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

/**
 * @interface InfrastructureConfig
 * @description Configuration for Infrastructure Management.
 */
export interface InfrastructureConfig {
  projectID: string;
  region: string;
  environment: 'development' | 'staging' | 'production';
  terraformStateBucket?: string;
  // Add configuration for Kubernetes clusters, Helm repositories, etc.
}

/**
 * @interface InfrastructureOperations
 * @description Defines operations for managing Google Cloud infrastructure as code.
 */
export interface InfrastructureOperations {
  provisionInfrastructure(component: string): Promise<void>;
  deployKubernetesApplication(appName: string, manifestPath: string): Promise<void>;
  deployHelmChart(chartName: string, releaseName: string, values: any): Promise<void>;
  configureNetworkSecurity(): Promise<void>;
  setupBackupAndRecovery(): Promise<void>;
}

/**
 * @class InfrastructureManager
 * @description Manages Google Cloud infrastructure provisioning, deployment, and security using Infrastructure as Code principles.
 */
export class InfrastructureManager implements InfrastructureOperations {
  private config: InfrastructureConfig;
  private logger: Logger;

  constructor(config: InfrastructureConfig) {
    this.config = config;
    this.logger = new Logger('InfrastructureManager');
    this.logger.info('Infrastructure Manager initialized.');
  }

  /**
   * Provisions Google Cloud infrastructure components using Terraform (conceptual).
   * @param {string} component The name of the infrastructure component to provision (e.g., 'gke_cluster', 'cloud_sql').
   * @returns {Promise<void>}
   */
  public async provisionInfrastructure(component: string): Promise<void> {
    this.logger.info(`Provisioning infrastructure component: ${component} (conceptual)...`);
    // This would involve executing Terraform commands (init, plan, apply).
    await new Promise(resolve => setTimeout(resolve, 2000));
    this.logger.debug(`Infrastructure component ${component} provisioned.`);
  }

  /**
   * Deploys a Kubernetes application using manifests (conceptual).
   * @param {string} appName The name of the application.
   * @param {string} manifestPath The path to the Kubernetes manifest file or directory.
   * @returns {Promise<void>}
   */
  public async deployKubernetesApplication(appName: string, manifestPath: string): Promise<void> {
    this.logger.info(`Deploying Kubernetes application: ${appName} from ${manifestPath} (conceptual)...`);
    // This would involve using kubectl apply.
    await new Promise(resolve => setTimeout(resolve, 1000));
    this.logger.debug(`Kubernetes application ${appName} deployed.`);
  }

  /**
   * Deploys a Helm chart for application deployment (conceptual).
   * @param {string} chartName The name of the Helm chart.
   * @param {string} releaseName The release name for the deployment.
   * @param {any} values Custom values for the Helm chart.
   * @returns {Promise<void>}
   */
  public async deployHelmChart(chartName: string, releaseName: string, values: any): Promise<void> {
    this.logger.info(`Deploying Helm chart ${chartName} as ${releaseName} (conceptual)...`);
    // This would involve using helm install or helm upgrade.
    await new Promise(resolve => setTimeout(resolve, 1500));
    this.logger.debug(`Helm chart ${chartName} deployed as ${releaseName}.`);
  }

  /**
   * Configures network security and firewall rules (conceptual).
   * @returns {Promise<void>}
   */
  public async configureNetworkSecurity(): Promise<void> {
    this.logger.info('Configuring network security and firewall rules (conceptual)...');
    // This would involve configuring VPC firewall rules, network policies, etc.
    await new Promise(resolve => setTimeout(resolve, 800));
    this.logger.debug('Network security configured.');
  }

  /**
   * Sets up automated backup and disaster recovery procedures (conceptual).
   * @returns {Promise<void>}
   */
  public async setupBackupAndRecovery(): Promise<void> {
    this.logger.info('Setting up automated backup and disaster recovery (conceptual)...');
    // This would involve configuring Cloud Storage backups, Cloud SQL automated backups, etc.
    await new Promise(resolve => setTimeout(resolve, 1200));
    this.logger.debug('Backup and recovery setup complete.');
  }
}