#!/usr/bin/env node
// ═══════════════════════════════════════════════════════════════════════════
// Infrastructure Knowledge Graph
// Kopplar affärskapacitet till underliggande infrastruktur
// ═══════════════════════════════════════════════════════════════════════════

/**
 * Exempel:
 * 
 * Capability: Mission Management
 *   ↓
 * Service: Mission Service
 *   ↓
 * ALB → EC2 → IAM Role → Security Group → Subnet → VPC
 *   ↓
 * RDS → Secrets → CloudWatch → Backup
 */

class InfrastructureKnowledgeGraph {
  constructor() {
    this.nodes = new Map();
    this.edges = new Map();
  }

  addNode(id, type, properties = {}) {
    this.nodes.set(id, {
      id,
      type,
      properties,
      discoveredAt: new Date().toISOString(),
      source: properties.source || 'unknown'
    });
    return this;
  }

  addEdge(from, to, type) {
    if (!this.edges.has(from)) {
      this.edges.set(from, []);
    }
    this.edges.get(from).push({ to, type });
    return this;
  }

  getDependencies(nodeId) {
    const deps = [];
    const visited = new Set();
    
    const visit = (id) => {
      if (visited.has(id)) return;
      visited.add(id);
      
      const edges = this.edges.get(id) || [];
      for (const edge of edges) {
        deps.push(edge.to);
        visit(edge.to);
      }
    };
    
    visit(nodeId);
    return deps;
  }

  toJSON() {
    return {
      nodes: Array.from(this.nodes.values()),
      edges: Array.from(this.edges.entries()).flatMap(([from, edges]) =>
        edges.map(e => ({ from, to: e.to, type: e.type }))
      ),
      metadata: {
        generatedAt: new Date().toISOString(),
        version: '1.0'
      }
    };
  }
}

// Exempel: aamos-ledger
function buildLedgerGraph() {
  const graph = new InfrastructureKnowledgeGraph();
  
  // Capability
  graph.addNode('capability-ledger', 'Capability', {
    name: 'Accounting / Bokföring',
    description: 'Dubbel bokföring med BAS-konton'
  });
  
  // Service
  graph.addNode('service-ledger', 'Service', {
    name: 'aamos-ledger',
    port: 3250,
    status: 'inactive' // STOP-001
  });
  
  // Compute
  graph.addNode('ec2-ledger', 'EC2', {
    instanceId: 'i-09b2204a52c2f33c9',
    type: 'r8g.4xlarge',
    status: 'running'
  });
  
  // Network
  graph.addNode('sg-ledger', 'SecurityGroup', {
    name: 'aamos-ledger-sg',
    rules: ['3250/tcp']
  });
  
  graph.addNode('subnet-ledger', 'Subnet', {
    cidr: '10.0.1.0/24'
  });
  
  graph.addNode('vpc-aamos', 'VPC', {
    id: 'vpc-0e880ea5814b9f1be',
    cidr: '10.0.0.0/16'
  });
  
  // Database
  graph.addNode('rds-ledger', 'RDS', {
    endpoint: 'platform-identity-core.cvi0qcksmsfj.eu-north-1.rds.amazonaws.com',
    engine: 'postgresql'
  });
  
  // Cache
  graph.addNode('redis-ledger', 'ElastiCache', {
    status: 'unknown'
  });
  
  // Secrets
  graph.addNode('secret-jwt', 'Secret', {
    name: 'aamos-ledger/prod/jwt-secret',
    rotation: false // STOP-013
  });
  
  graph.addNode('secret-db', 'Secret', {
    name: 'platform/prod/ledger-db-url',
    rotation: false // STOP-013
  });
  
  // Observability
  graph.addNode('cw-ledger', 'CloudWatch', {
    alarms: 0,
    logs: 0
  });
  
  // Edges
  graph.addEdge('capability-ledger', 'service-ledger', 'provides');
  graph.addEdge('service-ledger', 'ec2-ledger', 'runs-on');
  graph.addEdge('ec2-ledger', 'sg-ledger', 'secured-by');
  graph.addEdge('ec2-ledger', 'subnet-ledger', 'in');
  graph.addEdge('subnet-ledger', 'vpc-aamos', 'in');
  graph.addEdge('service-ledger', 'rds-ledger', 'uses');
  graph.addEdge('service-ledger', 'redis-ledger', 'uses');
  graph.addEdge('service-ledger', 'secret-jwt', 'authenticates-with');
  graph.addEdge('service-ledger', 'secret-db', 'connects-with');
  graph.addEdge('service-ledger', 'cw-ledger', 'monitored-by');
  
  return graph;
}

// CLI
if (process.argv[1] === new URL(import.meta.url).pathname) {
  const graph = buildLedgerGraph();
  console.log(JSON.stringify(graph.toJSON(), null, 2));
}

export { InfrastructureKnowledgeGraph, buildLedgerGraph };