claude-flow-tbowman01/src/enterprise/deployment-manager.ts

Enterprise-grade AI agent orchestration with ruv-swarm integration (Alpha Release)

import { EventEmitter } from 'events';
import { writeFile, readFile, mkdir, readdir } from 'fs/promises';
import { join } from 'path';
import { spawn, ChildProcess } from 'child_process';
import { Logger } from '../core/logger.js';
import { ConfigManager } from '../core/config.js';

export interface DeploymentEnvironment {
  id: string;
  name: string;
  type: 'development' | 'staging' | 'production' | 'testing' | 'custom';
  status: 'active' | 'inactive' | 'maintenance' | 'error';
  configuration: {
    region: string;
    provider: 'aws' | 'gcp' | 'azure' | 'kubernetes' | 'docker' | 'custom';
    endpoints: string[];
    secrets: Record<string, string>;
    environment_variables: Record<string, string>;
    resources: {
      cpu: string;
      memory: string;
      storage: string;
      replicas: number;
    };
  };
  healthCheck: {
    url: string;
    method: 'GET' | 'POST' | 'HEAD';
    expectedStatus: number;
    timeout: number;
    interval: number;
    retries: number;
  };
  monitoring: {
    enabled: boolean;
    alerts: DeploymentAlert[];
    metrics: string[];
    logs: {
      level: string;
      retention: string;
      aggregation: boolean;
    };
  };
  security: {
    tls: boolean;
    authentication: boolean;
    authorization: string[];
    compliance: string[];
    scanning: {
      vulnerabilities: boolean;
      secrets: boolean;
      licenses: boolean;
    };
  };
  createdAt: Date;
  updatedAt: Date;
}

export interface DeploymentStrategy {
  id: string;
  name: string;
  type: 'blue-green' | 'canary' | 'rolling' | 'recreate' | 'custom';
  configuration: {
    rolloutPercentage?: number;
    maxUnavailable?: number;
    maxSurge?: number;
    trafficSplitPercentage?: number;
    monitoringDuration?: number;
    rollbackThreshold?: number;
    approvalRequired?: boolean;
    automatedRollback?: boolean;
  };
  stages: DeploymentStage[];
  rollbackStrategy: {
    automatic: boolean;
    conditions: RollbackCondition[];
    timeout: number;
  };
  notifications: {
    channels: string[];
    events: string[];
  };
}

export interface DeploymentStage {
  id: string;
  name: string;
  order: number;
  type: 'build' | 'test' | 'deploy' | 'verify' | 'promote' | 'rollback' | 'custom';
  status: 'pending' | 'running' | 'success' | 'failed' | 'skipped' | 'cancelled';
  commands: DeploymentCommand[];
  conditions: {
    runIf: string[];
    skipIf: string[];
  };
  timeout: number;
  retryPolicy: {
    maxRetries: number;
    backoffMultiplier: number;
    initialDelay: number;
  };
  artifacts: {
    inputs: string[];
    outputs: string[];
  };
  startTime?: Date;
  endTime?: Date;
  duration?: number;
  logs: DeploymentLog[];
}

export interface DeploymentCommand {
  id: string;
  command: string;
  args: string[];
  workingDirectory?: string;
  environment?: Record<string, string>;
  timeout: number;
  retryOnFailure: boolean;
  successCriteria: {
    exitCode?: number;
    outputContains?: string[];
    outputNotContains?: string[];
  };
}

export interface DeploymentLog {
  timestamp: Date;
  level: 'debug' | 'info' | 'warn' | 'error';
  message: string;
  source: string;
  metadata?: Record<string, any>;
}

export interface RollbackCondition {
  metric: string;
  threshold: number;
  operator: '>' | '<' | '>=' | '<=' | '==' | '!=';
  duration: number;
  description: string;
}

export interface DeploymentAlert {
  id: string;
  name: string;
  condition: string;
  severity: 'low' | 'medium' | 'high' | 'critical';
  channels: string[];
  enabled: boolean;
}

export interface Deployment {
  id: string;
  name: string;
  version: string;
  projectId: string;
  environmentId: string;
  strategyId: string;
  status: 'pending' | 'running' | 'success' | 'failed' | 'rolled-back' | 'cancelled';
  initiatedBy: string;
  source: {
    repository: string;
    branch: string;
    commit: string;
    tag?: string;
  };
  artifacts: {
    buildId?: string;
    imageTag?: string;
    packageVersion?: string;
    files: string[];
  };
  metrics: {
    startTime: Date;
    endTime?: Date;
    duration?: number;
    deploymentSize: number;
    rollbackTime?: number;
    successRate: number;
    errorRate: number;
    performanceMetrics: Record<string, number>;
  };
  stages: DeploymentStage[];
  rollback?: {
    triggered: boolean;
    reason: string;
    timestamp: Date;
    previousDeploymentId: string;
    rollbackDuration: number;
  };
  approvals: DeploymentApproval[];
  notifications: DeploymentNotification[];
  auditLog: DeploymentAuditEntry[];
  createdAt: Date;
  updatedAt: Date;
}

export interface DeploymentApproval {
  id: string;
  stage: string;
  requiredApprovers: string[];
  approvals: {
    userId: string;
    decision: 'approved' | 'rejected';
    reason?: string;
    timestamp: Date;
  }[];
  status: 'pending' | 'approved' | 'rejected' | 'expired';
  expiresAt: Date;
}

export interface DeploymentNotification {
  id: string;
  type: 'email' | 'slack' | 'teams' | 'webhook' | 'sms';
  recipients: string[];
  subject: string;
  message: string;
  timestamp: Date;
  status: 'sent' | 'failed' | 'pending';
}

export interface DeploymentAuditEntry {
  id: string;
  timestamp: Date;
  userId: string;
  action: string;
  target: string;
  details: Record<string, any>;
  ipAddress?: string;
}

export interface DeploymentPipeline {
  id: string;
  name: string;
  projectId: string;
  environments: string[];
  promotionStrategy: 'manual' | 'automatic' | 'conditional';
  promotionRules: {
    environmentId: string;
    conditions: string[];
    approvers: string[];
  }[];
  triggers: {
    type: 'webhook' | 'schedule' | 'manual' | 'git';
    configuration: Record<string, any>;
  }[];
  configuration: {
    parallelDeployments: boolean;
    rollbackOnFailure: boolean;
    notifications: boolean;
    qualityGates: boolean;
  };
  metrics: {
    totalDeployments: number;
    successRate: number;
    averageDeploymentTime: number;
    mttr: number; // Mean Time To Recovery
    changeFailureRate: number;
    deploymentFrequency: number;
  };
  createdAt: Date;
  updatedAt: Date;
}

export interface DeploymentMetrics {
  totalDeployments: number;
  successfulDeployments: number;
  failedDeployments: number;
  rolledBackDeployments: number;
  averageDeploymentTime: number;
  deploymentFrequency: number;
  meanTimeToRecovery: number;
  changeFailureRate: number;
  leadTime: number;
  environmentMetrics: Record<
    string,
    {
      deployments: number;
      successRate: number;
      averageTime: number;
    }
  >;
  strategyMetrics: Record<
    string,
    {
      deployments: number;
      successRate: number;
      rollbackRate: number;
    }
  >;
}

export class DeploymentManager extends EventEmitter {
  private deployments: Map<string, Deployment> = new Map();
  private environments: Map<string, DeploymentEnvironment> = new Map();
  private strategies: Map<string, DeploymentStrategy> = new Map();
  private pipelines: Map<string, DeploymentPipeline> = new Map();
  private activeProcesses: Map<string, ChildProcess> = new Map();
  private deploymentsPath: string;
  private logger: Logger;
  private config: ConfigManager;

  constructor(deploymentsPath: string = './deployments', logger?: Logger, config?: ConfigManager) {
    super();
    this.deploymentsPath = deploymentsPath;
    this.logger = logger || new Logger({ level: 'info', format: 'text', destination: 'console' });
    this.config = config || ConfigManager.getInstance();
  }

  async initialize(): Promise<void> {
    try {
      await mkdir(this.deploymentsPath, { recursive: true });
      await mkdir(join(this.deploymentsPath, 'environments'), { recursive: true });
      await mkdir(join(this.deploymentsPath, 'strategies'), { recursive: true });
      await mkdir(join(this.deploymentsPath, 'pipelines'), { recursive: true });

      await this.loadConfigurations();
      await this.initializeDefaultStrategies();

      this.logger.info('Deployment Manager initialized successfully');
    } catch (error) {
      this.logger.error('Failed to initialize Deployment Manager', { error });
      throw error;
    }
  }

  async createEnvironment(
    environmentData: Partial<DeploymentEnvironment>,
  ): Promise<DeploymentEnvironment> {
    const environment: DeploymentEnvironment = {
      id: environmentData.id || `env-${Date.now()}-${Math.random().toString(36).substr(2, 9)}`,
      name: environmentData.name || 'Unnamed Environment',
      type: environmentData.type || 'development',
      status: 'inactive',
      configuration: {
        region: 'us-east-1',
        provider: 'aws',
        endpoints: [],
        secrets: {},
        environment_variables: {},
        resources: {
          cpu: '1',
          memory: '1Gi',
          storage: '10Gi',
          replicas: 1,
        },
        ...environmentData.configuration,
      },
      healthCheck: {
        url: '/health',
        method: 'GET',
        expectedStatus: 200,
        timeout: 30000,
        interval: 60000,
        retries: 3,
        ...environmentData.healthCheck,
      },
      monitoring: {
        enabled: true,
        alerts: [],
        metrics: ['cpu', 'memory', 'requests', 'errors'],
        logs: {
          level: 'info',
          retention: '30d',
          aggregation: true,
        },
        ...environmentData.monitoring,
      },
      security: {
        tls: true,
        authentication: true,
        authorization: ['admin', 'deploy'],
        compliance: [],
        scanning: {
          vulnerabilities: true,
          secrets: true,
          licenses: true,
        },
        ...environmentData.security,
      },
      createdAt: new Date(),
      updatedAt: new Date(),
    };

    this.environments.set(environment.id, environment);
    await this.saveEnvironment(environment);

    this.emit('environment:created', environment);
    this.logger.info(`Environment created: ${environment.name} (${environment.id})`);

    return environment;
  }

  async createDeployment(deploymentData: {
    name: string;
    version: string;
    projectId: string;
    environmentId: string;
    strategyId: string;
    initiatedBy: string;
    source: Deployment['source'];
    artifacts?: Partial<Deployment['artifacts']>;
  }): Promise<Deployment> {
    const environment = this.environments.get(deploymentData.environmentId);
    if (!environment) {
      throw new Error(`Environment not found: ${deploymentData.environmentId}`);
    }

    const strategy = this.strategies.get(deploymentData.strategyId);
    if (!strategy) {
      throw new Error(`Strategy not found: ${deploymentData.strategyId}`);
    }

    const deployment: Deployment = {
      id: `deploy-${Date.now()}-${Math.random().toString(36).substr(2, 9)}`,
      name: deploymentData.name,
      version: deploymentData.version,
      projectId: deploymentData.projectId,
      environmentId: deploymentData.environmentId,
      strategyId: deploymentData.strategyId,
      status: 'pending',
      initiatedBy: deploymentData.initiatedBy,
      source: deploymentData.source,
      artifacts: {
        files: [],
        ...deploymentData.artifacts,
      },
      metrics: {
        startTime: new Date(),
        deploymentSize: 0,
        successRate: 0,
        errorRate: 0,
        performanceMetrics: {},
      },
      stages: strategy.stages.map((stage) => ({
        ...stage,
        status: 'pending',
        logs: [],
      })),
      approvals: [],
      notifications: [],
      auditLog: [],
      createdAt: new Date(),
      updatedAt: new Date(),
    };

    this.addAuditEntry(deployment, deploymentData.initiatedBy, 'deployment_created', 'deployment', {
      deploymentId: deployment.id,
      environment: environment.name,
      strategy: strategy.name,
    });

    this.deployments.set(deployment.id, deployment);
    await this.saveDeployment(deployment);

    this.emit('deployment:created', deployment);
    this.logger.info(`Deployment created: ${deployment.name} (${deployment.id})`);

    return deployment;
  }

  async executeDeployment(deploymentId: string): Promise<void> {
    const deployment = this.deployments.get(deploymentId);
    if (!deployment) {
      throw new Error(`Deployment not found: ${deploymentId}`);
    }

    if (deployment.status !== 'pending') {
      throw new Error(`Deployment ${deploymentId} is not in pending status`);
    }

    deployment.status = 'running';
    deployment.metrics.startTime = new Date();
    deployment.updatedAt = new Date();

    this.addAuditEntry(deployment, 'system', 'deployment_started', 'deployment', {
      deploymentId,
    });

    await this.saveDeployment(deployment);
    this.emit('deployment:started', deployment);

    try {
      for (const stage of deployment.stages) {
        await this.executeStage(deployment, stage);

        if (stage.status === 'failed') {
          await this.handleDeploymentFailure(deployment, stage);
          return;
        }
      }

      await this.completeDeployment(deployment);
    } catch (error) {
      await this.handleDeploymentError(deployment, error);
    }
  }

  private async executeStage(deployment: Deployment, stage: DeploymentStage): Promise<void> {
    stage.status = 'running';
    stage.startTime = new Date();

    this.addLog(stage, 'info', `Starting stage: ${stage.name}`, 'system');

    try {
      // Check conditions
      if (!this.evaluateStageConditions(deployment, stage)) {
        stage.status = 'skipped';
        this.addLog(stage, 'info', 'Stage skipped due to conditions', 'system');
        return;
      }

      // Handle approvals
      if (stage.type === 'deploy' && (await this.requiresApproval(deployment, stage))) {
        await this.requestApproval(deployment, stage);

        // Wait for approval
        while (await this.isPendingApproval(deployment, stage)) {
          await new Promise((resolve) => setTimeout(resolve, 10000)); // Check every 10 seconds
        }

        if (!(await this.isApproved(deployment, stage))) {
          stage.status = 'failed';
          this.addLog(stage, 'error', 'Stage rejected by approver', 'system');
          return;
        }
      }

      // Execute commands
      for (const command of stage.commands) {
        await this.executeCommand(deployment, stage, command);
      }

      stage.status = 'success';
      stage.endTime = new Date();
      stage.duration = stage.endTime.getTime() - stage.startTime!.getTime();

      this.addLog(stage, 'info', `Stage completed successfully in ${stage.duration}ms`, 'system');
    } catch (error) {
      stage.status = 'failed';
      stage.endTime = new Date();

      this.addLog(
        stage,
        'error',
        `Stage failed: ${error instanceof Error ? error.message : String(error)}`,
        'system',
      );

      // Retry logic
      if (stage.retryPolicy.maxRetries > 0) {
        await this.retryStage(deployment, stage);
      }
    }

    await this.saveDeployment(deployment);
    this.emit('stage:completed', { deployment, stage });
  }

  private async executeCommand(
    deployment: Deployment,
    stage: DeploymentStage,
    command: DeploymentCommand,
  ): Promise<void> {
    return new Promise((resolve, reject) => {
      const environment = this.environments.get(deployment.environmentId);

      const processEnv = {
        ...process.env,
        ...environment?.configuration.environment_variables,
        ...command.environment,
        DEPLOYMENT_ID: deployment.id,
        DEPLOYMENT_VERSION: deployment.version,
        ENVIRONMENT_ID: deployment.environmentId,
      };

      this.addLog(
        stage,
        'info',
        `Executing: ${command.command} ${command.args.join(' ')}`,
        'command',
      );

      const childProcess = spawn(command.command, command.args, {
        cwd: command.workingDirectory || process.cwd(),
        env: processEnv,
        stdio: ['pipe', 'pipe', 'pipe'],
      });

      this.activeProcesses.set(`${deployment.id}-${stage.id}-${command.id}`, childProcess);

      let stdout = '';
      let stderr = '';

      childProcess.stdout?.on('data', (data) => {
        const output = data.toString();
        stdout += output;
        this.addLog(stage, 'info', output.trim(), 'stdout');
      });

      childProcess.stderr?.on('data', (data) => {
        const output = data.toString();
        stderr += output;
        this.addLog(stage, 'error', output.trim(), 'stderr');
      });

      const timeout = setTimeout(() => {
        childProcess.kill('SIGTERM');
        reject(new Error(`Command timed out after ${command.timeout}ms`));
      }, command.timeout);

      childProcess.on('close', (code) => {
        clearTimeout(timeout);
        this.activeProcesses.delete(`${deployment.id}-${stage.id}-${command.id}`);

        // Check success criteria
        const success = this.evaluateCommandSuccess(command, code, stdout, stderr);

        if (success) {
          this.addLog(
            stage,
            'info',
            `Command completed successfully (exit code: ${code})`,
            'command',
          );
          resolve();
        } else {
          this.addLog(stage, 'error', `Command failed (exit code: ${code})`, 'command');
          reject(new Error(`Command failed with exit code ${code}`));
        }
      });

      childProcess.on('error', (error) => {
        clearTimeout(timeout);
        this.activeProcesses.delete(`${deployment.id}-${stage.id}-${command.id}`);
        this.addLog(
          stage,
          'error',
          `Command error: ${error instanceof Error ? error.message : String(error)}`,
          'command',
        );
        reject(error);
      });
    });
  }

  async rollbackDeployment(
    deploymentId: string,
    reason: string,
    userId: string = 'system',
  ): Promise<void> {
    const deployment = this.deployments.get(deploymentId);
    if (!deployment) {
      throw new Error(`Deployment not found: ${deploymentId}`);
    }

    // Find previous successful deployment
    const previousDeployment = await this.getPreviousSuccessfulDeployment(
      deployment.projectId,
      deployment.environmentId,
      deploymentId,
    );

    if (!previousDeployment) {
      throw new Error('No previous successful deployment found for rollback');
    }

    const rollbackStartTime = new Date();

    deployment.rollback = {
      triggered: true,
      reason,
      timestamp: rollbackStartTime,
      previousDeploymentId: previousDeployment.id,
      rollbackDuration: 0,
    };

    deployment.status = 'rolled-back';
    deployment.updatedAt = new Date();

    this.addAuditEntry(deployment, userId, 'rollback_initiated', 'deployment', {
      deploymentId,
      previousDeploymentId: previousDeployment.id,
      reason,
    });

    try {
      // Execute rollback strategy
      await this.executeRollbackStrategy(deployment, previousDeployment);

      deployment.rollback.rollbackDuration = Date.now() - rollbackStartTime.getTime();

      this.addAuditEntry(deployment, userId, 'rollback_completed', 'deployment', {
        deploymentId,
        rollbackDuration: deployment.rollback.rollbackDuration,
      });

      this.emit('deployment:rolled-back', deployment);
      this.logger.info(`Deployment rolled back: ${deploymentId}`);
    } catch (error) {
      this.addAuditEntry(deployment, userId, 'rollback_failed', 'deployment', {
        deploymentId,
        error: error instanceof Error ? error.message : String(error),
      });

      this.logger.error(`Rollback failed for deployment ${deploymentId}`, { error });
      throw error;
    }

    await this.saveDeployment(deployment);
  }

  async getDeploymentMetrics(filters?: {
    projectId?: string;
    environmentId?: string;
    strategyId?: string;
    timeRange?: { start: Date; end: Date };
  }): Promise<DeploymentMetrics> {
    let deployments = Array.from(this.deployments.values());

    // Apply filters
    if (filters) {
      if (filters.projectId) {
        deployments = deployments.filter((d) => d.projectId === filters.projectId);
      }
      if (filters.environmentId) {
        deployments = deployments.filter((d) => d.environmentId === filters.environmentId);
      }
      if (filters.strategyId) {
        deployments = deployments.filter((d) => d.strategyId === filters.strategyId);
      }
      if (filters.timeRange) {
        deployments = deployments.filter(
          (d) => d.createdAt >= filters.timeRange!.start && d.createdAt <= filters.timeRange!.end,
        );
      }
    }

    const totalDeployments = deployments.length;
    const successfulDeployments = deployments.filter((d) => d.status === 'success').length;
    const failedDeployments = deployments.filter((d) => d.status === 'failed').length;
    const rolledBackDeployments = deployments.filter((d) => d.status === 'rolled-back').length;

    const completedDeployments = deployments.filter(
      (d) => d.metrics.endTime && d.metrics.startTime,
    );

    const averageDeploymentTime =
      completedDeployments.length > 0
        ? completedDeployments.reduce(
            (sum, d) => sum + (d.metrics.endTime!.getTime() - d.metrics.startTime.getTime()),
            0,
          ) / completedDeployments.length
        : 0;

    // Calculate environment metrics
    const environmentMetrics: Record<string, any> = {};
    for (const env of this.environments.values()) {
      const envDeployments = deployments.filter((d) => d.environmentId === env.id);
      const envSuccessful = envDeployments.filter((d) => d.status === 'success').length;

      environmentMetrics[env.id] = {
        deployments: envDeployments.length,
        successRate: envDeployments.length > 0 ? (envSuccessful / envDeployments.length) * 100 : 0,
        averageTime:
          envDeployments.length > 0
            ? envDeployments.reduce((sum, d) => sum + (d.metrics.duration || 0), 0) /
              envDeployments.length
            : 0,
      };
    }

    // Calculate strategy metrics
    const strategyMetrics: Record<string, any> = {};
    for (const strategy of this.strategies.values()) {
      const strategyDeployments = deployments.filter((d) => d.strategyId === strategy.id);
      const strategySuccessful = strategyDeployments.filter((d) => d.status === 'success').length;
      const strategyRolledBack = strategyDeployments.filter(
        (d) => d.status === 'rolled-back',
      ).length;

      strategyMetrics[strategy.id] = {
        deployments: strategyDeployments.length,
        successRate:
          strategyDeployments.length > 0
            ? (strategySuccessful / strategyDeployments.length) * 100
            : 0,
        rollbackRate:
          strategyDeployments.length > 0
            ? (strategyRolledBack / strategyDeployments.length) * 100
            : 0,
      };
    }

    return {
      totalDeployments,
      successfulDeployments,
      failedDeployments,
      rolledBackDeployments,
      averageDeploymentTime,
      deploymentFrequency: this.calculateDeploymentFrequency(deployments),
      meanTimeToRecovery: this.calculateMTTR(deployments),
      changeFailureRate:
        ((failedDeployments + rolledBackDeployments) / Math.max(totalDeployments, 1)) * 100,
      leadTime: this.calculateLeadTime(deployments),
      environmentMetrics,
      strategyMetrics,
    };
  }

  // Private helper methods
  private async loadConfigurations(): Promise<void> {
    // Load environments, strategies, and pipelines from disk
    try {
      const envFiles = await readdir(join(this.deploymentsPath, 'environments'));
      for (const file of envFiles.filter((f) => f.endsWith('.json'))) {
        const content = await readFile(join(this.deploymentsPath, 'environments', file), 'utf-8');
        const env: DeploymentEnvironment = JSON.parse(content);
        this.environments.set(env.id, env);
      }

      const strategyFiles = await readdir(join(this.deploymentsPath, 'strategies'));
      for (const file of strategyFiles.filter((f) => f.endsWith('.json'))) {
        const content = await readFile(join(this.deploymentsPath, 'strategies', file), 'utf-8');
        const strategy: DeploymentStrategy = JSON.parse(content);
        this.strategies.set(strategy.id, strategy);
      }

      const pipelineFiles = await readdir(join(this.deploymentsPath, 'pipelines'));
      for (const file of pipelineFiles.filter((f) => f.endsWith('.json'))) {
        const content = await readFile(join(this.deploymentsPath, 'pipelines', file), 'utf-8');
        const pipeline: DeploymentPipeline = JSON.parse(content);
        this.pipelines.set(pipeline.id, pipeline);
      }

      this.logger.info(
        `Loaded ${this.environments.size} environments, ${this.strategies.size} strategies, ${this.pipelines.size} pipelines`,
      );
    } catch (error) {
      this.logger.warn('Failed to load some configurations', { error });
    }
  }

  private async initializeDefaultStrategies(): Promise<void> {
    const defaultStrategies: Partial<DeploymentStrategy>[] = [
      {
        name: 'Blue-Green Deployment',
        type: 'blue-green',
        configuration: {
          monitoringDuration: 300000, // 5 minutes
          automatedRollback: true,
          rollbackThreshold: 5,
        },
        stages: [
          {
            id: 'build',
            name: 'Build',
            order: 1,
            type: 'build',
            status: 'pending',
            commands: [],
            conditions: { runIf: [], skipIf: [] },
            timeout: 600000,
            retryPolicy: { maxRetries: 2, backoffMultiplier: 2, initialDelay: 1000 },
            artifacts: { inputs: [], outputs: [] },
            logs: [],
          },
          {
            id: 'deploy-green',
            name: 'Deploy to Green',
            order: 2,
            type: 'deploy',
            status: 'pending',
            commands: [],
            conditions: { runIf: [], skipIf: [] },
            timeout: 900000,
            retryPolicy: { maxRetries: 1, backoffMultiplier: 2, initialDelay: 5000 },
            artifacts: { inputs: [], outputs: [] },
            logs: [],
          },
          {
            id: 'verify',
            name: 'Verify Green',
            order: 3,
            type: 'verify',
            status: 'pending',
            commands: [],
            conditions: { runIf: [], skipIf: [] },
            timeout: 300000,
            retryPolicy: { maxRetries: 3, backoffMultiplier: 1.5, initialDelay: 2000 },
            artifacts: { inputs: [], outputs: [] },
            logs: [],
          },
          {
            id: 'switch-traffic',
            name: 'Switch Traffic',
            order: 4,
            type: 'promote',
            status: 'pending',
            commands: [],
            conditions: { runIf: [], skipIf: [] },
            timeout: 60000,
            retryPolicy: { maxRetries: 1, backoffMultiplier: 1, initialDelay: 1000 },
            artifacts: { inputs: [], outputs: [] },
            logs: [],
          },
        ],
        rollbackStrategy: {
          automatic: true,
          conditions: [
            {
              metric: 'error_rate',
              threshold: 5,
              operator: '>',
              duration: 60000,
              description: 'Error rate exceeds 5%',
            },
          ],
          timeout: 300000,
        },
      },
      {
        name: 'Canary Deployment',
        type: 'canary',
        configuration: {
          trafficSplitPercentage: 10,
          monitoringDuration: 600000, // 10 minutes
          automatedRollback: true,
          rollbackThreshold: 2,
        },
        stages: [
          {
            id: 'build',
            name: 'Build',
            order: 1,
            type: 'build',
            status: 'pending',
            commands: [],
            conditions: { runIf: [], skipIf: [] },
            timeout: 600000,
            retryPolicy: { maxRetries: 2, backoffMultiplier: 2, initialDelay: 1000 },
            artifacts: { inputs: [], outputs: [] },
            logs: [],
          },
          {
            id: 'deploy-canary',
            name: 'Deploy Canary (10%)',
            order: 2,
            type: 'deploy',
            status: 'pending',
            commands: [],
            conditions: { runIf: [], skipIf: [] },
            timeout: 900000,
            retryPolicy: { maxRetries: 1, backoffMultiplier: 2, initialDelay: 5000 },
            artifacts: { inputs: [], outputs: [] },
            logs: [],
          },
          {
            id: 'monitor-canary',
            name: 'Monitor Canary',
            order: 3,
            type: 'verify',
            status: 'pending',
            commands: [],
            conditions: { runIf: [], skipIf: [] },
            timeout: 600000,
            retryPolicy: { maxRetries: 1, backoffMultiplier: 1, initialDelay: 10000 },
            artifacts: { inputs: [], outputs: [] },
            logs: [],
          },
          {
            id: 'promote-full',
            name: 'Promote to 100%',
            order: 4,
            type: 'promote',
            status: 'pending',
            commands: [],
            conditions: { runIf: [], skipIf: [] },
            timeout: 300000,
            retryPolicy: { maxRetries: 1, backoffMultiplier: 1, initialDelay: 1000 },
            artifacts: { inputs: [], outputs: [] },
            logs: [],
          },
        ],
        rollbackStrategy: {
          automatic: true,
          conditions: [
            {
              metric: 'error_rate',
              threshold: 2,
              operator: '>',
              duration: 120000,
              description: 'Canary error rate exceeds 2%',
            },
            {
              metric: 'response_time',
              threshold: 500,
              operator: '>',
              duration: 180000,
              description: 'Response time exceeds 500ms',
            },
          ],
          timeout: 180000,
        },
      },
      {
        name: 'Rolling Deployment',
        type: 'rolling',
        configuration: {
          maxUnavailable: 1,
          maxSurge: 1,
          monitoringDuration: 120000,
          automatedRollback: false,
        },
        stages: [
          {
            id: 'build',
            name: 'Build',
            order: 1,
            type: 'build',
            status: 'pending',
            commands: [],
            conditions: { runIf: [], skipIf: [] },
            timeout: 600000,
            retryPolicy: { maxRetries: 2, backoffMultiplier: 2, initialDelay: 1000 },
            artifacts: { inputs: [], outputs: [] },
            logs: [],
          },
          {
            id: 'rolling-update',
            name: 'Rolling Update',
            order: 2,
            type: 'deploy',
            status: 'pending',
            commands: [],
            conditions: { runIf: [], skipIf: [] },
            timeout: 1200000,
            retryPolicy: { maxRetries: 1, backoffMultiplier: 2, initialDelay: 5000 },
            artifacts: { inputs: [], outputs: [] },
            logs: [],
          },
          {
            id: 'health-check',
            name: 'Health Check',
            order: 3,
            type: 'verify',
            status: 'pending',
            commands: [],
            conditions: { runIf: [], skipIf: [] },
            timeout: 300000,
            retryPolicy: { maxRetries: 3, backoffMultiplier: 1.5, initialDelay: 5000 },
            artifacts: { inputs: [], outputs: [] },
            logs: [],
          },
        ],
        rollbackStrategy: {
          automatic: false,
          conditions: [],
          timeout: 600000,
        },
      },
    ];

    for (const strategyData of defaultStrategies) {
      if (!Array.from(this.strategies.values()).some((s) => s.name === strategyData.name)) {
        const strategy: DeploymentStrategy = {
          id: `strategy-${Date.now()}-${Math.random().toString(36).substr(2, 9)}`,
          notifications: {
            channels: [],
            events: ['deployment:started', 'deployment:completed', 'deployment:failed'],
          },
          ...strategyData,
        } as DeploymentStrategy;

        this.strategies.set(strategy.id, strategy);
        await this.saveStrategy(strategy);
      }
    }
  }

  private async saveEnvironment(environment: DeploymentEnvironment): Promise<void> {
    const filePath = join(this.deploymentsPath, 'environments', `${environment.id}.json`);
    await writeFile(filePath, JSON.stringify(environment, null, 2));
  }

  private async saveStrategy(strategy: DeploymentStrategy): Promise<void> {
    const filePath = join(this.deploymentsPath, 'strategies', `${strategy.id}.json`);
    await writeFile(filePath, JSON.stringify(strategy, null, 2));
  }

  private async saveDeployment(deployment: Deployment): Promise<void> {
    const filePath = join(this.deploymentsPath, `${deployment.id}.json`);
    await writeFile(filePath, JSON.stringify(deployment, null, 2));
  }

  private addAuditEntry(
    deployment: Deployment,
    userId: string,
    action: string,
    target: string,
    details: Record<string, any>,
  ): void {
    const entry: DeploymentAuditEntry = {
      id: `audit-${Date.now()}-${Math.random().toString(36).substr(2, 9)}`,
      timestamp: new Date(),
      userId,
      action,
      target,
      details,
    };

    deployment.auditLog.push(entry);
  }

  private addLog(
    stage: DeploymentStage,
    level: DeploymentLog['level'],
    message: string,
    source: string,
    metadata?: Record<string, any>,
  ): void {
    const log: DeploymentLog = {
      timestamp: new Date(),
      level,
      message,
      source,
      metadata,
    };

    stage.logs.push(log);
  }

  private evaluateStageConditions(deployment: Deployment, stage: DeploymentStage): boolean {
    // Implement condition evaluation logic
    return true; // Simplified for now
  }

  private async requiresApproval(deployment: Deployment, stage: DeploymentStage): Promise<boolean> {
    const strategy = this.strategies.get(deployment.strategyId);
    return strategy?.configuration.approvalRequired || false;
  }

  private async requestApproval(deployment: Deployment, stage: DeploymentStage): Promise<void> {
    // Implement approval request logic
    this.emit('approval:requested', { deployment, stage });
  }

  private async isPendingApproval(
    deployment: Deployment,
    stage: DeploymentStage,
  ): Promise<boolean> {
    // Check if there are pending approvals for this stage
    return false; // Simplified for now
  }

  private async isApproved(deployment: Deployment, stage: DeploymentStage): Promise<boolean> {
    // Check if stage is approved
    return true; // Simplified for now
  }

  private evaluateCommandSuccess(
    command: DeploymentCommand,
    exitCode: number | null,
    stdout: string,
    stderr: string,
  ): boolean {
    if (
      command.successCriteria.exitCode !== undefined &&
      exitCode !== command.successCriteria.exitCode
    ) {
      return false;
    }

    if (command.successCriteria.outputContains) {
      for (const pattern of command.successCriteria.outputContains) {
        if (!stdout.includes(pattern)) {
          return false;
        }
      }
    }

    if (command.successCriteria.outputNotContains) {
      for (const pattern of command.successCriteria.outputNotContains) {
        if (stdout.includes(pattern) || stderr.includes(pattern)) {
          return false;
        }
      }
    }

    return true;
  }

  private async retryStage(deployment: Deployment, stage: DeploymentStage): Promise<void> {
    // Implement retry logic
    this.logger.info(`Retrying stage: ${stage.name}`);
  }

  private async handleDeploymentFailure(
    deployment: Deployment,
    failedStage: DeploymentStage,
  ): Promise<void> {
    deployment.status = 'failed';
    deployment.metrics.endTime = new Date();
    deployment.updatedAt = new Date();

    this.addAuditEntry(deployment, 'system', 'deployment_failed', 'deployment', {
      deploymentId: deployment.id,
      failedStage: failedStage.name,
      reason: 'Stage execution failed',
    });

    await this.saveDeployment(deployment);
    this.emit('deployment:failed', { deployment, failedStage });

    // Check if automatic rollback is enabled
    const strategy = this.strategies.get(deployment.strategyId);
    if (strategy?.rollbackStrategy.automatic) {
      await this.rollbackDeployment(deployment.id, 'Automatic rollback due to deployment failure');
    }
  }

  private async handleDeploymentError(deployment: Deployment, error: any): Promise<void> {
    deployment.status = 'failed';
    deployment.metrics.endTime = new Date();
    deployment.updatedAt = new Date();

    this.addAuditEntry(deployment, 'system', 'deployment_error', 'deployment', {
      deploymentId: deployment.id,
      error: error instanceof Error ? error.message : String(error),
    });

    await this.saveDeployment(deployment);
    this.emit('deployment:error', { deployment, error });

    this.logger.error(`Deployment error: ${deployment.id}`, { error });
  }

  private async completeDeployment(deployment: Deployment): Promise<void> {
    deployment.status = 'success';
    deployment.metrics.endTime = new Date();
    deployment.metrics.duration =
      deployment.metrics.endTime.getTime() - deployment.metrics.startTime.getTime();
    deployment.updatedAt = new Date();

    this.addAuditEntry(deployment, 'system', 'deployment_completed', 'deployment', {
      deploymentId: deployment.id,
      duration: deployment.metrics.duration,
    });

    await this.saveDeployment(deployment);
    this.emit('deployment:completed', deployment);

    this.logger.info(`Deployment completed: ${deployment.id} in ${deployment.metrics.duration}ms`);
  }

  private async getPreviousSuccessfulDeployment(
    projectId: string,
    environmentId: string,
    currentDeploymentId: string,
  ): Promise<Deployment | null> {
    const deployments = Array.from(this.deployments.values())
      .filter(
        (d) =>
          d.projectId === projectId &&
          d.environmentId === environmentId &&
          d.status === 'success' &&
          d.id !== currentDeploymentId,
      )
      .sort((a, b) => b.createdAt.getTime() - a.createdAt.getTime());

    return deployments[0] || null;
  }

  private async executeRollbackStrategy(
    deployment: Deployment,
    previousDeployment: Deployment,
  ): Promise<void> {
    // Implement rollback execution logic
    this.logger.info(`Executing rollback from ${deployment.id} to ${previousDeployment.id}`);

    // This would typically involve:
    // 1. Switching traffic back to previous version
    // 2. Updating load balancer configuration
    // 3. Rolling back container deployments
    // 4. Reverting database migrations if needed
    // 5. Updating DNS records

    this.emit('rollback:executed', { deployment, previousDeployment });
  }

  private calculateDeploymentFrequency(deployments: Deployment[]): number {
    if (deployments.length === 0) return 0;

    const sortedDeployments = deployments.sort(
      (a, b) => a.createdAt.getTime() - b.createdAt.getTime(),
    );

    const firstDeployment = sortedDeployments[0];
    const lastDeployment = sortedDeployments[sortedDeployments.length - 1];

    const timeSpan = lastDeployment.createdAt.getTime() - firstDeployment.createdAt.getTime();
    const days = timeSpan / (1000 * 60 * 60 * 24);

    return deployments.length / Math.max(days, 1);
  }

  private calculateMTTR(deployments: Deployment[]): number {
    const failedDeployments = deployments.filter(
      (d) => d.status === 'failed' || d.status === 'rolled-back',
    );

    if (failedDeployments.length === 0) return 0;

    const recoveryTimes = failedDeployments
      .map((d) => d.rollback?.rollbackDuration || 0)
      .filter((time) => time > 0);

    if (recoveryTimes.length === 0) return 0;

    return recoveryTimes.reduce((sum, time) => sum + time, 0) / recoveryTimes.length;
  }

  private calculateLeadTime(deployments: Deployment[]): number {
    // This would typically calculate from commit to production
    // For now, return average deployment time
    const completedDeployments = deployments.filter((d) => d.metrics.duration);

    if (completedDeployments.length === 0) return 0;

    return (
      completedDeployments.reduce((sum, d) => sum + (d.metrics.duration || 0), 0) /
      completedDeployments.length
    );
  }
}