import type { TStatusType, TCheckResultStatus, TCheckLastResult } from '../types.js';

// ============================================
// Execution Timing (used by check runners)
// ============================================

export interface TExecutionTiming {
  plannedTime: number;
  timeStarted: number;
  timeEnded: number;
  duration: number;
}

// Re-export for backward compatibility
export type { TCheckResultStatus };

// ============================================
// Check Configuration Base Interface
// ============================================

/**
 * Base interface for all check configurations.
 * Extended by discriminated variants.
 */
export interface ICheckBase {
  id: string;
  name: string;
  description?: string;
  enabled: boolean;
  intervalMs?: number;
  lastRun?: number;
  lastResult?: TCheckLastResult;
}

// ============================================
// Discriminated Check Variants (Configuration)
// ============================================

/**
 * Assumption check - assumes a status without active verification
 */
export interface IAssumptionCheckConfig extends ICheckBase {
  checkType: 'assumption';
  assumedStatus: TStatusType;
  domain?: string;
  title?: string;
  statusCode?: string;
}

/**
 * Function check - calls a URL and validates response
 */
export interface IFunctionCheckConfig extends ICheckBase {
  checkType: 'function';
  functionUrl: string;
  domain?: string;
  expectedStatusCode?: number;
  timeoutMs?: number;
  headers?: Record<string, string>;
}

/**
 * PWA check - validates Progressive Web App criteria
 */
export interface IPwaCheckConfig extends ICheckBase {
  checkType: 'pwa';
  targetUrl: string;
  domain?: string;
  lighthouseThreshold?: number;
  categories?: ('performance' | 'accessibility' | 'best-practices' | 'seo')[];
}

/**
 * PageRank check - validates search engine ranking
 */
export interface IPageRankCheckConfig extends ICheckBase {
  checkType: 'pagerank';
  targetUrl: string;
  domain?: string;
  searchTerm: string;
  minimumRank?: number;
  checkGoogle?: boolean;
  checkBing?: boolean;
  googleMinRank?: number;
  bingMinRank?: number;
}

// ============================================
// Union Type (for UI and generic handling)
// ============================================

/**
 * Union of all check configuration types.
 * Use `checkType` discriminant for type narrowing.
 *
 * @example
 * function handleCheck(check: TCheckConfig) {
 *   if (check.checkType === 'function') {
 *     console.log(check.functionUrl); // TypeScript knows this exists
 *   }
 * }
 */
export type TCheckConfig =
  | IAssumptionCheckConfig
  | IFunctionCheckConfig
  | IPwaCheckConfig
  | IPageRankCheckConfig;

// ============================================
// Execution Interfaces (Runtime Data)
// ============================================

// Keep existing execution interfaces for backward compatibility
export * from './assumption.check.js';
export * from './function.check.js';
export * from './pagerank.check.js';
export * from './pwa.check.js';