import { test } from '@playwright/test';
import { testLogger } from '../shared/utils/test-logger';
import { testDataGenerator, UserData, RoleData, MenuData } from './test-data';

export type DataStrategy = 'real' | 'mock' | 'hybrid';

export interface DataStrategyConfig {
  strategy: DataStrategy;
  mockEnabled: boolean;
  realDataEnabled: boolean;
  autoCleanup: boolean;
}

export interface DataSnapshot {
  name: string;
  timestamp: number;
  data: Map<string, any[]>;
}

export class DataStrategyManager {
  private strategy: DataStrategy;
  private config: DataStrategyConfig;
  private snapshots: Map<string, DataSnapshot> = new Map();
  private testData: Map<string, any[]> = new Map();

  constructor(config?: Partial<DataStrategyConfig>) {
    this.config = {
      strategy: 'hybrid',
      mockEnabled: true,
      realDataEnabled: true,
      autoCleanup: true,
      ...config
    };
    this.strategy = this.config.strategy;
    
    testLogger.info(`DataStrategyManager initialized with strategy: ${this.strategy}`);
  }

  setStrategy(strategy: DataStrategy): void {
    this.strategy = strategy;
    this.config.strategy = strategy;
    testLogger.info(`Data strategy changed to: ${strategy}`);
  }

  getStrategy(): DataStrategy {
    return this.strategy;
  }

  getConfig(): DataStrategyConfig {
    return { ...this.config };
  }

  selectDataSource(testTags: string[]): DataStrategy {
    testLogger.debug(`Selecting data source for tags: ${testTags.join(', ')}`);

    if (this.config.strategy === 'real') {
      testLogger.debug('Using real data strategy (forced)');
      return 'real';
    }

    if (this.config.strategy === 'mock') {
      testLogger.debug('Using mock data strategy (forced)');
      return 'mock';
    }

    if (this.config.strategy === 'hybrid') {
      return this.selectHybridDataSource(testTags);
    }

    return 'mock';
  }

  private selectHybridDataSource(testTags: string[]): DataStrategy {
    const hasSmokeTag = testTags.includes('@smoke');
    const hasRegressionTag = testTags.includes('@regression');
    const hasFullTag = testTags.includes('@full');
    const hasCriticalTag = testTags.includes('@critical');

    if (hasCriticalTag) {
      testLogger.debug('Hybrid strategy: Using real data for @critical tests');
      return 'real';
    }

    if (hasFullTag) {
      testLogger.debug('Hybrid strategy: Using real data for @full tests');
      return 'real';
    }

    if (hasRegressionTag) {
      testLogger.debug('Hybrid strategy: Using hybrid data for @regression tests');
      return 'hybrid';
    }

    if (hasSmokeTag) {
      testLogger.debug('Hybrid strategy: Using mock data for @smoke tests');
      return 'mock';
    }

    testLogger.debug('Hybrid strategy: Defaulting to mock data');
    return 'mock';
  }

  async createData(dataType: string, data: any, testTags: string[] = []): Promise<any> {
    const dataSource = this.selectDataSource(testTags);
    testLogger.info(`Creating ${dataType} using ${dataSource} data source`);

    if (dataSource === 'mock') {
      return this.createMockData(dataType, data);
    }

    if (dataSource === 'real') {
      return this.createRealData(dataType, data);
    }

    return this.createHybridData(dataType, data);
  }

  private createMockData(dataType: string, data: any): any {
    testLogger.debug(`Creating mock data for ${dataType}`);

    switch (dataType) {
      case 'user':
        return testDataGenerator.generateUserData(data);
      case 'role':
        return testDataGenerator.generateRoleData(data);
      case 'menu':
        return testDataGenerator.generateMenuData(data);
      case 'permission':
        return testDataGenerator.generatePermissionData(data);
      default:
        return data;
    }
  }

  private createRealData(dataType: string, data: any): any {
    testLogger.debug(`Creating real data for ${dataType} (requires API connection)`);
    
    return data;
  }

  private createHybridData(dataType: string, data: any): any {
    testLogger.debug(`Creating hybrid data for ${dataType}`);

    const mockData = this.createMockData(dataType, data);
    const realData = this.createRealData(dataType, data);

    return {
      ...mockData,
      _dataSource: 'hybrid',
      _mockData: mockData,
      _realData: realData
    };
  }

  async cleanupData(dataType: string, dataId: string | number): Promise<void> {
    testLogger.info(`Cleaning up ${dataType} with id: ${dataId}`);

    if (this.config.autoCleanup) {
      this.removeTestData(dataType, dataId);
    }
  }

  async cleanupAll(): Promise<void> {
    testLogger.info('Cleaning up all test data');

    this.testData.clear();
    this.snapshots.clear();

    testLogger.info('All test data cleaned up');
  }

  async createSnapshot(snapshotName: string): Promise<DataSnapshot> {
    testLogger.info(`Creating snapshot: ${snapshotName}`);

    const snapshot: DataSnapshot = {
      name: snapshotName,
      timestamp: Date.now(),
      data: new Map(this.testData)
    };

    this.snapshots.set(snapshotName, snapshot);
    testLogger.info(`Snapshot created: ${snapshotName} at ${new Date(snapshot.timestamp).toISOString()}`);

    return snapshot;
  }

  async rollbackToSnapshot(snapshotName: string): Promise<void> {
    testLogger.info(`Rolling back to snapshot: ${snapshotName}`);

    const snapshot = this.snapshots.get(snapshotName);
    if (!snapshot) {
      throw new Error(`Snapshot not found: ${snapshotName}`);
    }

    this.testData = new Map(snapshot.data);
    testLogger.info(`Rolled back to snapshot: ${snapshotName}`);
  }

  private addTestData(dataType: string, data: any): void {
    if (!this.testData.has(dataType)) {
      this.testData.set(dataType, []);
    }
    this.testData.get(dataType)!.push(data);
  }

  private removeTestData(dataType: string, dataId: string | number): void {
    const items = this.testData.get(dataType);
    if (items) {
      const index = items.findIndex(item => item.id === dataId);
      if (index !== -1) {
        items.splice(index, 1);
      }
    }
  }

  getTestData(dataType: string): any[] {
    return this.testData.get(dataType) || [];
  }

  getSnapshot(snapshotName: string): DataSnapshot | undefined {
    return this.snapshots.get(snapshotName);
  }

  getAllSnapshots(): DataSnapshot[] {
    return Array.from(this.snapshots.values());
  }

  deleteSnapshot(snapshotName: string): void {
    this.snapshots.delete(snapshotName);
    testLogger.info(`Snapshot deleted: ${snapshotName}`);
  }

  getStatistics(): {
    totalTestData: number;
    totalSnapshots: number;
    strategy: DataStrategy;
    config: DataStrategyConfig;
  } {
    let totalTestData = 0;
    const testDataValues = Array.from(this.testData.values());
    for (const items of testDataValues) {
      totalTestData += items.length;
    }

    return {
      totalTestData,
      totalSnapshots: this.snapshots.size,
      strategy: this.strategy,
      config: this.getConfig()
    };
  }
}

export const dataStrategyManager = new DataStrategyManager();