# Docker Compose Override for Redis Support
# 
# This file extends the base docker-compose.yml with Redis services.
# 
# Usage:
#   docker-compose -f docker-compose.yml -f docker-compose.redis.yml up -d
#
# Or merge into your main docker-compose.yml

version: '3.8'

services:
  # Redis service for caching, sessions, and rate limiting
  redis:
    image: redis:7-alpine
    container_name: trackeep-redis
    restart: unless-stopped
    volumes:
      - redis_data:/data
      - ./redis.conf:/usr/local/etc/redis/redis.conf:ro
    command: >
      sh -c "redis-server /usr/local/etc/redis/redis.conf
      --requirepass $${REDIS_PASSWORD:-changeme}"
    environment:
      - REDIS_PASSWORD=${REDIS_PASSWORD:-changeme}
    networks:
      - trackeep-network
    healthcheck:
      test: ["CMD", "redis-cli", "-a", "${REDIS_PASSWORD:-changeme}", "ping"]
      interval: 10s
      timeout: 5s
      retries: 3
      start_period: 10s
    # Security: Only expose to internal network, not external
    # ports:
    #   - "127.0.0.1:6379:6379"  # Uncomment for local debugging only
    labels:
      - "traefik.enable=false"
    deploy:
      resources:
        limits:
          memory: 512M
        reservations:
          memory: 128M

  # Backend service with Redis environment variables
  trackeep-backend:
    environment:
      # Redis Configuration
      - REDIS_ADDR=${REDIS_ADDR:-redis:6379}
      - REDIS_PASSWORD=${REDIS_PASSWORD}
      - REDIS_DB=${REDIS_DB:-0}
      - REDIS_POOL_SIZE=${REDIS_POOL_SIZE:-20}
      - REDIS_DIAL_TIMEOUT=${REDIS_DIAL_TIMEOUT:-5s}
      - REDIS_READ_TIMEOUT=${REDIS_READ_TIMEOUT:-3s}
      - REDIS_WRITE_TIMEOUT=${REDIS_WRITE_TIMEOUT:-3s}
      # Feature Flags
      - REDIS_SESSIONS_ENABLED=${REDIS_SESSIONS_ENABLED:-true}
      - REDIS_CACHE_ENABLED=${REDIS_CACHE_ENABLED:-true}
      - REDIS_RATELIMIT_ENABLED=${REDIS_RATELIMIT_ENABLED:-true}
      - REDIS_PUBSUB_ENABLED=${REDIS_PUBSUB_ENABLED:-true}
    depends_on:
      redis:
        condition: service_healthy
      postgres:
        condition: service_healthy

  # Redis Commander - Optional Redis management UI
  # Uncomment to enable web-based Redis management at http://localhost:8081
  # redis-commander:
  #   image: rediscommander/redis-commander:latest
  #   container_name: trackeep-redis-commander
  #   restart: unless-stopped
  #   environment:
  #     - REDIS_HOST=redis
  #     - REDIS_PORT=6379
  #     - REDIS_PASSWORD=${REDIS_PASSWORD}
  #   ports:
  #     - "127.0.0.1:8081:8081"
  #   networks:
  #     - trackeep-network
  #   depends_on:
  #     - redis

volumes:
  # Redis persistent data volume
  redis_data:
    driver: local

networks:
  trackeep-network:
    driver: bridge

# =============================================================================
# REDIS SENTINEL CONFIGURATION (For High Availability)
# =============================================================================
# Uncomment this section and comment out the single Redis instance above
# to enable Redis Sentinel for automatic failover
#
# services:
#   redis-master:
#     image: redis:7-alpine
#     container_name: trackeep-redis-master
#     volumes:
#       - redis_master_data:/data
#     command: >
#       sh -c "redis-server
#       --appendonly yes
#       --maxmemory 256mb
#       --maxmemory-policy allkeys-lru
#       --requirepass $${REDIS_PASSWORD}"
#     networks:
#       - trackeep-network
#
#   redis-replica-1:
#     image: redis:7-alpine
#     container_name: trackeep-redis-replica-1
#     volumes:
#       - redis_replica1_data:/data
#     command: >
#       sh -c "redis-server
#       --appendonly yes
#       --replicaof redis-master 6379
#       --masterauth $${REDIS_PASSWORD}
#       --requirepass $${REDIS_PASSWORD}"
#     networks:
#       - trackeep-network
#     depends_on:
#       - redis-master
#
#   redis-replica-2:
#     image: redis:7-alpine
#     container_name: trackeep-redis-replica-2
#     volumes:
#       - redis_replica2_data:/data
#     command: >
#       sh -c "redis-server
#       --appendonly yes
#       --replicaof redis-master 6379
#       --masterauth $${REDIS_PASSWORD}
#       --requirepass $${REDIS_PASSWORD}"
#     networks:
#       - trackeep-network
#     depends_on:
#       - redis-master
#
#   redis-sentinel-1:
#     image: redis:7-alpine
#     container_name: trackeep-sentinel-1
#     command: >
#       sh -c "echo 'sentinel monitor mymaster redis-master 6379 2' > /etc/sentinel.conf &&
#              echo 'sentinel auth-pass mymaster $${REDIS_PASSWORD}' >> /etc/sentinel.conf &&
#              echo 'sentinel down-after-milliseconds mymaster 5000' >> /etc/sentinel.conf &&
#              echo 'sentinel failover-timeout mymaster 60000' >> /etc/sentinel.conf &&
#              redis-sentinel /etc/sentinel.conf"
#     networks:
#       - trackeep-network
#     depends_on:
#       - redis-master
#       - redis-replica-1
#       - redis-replica-2
#
# volumes:
#   redis_master_data:
#   redis_replica1_data:
#   redis_replica2_data: