@clduab11/gemini-flow/src/core/github-a2a-bridge.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 Bridge - Comprehensive integration between GitHub operations and A2A agent collaboration
 * Enables seamless cross-repository agent communication and coordinated workflows
 */

import { A2AIntegration } from "./a2a-integration.js";
import { A2ASecurityManager } from "./a2a-security-manager.js";
import { A2AZeroTrust } from "./a2a-zero-trust.js";
import { ModelOrchestrator } from "./model-orchestrator.js";
import { SwarmManager } from "./swarm-manager.js";
import { EventEmitter } from "events";

export interface GitHubA2AConfig {
  github: {
    token: string;
    apiUrl?: string;
    enterprise?: boolean;
  };
  a2a: {
    maxAgents: number;
    topology: "hierarchical" | "mesh" | "ring" | "star";
    security: "high" | "medium" | "low";
    crossRepo: boolean;
  };
  workflows: {
    prReview: boolean;
    issueTracking: boolean;
    cicd: boolean;
    release: boolean;
  };
}

export interface A2AAgent {
  id: string;
  type:
    | "coordinator"
    | "reviewer"
    | "tester"
    | "analyst"
    | "security"
    | "architect";
  capabilities: string[];
  repository?: string;
  assigned_tasks: string[];
  status: "idle" | "working" | "blocked" | "completed";
  metrics: {
    tasks_completed: number;
    reviews_performed: number;
    issues_resolved: number;
    uptime: number;
  };
}

export interface GitHubOperation {
  type: "pr" | "issue" | "release" | "workflow" | "security";
  action: string;
  repository: string;
  data: any;
  requiredAgents: string[];
  priority: "low" | "medium" | "high" | "critical";
  coordination: "sequential" | "parallel" | "adaptive";
}

export interface A2ACommunication {
  from: string;
  to: string | string[];
  type: "request" | "response" | "notification" | "coordination";
  payload: any;
  repository?: string;
  timestamp: Date;
  security_level: "public" | "internal" | "confidential" | "restricted";
}

export class GitHubA2ABridge extends EventEmitter {
  private config: GitHubA2AConfig;
  private a2aIntegration: A2AIntegration;
  private securityManager: A2ASecurityManager;
  private zeroTrust: A2AZeroTrust;
  private orchestrator: ModelOrchestrator;
  private swarmManager: SwarmManager;
  private agents: Map<string, A2AAgent> = new Map();
  private activeOperations: Map<string, GitHubOperation> = new Map();
  private communicationLog: A2ACommunication[] = [];

  constructor(config: GitHubA2AConfig) {
    super();
    this.config = config;
    this.a2aIntegration = new A2AIntegration();
    this.securityManager = new A2ASecurityManager();
    this.zeroTrust = new A2AZeroTrust();
    this.orchestrator = new ModelOrchestrator();
    this.swarmManager = new SwarmManager();

    this.setupEventHandlers();
  }

  /**
   * Initialize the GitHub-A2A bridge with agents and security
   */
  async initialize(): Promise<void> {
    try {
      // Initialize A2A security framework
      await this.securityManager.initialize();
      await this.zeroTrust.initialize();

      // Setup A2A agent swarm
      await this.initializeAgentSwarm();

      // Configure GitHub webhooks for A2A coordination
      await this.setupGitHubWebhooks();

      // Start cross-repository communication channels
      await this.establishCrossRepoChannels();

      this.emit("bridge-initialized", {
        agents: this.agents.size,
        repositories: this.getTrackedRepositories().length,
      });

      console.log("✅ GitHub-A2A Bridge initialized successfully");
    } catch (error) {
      console.error("❌ Failed to initialize GitHub-A2A Bridge:", error);
      throw error;
    }
  }

  /**
   * Initialize specialized A2A agents for different GitHub operations
   */
  private async initializeAgentSwarm(): Promise<void> {
    const agentConfigs = [
      {
        type: "coordinator" as const,
        capabilities: [
          "workflow-orchestration",
          "task-delegation",
          "conflict-resolution",
        ],
        count: 1,
      },
      {
        type: "reviewer" as const,
        capabilities: [
          "code-review",
          "security-analysis",
          "performance-assessment",
        ],
        count: 2,
      },
      {
        type: "tester" as const,
        capabilities: [
          "automated-testing",
          "integration-testing",
          "quality-assurance",
        ],
        count: 2,
      },
      {
        type: "analyst" as const,
        capabilities: [
          "issue-analysis",
          "requirement-analysis",
          "impact-assessment",
        ],
        count: 1,
      },
      {
        type: "security" as const,
        capabilities: [
          "vulnerability-scanning",
          "compliance-checking",
          "security-auditing",
        ],
        count: 1,
      },
      {
        type: "architect" as const,
        capabilities: [
          "system-design",
          "architecture-review",
          "scalability-analysis",
        ],
        count: 1,
      },
    ];

    for (const config of agentConfigs) {
      for (let i = 0; i < config.count; i++) {
        const agentId = `${config.type}-${i + 1}`;
        const agent: A2AAgent = {
          id: agentId,
          type: config.type,
          capabilities: config.capabilities,
          assigned_tasks: [],
          status: "idle",
          metrics: {
            tasks_completed: 0,
            reviews_performed: 0,
            issues_resolved: 0,
            uptime: 0,
          },
        };

        this.agents.set(agentId, agent);
        await this.a2aIntegration.registerAgent(agentId, config.capabilities);
      }
    }
  }

  /**
   * Setup GitHub webhooks for real-time A2A coordination
   */
  private async setupGitHubWebhooks(): Promise<void> {
    const webhookEvents = [
      "pull_request",
      "issues",
      "push",
      "release",
      "workflow_run",
      "check_run",
      "security_advisory",
    ];

    for (const event of webhookEvents) {
      await this.registerWebhookHandler(event);
    }
  }

  /**
   * Register webhook handler for GitHub events
   */
  private async registerWebhookHandler(event: string): Promise<void> {
    // In a real implementation, this would register with GitHub's webhook API
    this.on(`github-${event}`, async (payload: any) => {
      await this.handleGitHubEvent(event, payload);
    });
  }

  /**
   * Handle incoming GitHub events with A2A coordination
   */
  private async handleGitHubEvent(event: string, payload: any): Promise<void> {
    const operation: GitHubOperation = {
      type: this.mapEventToOperationType(event),
      action: payload.action || "unknown",
      repository: payload.repository?.full_name || "unknown",
      data: payload,
      requiredAgents: this.determineRequiredAgents(event, payload),
      priority: this.determinePriority(event, payload),
      coordination: this.determineCoordination(event, payload),
    };

    const operationId = `${operation.type}-${Date.now()}`;
    this.activeOperations.set(operationId, operation);

    await this.coordinateA2AResponse(operationId, operation);
  }

  /**
   * Coordinate A2A agent response to GitHub operations
   */
  private async coordinateA2AResponse(
    operationId: string,
    operation: GitHubOperation,
  ): Promise<void> {
    try {
      // Select and assign agents based on operation requirements
      const assignedAgents = await this.assignAgentsToOperation(operation);

      // Create coordination plan
      const plan = await this.createCoordinationPlan(operation, assignedAgents);

      // Execute coordinated response
      await this.executeCoordinatedResponse(operationId, plan);

      this.emit("operation-coordinated", {
        operationId,
        operation,
        assignedAgents,
      });
    } catch (error) {
      console.error(
        `Failed to coordinate A2A response for operation ${operationId}:`,
        error,
      );
      this.emit("operation-failed", { operationId, operation, error });
    }
  }

  /**
   * Assign A2A agents to GitHub operation based on requirements
   */
  private async assignAgentsToOperation(
    operation: GitHubOperation,
  ): Promise<A2AAgent[]> {
    const availableAgents = Array.from(this.agents.values()).filter(
      (agent) =>
        agent.status === "idle" &&
        this.agentCanHandleOperation(agent, operation),
    );

    const requiredCapabilities = this.getRequiredCapabilities(operation);
    const assignedAgents: A2AAgent[] = [];

    // Assign agents based on capability matching and load balancing
    for (const capability of requiredCapabilities) {
      const suitableAgent = availableAgents.find(
        (agent) =>
          agent.capabilities.includes(capability) &&
          !assignedAgents.includes(agent),
      );

      if (suitableAgent) {
        suitableAgent.status = "working";
        suitableAgent.assigned_tasks.push(operation.type);
        assignedAgents.push(suitableAgent);
      }
    }

    return assignedAgents;
  }

  /**
   * Create coordination plan for A2A agents
   */
  private async createCoordinationPlan(
    operation: GitHubOperation,
    agents: A2AAgent[],
  ): Promise<any> {
    const plan = {
      operation_id: `${operation.type}-${Date.now()}`,
      coordination_type: operation.coordination,
      phases: [],
      agents: agents.map((agent) => agent.id),
      estimated_duration: this.estimateOperationDuration(operation),
      dependencies: this.identifyDependencies(operation),
    };

    // Create phase-based execution plan
    switch (operation.type) {
      case "pr":
        plan.phases = await this.createPRReviewPlan(operation, agents);
        break;
      case "issue":
        plan.phases = await this.createIssueAnalysisPlan(operation, agents);
        break;
      case "release":
        plan.phases = await this.createReleasePlan(operation, agents);
        break;
      case "workflow":
        plan.phases = await this.createWorkflowPlan(operation, agents);
        break;
      case "security":
        plan.phases = await this.createSecurityPlan(operation, agents);
        break;
    }

    return plan;
  }

  /**
   * Execute coordinated A2A response
   */
  private async executeCoordinatedResponse(
    operationId: string,
    plan: any,
  ): Promise<void> {
    for (const phase of plan.phases) {
      if (plan.coordination_type === "parallel") {
        await Promise.all(
          phase.tasks.map((task: any) => this.executeTask(task)),
        );
      } else {
        for (const task of phase.tasks) {
          await this.executeTask(task);
        }
      }
    }

    // Mark operation as completed
    const operation = this.activeOperations.get(operationId);
    if (operation) {
      this.activeOperations.delete(operationId);
      this.emit("operation-completed", { operationId, operation });
    }
  }

  /**
   * Execute individual task with A2A agent
   */
  private async executeTask(task: any): Promise<void> {
    const agent = this.agents.get(task.agent_id);
    if (!agent) {
      throw new Error(`Agent ${task.agent_id} not found`);
    }

    try {
      // Execute task through A2A integration
      const result = await this.a2aIntegration.executeTask(task.agent_id, task);

      // Update agent metrics
      agent.metrics.tasks_completed++;

      // Send result to coordination layer
      await this.sendA2ACommunication({
        from: agent.id,
        to: "coordinator-1",
        type: "response",
        payload: { task_id: task.id, result },
        timestamp: new Date(),
        security_level: "internal",
      });
    } catch (error) {
      console.error(`Task execution failed for agent ${agent.id}:`, error);
      agent.status = "blocked";
      throw error;
    }
  }

  /**
   * Establish cross-repository communication channels
   */
  private async establishCrossRepoChannels(): Promise<void> {
    if (!this.config.a2a.crossRepo) return;

    // Setup secure channels for cross-repository agent communication
    const repositories = this.getTrackedRepositories();

    for (const repo of repositories) {
      await this.createRepositoryChannel(repo);
    }
  }

  /**
   * Send A2A communication between agents
   */
  private async sendA2ACommunication(
    communication: A2ACommunication,
  ): Promise<void> {
    // Apply security policies
    const secureComm =
      await this.securityManager.secureCommunication(communication);

    // Validate through zero-trust framework
    const validated = await this.zeroTrust.validateCommunication(secureComm);

    if (validated) {
      this.communicationLog.push(communication);
      this.emit("a2a-communication", communication);

      // Route to target agents
      if (Array.isArray(communication.to)) {
        for (const target of communication.to) {
          await this.deliverToAgent(target, communication);
        }
      } else {
        await this.deliverToAgent(communication.to, communication);
      }
    }
  }

  /**
   * Deliver communication to specific agent
   */
  private async deliverToAgent(
    agentId: string,
    communication: A2ACommunication,
  ): Promise<void> {
    const agent = this.agents.get(agentId);
    if (agent) {
      await this.a2aIntegration.deliverMessage(agentId, communication);
    }
  }

  // Utility methods for GitHub operation handling
  private mapEventToOperationType(event: string): GitHubOperation["type"] {
    const mapping: Record<string, GitHubOperation["type"]> = {
      pull_request: "pr",
      issues: "issue",
      release: "release",
      workflow_run: "workflow",
      security_advisory: "security",
    };
    return mapping[event] || "workflow";
  }

  private determineRequiredAgents(event: string, payload: any): string[] {
    // Logic to determine which agent types are needed for the event
    const agentMapping: Record<string, string[]> = {
      pull_request: ["reviewer", "tester", "security"],
      issues: ["analyst", "coordinator"],
      release: ["coordinator", "tester", "security"],
      workflow_run: ["coordinator", "tester"],
      security_advisory: ["security", "coordinator"],
    };
    return agentMapping[event] || ["coordinator"];
  }

  private determinePriority(
    event: string,
    payload: any,
  ): GitHubOperation["priority"] {
    // Determine priority based on event type and payload
    if (event === "security_advisory") return "critical";
    if (event === "release") return "high";
    if (payload.action === "opened" && event === "pull_request")
      return "medium";
    return "low";
  }

  private determineCoordination(
    event: string,
    payload: any,
  ): GitHubOperation["coordination"] {
    // Determine coordination strategy
    if (event === "pull_request") return "parallel";
    if (event === "release") return "sequential";
    return "adaptive";
  }

  private agentCanHandleOperation(
    agent: A2AAgent,
    operation: GitHubOperation,
  ): boolean {
    const requiredCapabilities = this.getRequiredCapabilities(operation);
    return requiredCapabilities.some((cap) => agent.capabilities.includes(cap));
  }

  private getRequiredCapabilities(operation: GitHubOperation): string[] {
    const capabilityMap: Record<string, string[]> = {
      pr: ["code-review", "automated-testing", "security-analysis"],
      issue: ["issue-analysis", "requirement-analysis"],
      release: ["workflow-orchestration", "quality-assurance"],
      workflow: ["workflow-orchestration", "automated-testing"],
      security: ["vulnerability-scanning", "security-auditing"],
    };
    return capabilityMap[operation.type] || [];
  }

  private estimateOperationDuration(operation: GitHubOperation): number {
    // Estimate duration in minutes based on operation type
    const durationMap: Record<string, number> = {
      pr: 30,
      issue: 15,
      release: 60,
      workflow: 20,
      security: 45,
    };
    return durationMap[operation.type] || 20;
  }

  private identifyDependencies(operation: GitHubOperation): string[] {
    // Identify dependencies for the operation
    return [];
  }

  private async createPRReviewPlan(
    operation: GitHubOperation,
    agents: A2AAgent[],
  ): Promise<any[]> {
    return [
      {
        name: "analysis",
        tasks: [
          {
            id: "analyze-changes",
            agent_id: agents.find((a) => a.type === "reviewer")?.id,
            type: "code-analysis",
          },
          {
            id: "security-scan",
            agent_id: agents.find((a) => a.type === "security")?.id,
            type: "security-check",
          },
        ],
      },
      {
        name: "testing",
        tasks: [
          {
            id: "run-tests",
            agent_id: agents.find((a) => a.type === "tester")?.id,
            type: "automated-testing",
          },
        ],
      },
      {
        name: "review",
        tasks: [
          {
            id: "provide-feedback",
            agent_id: agents.find((a) => a.type === "reviewer")?.id,
            type: "review-feedback",
          },
        ],
      },
    ];
  }

  private async createIssueAnalysisPlan(
    operation: GitHubOperation,
    agents: A2AAgent[],
  ): Promise<any[]> {
    return [
      {
        name: "triage",
        tasks: [
          {
            id: "analyze-issue",
            agent_id: agents.find((a) => a.type === "analyst")?.id,
            type: "issue-analysis",
          },
          {
            id: "assign-priority",
            agent_id: agents.find((a) => a.type === "coordinator")?.id,
            type: "priority-assignment",
          },
        ],
      },
    ];
  }

  private async createReleasePlan(
    operation: GitHubOperation,
    agents: A2AAgent[],
  ): Promise<any[]> {
    return [
      {
        name: "preparation",
        tasks: [
          {
            id: "validate-release",
            agent_id: agents.find((a) => a.type === "coordinator")?.id,
            type: "release-validation",
          },
          {
            id: "security-check",
            agent_id: agents.find((a) => a.type === "security")?.id,
            type: "security-validation",
          },
        ],
      },
    ];
  }

  private async createWorkflowPlan(
    operation: GitHubOperation,
    agents: A2AAgent[],
  ): Promise<any[]> {
    return [
      {
        name: "execution",
        tasks: [
          {
            id: "monitor-workflow",
            agent_id: agents.find((a) => a.type === "coordinator")?.id,
            type: "workflow-monitoring",
          },
        ],
      },
    ];
  }

  private async createSecurityPlan(
    operation: GitHubOperation,
    agents: A2AAgent[],
  ): Promise<any[]> {
    return [
      {
        name: "assessment",
        tasks: [
          {
            id: "vulnerability-scan",
            agent_id: agents.find((a) => a.type === "security")?.id,
            type: "vulnerability-assessment",
          },
          {
            id: "compliance-check",
            agent_id: agents.find((a) => a.type === "security")?.id,
            type: "compliance-validation",
          },
        ],
      },
    ];
  }

  private getTrackedRepositories(): string[] {
    // Return list of repositories being tracked
    return Array.from(
      new Set(
        Array.from(this.activeOperations.values()).map((op) => op.repository),
      ),
    );
  }

  private async createRepositoryChannel(repository: string): Promise<void> {
    // Create secure communication channel for repository
    await this.a2aIntegration.createChannel(`repo-${repository}`, {
      type: "repository",
      repository,
      security_level: "internal",
    });
  }

  private setupEventHandlers(): void {
    this.on("agent-status-changed", (agentId: string, status: string) => {
      const agent = this.agents.get(agentId);
      if (agent) {
        agent.status = status as any;
      }
    });

    this.on("operation-timeout", (operationId: string) => {
      const operation = this.activeOperations.get(operationId);
      if (operation) {
        console.warn(`Operation ${operationId} timed out`);
        this.activeOperations.delete(operationId);
      }
    });
  }

  /**
   * Get bridge status and metrics
   */
  getStatus(): any {
    return {
      agents: {
        total: this.agents.size,
        active: Array.from(this.agents.values()).filter(
          (a) => a.status === "working",
        ).length,
        idle: Array.from(this.agents.values()).filter(
          (a) => a.status === "idle",
        ).length,
      },
      operations: {
        active: this.activeOperations.size,
        completed: this.communicationLog.filter((c) => c.type === "response")
          .length,
      },
      repositories: this.getTrackedRepositories().length,
      uptime: process.uptime(),
    };
  }

  /**
   * Cleanup resources
   */
  async cleanup(): Promise<void> {
    // Reset all agents to idle
    for (const agent of this.agents.values()) {
      agent.status = "idle";
      agent.assigned_tasks = [];
    }

    // Clear active operations
    this.activeOperations.clear();

    // Cleanup A2A integration
    await this.a2aIntegration.cleanup();

    this.emit("bridge-shutdown");
  }
}