# Local test rig for the Postfix -> LMTP -> pneumatube wiring, matching the
# shape of a real deployment: Postfix owns the SMTP side, pneumatube is its
# LMTP delivery backend. This is NOT the recommended production topology —
# a real deployment runs Postfix on the host with real TLS/DNS, not in a
# container (see the project's Postfix wiring notes); this rig has no TLS,
# no abuse limits, and trusts every connecting host (mynetworks=0.0.0.0/0).
#
# Requires PNEUMATUBE_SMOLMAIL_DOMAIN and PNEUMATUBE_SMTP_RELAY_HOST set in
# the environment or a .env file. The gateway's own smolmail account must
# already be registered against that server before pneumatube can run —
# the same bootstrap as any smolmail client, using the fumi CLI that ships
# inside the image and ./data as --key/--db:
#
#   docker compose run --rm pneumatube \
#     fumi --key /data/gateway.key --db /data/gateway.db keygen
#   docker compose run --rm pneumatube \
#     fumi --key /data/gateway.key --db /data/gateway.db trust <host> <server-key>
#   docker compose run --rm pneumatube \
#     fumi --key /data/gateway.key --db /data/gateway.db register <user>@<host>

services:
  pneumatube:
    # The build context is the parent directory, because Cargo path-depends
    # on the sibling fumi checkout (../fumi/core) for the smolmail protocol.
    build:
      context: ..
      dockerfile: pneumatube/Dockerfile
    volumes:
      - ./data:/data
    environment:
      PNEUMATUBE_SMOLMAIL_KEY: /data/gateway.key
      PNEUMATUBE_SMOLMAIL_DB: /data/gateway.db
      PNEUMATUBE_SMOLMAIL_DOMAIN: ${PNEUMATUBE_SMOLMAIL_DOMAIN:?set the smolmail server address}
      PNEUMATUBE_EMAIL_DOMAIN: ${PNEUMATUBE_EMAIL_DOMAIN:-gateway.example}
      PNEUMATUBE_LISTEN_PROTOCOL: lmtp
      PNEUMATUBE_LISTEN_HOST: 0.0.0.0
      PNEUMATUBE_LISTEN_PORT: "2424"
      PNEUMATUBE_LOOKUP_HOST: 0.0.0.0
      PNEUMATUBE_LOOKUP_PORT: "2526"
      PNEUMATUBE_REQUIRE_ACCEPTED_SENDER: ${PNEUMATUBE_REQUIRE_ACCEPTED_SENDER:-1}
      PNEUMATUBE_REQUIRE_ACCEPTED_RECIPIENT: ${PNEUMATUBE_REQUIRE_ACCEPTED_RECIPIENT:-1}
      PNEUMATUBE_SMTP_RELAY_HOST: ${PNEUMATUBE_SMTP_RELAY_HOST:?set an outbound relay host}
      PNEUMATUBE_SMTP_RELAY_PORT: ${PNEUMATUBE_SMTP_RELAY_PORT:-587}
      PNEUMATUBE_SMTP_RELAY_USER: ${PNEUMATUBE_SMTP_RELAY_USER:-}
      PNEUMATUBE_SMTP_RELAY_PASSWORD: ${PNEUMATUBE_SMTP_RELAY_PASSWORD:-}
      PNEUMATUBE_SMTP_RELAY_STARTTLS: ${PNEUMATUBE_SMTP_RELAY_STARTTLS:-1}
      PNEUMATUBE_GATEWAY_FROM_ADDRESS: ${PNEUMATUBE_GATEWAY_FROM_ADDRESS:-gateway@gateway.example}

  postfix:
    build: ./docker/postfix
    depends_on:
      - pneumatube
    environment:
      POSTFIX_RELAY_DOMAIN: ${PNEUMATUBE_EMAIL_DOMAIN:-gateway.example}
      PNEUMATUBE_HOST: pneumatube
      PNEUMATUBE_PORT: "2424"
      PNEUMATUBE_LOOKUP_PORT: "2526"
    ports:
      - "2525:25"