version: '3.8'

services:
  postgres:
    image: postgres:15
    container_name: postgres
    environment:
      POSTGRES_USER: sientia
      POSTGRES_PASSWORD: sientia
      POSTGRES_DB: sientia
    ports:
      - "5432:5432"
    volumes:
      - ./postgres_data:/var/lib/postgresql/data
    networks:
      - sientia-network

  

  couchbase:
    image: couchbase/server:7.2.0
    container_name: couchbase
    ports:
      - "8091:8091" # Admin UI and REST API
      - "8092:8092" # Query Service (N1QL)
      - "8093:8093" # Index Service
      - "8094:8094" # Search Service
      - "11210:11210" # Data Service (KV)
      - "18091:18091" # Analytics Service (if enabled)
    environment:
      CB_CLUSTER_USERNAME: sientia
      CB_CLUSTER_PASSWORD: sientia
      CB_CLUSTER_RAMSIZE: 256
      CB_CLUSTER_INDEX_RAMSIZE: 256
    volumes:
      - ./couchbase_data:/opt/couchbase/var
    networks:
      - sientia-network
    healthcheck:
      test: ["CMD-SHELL", "curl -f http://localhost:8091/pools/default || exit 1"]
      interval: 10s
      timeout: 10s
      retries: 5

  redis:
    image: redis:7-alpine # Using a lightweight Redis image
    container_name: redis
    ports:
      - "6379:6379"
    volumes:
      - ./redis_data:/data # Persist Redis data
    networks:
      - sientia-network

  redis-commander:
    image: rediscommander/redis-commander:latest
    container_name: redis-commander
    environment:
      REDIS_HOSTS: local:redis:6379 # Connects to the 'redis' service within the Docker network
    ports:
      - "8081:8081" # Access the Redis Commander UI on this port
    depends_on:
      - redis # Ensures Redis starts before Redis Commander
    networks:
      - sientia-network

  kafka:
    image: bitnami/kafka:3.7 # Using a specific Kafka version for stability
    container_name: kafka
    ports:
      - "9092:9092" # For clients connecting from the host machine or outside Docker network
    environment:
      # KRaft (Kafka Raft without Zookeeper) settings
      KAFKA_CFG_NODE_ID: '0'
      KAFKA_CFG_PROCESS_ROLES: 'broker,controller'
      KAFKA_CFG_CONTROLLER_LISTENER_NAMES: 'CONTROLLER'
      # Listeners: <PROTOCOL>://<HOST/IP>:<PORT>
      # PLAINTEXT_EXTERNAL for host access, INTERNAL for container-to-container communication
      KAFKA_CFG_LISTENERS: 'PLAINTEXT_EXTERNAL://0.0.0.0:9092,INTERNAL://0.0.0.0:19092,CONTROLLER://0.0.0.0:9093'
      # Advertised Listeners: How clients (including Kafka-UI) will connect
      KAFKA_CFG_ADVERTISED_LISTENERS: 'PLAINTEXT_EXTERNAL://localhost:9092,INTERNAL://kafka:19092'
      KAFKA_CFG_LISTENER_SECURITY_PROTOCOL_MAP: 'CONTROLLER:PLAINTEXT,PLAINTEXT_EXTERNAL:PLAINTEXT,INTERNAL:PLAINTEXT'
      KAFKA_CFG_INTER_BROKER_LISTENER_NAME: 'INTERNAL'
      KAFKA_CFG_CONTROLLER_QUORUM_VOTERS: '0@kafka:9093' # Node 0 is at kafka:9093 for controller comms

      # Single node cluster settings (important for KRaft single node)
      KAFKA_CFG_OFFSETS_TOPIC_REPLICATION_FACTOR: '1'
      KAFKA_CFG_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: '1'
      KAFKA_CFG_TRANSACTION_STATE_LOG_MIN_ISR: '1'
      KAFKA_CFG_DEFAULT_REPLICATION_FACTOR: '1' # For auto-created topics
      KAFKA_CFG_NUM_PARTITIONS: '1' # Default partitions for auto-created topics

      KAFKA_CFG_AUTO_CREATE_TOPICS_ENABLE: 'true' # Convenient for development
    volumes:
      - kafka_data:/bitnami/kafka # Bitnami Kafka data directory
    networks:
      - sientia-network
    healthcheck:
      # Checks if Kafka is ready by trying to list topics using the internal listener
      test: ["CMD-SHELL", "/opt/bitnami/kafka/bin/kafka-topics.sh --bootstrap-server kafka:19092 --list > /dev/null || exit 1"]
      interval: 30s
      timeout: 10s
      retries: 5

  kafka-ui:
    image: provectuslabs/kafka-ui:latest
    container_name: kafka-ui
    ports:
      - "8082:8080" # Kafka UI will be accessible on host's port 8082
    environment:
      KAFKA_CLUSTERS_0_NAME: sientia-local-kafka
      KAFKA_CLUSTERS_0_BOOTSTRAPSERVERS: kafka:19092 # Connects to Kafka's internal listener
      # DYNAMIC_CONFIG_ENABLED: 'true' # Optional: To allow config changes through UI
    depends_on:
      kafka: # Ensures Kafka starts and is healthy before Kafka UI
        condition: service_healthy
    networks:
      - sientia-network


networks:
  sientia-network:
    driver: bridge

volumes:
  postgres_data:
    driver: local
  couchbase_data:
    driver: local
  redis_data:
    driver: local
  kafka_data:
    driver: local