import { Logger } from '../../utils/logger';

/**
 * @interface GcpOperationsSuiteConfig
 * @description Configuration for GCP Operations Suite Integration.
 */
export interface GcpOperationsSuiteConfig {
  projectID: string;
  // Add configuration for specific monitoring, logging, tracing setups
}

/**
 * @interface GcpOperationsSuiteOperations
 * @description Defines operations for integrating with Google Cloud Operations Suite.
 */
export interface GcpOperationsSuiteOperations {
  log(level: 'info' | 'warn' | 'error' | 'debug', message: string, metadata?: any): Promise<void>;
  recordMetric(metricName: string, value: number, labels?: { [key: string]: string }): Promise<void>;
  startTrace(traceName: string): any; // Returns a trace span object
  endTrace(span: any): Promise<void>;
  reportError(error: Error, context?: any): Promise<void>;
  profileApplication(durationSeconds: number): Promise<any>;
}

/**
 * @class GcpOperationsSuiteIntegration
 * @description Provides enterprise-grade monitoring and observability by integrating with Google Cloud Operations Suite.
 */
export class GcpOperationsSuiteIntegration implements GcpOperationsSuiteOperations {
  private config: GcpOperationsSuiteConfig;
  private logger: Logger;
  // Placeholders for GCP Operations Suite clients
  // private monitoringClient: any;
  // private loggingClient: any;
  // private traceClient: any;
  // private profilerClient: any;
  // private errorReportingClient: any;

  constructor(config: GcpOperationsSuiteConfig) {
    this.config = config;
    this.logger = new Logger('GcpOperationsSuiteIntegration');
    this.logger.info('GCP Operations Suite Integration initialized.');
    // Initialize GCP Operations Suite clients here (conceptual)
  }

  /**
   * Logs messages to Google Cloud Logging.
   * @param {'info' | 'warn' | 'error' | 'debug'} level The log level.
   * @param {string} message The log message.
   * @param {any} [metadata] Optional metadata to include with the log entry.
   * @returns {Promise<void>}
   */
  public async log(level: 'info' | 'warn' | 'error' | 'debug', message: string, metadata?: any): Promise<void> {
    // Simulate logging to Cloud Logging
    console.log(`[Cloud Logging - ${level.toUpperCase()}] ${message}`, metadata || '');
    await new Promise(resolve => setTimeout(resolve, 10)); // Simulate latency
  }

  /**
   * Records custom metrics to Google Cloud Monitoring.
   * @param {string} metricName The name of the metric.
   * @param {number} value The value of the metric.
   * @param {{ [key: string]: string }} [labels] Optional labels for the metric.
   * @returns {Promise<void>}
   */
  public async recordMetric(metricName: string, value: number, labels?: { [key: string]: string }): Promise<void> {
    this.logger.info(`Recording metric ${metricName}: ${value} with labels:`, labels);
    // Simulate recording to Cloud Monitoring
    await new Promise(resolve => setTimeout(resolve, 20)); // Simulate latency
  }

  /**
   * Starts a trace span for distributed request tracing with Cloud Trace.
   * @param {string} traceName The name of the trace span.
   * @returns {any} A simulated trace span object.
   */
  public startTrace(traceName: string): any {
    this.logger.info(`Starting trace: ${traceName}`);
    // Simulate starting a trace span
    return { name: traceName, startTime: Date.now(), id: `trace-${Date.now()}` };
  }

  /**
   * Ends a trace span and sends it to Cloud Trace.
   * @param {any} span The simulated trace span object.
   * @returns {Promise<void>}
   */
  public async endTrace(span: any): Promise<void> {
    this.logger.info(`Ending trace: ${span.name}`);
    // Simulate ending a trace span and sending to Cloud Trace
    span.endTime = Date.now();
    span.duration = span.endTime - span.startTime;
    await new Promise(resolve => setTimeout(resolve, 15)); // Simulate latency
  }

  /**
   * Reports an error to Google Cloud Error Reporting.
   * @param {Error} error The error object to report.
   * @param {any} [context] Optional context for the error.
   * @returns {Promise<void>}
   */
  public async reportError(error: Error, context?: any): Promise<void> {
    this.logger.error(`Reporting error to Cloud Error Reporting: ${error.message}`, context);
    // Simulate reporting error
    await new Promise(resolve => setTimeout(resolve, 25)); // Simulate latency
  }

  /**
   * Profiles the application performance using Cloud Profiler.
   * @param {number} durationSeconds The duration for which to profile.
   * @returns {Promise<any>} The profiling results.
   */
  public async profileApplication(durationSeconds: number): Promise<any> {
    this.logger.info(`Profiling application for ${durationSeconds} seconds with Cloud Profiler...`);
    // Simulate profiling
    await new Promise(resolve => setTimeout(resolve, durationSeconds * 1000));
    const profileResult = { durationSeconds, cpuProfile: 'simulated_cpu_profile', memoryProfile: 'simulated_memory_profile' };
    this.logger.debug('Application profiling complete.', profileResult);
    return profileResult;
  }
}