# RESTHeart Docker Compose Configuration
# Runs RESTHeart with MongoDB in replica set mode
name: restheart

services:
  # RESTHeart API server
  restheart:
    image: softinstigate/restheart:latest
    environment:
      # RHO (RESTHeart Overrides) - Override default configuration
      # Uses semicolon-separated XPath expressions to modify config
      # Note: Arrays use XPath 1.0 indexing (1-based, not 0-based)
      # Uncomment the commented line below to override the default mount and expose all databases at root
      RHO: >
        /mclient/connection-string->"mongodb://mongodb";
        /http-listener/host->"0.0.0.0";
      # /mongo/mongo-mounts[1]->{"what":"*","where":"/"};
    # Wait for MongoDB to be healthy before starting
    depends_on:
      mongodb:
        condition: service_healthy
    ports:
      - "8080:8080" # Expose RESTHeart API on http://localhost:8080

  # MongoDB database server
  mongodb:
    image: mongo:8.0
    # Run as replica set (required for change streams and transactions)
    command: ["--bind_ip_all", "--replSet", "rs0"]
    # Health check to initialize replica set
    healthcheck:
      test:
        [
          "CMD",
          "mongosh",
          "--quiet",
          "--eval",
          "'if (!rs.isMaster().ismaster) { rs.initiate(); }'",
        ]
      interval: 5s # Check every 5 seconds
      timeout: 10s # Wait up to 10 seconds for response
      retries: 5 # Retry 5 times before marking unhealthy
      start_period: 5s # Grace period before health checks start