/**
 * AKSRT Captcha front-end runtime — cloud providers only (tencent / aliyun / cloudflare / geetest).
 *
 * PHP renders passive mounts via [data-aksrt-captcha-config] (JSON config attribute);
 * this script scans them, registers AKSRTCaptchaState.scenes[scene], loads the provider
 * SDK once per page, and writes verified tokens back into the surrounding form.
 * Bundled into assets/js/build/public.js by tools/build-public-assets.mjs.
 */
(function () {
  'use strict';

  var TOKEN_FIELDS = [
    'cf_turnstile_response',
    'tencent_ticket', 'tencent_randstr', 'tencent_sid',
    'geetest_lot_number', 'geetest_captcha_output', 'geetest_pass_token', 'geetest_gen_time',
    'aliyun_captcha_verify_param'
  ];

  var root = (window.AKSRTCaptchaState = window.AKSRTCaptchaState || { loaders: {}, scenes: {} });
  root.rescan = scan;

  function scan() {
    var mounts = document.querySelectorAll('[data-aksrt-captcha-config]');
    Array.prototype.forEach.call(mounts, function (el) {
      if (el.dataset.aksrtCaptchaBound) {
        return;
      }
      el.dataset.aksrtCaptchaBound = '1';
      var config;
      try {
        config = JSON.parse(el.getAttribute('data-aksrt-captcha-config'));
      } catch (e) {
        return;
      }
      if (config && config.scene && config.uid && config.vid) {
        initMount(config);
      }
    });
  }

  /**
   * One mount = one scene instance. Mirrors the scene semantics of the previous
   * per-render inline script: the last initialized mount wins scenes[scene].
   */
  function initMount(C) {
    var root = window.AKSRTCaptchaState;
    var box, hField, form = null;
    var verified = false;
    var pendingAction = null;
    var triggerCaptcha = function () { showTip('验证码加载中，请稍候', '#e67e22'); };

    function loadScriptOnce(key, src, readyCheck) {
      if (typeof readyCheck === 'function' && readyCheck()) { return Promise.resolve(); }
      if (root.loaders[key]) { return root.loaders[key]; }
      root.loaders[key] = new Promise(function (resolve, reject) {
        var existing = document.querySelector('script[data-aksrt-sdk="' + key + '"]');
        if (existing) {
          if (typeof readyCheck === 'function' && readyCheck()) { resolve(); return; }
          existing.addEventListener('load', function () { resolve(); }, { once: true });
          existing.addEventListener('error', function () { reject(new Error(key + ' load failed')); }, { once: true });
          return;
        }
        var script = document.createElement('script');
        script.src = src;
        script.async = true;
        script.setAttribute('data-aksrt-sdk', key);
        script.onload = function () { resolve(); };
        script.onerror = function () { reject(new Error(key + ' load failed')); };
        document.head.appendChild(script);
      });
      return root.loaders[key];
    }

    function findForm() {
      form = box.closest('form');
      if (!form && C.scene === 'comment') form = document.getElementById('commentform');
      if (!form && (C.scene === 'login' || C.scene === 'register')) {
        form = box.closest('[data-auth-form]') || document.querySelector('[data-auth-form]');
      }
      if (!form && C.scene === 'bind_phone') {
        form = document.getElementById('aksrt-bind-phone-form')
          || document.querySelector('[data-aksrt-bind-phone-form]')
          || document.querySelector('.auth-form');
      }
      return form;
    }

    function bindSubmit() {
      if (!form) return;
      form.addEventListener('submit', function (e) {
        if (verified || hField.value === '1') return;
        e.preventDefault(); e.stopImmediatePropagation();
        pendingAction = null; triggerCaptcha();
      }, true);
    }

    function setField(name, value) {
      var container = form || box;
      var el = container.querySelector('input[name="' + name + '"]');
      if (!el) {
        el = document.createElement('input');
        el.type = 'hidden';
        el.name = name;
        container.appendChild(el);
      }
      el.value = value;
    }

    function resetVerificationState() {
      verified = false;
      hField.value = '0';
      var container = form || box;
      TOKEN_FIELDS.forEach(function (n) {
        var f = container.querySelector('input[name="' + n + '"]');
        if (f) f.remove();
      });
      if (C.scene === 'download') {
        syncDownloadSiblings(false);
      }
    }

    function syncDownloadSiblings(passed) {
      var myContainer = box.closest('[data-aksrt-download-captcha]');
      if (!myContainer) return;
      document.querySelectorAll('[data-aksrt-download-captcha]').forEach(function (target) {
        if (target === myContainer) return;
        var tgtH = target.querySelector('input[name="captcha_verified"]');
        if (tgtH) tgtH.value = passed ? '1' : '0';
        TOKEN_FIELDS.forEach(function (name) {
          var f = target.querySelector('input[name="' + name + '"]');
          if (f) f.remove();
          if (passed) {
            var srcEl = myContainer.querySelector('input[name="' + name + '"]');
            if (srcEl && srcEl.value !== '') {
              var tgtEl = document.createElement('input');
              tgtEl.type = 'hidden';
              tgtEl.name = name;
              target.appendChild(tgtEl);
              tgtEl.value = srcEl.value;
            }
          }
        });
      });
    }

    function submitNativeForm() {
      if (!form) return;
      if (form.requestSubmit) { form.requestSubmit(); }
      else { HTMLFormElement.prototype.submit.call(form); }
    }

    function submitForm() {
      verified = true; hField.value = '1';
      if (C.scene === 'download') syncDownloadSiblings(true);
      if (typeof pendingAction === 'function') {
        finishPending(true);
        return;
      }
      setTimeout(resetVerificationState, 3000);
      submitNativeForm();
    }

    function showTip(msg, color) {
      var t = box.querySelector('.captcha-tip');
      if (!t) {
        t = document.createElement('div');
        t.className = 'captcha-tip';
        t.style.cssText = 'font-size:12px;margin-top:4px;text-align:left;';
        box.appendChild(t);
      }
      t.style.color = color || '#e74c3c';
      t.textContent = msg;
      setTimeout(function () { if (t.parentNode) t.remove(); }, 4000);
    }

    function showLoading() { box.innerHTML = '<div style="text-align:center;padding:20px;color:#9ca3af;">验证码加载中...</div>'; }
    function clearLoading() { box.innerHTML = ''; }

    function finishPending(ok) {
      var action = pendingAction;
      pendingAction = null;
      if (typeof action === 'function') { action(!!ok); }
    }

    function cancelPending(msg) {
      if (msg) showTip(msg, '#e67e22');
      finishPending(false);
    }

    root.scenes[C.scene] = {
      verify: function (callback) {
        if (verified || hField.value === '1') {
          if (typeof callback === 'function') callback(true);
          return;
        }
        pendingAction = (typeof callback === 'function') ? function (ok) { callback(ok !== false); } : null;
        triggerCaptcha();
      },
      reset: resetVerificationState
    };

    // ============ 腾讯云 Captcha 2.0 ============
    function loadTencent() {
      showLoading();
      loadScriptOnce('tencent', 'https://turing.captcha.qcloud.com/TJCaptcha.js', function () {
        return typeof TencentCaptcha !== 'undefined';
      }).then(function () {
        clearLoading();
        var capIns = null;
        triggerCaptcha = function () {
          if (!capIns) {
            capIns = new TencentCaptcha(C.tc.app_id, function (res) {
              if (res.ret === 2) { cancelPending('已取消验证'); return; }
              if (res.ret === 0 && res.ticket) {
                if (res.ticket.indexOf('trerror_') === 0) {
                  showTip('验证码服务异常，请刷新页面重试', '#e67e22');
                  return;
                }
                setField('tencent_ticket', res.ticket);
                setField('tencent_randstr', res.randstr);
                setField('tencent_sid', res.sid || '');
                submitForm();
                return;
              }
              if (res.errorCode) {
                var errorMap = { 1001: '验证码组件加载失败', 1002: '验证码超时', 1006: '验证码配置拉取失败', 1008: '验证码页面加载异常', 1012: '验证码刷新次数过多', 1013: '验证码网络异常' };
                showTip(errorMap[res.errorCode] || ('验证码异常(errorCode:' + res.errorCode + ')'), '#e74c3c');
              }
            }, { userLanguage: 'zh-cn' });
          }
          capIns.show();
        };
      }).catch(function () { clearLoading(); showTip('验证码组件加载失败，请刷新重试', '#e74c3c'); });
    }

    // ============ Cloudflare Turnstile（弹窗） ============
    function loadCloudflare() {
      var cfWidgetId = null, cfVerifying = false, cfModal = null;

      if (typeof turnstile === 'undefined') {
        window['onTurnstileLoad_' + C.uid] = function () {};
        loadScriptOnce('cloudflare', 'https://challenges.cloudflare.com/turnstile/v0/api.js?onload=onTurnstileLoad_' + C.uid + '&render=explicit', function () {
          return typeof turnstile !== 'undefined';
        });
      }

      function renderWidget() {
        if (cfWidgetId) { try { turnstile.remove(cfWidgetId); } catch (e) {} cfWidgetId = null; }
        if (typeof turnstile === 'undefined') { setTimeout(renderWidget, 200); return; }
        cfWidgetId = turnstile.render('#modalWidget_' + C.uid, {
          sitekey: C.cf.site_key, theme: C.cf.theme, size: C.cf.size, action: 'aksrt-verify', cdata: C.scene,
          callback: function (token) {
            if (!cfVerifying) return;
            cfVerifying = false;
            setField('cf_turnstile_response', token);
            closeModal();
            submitForm();
          },
          'error-callback': function () { showTip('验证码失败，请重试', '#e74c3c'); cfWidgetId = null; setTimeout(renderWidget, 500); },
          'expired-callback': function () { showTip('验证码已过期，请重新验证', '#e67e22'); cfWidgetId = null; setTimeout(renderWidget, 500); }
        });
      }

      function createModal() {
        cfModal = document.createElement('div');
        cfModal.className = 'aksrt-captcha-modal-overlay';
        cfModal.innerHTML = '<div class="aksrt-captcha-modal-backdrop"></div>' +
          '<div class="aksrt-captcha-modal-box"><div class="aksrt-captcha-modal-header">' +
          '<span class="aksrt-captcha-modal-title">人机验证</span>' +
          '<button type="button" class="aksrt-captcha-modal-close">&times;</button></div>' +
          '<div class="aksrt-captcha-modal-body"><p class="aksrt-captcha-modal-hint">请完成验证后继续操作</p>' +
          '<div id="modalWidget_' + C.uid + '" class="aksrt-captcha-modal-widget"></div></div></div></div>';
        document.body.appendChild(cfModal);
        var cancelFn = function () { cfVerifying = false; closeModal(); cancelPending('已取消验证'); };
        cfModal.querySelector('.aksrt-captcha-modal-backdrop').addEventListener('click', cancelFn);
        cfModal.querySelector('.aksrt-captcha-modal-close').addEventListener('click', cancelFn);
        renderWidget();
      }

      function closeModal() {
        if (cfWidgetId) { try { turnstile.remove(cfWidgetId); } catch (e) {} cfWidgetId = null; }
        if (cfModal && cfModal.parentNode) { cfModal.parentNode.removeChild(cfModal); }
        cfModal = null;
      }

      triggerCaptcha = function () {
        if (cfVerifying) { showTip('验证码进行中，请稍候', '#e67e22'); return; }
        cfVerifying = true;
        createModal();
      };
    }

    // ============ 极验 GeeTest v4 ============
    function loadGeetest() {
      showLoading();
      var captchaId = (C.gt && C.gt.captcha_id) ? String(C.gt.captcha_id).trim() : '';
      var product = (C.gt && C.gt.product) ? String(C.gt.product) : 'bind';
      if (!captchaId) {
        clearLoading();
        showTip('极验 Captcha ID 未配置，请到后台「功能&权限 → 人机验证」填写并保存', '#e74c3c');
        return;
      }
      function render() {
        clearLoading();
        initGeetest4({ captchaId: captchaId, product: product, hideSuccess: true }, function (capIns) {
          window['__gt_' + C.uid] = capIns;
          function onSuccess() {
            var result = capIns.getValidate();
            if (!result) return;
            setField('geetest_lot_number', result.lot_number);
            setField('geetest_captcha_output', result.captcha_output);
            setField('geetest_pass_token', result.pass_token);
            setField('geetest_gen_time', result.gen_time);
            submitForm();
          }
          if (product === 'bind' || product === 'popup') {
            capIns.onReady(function () {}).onSuccess(onSuccess).onClose(function () { cancelPending('已取消验证'); });
          } else {
            capIns.appendTo('#' + C.uid).onSuccess(onSuccess).onClose(function () { cancelPending('已取消验证'); });
          }
        });
        triggerCaptcha = function () {
          var instance = window['__gt_' + C.uid];
          if (!instance) { showTip('验证码加载中，请稍候再试', '#e67e22'); return; }
          if (product === 'bind' || product === 'popup') { instance.showCaptcha(); return; }
          showTip('请先完成人机验证', '#e67e22');
        };
      }
      if (typeof initGeetest4 === 'undefined') {
        loadScriptOnce('geetest', 'https://static.geetest.com/v4/gt4.js', function () {
          return typeof initGeetest4 !== 'undefined';
        }).then(render).catch(function () { clearLoading(); showTip('极验组件加载失败', '#e74c3c'); });
        return;
      }
      render();
    }

    // ============ 阿里云 CAPTCHA 2.0 V3 ============
    function loadAliyun() {
      showLoading();
      window.AliyunCaptchaConfig = { region: C.al.region || 'cn', prefix: C.al.prefix };

      function render() {
        clearLoading();
        var captchaIns = null;
        var btn = box.closest('form') ? box.closest('form').querySelector('button[type="submit"], input[type="submit"]') : null;
        window.initAliyunCaptcha({
          SceneId: C.al.scene_id, mode: 'popup', element: '#' + C.uid,
          button: btn ? '#' + (btn.id || (function () { btn.id = 'aksrt-captcha-btn-' + C.scene; return btn.id; })()) : null,
          success: function (captchaVerifyParam) {
            setField('aliyun_captcha_verify_param', captchaVerifyParam);
            submitForm();
          },
          fail: function (result) { showTip('验证码失败: ' + (result || '请重试'), '#e74c3c'); captchaIns = null; },
          getInstance: function (instance) { captchaIns = instance; },
          slideStyle: { width: 360, height: 40 }, language: 'cn'
        });
        triggerCaptcha = function () {
          if (captchaIns && captchaIns.show) { captchaIns.show(); return; }
          showTip('验证码组件加载中，请稍候再试', '#e67e22');
        };
      }

      if (typeof window.initAliyunCaptcha === 'undefined') {
        loadScriptOnce('aliyun', 'https://o.alicdn.com/captcha-frontend/aliyunCaptcha/AliyunCaptcha.js', function () {
          return typeof window.initAliyunCaptcha !== 'undefined';
        }).then(render).catch(function () { clearLoading(); showTip('验证码组件加载失败，请刷新重试', '#e74c3c'); });
        return;
      }
      render();
    }

    function loadProvider() {
      switch (C.provider) {
        case 'tencent': loadTencent(); break;
        case 'cloudflare': loadCloudflare(); break;
        case 'geetest': loadGeetest(); break;
        case 'aliyun': loadAliyun(); break;
      }
    }

    function init() {
      box = document.getElementById(C.uid);
      hField = document.getElementById(C.vid);
      if (!box || !hField) return;

      var tries = 0;
      (function retryFind() {
        findForm();
        if (!form && ++tries < 10) { setTimeout(retryFind, 150); }
        else {
          if (form) bindSubmit();
          setTimeout(loadProvider, 0);
        }
      })();
    }

    init();
  }

  if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', scan);
  } else {
    setTimeout(scan, 50);
  }
})();