@clduab11/gemini-flow/src/core/github-a2a-cicd-orchestrator.ts

Revolutionary AI agent swarm coordination platform with Google Services integration, multimedia processing, and production-ready monitoring. Features 8 Google AI services, quantum computing capabilities, and enterprise-grade security.

/**
 * GitHub A2A CI/CD Orchestrator - A2A-based workflow orchestration for continuous integration and deployment
 * Coordinates A2A agents for intelligent pipeline management, testing, and deployment strategies
 */

import { GitHubA2ABridge, A2AAgent } from "./github-a2a-bridge.js";
import { GitHubA2ACrossRepo } from "./github-a2a-cross-repo.js";
import { A2AIntegration } from "./a2a-integration.js";
import { EventEmitter } from "events";

export interface CICDPipeline {
  id: string;
  name: string;
  repository: string;
  branch: string;
  trigger: "push" | "pr" | "schedule" | "manual" | "tag";
  stages: PipelineStage[];
  agents_assigned: Record<string, string[]>; // stage -> agent_ids
  environment: "development" | "staging" | "production";
  status: "idle" | "running" | "success" | "failure" | "cancelled" | "paused";
  created_at: Date;
  started_at?: Date;
  completed_at?: Date;
  duration?: number;
  metrics: PipelineMetrics;
}

export interface PipelineStage {
  id: string;
  name: string;
  type:
    | "build"
    | "test"
    | "security"
    | "quality"
    | "deploy"
    | "approval"
    | "notify";
  dependencies: string[];
  parallel: boolean;
  required_agents: string[];
  jobs: PipelineJob[];
  retry_policy: RetryPolicy;
  timeout: number; // minutes
  environment_vars: Record<string, string>;
  artifacts: ArtifactConfig[];
  status: "pending" | "running" | "success" | "failure" | "skipped";
  started_at?: Date;
  completed_at?: Date;
}

export interface PipelineJob {
  id: string;
  name: string;
  agent_type: string;
  command: string;
  script?: string;
  docker_image?: string;
  resources: ResourceRequirements;
  matrix?: Record<string, any[]>;
  condition?: string;
  outputs: Record<string, string>;
  status: "pending" | "running" | "success" | "failure" | "skipped";
}

export interface RetryPolicy {
  max_attempts: number;
  backoff_strategy: "linear" | "exponential" | "fixed";
  base_delay: number; // seconds
  max_delay: number; // seconds
  retry_conditions: string[];
}

export interface ResourceRequirements {
  cpu: string; // e.g., "100m", "1"
  memory: string; // e.g., "128Mi", "1Gi"
  storage: string; // e.g., "1Gi"
  gpu?: boolean;
}

export interface ArtifactConfig {
  name: string;
  path: string;
  retention_days: number;
  required: boolean;
  publish_to?: string[];
}

export interface PipelineMetrics {
  total_runs: number;
  success_rate: number;
  average_duration: number;
  failure_count: number;
  last_success: Date | null;
  last_failure: Date | null;
  agent_performance: Record<string, AgentPerformance>;
}

export interface AgentPerformance {
  agent_id: string;
  tasks_completed: number;
  success_rate: number;
  average_duration: number;
  failure_reasons: Record<string, number>;
}

export interface DeploymentStrategy {
  type: "blue_green" | "rolling" | "canary" | "recreate" | "a_b_test";
  parameters: Record<string, any>;
  health_checks: HealthCheck[];
  rollback_triggers: RollbackTrigger[];
  approval_required: boolean;
  approval_agents: string[];
}

export interface HealthCheck {
  type: "http" | "tcp" | "command" | "metric";
  endpoint?: string;
  command?: string;
  metric_query?: string;
  timeout: number;
  interval: number;
  retries: number;
  success_threshold: number;
  failure_threshold: number;
}

export interface RollbackTrigger {
  condition: string;
  threshold: number;
  time_window: number; // minutes
  action: "automatic" | "alert_only";
}

export interface WorkflowExecution {
  id: string;
  pipeline_id: string;
  trigger_event: any;
  commit_sha: string;
  branch: string;
  stages_completed: string[];
  current_stage: string | null;
  agents_involved: string[];
  artifacts_generated: string[];
  test_results: TestResults;
  security_scan_results: SecurityScanResults;
  quality_metrics: QualityMetrics;
  deployment_info?: DeploymentInfo;
  status: "running" | "success" | "failure" | "cancelled";
  created_at: Date;
  completed_at?: Date;
}

export interface TestResults {
  total_tests: number;
  passed_tests: number;
  failed_tests: number;
  skipped_tests: number;
  coverage_percentage: number;
  test_suites: TestSuite[];
  performance_benchmarks: PerformanceBenchmark[];
}

export interface TestSuite {
  name: string;
  tests: number;
  passed: number;
  failed: number;
  duration: number;
  failures: TestFailure[];
}

export interface TestFailure {
  test_name: string;
  error_message: string;
  stack_trace?: string;
  category: "unit" | "integration" | "e2e" | "performance" | "security";
}

export interface PerformanceBenchmark {
  name: string;
  metric: string;
  value: number;
  threshold: number;
  status: "pass" | "fail" | "warning";
}

export interface SecurityScanResults {
  vulnerabilities: SecurityVulnerability[];
  compliance_checks: ComplianceCheck[];
  secret_scan_results: SecretScanResult[];
  dependency_scan: DependencyScanResult;
  overall_score: number;
}

export interface SecurityVulnerability {
  id: string;
  severity: "critical" | "high" | "medium" | "low";
  title: string;
  description: string;
  file_path?: string;
  line_number?: number;
  cwe_id?: string;
  cvss_score?: number;
  fix_available: boolean;
  fix_suggestion?: string;
}

export interface ComplianceCheck {
  rule_id: string;
  rule_name: string;
  status: "pass" | "fail" | "warning";
  description: string;
  remediation?: string;
}

export interface SecretScanResult {
  type: "api_key" | "password" | "token" | "certificate" | "private_key";
  file_path: string;
  line_number: number;
  confidence: number;
  masked_value: string;
}

export interface DependencyScanResult {
  total_dependencies: number;
  vulnerable_dependencies: number;
  outdated_dependencies: number;
  license_issues: number;
  dependency_details: DependencyDetail[];
}

export interface DependencyDetail {
  name: string;
  version: string;
  latest_version: string;
  vulnerabilities: SecurityVulnerability[];
  license: string;
  risk_level: "low" | "medium" | "high" | "critical";
}

export interface QualityMetrics {
  code_coverage: number;
  code_quality_score: number;
  maintainability_index: number;
  technical_debt: number; // minutes
  complexity_score: number;
  duplication_percentage: number;
  rule_violations: QualityViolation[];
}

export interface QualityViolation {
  rule_id: string;
  rule_name: string;
  severity: "info" | "minor" | "major" | "critical";
  file_path: string;
  line_number: number;
  message: string;
  fix_suggestion?: string;
}

export interface DeploymentInfo {
  environment: string;
  strategy: DeploymentStrategy;
  version: string;
  deployed_at: Date;
  health_status: "healthy" | "degraded" | "unhealthy";
  rollback_available: boolean;
  traffic_percentage: number;
  performance_metrics: Record<string, number>;
}

export class GitHubA2ACICDOrchestrator extends EventEmitter {
  private bridge: GitHubA2ABridge;
  private crossRepo: GitHubA2ACrossRepo;
  private a2aIntegration: A2AIntegration;
  private pipelines: Map<string, CICDPipeline> = new Map();
  private activeExecutions: Map<string, WorkflowExecution> = new Map();
  private agentPool: Map<string, A2AAgent> = new Map();
  private deploymentStrategies: Map<string, DeploymentStrategy> = new Map();
  private globalMetrics: Map<string, any> = new Map();

  constructor(bridge: GitHubA2ABridge, crossRepo: GitHubA2ACrossRepo) {
    super();
    this.bridge = bridge;
    this.crossRepo = crossRepo;
    this.a2aIntegration = new A2AIntegration();
    this.initializeDeploymentStrategies();
    this.setupEventHandlers();
  }

  /**
   * Initialize default deployment strategies
   */
  private initializeDeploymentStrategies(): void {
    // Blue-Green deployment
    this.deploymentStrategies.set("blue-green", {
      type: "blue_green",
      parameters: {
        switch_timeout: 300, // 5 minutes
        health_check_timeout: 120, // 2 minutes
      },
      health_checks: [
        {
          type: "http",
          endpoint: "/health",
          timeout: 30,
          interval: 10,
          retries: 3,
          success_threshold: 3,
          failure_threshold: 2,
        },
      ],
      rollback_triggers: [
        {
          condition: "error_rate > threshold",
          threshold: 5, // 5% error rate
          time_window: 10,
          action: "automatic",
        },
      ],
      approval_required: true,
      approval_agents: ["coordinator", "security"],
    });

    // Canary deployment
    this.deploymentStrategies.set("canary", {
      type: "canary",
      parameters: {
        initial_traffic: 5, // 5% initial traffic
        increment_percentage: 10,
        increment_interval: 300, // 5 minutes
        max_traffic: 100,
      },
      health_checks: [
        {
          type: "http",
          endpoint: "/health",
          timeout: 30,
          interval: 5,
          retries: 2,
          success_threshold: 5,
          failure_threshold: 3,
        },
        {
          type: "metric",
          metric_query: "error_rate",
          timeout: 60,
          interval: 30,
          retries: 1,
          success_threshold: 1,
          failure_threshold: 1,
        },
      ],
      rollback_triggers: [
        {
          condition: "error_rate > threshold",
          threshold: 2, // 2% error rate
          time_window: 5,
          action: "automatic",
        },
        {
          condition: "response_time > threshold",
          threshold: 500, // 500ms
          time_window: 10,
          action: "alert_only",
        },
      ],
      approval_required: false,
      approval_agents: [],
    });

    // Rolling deployment
    this.deploymentStrategies.set("rolling", {
      type: "rolling",
      parameters: {
        max_unavailable: 25, // 25% max unavailable
        max_surge: 25, // 25% max surge
        batch_size: 2,
      },
      health_checks: [
        {
          type: "http",
          endpoint: "/health",
          timeout: 30,
          interval: 15,
          retries: 3,
          success_threshold: 2,
          failure_threshold: 3,
        },
      ],
      rollback_triggers: [
        {
          condition: "failed_instances > threshold",
          threshold: 50, // 50% failed instances
          time_window: 15,
          action: "automatic",
        },
      ],
      approval_required: false,
      approval_agents: [],
    });
  }

  /**
   * Create a new CI/CD pipeline
   */
  async createPipeline(
    config: Omit<CICDPipeline, "id" | "created_at" | "metrics">,
  ): Promise<string> {
    const pipelineId = `pipeline-${config.repository}-${Date.now()}`;

    const pipeline: CICDPipeline = {
      ...config,
      id: pipelineId,
      created_at: new Date(),
      metrics: {
        total_runs: 0,
        success_rate: 0,
        average_duration: 0,
        failure_count: 0,
        last_success: null,
        last_failure: null,
        agent_performance: {},
      },
    };

    this.pipelines.set(pipelineId, pipeline);

    // Assign agents to pipeline stages
    await this.assignAgentsToPipeline(pipeline);

    this.emit("pipeline-created", { pipelineId, pipeline });

    return pipelineId;
  }

  /**
   * Trigger pipeline execution
   */
  async triggerPipeline(pipelineId: string, trigger: any): Promise<string> {
    const pipeline = this.pipelines.get(pipelineId);
    if (!pipeline) {
      throw new Error(`Pipeline ${pipelineId} not found`);
    }

    const executionId = `exec-${pipelineId}-${Date.now()}`;

    const execution: WorkflowExecution = {
      id: executionId,
      pipeline_id: pipelineId,
      trigger_event: trigger,
      commit_sha: trigger.commit_sha || "unknown",
      branch: trigger.branch || pipeline.branch,
      stages_completed: [],
      current_stage: null,
      agents_involved: [],
      artifacts_generated: [],
      test_results: this.initializeTestResults(),
      security_scan_results: this.initializeSecurityScanResults(),
      quality_metrics: this.initializeQualityMetrics(),
      status: "running",
      created_at: new Date(),
    };

    this.activeExecutions.set(executionId, execution);

    // Update pipeline metrics
    pipeline.metrics.total_runs++;
    pipeline.started_at = new Date();
    pipeline.status = "running";

    // Start execution
    this.executeWorkflow(execution, pipeline);

    this.emit("pipeline-triggered", { executionId, pipelineId, trigger });

    return executionId;
  }

  /**
   * Execute workflow with A2A coordination
   */
  private async executeWorkflow(
    execution: WorkflowExecution,
    pipeline: CICDPipeline,
  ): Promise<void> {
    try {
      // Execute stages in order, respecting dependencies
      const executionPlan = this.createExecutionPlan(pipeline.stages);

      for (const stageGroup of executionPlan) {
        // Execute stages in parallel within each group
        const stagePromises = stageGroup.map((stage) =>
          this.executeStage(execution, pipeline, stage),
        );

        await Promise.all(stagePromises);

        // Update execution progress
        execution.stages_completed.push(...stageGroup.map((s) => s.id));
      }

      // Finalize execution
      execution.status = "success";
      execution.completed_at = new Date();

      // Update pipeline metrics
      pipeline.status = "success";
      pipeline.completed_at = new Date();
      pipeline.duration =
        execution.completed_at.getTime() - execution.created_at.getTime();
      pipeline.metrics.last_success = execution.completed_at;

      this.emit("workflow-completed", { execution, pipeline });
    } catch (error) {
      // Handle execution failure
      execution.status = "failure";
      execution.completed_at = new Date();

      pipeline.status = "failure";
      pipeline.completed_at = new Date();
      pipeline.metrics.failure_count++;
      pipeline.metrics.last_failure = execution.completed_at;

      this.emit("workflow-failed", { execution, pipeline, error });

      // Attempt rollback if in deployment stage
      if (execution.deployment_info) {
        await this.attemptRollback(execution);
      }
    }
  }

  /**
   * Execute individual pipeline stage
   */
  private async executeStage(
    execution: WorkflowExecution,
    pipeline: CICDPipeline,
    stage: PipelineStage,
  ): Promise<void> {
    execution.current_stage = stage.id;
    stage.status = "running";
    stage.started_at = new Date();

    try {
      // Get assigned agents for this stage
      const assignedAgents = pipeline.agents_assigned[stage.id] || [];
      execution.agents_involved.push(...assignedAgents);

      // Execute stage jobs
      if (stage.parallel) {
        // Execute jobs in parallel
        const jobPromises = stage.jobs.map((job) =>
          this.executeJob(execution, pipeline, stage, job),
        );
        await Promise.all(jobPromises);
      } else {
        // Execute jobs sequentially
        for (const job of stage.jobs) {
          await this.executeJob(execution, pipeline, stage, job);
        }
      }

      // Collect stage artifacts
      await this.collectStageArtifacts(execution, stage);

      // Run stage-specific validations
      await this.validateStageResults(execution, stage);

      stage.status = "success";
      stage.completed_at = new Date();

      this.emit("stage-completed", {
        execution: execution.id,
        stage: stage.id,
      });
    } catch (error) {
      stage.status = "failure";
      stage.completed_at = new Date();

      // Apply retry policy if configured
      if (await this.shouldRetryStage(stage, error)) {
        await this.retryStage(execution, pipeline, stage);
      } else {
        throw error;
      }
    }
  }

  /**
   * Execute individual job within a stage
   */
  private async executeJob(
    execution: WorkflowExecution,
    pipeline: CICDPipeline,
    stage: PipelineStage,
    job: PipelineJob,
  ): Promise<void> {
    job.status = "running";

    try {
      // Find appropriate agent for job
      const agent = await this.findAgentForJob(job);
      if (!agent) {
        throw new Error(`No suitable agent found for job ${job.id}`);
      }

      // Prepare job context
      const jobContext = {
        job_id: job.id,
        execution_id: execution.id,
        pipeline_id: pipeline.id,
        stage_id: stage.id,
        commit_sha: execution.commit_sha,
        branch: execution.branch,
        environment_vars: stage.environment_vars,
        resources: job.resources,
      };

      // Execute job through A2A agent
      const result = await this.a2aIntegration.executeTask(agent.id, {
        type: "cicd_job",
        job: job,
        context: jobContext,
      });

      // Process job results based on type
      await this.processJobResults(execution, stage, job, result);

      job.status = "success";

      // Update agent performance metrics
      this.updateAgentPerformance(
        pipeline,
        agent.id,
        true,
        Date.now() - Date.now(),
      );
    } catch (error) {
      job.status = "failure";

      // Update agent performance metrics
      const agent = await this.findAgentForJob(job);
      if (agent) {
        this.updateAgentPerformance(
          pipeline,
          agent.id,
          false,
          Date.now() - Date.now(),
        );
      }

      throw error;
    }
  }

  /**
   * Process job results based on job type
   */
  private async processJobResults(
    execution: WorkflowExecution,
    stage: PipelineStage,
    job: PipelineJob,
    result: any,
  ): Promise<void> {
    switch (stage.type) {
      case "test":
        await this.processTestResults(execution, result);
        break;
      case "security":
        await this.processSecurityResults(execution, result);
        break;
      case "quality":
        await this.processQualityResults(execution, result);
        break;
      case "build":
        await this.processBuildResults(execution, result);
        break;
      case "deploy":
        await this.processDeploymentResults(execution, result);
        break;
    }
  }

  /**
   * Process test job results
   */
  private async processTestResults(
    execution: WorkflowExecution,
    result: any,
  ): Promise<void> {
    if (result.test_results) {
      execution.test_results.total_tests += result.test_results.total || 0;
      execution.test_results.passed_tests += result.test_results.passed || 0;
      execution.test_results.failed_tests += result.test_results.failed || 0;
      execution.test_results.skipped_tests += result.test_results.skipped || 0;

      if (result.test_results.coverage) {
        execution.test_results.coverage_percentage =
          result.test_results.coverage;
      }

      if (result.test_results.suites) {
        execution.test_results.test_suites.push(...result.test_results.suites);
      }

      if (result.test_results.benchmarks) {
        execution.test_results.performance_benchmarks.push(
          ...result.test_results.benchmarks,
        );
      }
    }
  }

  /**
   * Process security scan results
   */
  private async processSecurityResults(
    execution: WorkflowExecution,
    result: any,
  ): Promise<void> {
    if (result.security_results) {
      const securityResults = execution.security_scan_results;

      if (result.security_results.vulnerabilities) {
        securityResults.vulnerabilities.push(
          ...result.security_results.vulnerabilities,
        );
      }

      if (result.security_results.compliance_checks) {
        securityResults.compliance_checks.push(
          ...result.security_results.compliance_checks,
        );
      }

      if (result.security_results.secrets) {
        securityResults.secret_scan_results.push(
          ...result.security_results.secrets,
        );
      }

      if (result.security_results.dependencies) {
        securityResults.dependency_scan = result.security_results.dependencies;
      }

      if (result.security_results.score) {
        securityResults.overall_score = result.security_results.score;
      }
    }
  }

  /**
   * Process code quality results
   */
  private async processQualityResults(
    execution: WorkflowExecution,
    result: any,
  ): Promise<void> {
    if (result.quality_results) {
      const qualityMetrics = execution.quality_metrics;

      if (result.quality_results.coverage) {
        qualityMetrics.code_coverage = result.quality_results.coverage;
      }

      if (result.quality_results.quality_score) {
        qualityMetrics.code_quality_score =
          result.quality_results.quality_score;
      }

      if (result.quality_results.maintainability) {
        qualityMetrics.maintainability_index =
          result.quality_results.maintainability;
      }

      if (result.quality_results.technical_debt) {
        qualityMetrics.technical_debt = result.quality_results.technical_debt;
      }

      if (result.quality_results.complexity) {
        qualityMetrics.complexity_score = result.quality_results.complexity;
      }

      if (result.quality_results.duplication) {
        qualityMetrics.duplication_percentage =
          result.quality_results.duplication;
      }

      if (result.quality_results.violations) {
        qualityMetrics.rule_violations.push(
          ...result.quality_results.violations,
        );
      }
    }
  }

  /**
   * Process build results
   */
  private async processBuildResults(
    execution: WorkflowExecution,
    result: any,
  ): Promise<void> {
    if (result.artifacts) {
      execution.artifacts_generated.push(...result.artifacts);
    }
  }

  /**
   * Process deployment results
   */
  private async processDeploymentResults(
    execution: WorkflowExecution,
    result: any,
  ): Promise<void> {
    if (result.deployment_info) {
      execution.deployment_info = {
        environment: result.deployment_info.environment,
        strategy: result.deployment_info.strategy,
        version: result.deployment_info.version || execution.commit_sha,
        deployed_at: new Date(),
        health_status: result.deployment_info.health_status || "healthy",
        rollback_available: result.deployment_info.rollback_available || true,
        traffic_percentage: result.deployment_info.traffic_percentage || 100,
        performance_metrics: result.deployment_info.metrics || {},
      };

      // Start health monitoring
      await this.startHealthMonitoring(execution);
    }
  }

  /**
   * Start health monitoring for deployment
   */
  private async startHealthMonitoring(
    execution: WorkflowExecution,
  ): Promise<void> {
    if (!execution.deployment_info) return;

    const strategy = execution.deployment_info.strategy;

    // Create monitoring agents
    const monitoringAgents = await this.createMonitoringAgents(execution);

    // Start health checks
    for (const healthCheck of strategy.health_checks) {
      await this.scheduleHealthCheck(execution, healthCheck, monitoringAgents);
    }

    // Setup rollback triggers
    for (const trigger of strategy.rollback_triggers) {
      await this.setupRollbackTrigger(execution, trigger);
    }
  }

  /**
   * Assign agents to pipeline stages
   */
  private async assignAgentsToPipeline(pipeline: CICDPipeline): Promise<void> {
    for (const stage of pipeline.stages) {
      const assignedAgents: string[] = [];

      for (const agentType of stage.required_agents) {
        const agent = await this.findAvailableAgent(agentType);
        if (agent) {
          assignedAgents.push(agent.id);
        }
      }

      pipeline.agents_assigned[stage.id] = assignedAgents;
    }
  }

  /**
   * Create execution plan respecting stage dependencies
   */
  private createExecutionPlan(stages: PipelineStage[]): PipelineStage[][] {
    const plan: PipelineStage[][] = [];
    const completed = new Set<string>();
    const remaining = [...stages];

    while (remaining.length > 0) {
      const readyStages = remaining.filter((stage) =>
        stage.dependencies.every((dep) => completed.has(dep)),
      );

      if (readyStages.length === 0) {
        throw new Error("Circular dependency detected in pipeline stages");
      }

      plan.push(readyStages);

      // Mark stages as completed and remove from remaining
      for (const stage of readyStages) {
        completed.add(stage.id);
        const index = remaining.indexOf(stage);
        remaining.splice(index, 1);
      }
    }

    return plan;
  }

  /**
   * Find available agent for job execution
   */
  private async findAgentForJob(job: PipelineJob): Promise<A2AAgent | null> {
    // Get agents of the required type
    const candidates = Array.from(this.agentPool.values()).filter(
      (agent) => agent.type === job.agent_type && agent.status === "idle",
    );

    if (candidates.length === 0) return null;

    // Select agent with best performance and lowest workload
    const scored = candidates.map((agent) => ({
      agent,
      score: this.calculateAgentScore(agent, job),
    }));

    scored.sort((a, b) => b.score - a.score);
    return scored[0].agent;
  }

  /**
   * Calculate agent score for job assignment
   */
  private calculateAgentScore(agent: A2AAgent, job: PipelineJob): number {
    let score = 0;

    // Performance history (50% weight)
    const successRate =
      agent.metrics.tasks_completed /
      Math.max(1, agent.metrics.tasks_completed + 1);
    score += successRate * 50;

    // Capability match (30% weight)
    const capabilityMatch = agent.capabilities.includes(job.agent_type)
      ? 30
      : 0;
    score += capabilityMatch;

    // Current workload (20% weight) - lower is better
    const workloadScore = Math.max(0, 20 - agent.assigned_tasks.length * 5);
    score += workloadScore;

    return score;
  }

  /**
   * Update agent performance metrics
   */
  private updateAgentPerformance(
    pipeline: CICDPipeline,
    agentId: string,
    success: boolean,
    duration: number,
  ): void {
    if (!pipeline.metrics.agent_performance[agentId]) {
      pipeline.metrics.agent_performance[agentId] = {
        agent_id: agentId,
        tasks_completed: 0,
        success_rate: 0,
        average_duration: 0,
        failure_reasons: {},
      };
    }

    const performance = pipeline.metrics.agent_performance[agentId];
    performance.tasks_completed++;

    if (success) {
      performance.success_rate =
        (performance.success_rate * (performance.tasks_completed - 1) + 1) /
        performance.tasks_completed;
    } else {
      performance.success_rate =
        (performance.success_rate * (performance.tasks_completed - 1)) /
        performance.tasks_completed;
    }

    performance.average_duration =
      (performance.average_duration * (performance.tasks_completed - 1) +
        duration) /
      performance.tasks_completed;
  }

  /**
   * Attempt automatic rollback on deployment failure
   */
  private async attemptRollback(execution: WorkflowExecution): Promise<void> {
    if (!execution.deployment_info) return;

    console.log(`Attempting rollback for execution ${execution.id}`);

    // Create rollback agent
    const rollbackAgent = await this.findAvailableAgent("coordinator");
    if (!rollbackAgent) {
      console.error("No coordinator agent available for rollback");
      return;
    }

    // Execute rollback
    try {
      await this.a2aIntegration.executeTask(rollbackAgent.id, {
        type: "deployment_rollback",
        execution_id: execution.id,
        deployment_info: execution.deployment_info,
      });

      this.emit("rollback-completed", { execution: execution.id });
    } catch (error) {
      console.error(`Rollback failed for execution ${execution.id}:`, error);
      this.emit("rollback-failed", { execution: execution.id, error });
    }
  }

  // Utility methods for initialization
  private initializeTestResults(): TestResults {
    return {
      total_tests: 0,
      passed_tests: 0,
      failed_tests: 0,
      skipped_tests: 0,
      coverage_percentage: 0,
      test_suites: [],
      performance_benchmarks: [],
    };
  }

  private initializeSecurityScanResults(): SecurityScanResults {
    return {
      vulnerabilities: [],
      compliance_checks: [],
      secret_scan_results: [],
      dependency_scan: {
        total_dependencies: 0,
        vulnerable_dependencies: 0,
        outdated_dependencies: 0,
        license_issues: 0,
        dependency_details: [],
      },
      overall_score: 100,
    };
  }

  private initializeQualityMetrics(): QualityMetrics {
    return {
      code_coverage: 0,
      code_quality_score: 0,
      maintainability_index: 0,
      technical_debt: 0,
      complexity_score: 0,
      duplication_percentage: 0,
      rule_violations: [],
    };
  }

  private async findAvailableAgent(
    agentType: string,
  ): Promise<A2AAgent | null> {
    const candidates = Array.from(this.agentPool.values()).filter(
      (agent) => agent.type === agentType && agent.status === "idle",
    );

    return candidates.length > 0 ? candidates[0] : null;
  }

  private async shouldRetryStage(
    stage: PipelineStage,
    error: any,
  ): Promise<boolean> {
    // Implement retry logic based on stage retry policy
    return stage.retry_policy.max_attempts > 1;
  }

  private async retryStage(
    execution: WorkflowExecution,
    pipeline: CICDPipeline,
    stage: PipelineStage,
  ): Promise<void> {
    // Implement stage retry logic
    console.log(`Retrying stage ${stage.id} for execution ${execution.id}`);
  }

  private async collectStageArtifacts(
    execution: WorkflowExecution,
    stage: PipelineStage,
  ): Promise<void> {
    // Collect artifacts from stage
    for (const artifact of stage.artifacts) {
      if (artifact.required) {
        execution.artifacts_generated.push(artifact.name);
      }
    }
  }

  private async validateStageResults(
    execution: WorkflowExecution,
    stage: PipelineStage,
  ): Promise<void> {
    // Validate stage results based on stage type
    switch (stage.type) {
      case "test":
        if (execution.test_results.failed_tests > 0) {
          throw new Error(
            `Tests failed: ${execution.test_results.failed_tests} failures`,
          );
        }
        break;
      case "security":
        const criticalVulns =
          execution.security_scan_results.vulnerabilities.filter(
            (v) => v.severity === "critical",
          );
        if (criticalVulns.length > 0) {
          throw new Error(
            `Critical security vulnerabilities found: ${criticalVulns.length}`,
          );
        }
        break;
      case "quality":
        if (execution.quality_metrics.code_coverage < 80) {
          console.warn(
            `Low code coverage: ${execution.quality_metrics.code_coverage}%`,
          );
        }
        break;
    }
  }

  private async createMonitoringAgents(
    execution: WorkflowExecution,
  ): Promise<string[]> {
    // Create specialized monitoring agents for deployment
    const monitoringAgents: string[] = [];

    const monitorAgent = await this.findAvailableAgent("monitor");
    if (monitorAgent) {
      monitoringAgents.push(monitorAgent.id);
    }

    return monitoringAgents;
  }

  private async scheduleHealthCheck(
    execution: WorkflowExecution,
    healthCheck: HealthCheck,
    agents: string[],
  ): Promise<void> {
    // Schedule health check with monitoring agents
    console.log(`Scheduling health check for execution ${execution.id}`);
  }

  private async setupRollbackTrigger(
    execution: WorkflowExecution,
    trigger: RollbackTrigger,
  ): Promise<void> {
    // Setup rollback trigger monitoring
    console.log(`Setting up rollback trigger for execution ${execution.id}`);
  }

  private setupEventHandlers(): void {
    this.on("pipeline-timeout", (data) => {
      console.warn(`Pipeline timeout: ${data.pipelineId}`);
      // Handle pipeline timeout
    });

    this.on("agent-failure", (data) => {
      console.error(`Agent failure: ${data.agentId}`);
      // Handle agent failure and reassignment
    });
  }

  /**
   * Get orchestrator status
   */
  getStatus(): any {
    return {
      active_pipelines: this.pipelines.size,
      running_executions: Array.from(this.activeExecutions.values()).filter(
        (e) => e.status === "running",
      ).length,
      available_agents: Array.from(this.agentPool.values()).filter(
        (a) => a.status === "idle",
      ).length,
      deployment_strategies: this.deploymentStrategies.size,
    };
  }

  /**
   * Get pipeline metrics
   */
  getPipelineMetrics(pipelineId: string): PipelineMetrics | null {
    const pipeline = this.pipelines.get(pipelineId);
    return pipeline ? pipeline.metrics : null;
  }

  /**
   * Cancel pipeline execution
   */
  async cancelExecution(executionId: string): Promise<void> {
    const execution = this.activeExecutions.get(executionId);
    if (execution) {
      execution.status = "cancelled";
      execution.completed_at = new Date();

      // Notify all involved agents
      for (const agentId of execution.agents_involved) {
        await this.a2aIntegration.executeTask(agentId, {
          type: "cancel_task",
          execution_id: executionId,
        });
      }

      this.emit("execution-cancelled", { executionId });
    }
  }

  /**
   * Cleanup resources
   */
  async cleanup(): Promise<void> {
    // Cancel all active executions
    for (const executionId of this.activeExecutions.keys()) {
      await this.cancelExecution(executionId);
    }

    this.pipelines.clear();
    this.activeExecutions.clear();
    this.agentPool.clear();

    this.emit("cicd-orchestrator-shutdown");
  }
}