/**
 * Mesh Coordinator
 * Decentralized peer-to-peer coordination
 */

const SwarmUtils = require('./swarm-utils.cjs');

class MeshCoordinator {
  constructor(swarm) {
    this.swarm = swarm;
    this.peers = [];
    this.crdt = new Map();
  }

  initialize(peers = []) {
    console.log('🕸️  Initializing mesh coordinator...');
    this.peers = peers;

    this.swarm.log('info', `Mesh coordination mode activated with ${peers.length} peers`);

    // Initialize CRDT for conflict-free replication
    this.initializeCRDT();
  }

  initializeCRDT() {
    this.swarm.log('debug', 'Initializing CRDT for conflict-free replication');

    // Simple CRDT: Map-based G-Counter
    this.crdt = new Map();
  }

  async coordinate(task) {
    this.swarm.log('info', `Processing task on mesh: ${task}`);

    // Broadcast task to peers
    await this.broadcastTask(task);

    // Collect responses
    const responses = await this.collectResponses(task);

    // Merge responses using CRDT
    const result = this.mergeResponses(responses);

    return result;
  }

  async broadcastTask(task) {
    this.swarm.log('debug', `Broadcasting task to ${this.peers.length} peers`);

    // Simulate fan-out distribution (logN)
    const fanOut = Math.log2(this.peers.length + 1);

    for (let i = 0; i < fanOut; i++) {
      this.swarm.log('info', `Task sent to peer ${i + 1}/${fanOut}`);
    }
  }

  async collectResponses(task) {
    // Simulate collecting responses from peers
    const responses = [
      {
        peer: 'peer-1',
        agent: 'code-review-swarm',
        success: true,
        findings: ['Code analyzed', 'Issues found']
      },
      {
        peer: 'peer-2',
        agent: 'performance-optimizer',
        success: true,
        findings: ['Performance metrics collected']
      }
    ];

    return responses;
  }

  mergeResponses(responses) {
    // Merge responses using CRDT merge operation
    const result = {
      agent: 'mesh-aggregated',
      success: true,
      timestamp: Date.now(),
      responses: responses.length,
      findings: responses.flatMap(r => r.findings || []),
      merged: true
    };

    this.swarm.log('success', `Merged ${responses.length} peer responses`);

    return result;
  }

  async stopSync() {
    this.swarm.log('info', 'Mesh coordinator stopped');
  }
}

module.exports = MeshCoordinator;