/**
 * Monitoring service for Besu, Cacti, Firefly, and Chainlink CCIP
 * Simulates/metrics collection from these services
 */

import { DatabaseManager } from '../database';
import { BesuMetrics, CactiMetrics, FireflyMetrics, ChainlinkCCIPMetrics } from '../types';

export class MonitoringService {
  private db: DatabaseManager;

  constructor(db: DatabaseManager) {
    this.db = db;
  }

  /**
   * Collect Besu metrics
   */
  async collectBesuMetrics(environment: string, serviceName: string): Promise<BesuMetrics> {
    // Simulate Besu metrics (replace with actual Prometheus/API calls)
    const metrics: BesuMetrics = {
      blockNumber: Math.floor(Math.random() * 1000000) + 1000000,
      peerCount: Math.floor(Math.random() * 20) + 5,
      syncStatus: Math.random() > 0.1 ? 'synced' : 'syncing',
      gasPrice: `${Math.floor(Math.random() * 100) + 20} gwei`,
      networkId: 138,
      chainId: 138,
      pendingTransactions: Math.floor(Math.random() * 50),
      cpuUsage: Math.round((Math.random() * 40 + 20) * 100) / 100,
      memoryUsage: Math.round((Math.random() * 30 + 40) * 100) / 100,
      diskUsage: Math.round((Math.random() * 20 + 60) * 100) / 100,
    };

    // Store metrics
    this.db.insertServiceMetric(
      serviceName,
      'besu',
      'block_number',
      metrics.blockNumber,
      metrics.syncStatus === 'synced' ? 'healthy' : 'degraded',
      environment,
      'blocks'
    );

    this.db.insertServiceMetric(
      serviceName,
      'besu',
      'peer_count',
      metrics.peerCount,
      metrics.peerCount > 3 ? 'healthy' : 'degraded',
      environment,
      'peers'
    );

    this.db.insertServiceMetric(
      serviceName,
      'besu',
      'cpu_usage',
      metrics.cpuUsage,
      metrics.cpuUsage < 80 ? 'healthy' : metrics.cpuUsage < 90 ? 'degraded' : 'unhealthy',
      environment,
      'percent'
    );

    this.db.insertServiceMetric(
      serviceName,
      'besu',
      'memory_usage',
      metrics.memoryUsage,
      metrics.memoryUsage < 85 ? 'healthy' : metrics.memoryUsage < 95 ? 'degraded' : 'unhealthy',
      environment,
      'percent'
    );

    return metrics;
  }

  /**
   * Collect Cacti metrics
   */
  async collectCactiMetrics(environment: string, serviceName: string): Promise<CactiMetrics> {
    const metrics: CactiMetrics = {
      connectorCount: Math.floor(Math.random() * 10) + 3,
      activeConnections: Math.floor(Math.random() * 50) + 10,
      totalTransactions: Math.floor(Math.random() * 10000) + 1000,
      pendingTransactions: Math.floor(Math.random() * 20),
      failedTransactions: Math.floor(Math.random() * 10),
      averageLatency: Math.round((Math.random() * 200 + 50) * 100) / 100,
      cpuUsage: Math.round((Math.random() * 30 + 30) * 100) / 100,
      memoryUsage: Math.round((Math.random() * 25 + 50) * 100) / 100,
    };

    const healthStatus = metrics.failedTransactions < 5 && metrics.averageLatency < 500 
      ? 'healthy' 
      : metrics.failedTransactions < 10 && metrics.averageLatency < 1000 
        ? 'degraded' 
        : 'unhealthy';

    this.db.insertServiceMetric(
      serviceName,
      'cacti',
      'connector_count',
      metrics.connectorCount,
      healthStatus,
      environment,
      'connectors'
    );

    this.db.insertServiceMetric(
      serviceName,
      'cacti',
      'active_connections',
      metrics.activeConnections,
      healthStatus,
      environment,
      'connections'
    );

    this.db.insertServiceMetric(
      serviceName,
      'cacti',
      'failed_transactions',
      metrics.failedTransactions,
      healthStatus,
      environment,
      'transactions'
    );

    this.db.insertServiceMetric(
      serviceName,
      'cacti',
      'average_latency',
      metrics.averageLatency,
      healthStatus,
      environment,
      'ms'
    );

    return metrics;
  }

  /**
   * Collect Firefly metrics
   */
  async collectFireflyMetrics(environment: string, serviceName: string): Promise<FireflyMetrics> {
    const metrics: FireflyMetrics = {
      namespaceCount: Math.floor(Math.random() * 5) + 1,
      activeAPIs: Math.floor(Math.random() * 20) + 5,
      totalTransactions: Math.floor(Math.random() * 50000) + 5000,
      pendingTransactions: Math.floor(Math.random() * 30),
      failedTransactions: Math.floor(Math.random() * 15),
      averageLatency: Math.round((Math.random() * 150 + 30) * 100) / 100,
      cpuUsage: Math.round((Math.random() * 35 + 25) * 100) / 100,
      memoryUsage: Math.round((Math.random() * 30 + 45) * 100) / 100,
      databaseConnections: Math.floor(Math.random() * 20) + 5,
    };

    const healthStatus = metrics.failedTransactions < 10 && metrics.averageLatency < 300 
      ? 'healthy' 
      : metrics.failedTransactions < 20 && metrics.averageLatency < 600 
        ? 'degraded' 
        : 'unhealthy';

    this.db.insertServiceMetric(
      serviceName,
      'firefly',
      'namespace_count',
      metrics.namespaceCount,
      healthStatus,
      environment,
      'namespaces'
    );

    this.db.insertServiceMetric(
      serviceName,
      'firefly',
      'active_apis',
      metrics.activeAPIs,
      healthStatus,
      environment,
      'apis'
    );

    this.db.insertServiceMetric(
      serviceName,
      'firefly',
      'failed_transactions',
      metrics.failedTransactions,
      healthStatus,
      environment,
      'transactions'
    );

    this.db.insertServiceMetric(
      serviceName,
      'firefly',
      'database_connections',
      metrics.databaseConnections,
      healthStatus,
      environment,
      'connections'
    );

    return metrics;
  }

  /**
   * Collect Chainlink CCIP metrics
   */
  async collectChainlinkCCIPMetrics(environment: string, serviceName: string): Promise<ChainlinkCCIPMetrics> {
    const metrics: ChainlinkCCIPMetrics = {
      routerAddress: '0x' + Math.random().toString(16).substring(2, 42),
      activeChains: Math.floor(Math.random() * 5) + 2,
      totalMessages: Math.floor(Math.random() * 100000) + 10000,
      pendingMessages: Math.floor(Math.random() * 50),
      failedMessages: Math.floor(Math.random() * 20),
      averageLatency: Math.round((Math.random() * 300 + 100) * 100) / 100,
      tokenTransfers: Math.floor(Math.random() * 5000) + 500,
      feeTokenBalance: `${(Math.random() * 100 + 10).toFixed(4)} LINK`,
      cpuUsage: Math.round((Math.random() * 25 + 35) * 100) / 100,
      memoryUsage: Math.round((Math.random() * 20 + 55) * 100) / 100,
    };

    const healthStatus = metrics.failedMessages < 10 && metrics.averageLatency < 500 
      ? 'healthy' 
      : metrics.failedMessages < 20 && metrics.averageLatency < 1000 
        ? 'degraded' 
        : 'unhealthy';

    this.db.insertServiceMetric(
      serviceName,
      'chainlink-ccip',
      'active_chains',
      metrics.activeChains,
      healthStatus,
      environment,
      'chains'
    );

    this.db.insertServiceMetric(
      serviceName,
      'chainlink-ccip',
      'total_messages',
      metrics.totalMessages,
      healthStatus,
      environment,
      'messages'
    );

    this.db.insertServiceMetric(
      serviceName,
      'chainlink-ccip',
      'failed_messages',
      metrics.failedMessages,
      healthStatus,
      environment,
      'messages'
    );

    this.db.insertServiceMetric(
      serviceName,
      'chainlink-ccip',
      'average_latency',
      metrics.averageLatency,
      healthStatus,
      environment,
      'ms'
    );

    return metrics;
  }

  /**
   * Collect all service metrics for an environment
   */
  async collectAllMetrics(environment: string): Promise<{
    besu: BesuMetrics[];
    cacti: CactiMetrics[];
    firefly: FireflyMetrics[];
    chainlinkCcip: ChainlinkCCIPMetrics[];
  }> {
    // This would typically query the environment config to find services
    // For now, we'll use default service names
    const besuServices = [`${environment}-besu-validator-1`, `${environment}-besu-rpc-1`];
    const cactiServices = [`${environment}-cacti-1`];
    const fireflyServices = [`${environment}-firefly-1`];
    const chainlinkServices = [`${environment}-chainlink-ccip-1`];

    const results = {
      besu: [] as BesuMetrics[],
      cacti: [] as CactiMetrics[],
      firefly: [] as FireflyMetrics[],
      chainlinkCcip: [] as ChainlinkCCIPMetrics[],
    };

    for (const service of besuServices) {
      results.besu.push(await this.collectBesuMetrics(environment, service));
    }

    for (const service of cactiServices) {
      results.cacti.push(await this.collectCactiMetrics(environment, service));
    }

    for (const service of fireflyServices) {
      results.firefly.push(await this.collectFireflyMetrics(environment, service));
    }

    for (const service of chainlinkServices) {
      results.chainlinkCcip.push(await this.collectChainlinkCCIPMetrics(environment, service));
    }

    return results;
  }
}

