import { Logger } from '../../utils/logger';
import { VertexAiPerformanceOptimizer } from '../performance/vertex-ai-performance-optimizer';
import { GcpOperationsSuiteIntegration } from '../performance/gcp-operations-suite-integration';

/**
 * @interface GcpOptimizerConfig
 * @description Configuration for the Google Cloud Platform Optimizer.
 */
export interface GcpOptimizerConfig {
  projectID: string;
  targetRegion: string;
  // Add configuration for cost targets, latency thresholds, etc.
}

/**
 * @interface GcpOptimizerOperations
 * @description Defines operations for optimizing Google Cloud Platform integration.
 */
export interface GcpOptimizerOperations {
  optimizeCost(): Promise<any>;
  optimizeRegionalDeployment(): Promise<void>;
  configureAutoScaling(): Promise<void>;
  optimizeService(serviceName: string): Promise<void>;
  optimizeNetworkRouting(): Promise<void>;
  setupAutomatedOptimizationTriggers(): Promise<void>;
}

/**
 * @class GcpOptimizer
 * @description Optimizes Google Cloud Platform integration for cost, performance, and reliability.
 */
export class GcpOptimizer implements GcpOptimizerOperations {
  private config: GcpOptimizerConfig;
  private logger: Logger;
  private vertexAiOptimizer: VertexAiPerformanceOptimizer;
  private gcpOperations: GcpOperationsSuiteIntegration;

  constructor(
    config: GcpOptimizerConfig,
    vertexAiOptimizer: VertexAiPerformanceOptimizer,
    gcpOperations: GcpOperationsSuiteIntegration
  ) {
    this.config = config;
    this.logger = new Logger('GcpOptimizer');
    this.vertexAiOptimizer = vertexAiOptimizer;
    this.gcpOperations = gcpOperations;
    this.logger.info('Google Cloud Platform Optimizer initialized.');
  }

  /**
   * Optimizes cost through intelligent resource utilization.
   * @returns {Promise<any>} Cost analysis and optimization recommendations.
   */
  public async optimizeCost(): Promise<any> {
    this.logger.info('Optimizing GCP cost (conceptual)...');
    // Leverage Vertex AI Performance Optimizer for cost analysis
    const recommendations = await this.vertexAiOptimizer.analyzeCostAndRecommendOptimizations();
    this.logger.debug('GCP cost optimization recommendations:', recommendations);
    return recommendations;
  }

  /**
   * Optimizes regional deployment for latency reduction.
   * @returns {Promise<void>}
   */
  public async optimizeRegionalDeployment(): Promise<void> {
    this.logger.info(`Optimizing regional deployment for ${this.config.targetRegion} (conceptual)...`);
    // This would involve:
    // - Analyzing network latency between regions.
    // - Deploying resources closer to users.
    // - Using Cloud CDN for content delivery.
    await new Promise(resolve => setTimeout(resolve, 200));
    this.logger.debug('Regional deployment optimized.');
  }

  /**
   * Configures auto-scaling for optimal performance and cost.
   * @returns {Promise<void>}
   */
  public async configureAutoScaling(): Promise<void> {
    this.logger.info('Configuring GCP auto-scaling (conceptual)...');
    // This would involve:
    // - Setting up auto-scaling policies for GKE, Cloud Run, Cloud Functions.
    // - Using predictive scaling based on workload forecasts.
    await this.vertexAiOptimizer.optimizeModelEndpoints(); // Example: optimize model endpoints scaling
    await new Promise(resolve => setTimeout(resolve, 300));
    this.logger.debug('Auto-scaling configured.');
  }

  /**
   * Performs service-specific optimizations for Vertex AI, Cloud SQL, Pub/Sub, etc.
   * @param {string} serviceName The name of the GCP service to optimize.
   * @returns {Promise<void>}
   */
  public async optimizeService(serviceName: string): Promise<void> {
    this.logger.info(`Optimizing GCP service: ${serviceName} (conceptual)...`);
    // This would involve calling specific optimization APIs for each service.
    // Example: For Cloud SQL, optimize query plans or instance types.
    // Example: For Pub/Sub, optimize message batching or subscription settings.
    await new Promise(resolve => setTimeout(resolve, 250));
    this.logger.debug(`Service ${serviceName} optimized.`);
  }

  /**
   * Optimizes network routing within Google Cloud Platform.
   * @returns {Promise<void>}
   */
  public async optimizeNetworkRouting(): Promise<void> {
    this.logger.info('Optimizing GCP network routing (conceptual)...');
    // This would involve:
    // - Configuring VPC networks, subnets, and routing tables.
    // - Using Cloud Interconnect or VPN for hybrid connectivity.
    // - Optimizing load balancer configurations.
    await new Promise(resolve => setTimeout(resolve, 180));
    this.logger.debug('Network routing optimized.');
  }

  /**
   * Sets up automated optimization triggers based on performance monitoring.
   * @returns {Promise<void>}
   */
  public async setupAutomatedOptimizationTriggers(): Promise<void> {
    this.logger.info('Setting up automated GCP optimization triggers (conceptual)...');
    // This would involve:
    // - Creating custom metrics and alerts in Cloud Monitoring.
    // - Using Cloud Functions or Cloud Workflows to trigger optimization actions.
    await this.gcpOperations.setupRealtimeAlerting(); // Example: use existing alerting setup
    await new Promise(resolve => setTimeout(resolve, 220));
    this.logger.debug('Automated optimization triggers configured.');
  }
}