// ==UserScript==
// @name         CPA to sub2api 迁移
// @namespace    cpa-sub2api-local
// @version      1.3.2
// @description  在 CPA 和 sub2api 页面提供手动 JSON 中间态导入导出工具
// @match        *://*/*
// @license MIT
// @grant        GM_setClipboard
// @grant        GM_xmlhttpRequest
// @downloadURL https://update.greasyfork.icu/scripts/576113/CPA%20to%20sub2api%20%E8%BF%81%E7%A7%BB.user.js
// @updateURL https://update.greasyfork.icu/scripts/576113/CPA%20to%20sub2api%20%E8%BF%81%E7%A7%BB.meta.js
// ==/UserScript==

(function () {
  'use strict';

  var STORAGE_KEY = 'cpa_sub2api_bridge_settings_v1';
  var EXPORT_CACHE_KEY = 'last_sub2api_export_text';
  var CPA_AUTH_DOWNLOAD_BATCH_SIZE = 50;
  var state = {
    outputText: '',
    cpaFiles: []
  };

  function defaultCpaBaseUrl() {
    return window.location.origin;
  }

  function defaultSub2apiBaseUrl() {
    return window.location.origin + '/api/v1';
  }

  function normalizeBaseUrl(value) {
    return String(value || '').trim().replace(/\/+$/, '');
  }

  function normalizeCpaBaseUrl(value) {
    var base = normalizeBaseUrl(value);
    if (!base) return defaultCpaBaseUrl();
    return base.replace(/\/?v0\/management\/?$/i, '');
  }

  function cpaManagementUrl(settings, path) {
    return normalizeCpaBaseUrl(settings.cpaBaseUrl) + '/v0/management' + path;
  }

  function normalizeSavedSettings(saved) {
    var settings = Object.assign({
      cpaBaseUrl: defaultCpaBaseUrl(),
      cpaManagementKey: '',
      sub2apiBaseUrl: defaultSub2apiBaseUrl(),
      sub2apiToken: localStorage.getItem('auth_token') || '',
      skipDefaultGroupBind: true
    }, saved || {});

    if (!settings.cpaBaseUrl || settings.cpaBaseUrl === 'http://127.0.0.1:8317/v0/management') {
      settings.cpaBaseUrl = defaultCpaBaseUrl();
    } else {
      settings.cpaBaseUrl = normalizeCpaBaseUrl(settings.cpaBaseUrl);
    }
    if (!settings.sub2apiBaseUrl) {
      settings.sub2apiBaseUrl = defaultSub2apiBaseUrl();
    }
    return settings;
  }

  function loadSettings() {
    try {
      return normalizeSavedSettings(JSON.parse(localStorage.getItem(STORAGE_KEY) || '{}'));
    } catch (error) {
      return normalizeSavedSettings({});
    }
  }

  function saveSettings(settings) {
    localStorage.setItem(STORAGE_KEY, JSON.stringify(settings));
  }

  function getSettingsFromForm() {
    var settings = {
      cpaBaseUrl: normalizeCpaBaseUrl(document.getElementById('cpa-sub2api-cpa-base').value),
      cpaManagementKey: document.getElementById('cpa-sub2api-cpa-key').value.trim(),
      sub2apiBaseUrl: document.getElementById('cpa-sub2api-sub-base').value.trim().replace(/\/+$/, ''),
      sub2apiToken: document.getElementById('cpa-sub2api-sub-token').value.trim(),
      skipDefaultGroupBind: document.getElementById('cpa-sub2api-skip-group').checked
    };
    saveSettings(settings);
    return settings;
  }

  function applySettingsToForm() {
    var settings = loadSettings();
    document.getElementById('cpa-sub2api-cpa-base').value = settings.cpaBaseUrl;
    document.getElementById('cpa-sub2api-cpa-key').value = settings.cpaManagementKey;
    document.getElementById('cpa-sub2api-sub-base').value = settings.sub2apiBaseUrl;
    document.getElementById('cpa-sub2api-sub-token').value = settings.sub2apiToken || localStorage.getItem('auth_token') || '';
    document.getElementById('cpa-sub2api-skip-group').checked = settings.skipDefaultGroupBind !== false;
  }

  function decodeJwtPayload(token) {
    try {
      var parts = String(token || '').split('.');
      if (parts.length !== 3) return {};
      var payload = parts[1].replace(/-/g, '+').replace(/_/g, '/');
      var padding = payload.length % 4;
      if (padding) payload += '='.repeat(4 - padding);
      var jsonText = decodeURIComponent(
        atob(payload)
          .split('')
          .map(function (char) {
            return '%' + char.charCodeAt(0).toString(16).padStart(2, '0');
          })
          .join('')
      );
      return JSON.parse(jsonText);
    } catch (error) {
      return {};
    }
  }

  function parseExpiredTime(expiredString) {
    try {
      if (!expiredString) return 0;
      var date = String(expiredString).includes('+')
        ? new Date(expiredString)
        : new Date(String(expiredString).replace('Z', '+00:00'));
      var timestamp = Math.floor(date.getTime() / 1000);
      return Number.isFinite(timestamp) && timestamp > 0 ? timestamp : 0;
    } catch (error) {
      return 0;
    }
  }

  function buildAccount(sourceData, index) {
    var accessPayload = decodeJwtPayload(sourceData.access_token || '');
    var authInfo = accessPayload['https://api.openai.com/auth'] || {};
    var idTokenPayload = decodeJwtPayload(sourceData.id_token || '');
    var idTokenAuth = idTokenPayload['https://api.openai.com/auth'] || {};
    var organizations = Array.isArray(idTokenAuth.organizations) ? idTokenAuth.organizations : [];
    var expiresAt = parseExpiredTime(sourceData.expired || '') || Number(accessPayload.exp || 0);
    var accountType = sourceData.type || 'unknown';

    return {
      name: accountType + '-普号-' + String(index).padStart(4, '0'),
      platform: 'openai',
      type: 'oauth',
      credentials: {
        access_token: sourceData.access_token || '',
        chatgpt_account_id: sourceData.account_id || '',
        chatgpt_user_id: authInfo.chatgpt_user_id || '',
        expires_at: expiresAt,
        expires_in: 864000,
        organization_id: organizations.length ? organizations[0].id || '' : '',
        refresh_token: sourceData.refresh_token || ''
      },
      extra: {
        email: sourceData.email || ''
      },
      concurrency: 10,
      priority: 1,
      rate_multiplier: 1,
      auto_pause_on_expired: true
    };
  }

  function normalizeCpaInput(data) {
    if (Array.isArray(data)) return data;
    if (data && Array.isArray(data.accounts)) return data.accounts;
    if (data && typeof data === 'object') return [data];
    return [];
  }

  function convertBatch(items) {
    var accounts = [];
    var issues = [];

    normalizeCpaInput(items).forEach(function (sourceData, index) {
      if (!sourceData || typeof sourceData !== 'object' || Array.isArray(sourceData)) {
        issues.push('第 ' + (index + 1) + ' 项不是对象');
        return;
      }

      if (!sourceData.access_token || !sourceData.account_id) {
        issues.push('第 ' + (index + 1) + ' 项缺少 access_token 或 account_id');
        return;
      }

      accounts.push(buildAccount(sourceData, accounts.length + 1));
    });

    return {
      output: {
        exported_at: new Date().toISOString().replace(/\.\d{3}Z$/, 'Z'),
        proxies: [],
        accounts: accounts
      },
      issues: issues
    };
  }

  function parseJson(text) {
    var trimmed = String(text || '').trim();
    if (!trimmed) throw new Error('请输入或导入 JSON');
    return JSON.parse(trimmed);
  }

  function formatJson(data) {
    return JSON.stringify(data, null, 2);
  }

  function isSub2apiPayload(data) {
    return Boolean(
      data &&
        typeof data === 'object' &&
        !Array.isArray(data) &&
        Array.isArray(data.accounts) &&
        Array.isArray(data.proxies)
    );
  }

  function extractSub2apiPayload(data) {
    if (isSub2apiPayload(data)) return data;
    if (data && typeof data === 'object' && data.code === 0 && isSub2apiPayload(data.data)) return data.data;
    if (data && typeof data === 'object' && data.data && isSub2apiPayload(data.data.data)) return data.data.data;
    if (data && typeof data === 'object' && isSub2apiPayload(data.data)) return data.data;
    return null;
  }

  function persistExportText(text) {
    try {
      localStorage.setItem(EXPORT_CACHE_KEY, text);
    } catch (error) {}
    try {
      if (typeof GM_setValue === 'function') GM_setValue(EXPORT_CACHE_KEY, text);
    } catch (error) {}
  }

  function readPersistedExportText() {
    try {
      if (typeof GM_getValue === 'function') {
        var gmValue = GM_getValue(EXPORT_CACHE_KEY, '');
        if (gmValue) return Promise.resolve(gmValue);
      }
    } catch (error) {}
    try {
      return Promise.resolve(localStorage.getItem(EXPORT_CACHE_KEY) || '');
    } catch (error) {
      return Promise.resolve('');
    }
  }

  function gmFetch(url, options) {
    return new Promise(function (resolve, reject) {
      var requestOptions = options || {};
      var headers = requestOptions.headers || {};
      GM_xmlhttpRequest({
        method: requestOptions.method || 'GET',
        url: url,
        headers: headers,
        data: requestOptions.body,
        responseType: 'text',
        onload: function (result) {
          resolve({
            ok: result.status >= 200 && result.status < 300,
            status: result.status,
            statusText: result.statusText || '',
            text: function () { return Promise.resolve(result.responseText || ''); }
          });
        },
        onerror: function () {
          reject(new Error('网络请求失败'));
        },
        ontimeout: function () {
          reject(new Error('网络请求超时'));
        }
      });
    });
  }

  function smartFetch(url, options) {
    var nativeFetch = window.fetch ? window.fetch.bind(window) : fetch;
    return nativeFetch(url, options).catch(function (error) {
      if (typeof GM_xmlhttpRequest === 'function') return gmFetch(url, options);
      throw error;
    });
  }

  function normalizeApiResponse(payload) {
    if (payload && typeof payload === 'object' && payload.code === 0 && 'data' in payload) {
      return payload.data;
    }
    return payload;
  }

  function maskHeaderValue(key, value) {
    if (!value) return value;
    if (/authorization|management-key/i.test(key)) {
      var text = String(value);
      return text.length > 18 ? text.slice(0, 12) + '...' + text.slice(-4) : '***';
    }
    return value;
  }

  function buildRequestDebug(method, url, options, response, responseText) {
    var headers = options && options.headers ? options.headers : {};
    var safeHeaders = {};
    Object.keys(headers).forEach(function (key) {
      safeHeaders[key] = maskHeaderValue(key, headers[key]);
    });
    return [
      'Request:',
      method + ' ' + url,
      'Headers: ' + JSON.stringify(safeHeaders),
      options && options.body
        ? 'Body: ' + (typeof FormData !== 'undefined' && options.body instanceof FormData ? '[FormData] ' + Array.from(options.body.keys()).join(', ') : String(options.body).slice(0, 4000))
        : 'Body: <empty>',
      'Response:',
      'HTTP ' + response.status + ' ' + response.statusText,
      responseText || '<empty>'
    ].join('\n');
  }

  function attachDebug(error, debugText) {
    error.debugText = debugText;
    return error;
  }

  function requestJson(url, options) {
    var requestOptions = options || {};
    var method = requestOptions.method || 'GET';
    return smartFetch(url, requestOptions).then(function (response) {
      return response.text().then(function (text) {
        var data = null;
        try {
          data = text ? JSON.parse(text) : null;
        } catch (error) {
          data = null;
        }
        if (!response.ok) {
          var message = data && (data.message || data.error || data.detail);
          var detail = message || text || response.statusText || '请求失败';
          throw attachDebug(
            new Error('HTTP ' + response.status + ' ' + detail),
            buildRequestDebug(method, url, requestOptions, response, text)
          );
        }
        return normalizeApiResponse(data);
      });
    });
  }

  function getCpaHeaders(settings) {
    var headers = {};
    if (settings.cpaManagementKey) {
      headers.Authorization = 'Bearer ' + settings.cpaManagementKey;
      headers['X-Management-Key'] = settings.cpaManagementKey;
    }
    return headers;
  }

  function getSub2apiHeaders(settings, includeJson) {
    var headers = {};
    if (includeJson) headers['Content-Type'] = 'application/json';
    if (settings.sub2apiToken) headers.Authorization = 'Bearer ' + settings.sub2apiToken;
    return headers;
  }

  function downloadText(filename, text) {
    var blob = new Blob([text], { type: 'application/json;charset=utf-8' });
    openBlob(filename, blob);
  }

  function openBlob(filename, blob) {
    var url = URL.createObjectURL(blob);
    var opened = window.open(url, '_blank', 'noopener,noreferrer');
    if (!opened) {
      var anchor = document.createElement('a');
      anchor.href = url;
      anchor.download = filename;
      document.body.appendChild(anchor);
      anchor.click();
      anchor.remove();
    }
    setTimeout(function () { URL.revokeObjectURL(url); }, 60000);
  }

  function copyText(text) {
    if (typeof GM_setClipboard === 'function') {
      GM_setClipboard(text, 'text');
      return Promise.resolve();
    }
    return navigator.clipboard.writeText(text);
  }

  function crc32(bytes) {
    var crc = -1;
    for (var i = 0; i < bytes.length; i += 1) {
      crc ^= bytes[i];
      for (var j = 0; j < 8; j += 1) {
        crc = (crc >>> 1) ^ (0xedb88320 & -(crc & 1));
      }
    }
    return (crc ^ -1) >>> 0;
  }

  function uint16(value) {
    return [value & 255, (value >>> 8) & 255];
  }

  function uint32(value) {
    return [value & 255, (value >>> 8) & 255, (value >>> 16) & 255, (value >>> 24) & 255];
  }

  function dosDateTime(date) {
    var year = Math.max(1980, date.getFullYear());
    return {
      time: (date.getHours() << 11) | (date.getMinutes() << 5) | Math.floor(date.getSeconds() / 2),
      date: ((year - 1980) << 9) | ((date.getMonth() + 1) << 5) | date.getDate()
    };
  }

  function concatUint8(parts) {
    var total = parts.reduce(function (sum, part) { return sum + part.length; }, 0);
    var out = new Uint8Array(total);
    var offset = 0;
    parts.forEach(function (part) {
      out.set(part, offset);
      offset += part.length;
    });
    return out;
  }

  function bytesFromArray(values) {
    return new Uint8Array(values);
  }

  function createZip(files) {
    var encoder = new TextEncoder();
    var now = dosDateTime(new Date());
    var localParts = [];
    var centralParts = [];
    var offset = 0;

    files.forEach(function (file) {
      var nameBytes = encoder.encode(file.name);
      var dataBytes = typeof file.content === 'string' ? encoder.encode(file.content) : file.content;
      var checksum = crc32(dataBytes);
      var localHeader = bytesFromArray([].concat(
        uint32(0x04034b50), uint16(20), uint16(0x0800), uint16(0), uint16(now.time), uint16(now.date),
        uint32(checksum), uint32(dataBytes.length), uint32(dataBytes.length), uint16(nameBytes.length), uint16(0)
      ));
      localParts.push(localHeader, nameBytes, dataBytes);

      var centralHeader = bytesFromArray([].concat(
        uint32(0x02014b50), uint16(20), uint16(20), uint16(0x0800), uint16(0), uint16(now.time), uint16(now.date),
        uint32(checksum), uint32(dataBytes.length), uint32(dataBytes.length), uint16(nameBytes.length), uint16(0), uint16(0),
        uint16(0), uint16(0), uint32(0), uint32(offset)
      ));
      centralParts.push(centralHeader, nameBytes);
      offset += localHeader.length + nameBytes.length + dataBytes.length;
    });

    var centralSize = centralParts.reduce(function (sum, part) { return sum + part.length; }, 0);
    var endRecord = bytesFromArray([].concat(
      uint32(0x06054b50), uint16(0), uint16(0), uint16(files.length), uint16(files.length),
      uint32(centralSize), uint32(offset), uint16(0)
    ));
    return new Blob([concatUint8(localParts.concat(centralParts, [endRecord]))], { type: 'application/zip' });
  }

  function setStatus(message, type, debugText) {
    var status = document.getElementById('cpa-sub2api-status');
    if (status) {
      status.textContent = message || '';
      status.className = type || '';
      status.id = 'cpa-sub2api-status';
    }
    var detail = document.getElementById('cpa-sub2api-error-detail');
    if (detail) {
      detail.textContent = type === 'error' && message ? '调用错误：' + message : '';
      detail.className = type === 'error' && message ? 'error' : '';
    }
    var debugBox = document.getElementById('cpa-sub2api-debug-block');
    var debugPre = document.getElementById('cpa-sub2api-debug-text');
    if (debugBox && debugPre) {
      if (type === 'error' && debugText) {
        debugBox.style.display = 'block';
        debugBox.open = false;
        debugPre.textContent = debugText;
      } else {
        debugBox.style.display = 'none';
        debugPre.textContent = '';
      }
    }
  }

  function errorMessage(error, fallback) {
    return error instanceof Error ? error.message : fallback;
  }

  function errorDebug(error) {
    return error && typeof error === 'object' && error.debugText ? error.debugText : '';
  }

  function updateDataBadge(data) {
    var badge = document.getElementById('cpa-sub2api-data-badge');
    if (!badge) return;
    var payload = data;
    if (typeof payload === 'string') {
      try {
        payload = JSON.parse(payload);
      } catch (error) {
        payload = null;
      }
    }
    payload = extractSub2apiPayload(payload) || payload;
    var accounts = payload && Array.isArray(payload.accounts) ? payload.accounts.length : 0;
    var proxies = payload && Array.isArray(payload.proxies) ? payload.proxies.length : 0;
    badge.textContent = '当前数据：' + accounts + ' 个账号 / ' + proxies + ' 个代理';
  }

  function updateExportProgressBadge(done, total) {
    var badge = document.getElementById('cpa-sub2api-data-badge');
    if (!badge) return;
    badge.textContent = '当前数据：正在导出 ' + done + ' / ' + total + ' 个账号 / 0 个代理';
  }

  function setOutput(data, message) {
    state.outputText = typeof data === 'string' ? data : formatJson(data);
    var output = document.getElementById('cpa-sub2api-output');
    if (output) output.value = state.outputText;
    updateDataBadge(data);
    setStatus(message || '已生成 sub2api 数据', 'success');
  }

  function renderCpaFileOptions(files) {
    state.cpaFiles = Array.isArray(files) ? files : [];
  }

  function handleConvert() {
    try {
      var input = parseJson(document.getElementById('cpa-sub2api-input').value);
      var payload = extractSub2apiPayload(input);
      if (payload) {
        setOutput(payload, '已识别为 sub2api 数据');
        return;
      }

      var result = convertBatch(input);
      setOutput(result.output, '转换完成：' + result.output.accounts.length + ' 个账号，' + result.issues.length + ' 个跳过');
      if (result.issues.length) {
        setStatus('转换完成，但有跳过项：' + result.issues.join('；'), 'error');
      }
    } catch (error) {
      setStatus(error instanceof Error ? error.message : 'JSON 处理失败', 'error');
    }
  }

  function handleLoadIntermediate() {
    try {
      var input = parseJson(document.getElementById('cpa-sub2api-input').value);
      var payload = extractSub2apiPayload(input);
      if (!payload) {
        throw new Error('这不是 sub2api 数据：需要包含 accounts 和 proxies 数组');
      }
      setOutput(payload, 'sub2api 数据已载入并格式化');
    } catch (error) {
      setStatus(error instanceof Error ? error.message : '载入失败', 'error');
    }
  }

  function handleCopy() {
    var text = state.outputText || document.getElementById('cpa-sub2api-output').value;
    if (!text.trim()) {
      setStatus('没有可复制的输出内容', 'error');
      return;
    }
    copyText(text).then(
      function () { setStatus('已复制到剪贴板', 'success'); },
      function () { setStatus('复制失败，请手动选择输出框内容复制', 'error'); }
    );
  }

  function handleDownload() {
    var text = state.outputText || document.getElementById('cpa-sub2api-output').value;
    if (!text.trim()) {
      setStatus('没有可下载的输出内容', 'error');
      return;
    }
    var stamp = new Date().toISOString().replace(/[-:]/g, '').replace(/\.\d{3}Z$/, 'Z');
    downloadText('sub2api-bridge-' + stamp + '.json', text);
    setStatus('已开始下载 JSON', 'success');
  }

  function handleFile(event) {
    var file = event.target.files && event.target.files[0];
    if (!file) return;
    var reader = new FileReader();
    reader.onload = function () {
      document.getElementById('cpa-sub2api-input').value = String(reader.result || '');
      setStatus('已导入：' + file.name, 'success');
    };
    reader.onerror = function () {
      setStatus('文件读取失败', 'error');
    };
    reader.readAsText(file, 'utf-8');
  }

  function copyExportToClipboard(text) {
    persistExportText(text);
    return copyText(text).then(
      function () {
        setStatus('导出完成，已自动复制到剪贴板', 'success');
      },
      function () {
        setStatus('导出完成，但浏览器阻止自动复制；请点击“复制输出”手动复制', 'error');
      }
    );
  }

  function handleQuickExport() {
    var settings = getSettingsFromForm();
    if (!settings.cpaBaseUrl) {
      setStatus('请填写 CPA API Base', 'error');
      return;
    }
    setStatus('正在导出 CPA auth-files...', '');
    requestJson(cpaManagementUrl(settings, '/auth-files'), {
      method: 'GET',
      headers: getCpaHeaders(settings)
    }).then(function (data) {
      var files = data && Array.isArray(data.files) ? data.files : [];
      var names = files.map(function (file) { return file && file.name; }).filter(Boolean);
      renderCpaFileOptions(files);
      if (!names.length) throw new Error('CPA 没有可导出的 auth JSON');
      var downloadedCount = 0;
      updateExportProgressBadge(downloadedCount, names.length);
      return mapInBatches(names, CPA_AUTH_DOWNLOAD_BATCH_SIZE, function (name) {
        return downloadCpaAuthFile(settings, name).then(function (json) {
          downloadedCount += 1;
          updateExportProgressBadge(downloadedCount, names.length);
          return json;
        });
      });
    }).then(function (items) {
      var inputBox = document.getElementById('cpa-sub2api-input');
      if (inputBox) inputBox.value = formatJson(items);
      var result = convertBatch(items);
      setOutput(result.output, '导出完成：' + result.output.accounts.length + ' 个账号');
      copyExportToClipboard(state.outputText);
      if (result.issues.length) setStatus('导出完成，但有跳过项：' + result.issues.join('；'), 'error');
    }).catch(function (error) {
      setStatus(errorMessage(error, '导出失败'), 'error', errorDebug(error));
    });
  }

  function handleListCpaFiles() {
    var settings = getSettingsFromForm();
    if (!settings.cpaBaseUrl) {
      setStatus('请填写 CPA 管理 API 地址', 'error');
      return;
    }
    setStatus('正在读取 CPA auth-files...', '');
    requestJson(cpaManagementUrl(settings, '/auth-files'), {
      method: 'GET',
      headers: getCpaHeaders(settings)
    }).then(function (data) {
      var files = data && Array.isArray(data.files) ? data.files : [];
      renderCpaFileOptions(files);
      setStatus('已读取 ' + files.length + ' 个 CPA auth 文件', 'success');
    }).catch(function (error) {
      setStatus(errorMessage(error, '读取 CPA auth-files 失败'), 'error', errorDebug(error));
    });
  }

  function downloadCpaAuthFile(settings, name) {
    var url = cpaManagementUrl(settings, '/auth-files/download?name=') + encodeURIComponent(name);
    var options = {
      method: 'GET',
      headers: getCpaHeaders(settings)
    };
    return smartFetch(url, options).then(function (response) {
      return response.text().then(function (text) {
        if (!response.ok) {
          throw attachDebug(
            new Error(text || '下载 ' + name + ' 失败：HTTP ' + response.status),
            buildRequestDebug(options.method, url, options, response, text)
          );
        }
        return JSON.parse(text);
      });
    });
  }

  function mapInBatches(items, batchSize, mapper) {
    var results = new Array(items.length);
    var nextIndex = 0;
    var activeCount = 0;

    return new Promise(function (resolve, reject) {
      function runNext() {
        if (nextIndex >= items.length && activeCount === 0) {
          resolve(results);
          return;
        }
        while (activeCount < batchSize && nextIndex < items.length) {
          (function (currentIndex) {
            nextIndex += 1;
            activeCount += 1;
            Promise.resolve(mapper(items[currentIndex], currentIndex)).then(function (result) {
              results[currentIndex] = result;
              activeCount -= 1;
              runNext();
            }, reject);
          })(nextIndex);
        }
      }
      runNext();
    });
  }

  function handleDownloadAllCpa() {
    var settings = getSettingsFromForm();
    setStatus('正在下载全部 CPA 认证文件并生成 sub2api 数据...', '');
    requestJson(cpaManagementUrl(settings, '/auth-files'), {
      method: 'GET',
      headers: getCpaHeaders(settings)
    }).then(function (data) {
      var files = data && Array.isArray(data.files) ? data.files : [];
      var names = files.map(function (file) { return file && file.name; }).filter(Boolean);
      if (!names.length) throw new Error('CPA 没有可下载的 auth JSON');
      var downloadedCount = 0;
      updateExportProgressBadge(downloadedCount, names.length);
      return mapInBatches(names, CPA_AUTH_DOWNLOAD_BATCH_SIZE, function (name) {
        return downloadCpaAuthFile(settings, name).then(function (json) {
          downloadedCount += 1;
          updateExportProgressBadge(downloadedCount, names.length);
          return { name: name, json: json };
        });
      });
    }).then(function (items) {
      var cpaItems = items.map(function (item) { return item.json; });
      var inputBox = document.getElementById('cpa-sub2api-input');
      if (inputBox) inputBox.value = formatJson(cpaItems);
      var result = convertBatch(cpaItems);
      setOutput(result.output, '全部下载完成：' + result.output.accounts.length + ' 个账号');
      var zipFiles = items.map(function (item) {
        return { name: 'cpa-auth/' + item.name, content: formatJson(item.json) };
      });
      zipFiles.push({ name: 'sub2api/sub2api-data.json', content: state.outputText });
      var stamp = new Date().toISOString().replace(/[-:]/g, '').replace(/\.\d{3}Z$/, 'Z');
      openBlob('cpa-sub2api-export-' + stamp + '.zip', createZip(zipFiles));
    }).catch(function (error) {
      setStatus(errorMessage(error, '全部下载失败'), 'error', errorDebug(error));
    });
  }

  function handleUploadCpaAuth() {
    var settings = getSettingsFromForm();
    var fileInput = document.getElementById('cpa-sub2api-cpa-upload');
    var files = Array.from(fileInput.files || []);
    if (!files.length) {
      setStatus('请选择要上传到 CPA 的 JSON 文件', 'error');
      return;
    }
    var formData = new FormData();
    files.forEach(function (file) { formData.append('file', file, file.name); });
    setStatus('正在上传 CPA auth 文件...', '');
    var uploadUrl = cpaManagementUrl(settings, '/auth-files');
    var uploadOptions = {
      method: 'POST',
      headers: getCpaHeaders(settings),
      body: formData
    };
    smartFetch(uploadUrl, uploadOptions).then(function (response) {
      return response.text().then(function (text) {
        var data = {};
        try {
          data = text ? JSON.parse(text) : {};
        } catch (error) {
          data = {};
        }
        if (!response.ok) {
          throw attachDebug(
            new Error(data.error || data.message || '上传失败：HTTP ' + response.status),
            buildRequestDebug(uploadOptions.method, uploadUrl, uploadOptions, response, text)
          );
        }
        setStatus('CPA auth 文件上传完成', 'success');
        handleListCpaFiles();
      });
    }).catch(function (error) {
      setStatus(errorMessage(error, '上传 CPA auth 文件失败'), 'error', errorDebug(error));
    });
  }

  function resolveImportText() {
    var fallbackText = function () {
      return state.outputText || (document.getElementById('cpa-sub2api-output') || {}).value || '';
    };
    var fromClipboard = navigator.clipboard && navigator.clipboard.readText
      ? navigator.clipboard.readText().catch(function () { return ''; })
      : Promise.resolve('');
    return fromClipboard.then(function (text) {
      var trimmed = String(text || '').trim();
      if (trimmed) return trimmed;
      return readPersistedExportText().then(function (cachedText) {
        return String(cachedText || '').trim() || fallbackText();
      });
    });
  }

  function importToSub2apiWithText(settings, text) {
    var payload;
    try {
      payload = parseJson(text);
      var extractedPayload = extractSub2apiPayload(payload);
      if (extractedPayload) {
        payload = extractedPayload;
      } else {
        var result = convertBatch(payload);
        payload = result.output;
      }
    } catch (error) {
      setStatus(error instanceof Error ? error.message : '导入前 JSON 解析失败', 'error');
      return;
    }
    if (!settings.sub2apiBaseUrl) {
      setStatus('请填写 sub2api API 地址', 'error');
      return;
    }
    setStatus('正在导入到 sub2api...', '');
    requestJson(settings.sub2apiBaseUrl + '/admin/accounts/data', {
      method: 'POST',
      headers: getSub2apiHeaders(settings, true),
      body: JSON.stringify({
        data: payload,
        skip_default_group_bind: settings.skipDefaultGroupBind
      })
    }).then(function (data) {
      updateDataBadge(payload);
      setStatus('sub2api 导入完成：' + formatImportResult(data), 'success');
    }).catch(function (error) {
      setStatus(errorMessage(error, 'sub2api 导入失败'), 'error', errorDebug(error));
    });
  }

  function handleImportToSub2api() {
    var settings = getSettingsFromForm();
    resolveImportText().then(function (text) {
      importToSub2apiWithText(settings, text);
    });
  }

  function formatImportResult(data) {
    if (!data || typeof data !== 'object') return '已提交';
    return [
      '账号创建 ' + Number(data.account_created || 0),
      '账号失败 ' + Number(data.account_failed || 0),
      '代理创建 ' + Number(data.proxy_created || 0),
      '代理复用 ' + Number(data.proxy_reused || 0),
      '代理失败 ' + Number(data.proxy_failed || 0)
    ].join('，');
  }

  function createStyle() {
    var style = document.createElement('style');
    style.textContent = [
      '#cpa-sub2api-bridge{position:fixed;right:18px;bottom:18px;z-index:2147483647;font-family:Arial,"Microsoft YaHei",sans-serif;color:#172033}',
      '#cpa-sub2api-bridge *{box-sizing:border-box}',
      '#cpa-sub2api-toggle{border:0;border-radius:999px;background:#2454ff;color:#fff;padding:10px 14px;font-size:13px;font-weight:700;box-shadow:0 10px 28px rgba(36,84,255,.35);cursor:pointer}',
      '#cpa-sub2api-panel{display:none;width:520px;max-width:calc(100vw - 36px);max-height:calc(100vh - 90px);overflow:auto;margin-bottom:10px;padding:14px;border:1px solid #d8deea;border-radius:16px;background:#fff;box-shadow:0 18px 48px rgba(15,23,42,.22)}',
      '#cpa-sub2api-bridge.open #cpa-sub2api-panel{display:block}',
      '#cpa-sub2api-panel h2{margin:0 0 6px;font-size:16px}',
      '#cpa-sub2api-panel h3{margin:12px 0 8px;font-size:13px}',
      '#cpa-sub2api-panel p{margin:0 0 10px;color:#5c667a;font-size:12px;line-height:1.5}',
      '#cpa-sub2api-status{margin:8px 0 10px;padding:8px 10px;border-radius:10px;background:#f8fafc;color:#475569;font-size:13px;line-height:1.45;min-height:18px}',
      '#cpa-sub2api-status.error{background:#fef2f2;color:#dc2626}',
      '#cpa-sub2api-status.success{background:#f0fdf4;color:#15803d}',
      '#cpa-sub2api-primary-actions{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:12px 0}',
      '#cpa-sub2api-primary-actions button{font-size:18px!important;padding:16px 12px!important;border-radius:14px!important}',
      '#cpa-sub2api-data-badge{display:block;margin:8px 0 6px;padding:8px 10px;border-radius:10px;background:#eef2ff;color:#26336f;font-size:13px;font-weight:700;text-align:center}',
      '#cpa-sub2api-error-detail{display:block;min-height:18px;margin:0 0 6px;color:#64748b;font-size:12px;line-height:1.45;word-break:break-all}',
      '#cpa-sub2api-error-detail.error{padding:7px 9px;border-radius:9px;background:#fef2f2;color:#dc2626}',
      '#cpa-sub2api-debug-block{display:none;margin:0 0 12px}',
      '#cpa-sub2api-debug-block summary{padding:7px 9px;border-radius:9px;background:#fff7ed;color:#9a3412;font-size:12px;font-weight:700}',
      '#cpa-sub2api-debug-text{max-height:180px;overflow:auto;margin:6px 0 0;padding:8px;border:1px solid #fed7aa;border-radius:9px;background:#fff7ed;color:#7c2d12;font:11px/1.45 Consolas,monospace;white-space:pre-wrap;word-break:break-all}',
      '.cpa-sub2api-separator{height:1px;background:#e2e8f0;margin:14px 0}',
      '.cpa-sub2api-section-title{margin:12px 0 8px;font-size:13px;font-weight:800;color:#334155}',
      '#cpa-sub2api-panel details{margin-top:8px}',
      '#cpa-sub2api-panel summary{cursor:pointer;user-select:none;list-style:none}',
      '#cpa-sub2api-panel summary::-webkit-details-marker{display:none}',
      '#cpa-sub2api-panel input,#cpa-sub2api-panel select,#cpa-sub2api-panel textarea{width:100%;border:1px solid #cad2e1;border-radius:10px;padding:8px;font:12px/1.45 Arial,"Microsoft YaHei",sans-serif;color:#172033;background:#f8fafc}',
      '#cpa-sub2api-panel textarea{min-height:118px;resize:vertical;font-family:Consolas,monospace}',
      '#cpa-sub2api-panel select{height:86px}',
      '#cpa-sub2api-panel label{display:block;margin:8px 0 5px;font-size:12px;font-weight:700}',
      '#cpa-sub2api-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}',
      '#cpa-sub2api-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:10px 0}',
      '#cpa-sub2api-panel button,#cpa-sub2api-file-label,#cpa-sub2api-cpa-upload-label{border:1px solid #cbd5e1;border-radius:10px;background:#f8fafc;color:#172033;padding:8px 10px;font-size:12px;font-weight:700;text-align:center;cursor:pointer}',
      '#cpa-sub2api-panel button.primary{background:#2454ff;border-color:#2454ff;color:#fff}',
      '#cpa-sub2api-file,#cpa-sub2api-cpa-upload{display:none}',
      '#cpa-sub2api-status.error{color:#dc2626}',
      '#cpa-sub2api-status.success{color:#15803d}',
      '.cpa-sub2api-row{display:flex;align-items:center;gap:8px;margin:8px 0;font-size:12px}',
      '.cpa-sub2api-row input[type="checkbox"]{width:auto}'
    ].join('');
    document.head.appendChild(style);
  }

  function createPanel() {
    var root = document.createElement('div');
    root.id = 'cpa-sub2api-bridge';
    root.innerHTML = [
      '<div id="cpa-sub2api-panel">',
      '<h2>CPA / sub2api 桥接</h2>',
      '<div id="cpa-sub2api-status"></div>',
      '<p>一键从当前 CPA 导出认证文件和 sub2api 数据，再导入到 sub2api。</p>',
      '<div id="cpa-sub2api-primary-actions">',
      '<button class="primary" type="button" id="cpa-sub2api-quick-export">导出</button>',
      '<button class="primary" type="button" id="cpa-sub2api-import-sub">导入</button>',
      '</div>',
      '<span id="cpa-sub2api-data-badge">当前数据：0 个账号 / 0 个代理</span>',
      '<div id="cpa-sub2api-error-detail"></div>',
      '<details id="cpa-sub2api-debug-block"><summary>完整请求 / 响应详情</summary><pre id="cpa-sub2api-debug-text"></pre></details>',
      '<div class="cpa-sub2api-separator"></div>',
      '<div class="cpa-sub2api-section-title">配置区</div>',
      '<label for="cpa-sub2api-cpa-base">CPA API Base</label>',
      '<input id="cpa-sub2api-cpa-base" placeholder="当前页面 origin，例如 https://cpa.example.com">',
      '<label for="cpa-sub2api-cpa-key">CPA Management Key</label>',
      '<input id="cpa-sub2api-cpa-key" type="password" placeholder="Authorization Bearer / X-Management-Key">',
      '<label for="cpa-sub2api-sub-base">sub2api API Base</label>',
      '<input id="cpa-sub2api-sub-base" placeholder="https://你的-sub2api/api/v1">',
      '<label for="cpa-sub2api-sub-token">sub2api JWT Token</label>',
      '<input id="cpa-sub2api-sub-token" type="password" placeholder="默认读取 localStorage.auth_token">',
      '<div class="cpa-sub2api-row"><input id="cpa-sub2api-skip-group" type="checkbox"><label for="cpa-sub2api-skip-group">导入时跳过默认分组绑定</label></div>',
      '<div class="cpa-sub2api-separator"></div>',
      '<details id="cpa-sub2api-advanced">',
      '<summary class="cpa-sub2api-section-title">功能区</summary>',
      '<div id="cpa-sub2api-actions">',
      '<button type="button" id="cpa-sub2api-download-cpa" class="primary">下载</button>',
      '<label id="cpa-sub2api-cpa-upload-label" for="cpa-sub2api-cpa-upload">选择文件上传</label>',
      '<input id="cpa-sub2api-cpa-upload" type="file" multiple accept=".json,application/json,.zip,application/zip">',
      '<button type="button" id="cpa-sub2api-upload-cpa">上传</button>',
      '</div>',
      '<textarea id="cpa-sub2api-output" readonly placeholder="sub2api 数据预览" style="display:none"></textarea>',
      '</details>',
      '</div>',
      '<button id="cpa-sub2api-toggle" type="button">CPA ⇄ sub2api</button>'
    ].join('');

    document.body.appendChild(root);
    applySettingsToForm();
    document.getElementById('cpa-sub2api-toggle').addEventListener('click', function () {
      root.classList.toggle('open');
    });
    document.getElementById('cpa-sub2api-quick-export').addEventListener('click', handleQuickExport);
    document.getElementById('cpa-sub2api-download-cpa').addEventListener('click', handleDownloadAllCpa);
    document.getElementById('cpa-sub2api-upload-cpa').addEventListener('click', handleUploadCpaAuth);
    document.getElementById('cpa-sub2api-import-sub').addEventListener('click', handleImportToSub2api);
  }

  if (document.body) {
    createStyle();
    createPanel();
  }
})();