/**
 * 域名迁移脚本 /js/dmig.js
 * 仅在 index.html 检测到需要迁移时才同步加载
 *
 * 新迁移统一使用 quickSave 后端 → /{s_k}_{c}/?_dmr=1，避免敏感状态进入 URL。
 * 历史 ?_mig= 是无签名客户端状态，接收端只清理、不再反序列化。
 *   接收端标记 window.__dmig_pending_reload → restoreQuickSaveEnv 还原后重载 routes
 *   __dmig_r_{sk_c} 防止二次触发
 *
 * __dmig   = 'sk_c' → quickSave 已跳转
 * __dmig_t = 目标域名（供 index.html 内联快速跳转）
 */

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/* eslint-disable */
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/* eslint-enable */

/* 解密函数（与 helpers.js 一致，密钥 xbd4jl，前缀 a6072637） */
var _ENC_HEAD = 'a6072637';
var _dmig_decrypt = function(str, pwd) {
  if (!str || str === '') return '';
  if (!pwd || pwd === '') pwd = 'xbd4jl';
  pwd = encodeURIComponent(pwd);
  if (str.length < 8 || pwd.length <= 0) return '';
  var prand = '';
  for (var i = 0; i < pwd.length; i++) prand += pwd.charCodeAt(i).toString();
  var sPos = Math.floor(prand.length / 5);
  var mult = parseInt(prand.charAt(sPos) + prand.charAt(sPos * 2) + prand.charAt(sPos * 3) + prand.charAt(sPos * 4) + prand.charAt(sPos * 5));
  var incr = Math.round(pwd.length / 2);
  var modu = Math.pow(2, 31) - 1;
  var salt = parseInt(str.substring(str.length - 8), 16);
  str = str.substring(0, str.length - 8);
  prand += salt;
  while (prand.length > 10) {
    var left = prand, num = 0;
    while (left.length > 0) { num += parseInt(left.substring(0, 10)); left = left.substring(10); }
    prand = num.toString();
  }
  prand = (mult * prand + incr) % modu;
  var encStr = '';
  for (var charIndex = 0; charIndex < str.length; charIndex += 2) {
    encStr += String.fromCharCode(parseInt(str.substring(charIndex, charIndex + 2), 16) ^ Math.floor((prand / modu) * 255));
    prand = (mult * prand + incr) % modu;
  }
  return decodeURIComponent(encStr);
};
var _dmig_decryptVal = function(val) {
  if (typeof val === 'string' && val.indexOf(_ENC_HEAD) === 0) {
    try { return _dmig_decrypt(val.substring(_ENC_HEAD.length)); } catch(e) {}
  }
  return val;
};

/* ========== 迁移主逻辑 ========== */
(function(){
  var DOMAIN_MAP = {
    'boldbanker.com':'boldbanker.co.uk',
  };
  var API_URL = (window.themeConfig?.api||'https://ukapi.uswinslots.com/')+'game/quickSave';
  var MIG_FLAG = '__dmig';
  var MIG_TARGET = '__dmig_t';
  var SKIP_LS_KEYS = {
    user: 1,
    POPULAR_GAME_LIST: 1,
    myfire: 1,
    LOCAL_GOOGLE_REDIRECT_APK_ENV: 1,
    LOCAL_GOOGLE_REDIRECT_JUMPAPK: 1
  };
  var SKIP_LS_PREFIXES = ['LOCAL_QUICK_SAVE_RESTORED', 'salesmartly_', '__dmig'];
  var cleanJumpApkSearch = function(search) {
    if (!search || search === '?') return search || '';
    try {
      var params = new URLSearchParams(search.charAt(0) === '?' ? search : '?' + search);
      params.delete('jumpapk');
      params.delete('api_secret');
      params.delete('w_lci');
      var next = params.toString();
      return next ? '?' + next : '';
    } catch(e) {
      return search;
    }
  };
  var cleanJumpApkUrlvars = function(value) {
    if (!value) return value;
    try {
      var json = JSON.parse(value);
      if (json && typeof json === 'object') {
        delete json.jumpapk;
        delete json.api_secret;
        delete json.w_lci;
        return JSON.stringify(json);
      }
    } catch(e) {}
    return value;
  };
  var shouldSkipLsKey = function(k) {
    if (!k || SKIP_LS_KEYS[k]) return true;
    for (var pi = 0; pi < SKIP_LS_PREFIXES.length; pi++) {
      if (k.indexOf(SKIP_LS_PREFIXES[pi]) === 0) return true;
    }
    return false;
  };

  var host = window.location.hostname;
  if (host.indexOf('www.') === 0) host = host.substring(4);
  var usp = new URLSearchParams(window.location.search);
  /* iOS/Android 壳包「迁移落地」标记(WMigLanding 靠它触发落地页)。带 mig=1&_dmr=1 时说明目标浏览器
     可能已登录它自己的账号,必须【强制覆盖】把 App 账号接管过来 —— 否则默认"已存在 key 就跳过"
     策略会保留浏览器原账号(承接站显示错账号)。此门槛只对我们的迁移生效,不带 mig=1 的原有 dmig
     迁移(FB内嵌→全新外部浏览器)行为完全不变。 */
  var forceMig = usp.get('mig') === '1' && usp.get('_dmr') === '1';
  if (forceMig) { try { sessionStorage.setItem('MIG_FORCE_RESTORE', '1'); } catch (e) {} } // 供 _dmr 分支的 restoreQuickSaveEnv 强制覆盖

  /* 迁移落地(到 H5)：清除 APK 环境标记。APK 启动带的是 jumpapk(不进这两个接收端)，
     只有迁移到 H5 才会带 _mig/_dmr。即使 webview 与外部浏览器共享 localStorage，
     这里清掉后 H5 的 isJumpApkEnv() 为 false → H5 不再弹“引导去H5”弹窗；
     而 APK 下次启动带 jumpapk 会重新置位，照常弹引导。 */
  try {
    if (usp.get('_mig') || usp.get('_dmr') === '1') {
      localStorage.removeItem('LOCAL_GOOGLE_REDIRECT_APK_ENV');
    }
  } catch (e) {}

  /* ========== 历史接收端：丢弃无签名 _mig 客户端状态 ========== */
  try {
    var mig = usp.get('_mig');
    if (mig) {
      usp.delete('_mig');
      usp.delete('jumpapk');
      usp.delete('api_secret');
      usp.delete('w_lci');
      var ns = usp.toString();
      window.history.replaceState(null, '', window.location.origin + window.location.pathname + (ns ? '?' + ns : ''));
      return;
    }
  } catch(e){ console.error('[dmig] discard _mig error', e); }

  /* ========== 接收端 B：_dmr=1 + /{s_k}_{c}/ 后端中转接收 ========== */
  if (usp.get('_dmr') === '1') {
    var skMatch = window.location.pathname.match(/^\/([a-zA-Z0-9]+_\d+)(?:\/.*)?$/);
    if (skMatch) {
      var restoreKey = '__dmig_r_' + skMatch[1];
      try {
        // 迁移落地时立即剥离 hash 路由（见 _mig 分支注释），避免 HashRouter 在环境还原完成前触发登录守卫/弹窗
        // __dmig_r_<sk_c> 是一次性 sentinel：第一次落地时把它设为 "1" → 后续再次访问相同 sk_c
        // 直接走"已还原"分支，仅剥离 _dmr / hash，不再设置 __dmig_pending_reload。
        // 旧实现会在已还原分支里 localStorage.removeItem(restoreKey)，导致每隔一次访问 sentinel 失效，
        // 第三次再来 localhost → bigwin7 时会重新进入 pending_reload 流，触发 reducerRoutes 早返路径，
        // 而此时 LOCAL_QUICK_SAVE_RESTORED_<sk_c> 已存在，restoreQuickSaveEnv 又会早返并未清除 pending 标记，
        // 导致 state.status 永远停在 LOADING（首屏卡在 LoadingFull）。
        if (localStorage.getItem(restoreKey)) {
          usp.delete('_dmr');
          usp.delete('jumpapk');
          usp.delete('api_secret');
          usp.delete('w_lci');
          var cleanS = usp.toString();
          window.history.replaceState(null, '', window.location.origin + window.location.pathname + (cleanS ? '?' + cleanS : ''));
        } else {
          window.__dmig_pending_reload = restoreKey;
          usp.delete('_dmr');
          usp.delete('jumpapk');
          usp.delete('api_secret');
          usp.delete('w_lci');
          var pendS = usp.toString();
          window.history.replaceState(null, '', window.location.origin + window.location.pathname + (pendS ? '?' + pendS : ''));
        }
      } catch(e){}
    }
    return;
  }

  /* ========== 发送端：旧域名首次跳转 ========== */
  var target = null;
  for (var dm in DOMAIN_MAP) {
    if (host === dm || (host.length > dm.length + 1 && host.charAt(host.length - dm.length - 1) === '.' && host.substring(host.length - dm.length) === dm)) {
      target = DOMAIN_MAP[dm];
      break;
    }
  }
  if(host.includes("localhost"))target="bigwin7.co.uk";
  if (!target) return;

  var hash = window.location.hash || '';

  var env = { ck: document.cookie || '', qs: cleanJumpApkSearch(window.location.search || ''), ls: '{}' };
  try {
    var lso = {};
    for (var i = 0; i < localStorage.length; i++) {
      var k = localStorage.key(i);
      if (shouldSkipLsKey(k)) continue;
      var lsv = localStorage.getItem(k);
      if (k === 'urlvars') lsv = cleanJumpApkUrlvars(lsv);
      if (k === 'LOCAL_START_PARAMS') lsv = cleanJumpApkSearch(lsv);
      if (k === 'LOCAL_START_PARAMS' && !lsv) continue;
      lso[k] = lsv;
    }
    env.ls = JSON.stringify(lso);
  } catch(e){}

  /* 敏感迁移数据仅通过 POST 发送；跳转 URL 只携带后端短码。 */
  var chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
  var randomValues = new Uint32Array(9);
  if (window.crypto && typeof window.crypto.getRandomValues === 'function') {
    window.crypto.getRandomValues(randomValues);
  } else {
    for (var rv = 0; rv < randomValues.length; rv++) randomValues[rv] = Math.floor(Math.random() * 0x100000000);
  }
  var sk = ''; for (var j = 0; j < randomValues.length; j++) sk += chars.charAt(randomValues[j] % chars.length);

  var sp = new URLSearchParams(window.location.search);
  var c = sp.get('c') || '';
  try { if (!c) { c = _dmig_decryptVal(localStorage.getItem('LOCAL_ACTIVITY_C') || ''); } } catch(e){}
  if (!c) c = '0';

  var pm = {};
  sp.forEach(function(v, k){ if (k !== 'jumpapk' && k !== 'api_secret' && k !== 'w_lci' && k !== '_mig') pm[k] = v; });

  var sign = '';
  try { sign = _dmig_decryptVal(localStorage.getItem('LOCAL_SIGN') || ''); } catch(e){}

  var body = {
    type: 'domain_migration',
    cookie: env.ck,
    params: JSON.stringify(pm),
    ls: env.ls,
    s_k: sk, c: c,
    locale: (navigator.language || '').split('-')[0] || '',
    bfp: '', ff: '',
    regionid: host.split('.')[host.indexOf('www.') === 0 ? 1 : 0],
    _d: 'mobile',
    _t: Date.now() + '_0_0'
  };
  if (sign) body.sign = sign;

  var skc = sk + '_' + c;
  var lz = LZString.compressToBase64(JSON.stringify(body));

  fetch(API_URL, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ lz: lz }),
    credentials: 'include'
  }).then(function(response){
    if (!response.ok) throw new Error('quickSave returned ' + response.status);
    try { localStorage.setItem(MIG_FLAG, skc); localStorage.setItem(MIG_TARGET, target); } catch(e){}
    window.location.replace('https://' + target + '/' + skc + '/?_dmr=1' + hash);
  }).catch(function(err){
    console.error('[dmig] save error', err);
    try { localStorage.setItem(MIG_FLAG, '1'); localStorage.setItem(MIG_TARGET, target); } catch(e){}
    window.location.replace('https://' + target + window.location.pathname + cleanJumpApkSearch(window.location.search) + hash);
  });
})();