services:
  # Kafka in KRaft mode (combined controller + broker)
  kafka:
    image: confluentinc/cp-server:latest
    hostname: kafka
    container_name: kafka
    ports:
      - "29092:29092"
      - "9093:9093"
    environment:
      # KRaft settings
      KAFKA_NODE_ID: 1
      KAFKA_PROCESS_ROLES: broker,controller
      KAFKA_CONTROLLER_QUORUM_VOTERS: 1@kafka:9093
      CLUSTER_ID: 'MkU3OEVBNTcwNTJENDM2Qk'
      # Listeners
      KAFKA_LISTENERS: PLAINTEXT://0.0.0.0:9092,CONTROLLER://0.0.0.0:9093,EXTERNAL://0.0.0.0:29092
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:9092,EXTERNAL://localhost:29092
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,CONTROLLER:PLAINTEXT,EXTERNAL:PLAINTEXT
      KAFKA_CONTROLLER_LISTENER_NAMES: CONTROLLER
      KAFKA_INTER_BROKER_LISTENER_NAME: PLAINTEXT
      # Replication settings (single node)
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
      KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 1
      KAFKA_TRANSACTION_STATE_LOG_MIN_ISR: 1
      KAFKA_CONFLUENT_LICENSE_TOPIC_REPLICATION_FACTOR: 1
      KAFKA_CONFLUENT_BALANCER_TOPIC_REPLICATION_FACTOR: 1
      KAFKA_CONFLUENT_CLUSTER_LINK_METADATA_TOPIC_REPLICATION_FACTOR: 1
      # Performance
      KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 0
      # Disable confluent telemetry for local dev
      KAFKA_CONFLUENT_REPORTERS_TELEMETRY_AUTO_ENABLE: 'false'
      KAFKA_CONFLUENT_SECURITY_EVENT_LOGGER_ENABLE: 'false'
    healthcheck:
      test: ["CMD", "kafka-broker-api-versions", "--bootstrap-server", "localhost:9092"]
      interval: 10s
      timeout: 10s
      retries: 10
      start_period: 30s

  # Kafka Partition Remapping Proxy
  kafka-proxy:
    build:
      context: ..
      dockerfile: docker/Dockerfile
    container_name: kafka-proxy
    ports:
      - "19092:9092"  # Proxy port (mapped to host 19092)
      - "9090:9090"   # Metrics port
    environment:
      RUST_LOG: info
    volumes:
      - ./config-docker.yaml:/etc/kafka-proxy/config.yaml:ro
    depends_on:
      kafka:
        condition: service_healthy
    command: ["--config", "/etc/kafka-proxy/config.yaml"]

  # Prometheus (optional, for metrics visualization)
  prometheus:
    image: prom/prometheus:v2.47.0
    container_name: prometheus
    ports:
      - "9091:9090"
    volumes:
      - ./prometheus.yml:/etc/prometheus/prometheus.yml:ro
    depends_on:
      - kafka-proxy
    profiles:
      - monitoring