.type = show ? 'text' : 'password';
        this.textContent = show ? '隐藏' : '显示';
      };
    }

    var form = document.getElementById(formId);
    if (!form || !endpoint) return;

    form.onsubmit = function (e) {
      e.preventDefault();
      var err = document.getElementById(errorId);
      var pwd = document.getElementById(passwordId);
      if (err) {
        err.style.display = 'none';
        err.textContent = '';
      }
      if (pwd) pwd.classList.remove('is-error');

      var base = (window.SOON_DEPLOY_CONFIG && window.SOON_DEPLOY_CONFIG.api_v1_base) || '/api/v1';
      var params = new URLSearchParams(location.search);
      var body = typeof options.getBody === 'function' ? options.getBody() : {};

      fetch(base + endpoint, {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify(body),
      }).then(function (r) { return r.json(); }).then(function (j) {
        if (j.ok) {
          localStorage.setItem('soon_access', j.data.access_token);
          localStorage.setItem('soon_refresh', j.data.refresh_token);
          location.href = soonSafeRedirect(params.get('redirect'), redirectFallback);
        } else {
          if (err) {
            err.textContent = j.message || failMsg;
            err.style.display = 'block';
          }
          if (pwd) pwd.classList.add('is-error');
        }
      }).catch(function () {
        if (err) {
          err.textContent = '网络错误，请稍后重试';
          err.style.display = 'block';
        }
      });
    };
  }

  window.soonInitAuthForm = initAuthForm;
})();