import type { ConfigContext, ExpoConfig } from 'expo/config';

import zh from './locales/zh.json';
import en from './locales/en.json';

type PermissionKey =
  | 'microphone'
  | 'photos'
  | 'camera'
  | 'microphoneForVideo'
  | 'faceId';

type LocaleMessages = {
  permissions?: Partial<Record<PermissionKey, string>>;
};

type PrivacyAccessedAPIType = {
  NSPrivacyAccessedAPIType: string;
  NSPrivacyAccessedAPITypeReasons: string[];
};

const LOCALES: Record<string, LocaleMessages> = {
  zh,
  en,
};

const SUPPORTED_LOCALES = ['zh', 'en'] as const;
const PRIMARY_LOCALE = process.env.EXPO_PUBLIC_PRIMARY_LOCALE ?? 'zh';

const WEB_SQLITE_HEADERS = {
  'Cross-Origin-Embedder-Policy': 'credentialless',
  'Cross-Origin-Opener-Policy': 'same-origin',
} as const;

const PERMISSION_FALLBACKS: Record<PermissionKey, string> = {
  microphone: 'Allow $(PRODUCT_NAME) to access your microphone.',
  photos: 'Allow $(PRODUCT_NAME) to access your photos.',
  camera: 'Allow $(PRODUCT_NAME) to access your camera.',
  microphoneForVideo: 'Allow $(PRODUCT_NAME) to access your microphone.',
  faceId: 'Allow $(PRODUCT_NAME) to access Face ID.',
};

/**
 * iOS privacy manifest required-reason APIs.
 *
 * These values are aggregated from the PrivacyInfo.xcprivacy files shipped by the
 * Expo native modules currently used in this app, because Apple may not always
 * correctly parse all static CocoaPods dependency manifests during submission.
 *
 * Sources checked in node_modules:
 * - expo-task-manager
 * - expo-media-library
 * - expo-localization
 * - expo-file-system
 * - expo-system-ui
 * - expo-device
 * - expo-constants
 */
const REQUIRED_PRIVACY_ACCESSED_API_TYPES: PrivacyAccessedAPIType[] = [
  {
    NSPrivacyAccessedAPIType: 'NSPrivacyAccessedAPICategoryUserDefaults',
    NSPrivacyAccessedAPITypeReasons: ['CA92.1'],
  },
  {
    NSPrivacyAccessedAPIType: 'NSPrivacyAccessedAPICategoryFileTimestamp',
    NSPrivacyAccessedAPITypeReasons: ['0A2A.1', '3B52.1'],
  },
  {
    NSPrivacyAccessedAPIType: 'NSPrivacyAccessedAPICategoryDiskSpace',
    NSPrivacyAccessedAPITypeReasons: ['E174.1', '85F4.1'],
  },
  {
    NSPrivacyAccessedAPIType: 'NSPrivacyAccessedAPICategorySystemBootTime',
    NSPrivacyAccessedAPITypeReasons: ['35F9.1'],
  },
];

const localePermissions = LOCALES[PRIMARY_LOCALE]?.permissions ?? {};

function getPermissionMessage(key: PermissionKey): string {
  return localePermissions[key] ?? PERMISSION_FALLBACKS[key];
}

function mergePrivacyAccessedApiTypes(
  existing: PrivacyAccessedAPIType[] = [],
  required: PrivacyAccessedAPIType[] = [],
): PrivacyAccessedAPIType[] {
  const merged = new Map<string, Set<string>>();

  for (const item of [...existing, ...required]) {
    const reasons =
      merged.get(item.NSPrivacyAccessedAPIType) ?? new Set<string>();
    for (const reason of item.NSPrivacyAccessedAPITypeReasons) {
      reasons.add(reason);
    }
    merged.set(item.NSPrivacyAccessedAPIType, reasons);
  }

  return Array.from(merged.entries()).map(([apiType, reasons]) => ({
    NSPrivacyAccessedAPIType: apiType,
    NSPrivacyAccessedAPITypeReasons: Array.from(reasons),
  }));
}
export default ({ config }: ConfigContext): ExpoConfig => {
  const existingPrivacyAccessedApiTypes = (config?.ios?.privacyManifests
    ?.NSPrivacyAccessedAPITypes ?? []) as PrivacyAccessedAPIType[];

  return {
    ...config,
    name: 'app-expo',
    slug: 'app-expo',
    version: '1.0.0',
    orientation: 'portrait',
    icon: './assets/images/icon.png',
    scheme: 'appexpo',
    userInterfaceStyle: 'automatic',
    ios: {
      ...config?.ios,
      icon: './assets/expo.icon',
      bundleIdentifier: 'com.anonymous.app-expo',
      config: {
        usesNonExemptEncryption: false,
      },
      infoPlist: {
        ...config?.ios?.infoPlist,
        CFBundleAllowMixedLocalizations: true,
      },
      privacyManifests: {
        ...config?.ios?.privacyManifests,
        NSPrivacyAccessedAPITypes: mergePrivacyAccessedApiTypes(
          existingPrivacyAccessedApiTypes,
          REQUIRED_PRIVACY_ACCESSED_API_TYPES,
        ),
      },
    },
    android: {
      ...config?.android,
      // Reverse-DNS; no hyphens (Android package name rules). Matches iOS bundle id intent.
      package: 'com.anonymous.appexpo',
      adaptiveIcon: {
        backgroundColor: '#E6F4FE',
        foregroundImage: './assets/images/android-icon-foreground.png',
        backgroundImage: './assets/images/android-icon-background.png',
        monochromeImage: './assets/images/android-icon-monochrome.png',
      },
      predictiveBackGestureEnabled: false,
    },
    web: {
      ...config?.web,
      bundler: 'metro',
      output: 'static',
      favicon: './assets/images/favicon.png',
    },
    plugins: [
      // CI/local release: android/app/keystore.properties + store file → release signing; -PversionName/-PversionCode
      './plugins/withAndroidReleaseSigning',
      // --- Web: Required for expo-sqlite on web ---
      // COEP/COOP headers enable SharedArrayBuffer in browsers.
      // Also configure metro.config.js (wasm + dev server headers).
      [
        'expo-router',
        {
          headers: WEB_SQLITE_HEADERS,
        },
      ],
      [
        'expo-splash-screen',
        {
          backgroundColor: '#208AEF',
          android: {
            image: './assets/images/splash-icon.png',
            imageWidth: 76,
          },
        },
      ],
      [
        'expo-localization',
        {
          supportedLocales: {
            ios: SUPPORTED_LOCALES,
            android: SUPPORTED_LOCALES,
          },
        },
      ],
      'expo-asset',
      [
        'expo-audio',
        {
          microphonePermission: getPermissionMessage('microphone'),
        },
      ],
      [
        'expo-image-picker',
        {
          photosPermission: getPermissionMessage('photos'),
          cameraPermission: getPermissionMessage('camera'),
          microphonePermission: getPermissionMessage('microphoneForVideo'),
        },
      ],
      'expo-image',
      'expo-sqlite',
      [
        'expo-secure-store',
        {
          configureAndroidBackup: true,
          faceIDPermission: getPermissionMessage('faceId'),
        },
      ],
      'expo-font',
    ],
    locales: {
      zh: './locales/zh.json',
      en: './locales/en.json',
    },
    extra: {
      ...config?.extra,
      supportsRTL: true,
    },
    experiments: {
      ...config?.experiments,
      typedRoutes: true,
      reactCompiler: true,
    },
  };
};