version: "3.9"

services:
  # 1) 本机 Consul agent（client）
  consul-agent:
    image: hashicorp/consul:1.21
    container_name: consul-agent
    network_mode: "host"   # 避免 8301/udp/lan gossip 的端口映射问题
    command: >
      agent
      -server=false
      -client=0.0.0.0
      -bind=${LOCAL_TS_IP}
      -advertise=${LOCAL_TS_IP}
      -retry-join=${CONSUL_SERVER_IP}
      -datacenter=${CONSUL_DC}
      -data-dir=/consul/data
      -leave-on-terminate
    volumes:
      - ./consul-data:/consul/data
    healthcheck:
      test: ["CMD-SHELL", "wget -qO- http://127.0.0.1:8500/v1/agent/self >/dev/null"]
      interval: 3s
      timeout: 2s
      retries: 60
    restart: unless-stopped

  # 2) 你的服务（示例：Python http.server）
  api:
    image: python:3.12-slim
    container_name: api
    command: ["python", "-m", "http.server", "${SERVICE_PORT}"]
    # 关键：只绑定到本机 Tailscale IP，避免暴露到 0.0.0.0
    ports:
      - "${LOCAL_TS_IP}:${SERVICE_PORT}:${SERVICE_PORT}"
    depends_on:
      consul-agent:
        condition: service_healthy
    restart: unless-stopped

  # 3) registrar 旁车：把服务注册到"云端" Consul（server）
  registrar:
    image: hashicorp/consul:1.21
    container_name: registrar
    network_mode: "host"
    depends_on:
      consul-agent:
        condition: service_healthy
      api:
        condition: service_started
    environment:
      SERVICE_NAME: "${SERVICE_NAME}"
      SERVICE_ADDR: "${LOCAL_TS_IP}"                    # 共用宿主 Tailscale IP
      SERVICE_PORT: "${SERVICE_PORT}"
      SERVICE_PROTOCOL: "http"                          # http | tcp
      ROUTE_HOST: "${ROUTE_HOST}"                       # 要暴露的域名
      CONSUL_HTTP_ADDR: "http://${CONSUL_SERVER_IP}:8500"
      CHECK_TYPE: "${CHECK_TYPE}"
      CHECK_PATH: "${CHECK_PATH}"
      CHECK_INTERVAL: "${CHECK_INTERVAL}"
      CHECK_TIMEOUT: "${CHECK_TIMEOUT}"
      DEREG_AFTER: "${DEREG_AFTER}"
      TRAEFIK_HTTP_ENTRYPOINT: "${TRAEFIK_HTTP_ENTRYPOINT}"
      TRAEFIK_TCP_ENTRYPOINT: "${TRAEFIK_TCP_ENTRYPOINT}"
      TRAEFIK_CERT_RESOLVER: "${TRAEFIK_CERT_RESOLVER}"
    volumes:
      - ./registrar.sh:/registrar.sh:ro
    entrypoint: ["/bin/sh","-lc","/registrar.sh"]
    restart: unless-stopped