docker-compose.yml

services:
  # 1. Database
  postgres:
    image: postgres:14-alpine
    container_name: cloudsync_db
    environment:
      POSTGRES_USER: cloudsync
      POSTGRES_PASSWORD: password
      POSTGRES_DB: cloudsync_db
    volumes:
      - postgres_data:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U cloudsync -d cloudsync_db"]
      interval: 5s
      timeout: 5s
      retries: 5

  # 2. Master Node
  master:
    build: 
      context: .
      dockerfile: Dockerfile
    container_name: cloudsync_master
    command: /app/master
    ports:
      - "8080:8080"   # HTTP API
      - "50051:50051" # gRPC
    environment:
      DATABASE_DSN: "host=postgres user=cloudsync password=password dbname=cloudsync_db port=5432 sslmode=disable"
      REPLICATION_FACTOR: "3"
    depends_on:
      postgres:
        condition: service_healthy
    volumes:
      - ./data_master:/data

  # 3. Agent Nodes (Scalable)
  agent:
    build: 
      context: .
      dockerfile: Dockerfile
    command: /app/agent start --port=5000
    environment:
      AUTO_REGISTER: "true"
      MASTER_ADDR: "master:50051"
      # If running 1 agent, we can hardcode this to localhost:5001 (mapped below)
      # If running multiple, this needs to be dynamic or use internal Docker IPs
      # For now, let's assume 1 Agent for easy localhost testing:
      ADVERTISED_URL: "http://localhost:5001" 
    volumes:
      - /data/storage
    depends_on:
      - master
    ports:
      # Map Host Port 5001 -> Container Port 5000
      # We use a range so if you scale up, it grabs 5002, 5003, etc.
      - "5001-5005:5000"

  # 4. Frontend (Next.js)
  frontend:
    build:
      context: .
      dockerfile: Dockerfile.frontend
    container_name: cloudsync_frontend
    ports:
      - "3000:3000"
    environment:
      # This variable is available at build time / server runtime
      # Ideally, for browser access, your Master URL should be public.
      NEXT_PUBLIC_MASTER_URL: "http://localhost:8080"
    depends_on:
      - master

volumes:
  postgres_data: