export interface ImageProviderSpec {
  id: number;
  name: string;
  displayName: string;
  envVar: string | null;
  requiresKey: boolean;
}

/**
 * Metadata-only declarative registry for image search providers.
 * Pure metadata container with ZERO dependencies on Config to prevent circular imports.
 * Mapped from Python `image_search/providers/provider_registry.py` ImageProviderRegistry.
 */
export class ImageProviderRegistry {
  private static readonly SPECS: Record<string, ImageProviderSpec> = {
    duckduckgo: {
      id: 1,
      name: "duckduckgo",
      displayName: "DuckDuckGo",
      envVar: null,
      requiresKey: false,
    },
    bing: {
      id: 2,
      name: "bing",
      displayName: "Bing",
      envVar: null,
      requiresKey: false,
    },
    serpapi: {
      id: 3,
      name: "serpapi",
      displayName: "SerpApi",
      envVar: "SERPAPI_KEYS",
      requiresKey: true,
    },
    pexels: {
      id: 4,
      name: "pexels",
      displayName: "Pexels",
      envVar: "PEXELS_KEYS",
      requiresKey: true,
    },
  };

  /**
   * Retrieve list of all registered ImageProviderSpec objects.
   */
  public static getAllSpecs(): ImageProviderSpec[] {
    return Object.values(this.SPECS);
  }

  /**
   * Compatibility alias for Python parity.
   */
  public static get_all_specs(): ImageProviderSpec[] {
    return ImageProviderRegistry.getAllSpecs();
  }

  /**
   * Static lookup for ImageProviderSpec by numeric ID.
   */
  public static getById(id: number): ImageProviderSpec | undefined {
    return Object.values(this.SPECS).find((s) => s.id === id);
  }

  public static get_by_id(id: number): ImageProviderSpec | undefined {
    return ImageProviderRegistry.getById(id);
  }

  /**
   * Retrieve ImageProviderSpec by case-insensitive provider name.
   */
  public static getSpec(name: string): ImageProviderSpec | undefined {
    return this.SPECS[name.toLowerCase().trim()];
  }
}

export interface ImageProviderSpec {
  id: number;
  name: string;
  displayName: string;
  envVar: string | null;
  requiresKey: boolean;
}

/**
 * Metadata-only declarative registry for image search providers.
 * Pure metadata container with ZERO dependencies on Config to prevent circular imports.
 * Mapped from Python `image_search/providers/provider_registry.py` ImageProviderRegistry.
 */
export class ImageProviderRegistry {
  private static readonly SPECS: Record<string, ImageProviderSpec> = {
    duckduckgo: {
      id: 1,
      name: "duckduckgo",
      displayName: "DuckDuckGo",
      envVar: null,
      requiresKey: false,
    },
    bing: {
      id: 2,
      name: "bing",
      displayName: "Bing",
      envVar: null,
      requiresKey: false,
    },
    serpapi: {
      id: 3,
      name: "serpapi",
      displayName: "SerpApi",
      envVar: "SERPAPI_KEYS",
      requiresKey: true,
    },
    pexels: {
      id: 4,
      name: "pexels",
      displayName: "Pexels",
      envVar: "PEXELS_KEYS",
      requiresKey: true,
    },
  };

  /**
   * Retrieve list of all registered ImageProviderSpec objects.
   */
  public static getAllSpecs(): ImageProviderSpec[] {
    return Object.values(this.SPECS);
  }

  /**
   * Compatibility alias for Python parity.
   */
  public static get_all_specs(): ImageProviderSpec[] {
    return ImageProviderRegistry.getAllSpecs();
  }

  /**
   * Static lookup for ImageProviderSpec by numeric ID.
   */
  public static getById(id: number): ImageProviderSpec | undefined {
    return Object.values(this.SPECS).find((s) => s.id === id);
  }

  public static get_by_id(id: number): ImageProviderSpec | undefined {
    return ImageProviderRegistry.getById(id);
  }

  /**
   * Retrieve ImageProviderSpec by case-insensitive provider name.
   */
  public static getSpec(name: string): ImageProviderSpec | undefined {
    return this.SPECS[name.toLowerCase().trim()];
  }
}