/**
 * Shared Types for Novel Reader Scraping Service
 * 
 * Single source of truth for all API types used by both service and client
 */

// ===== Core Data Models =====

export interface Review {
  username: string;
  rating: number;
  progress?: string;
  date: string;
  content: string;
  likes: number;
  spoilers?: Array<{ position: number; content: string }>;
}

export interface NovelDetails extends NovelSearchResult {
  alternativeTitles?: string[];
  author?: string;
  artist?: string;
  year?: number;
  status?: string;
  licensed?: boolean;
  englishPublisher?: string;
  tags?: string[];
  reviews?: Review[];
  chapterList?: Array<{
    title: string;
    url: string;
    releaseDate?: string;
    group?: string;
  }>;
}

export interface Chapter {
  title: string;
  url: string;
  chapterNumber?: number;
  publishedAt?: string;
}

export interface ChapterData {
  title: string;
  content: string;
  navigation: {
    previousChapter?: string;
    nextChapter?: string;
  };
}

export interface NovelSearchResult {
  title: string;
  url: string;
  coverUrl?: string;
  rating?: number;
  chapters?: number;
  status?: string;
  genres?: string[];
  description?: string;
}

export interface SiteConfiguration {
  name: string;
  hostname: string;
  configuration: {
    titleSelector: string;
    contentSelector: string;
    contentParagraphSelector: string;
    navigationSelectors: {
      previousChapter: string;
      nextChapter: string;
    };
  };
  status: 'active' | 'inactive';
  useProxy: boolean;
}

// ===== API Response Types =====

export interface ScrapingServiceResponse<T> {
  results: T;
}

export interface PaginatedResponse<T> {
  results: T[];
  pagination: {
    page: number;
    total: number;
    hasNext: boolean;
  };
}

export interface ApiError {
  error: {
    code: string;
    message: string;
  };
}

// ===== Health Management Types =====

/**
 * Service health status levels
 */
export type ServiceStatus = 'healthy' | 'degraded' | 'unhealthy';

/**
 * Browser manager health status
 */
export interface BrowserHealthStatus {
  status: ServiceStatus;
  activeInstances: number;
  availableInstances: number;
  totalInstances: number;
  maxInstances: number;
  error?: string;
}

/**
 * Proxy provider breakdown statistics
 */
export interface ProxyProviderBreakdown {
  total: number;
  healthy: number;
  unhealthy: number;
}

/**
 * Comprehensive proxy health status
 */
export interface ProxyHealthStatus {
  status: ServiceStatus;
  pool: {
    enabled: boolean;
    totalProxies: number;
    healthyProxies: number;
    unhealthyProxies: number;
    healthyPercentage: number;
    hasEnoughHealthyProxies: boolean;
  };
  providers: Record<'getproxylist' | 'proxyscrape' | 'geonode', ProxyProviderBreakdown>;
  schedule: {
    lastRefresh: string;
    nextRefresh: string;
    lastHealthCheck: string;
    nextHealthCheck: string;
  };
  recommendations: string[];
  error?: string;
}

/**
 * Complete health overview for dashboards
 */
export interface HealthOverview {
  timestamp: string;
  serviceStatus: {
    isOnline: boolean;
  };
  overall: {
    status: ServiceStatus;
  };
  browser: BrowserHealthStatus | null;
  proxy: ProxyHealthStatus | null;
  errors: {
    overall?: string;
    proxy?: string;
    browser?: string;
  };
}

// ===== Health Status Types =====

export interface ProxyPoolInfo {
  enabled: boolean;
  totalProxies: number;
  healthyProxies: number;
  unhealthyProxies: number;
  healthyPercentage: number;
  hasEnoughHealthyProxies: boolean;
}

export interface HealthStatus {
  status: 'healthy' | 'degraded' | 'unhealthy';
  timestamp: string;
  version: string;
  browser: {
    activeInstances: number;
    availableInstances: number;
    totalInstances: number;
    maxInstances: number;
  };
  proxy: ProxyPoolInfo;
}

// ===== Request/Response Schemas =====

export interface SearchNovelsRequest {
  query: string;
  page?: number;
  limit?: number;
}

export interface ScrapeChapterRequest {
  url: string;
  customConfig?: Partial<SiteConfiguration['configuration']>;
}

export interface BatchScrapeRequest {
  urls: string[];
  maxConcurrent?: number;
}

export interface ValidateUrlRequest {
  url: string;
}

export interface TestSiteConfigRequest {
  hostname: string;
  testUrl: string;
}

// ===== Database Scraper Types =====

export interface DatabaseInfo {
  id: string;
  name: string;
  description: string;
  supportedOperations: ('search' | 'latest' | 'popular' | 'novel')[];
  status: 'active' | 'inactive';
}

export interface LatestNovelsRequest {
  page?: number;
  limit?: number;
}

export interface PopularNovelsRequest {
  period?: 'day' | 'week' | 'month' | 'all';
  page?: number;
  limit?: number;
}

export interface NovelDetailsRequest {
  url: string;
  includeChapters?: boolean;
}

// ===== Error Types =====

export type ErrorCode = 
  | 'INTERNAL_SERVER_ERROR'
  | 'NOT_FOUND'
  | 'BAD_REQUEST'
  | 'UNSUPPORTED_SITE'
  | 'CONTENT_NOT_FOUND'
  | 'BROWSER_ERROR'
  | 'TIMEOUT_ERROR'
  | 'RATE_LIMIT_EXCEEDED';

export type ErrorType =
  | 'SCRAPING_ERROR'
  | 'CHAPTER_NOT_FOUND'
  | 'CONTENT_NOT_FOUND'
  | 'UNSUPPORTED_SITE'
  | 'BROWSER_ERROR'
  | 'TIMEOUT_ERROR'
  | 'VALIDATION_ERROR'
  | 'RATE_LIMIT_ERROR';

// ===== Utility Types =====

export type DatabaseId = 'novelupdates';

export type SupportedOperation = 'search' | 'latest' | 'popular' | 'novel';

// ===== API Route Definitions =====

export interface ApiRoutes {
  databases: {
    list: {
      method: 'GET';
      path: '/api/v1/databases';
      response: ScrapingServiceResponse<DatabaseInfo[]>;
    };
    search: {
      method: 'GET';
      path: '/api/v1/databases/:id/search';
      params: { id: DatabaseId };
      query: SearchNovelsRequest;
      response: PaginatedResponse<NovelSearchResult>;
    };
    latest: {
      method: 'GET';
      path: '/api/v1/databases/:id/latest';
      params: { id: DatabaseId };
      query: LatestNovelsRequest;
      response: PaginatedResponse<NovelSearchResult>;
    };
    popular: {
      method: 'GET';
      path: '/api/v1/databases/:id/popular';
      params: { id: DatabaseId };
      query: PopularNovelsRequest;
      response: PaginatedResponse<NovelSearchResult>;
    };
    novel: {
      method: 'GET';
      path: '/api/v1/databases/:id/novel';
      params: { id: DatabaseId };
      query: NovelDetailsRequest;
      response: ScrapingServiceResponse<NovelDetails>;
    };
  };
  chapters: {
    scrape: {
      method: 'POST';
      path: '/api/v1/chapters/scrape';
      body: ScrapeChapterRequest;
      response: ScrapingServiceResponse<ChapterData>;
    };
    batch: {
      method: 'POST';
      path: '/api/v1/chapters/batch';
      body: BatchScrapeRequest;
      response: ScrapingServiceResponse<ChapterData[]>;
    };
    validateUrl: {
      method: 'GET';
      path: '/api/v1/chapters/validate-url';
      query: ValidateUrlRequest;
      response: ScrapingServiceResponse<{ supported: boolean; hostname: string }>;
    };
  };
  sites: {
    list: {
      method: 'GET';
      path: '/api/v1/sites';
      response: ScrapingServiceResponse<SiteConfiguration[]>;
    };
    get: {
      method: 'GET';
      path: '/api/v1/sites/:hostname';
      params: { hostname: string };
      response: ScrapingServiceResponse<SiteConfiguration>;
    };
    update: {
      method: 'PUT';
      path: '/api/v1/sites/:hostname';
      params: { hostname: string };
      body: Partial<SiteConfiguration>;
      response: ScrapingServiceResponse<SiteConfiguration>;
    };
    test: {
      method: 'POST';
      path: '/api/v1/sites/:hostname/test';
      params: { hostname: string };
      body: TestSiteConfigRequest;
      response: ScrapingServiceResponse<{ success: boolean; data?: ChapterData }>;
    };
  };
  health: {
    overall: {
      method: 'GET';
      path: '/api/v1/health';
      response: HealthStatus;
    };
    overview: {
      method: 'GET';
      path: '/api/v1/health/overview';
      response: HealthOverview;
    };
    proxy: {
      method: 'GET';
      path: '/api/v1/health/proxy';
      response: ProxyHealthStatus;
    };
    browser: {
      method: 'GET';
      path: '/api/v1/health/browser';
      response: BrowserHealthStatus;
    };
  };
}