version: '3'

services:

  huginn:
    deploy:
      placement:
        constraints: [node.labels.com.sigyl.git-stack == yes]
      replicas: 1
      restart_policy:
        condition: any
    image: huginn/huginn
    environment:
      # For huginn/huginn - essential
      - SMTP_DOMAIN=your-domain-here.com
      - SMTP_USER_NAME=you@gmail.com
      - SMTP_PASSWORD=somepassword
      - SMTP_SERVER=your-mailserver-here.com
      - SMTP_PORT=587
      - SMTP_AUTHENTICATION=plain
      - SMTP_ENABLE_STARTTLS_AUTO=true
      - INVITATION_CODE=<set an invitation code here>
      - POSTGRES_PORT_5432_TCP_ADDR=db
      - POSTGRES_PORT_5432_TCP_PORT=5432
      - DATABASE_USERNAME=huginn
      - DATABASE_PASSWORD=<database password>
      - DATABASE_ADAPTER=postgresql
    volumes:
      - /etc/localtime:/etc/localtime:ro
    networks:
      - appnet
      - externalnet

  db:
    deploy:
      placement:
        constraints: [node.labels.com.sigyl.git-stack-data == yes]
      replicas: 1
      restart_policy:
        condition: any
    environment:
      - POSTGRES_USER=huginn
      - POSTGRES_PASSWORD=<database password>
      - BACKUP_NUM_KEEP=7
      - BACKUP_FREQUENCY=1d
    image: postgres:latest
    volumes:
      - db:/var/lib/postgresql/data
      - /etc/localtime:/etc/localtime:ro
    networks:
      - appnet
      - externalnet

  db-backup:
    deploy:
      placement:
        constraints: [node.labels.com.sigyl.git-stack-data == yes]
      replicas: 1
      restart_policy:
        condition: any
    image: postgres:latest
    environment:
      - POSTGRES_USER=huginn
      - POSTGRES_PASSWORD=<database password>
      - BACKUP_NUM_KEEP=7
      - BACKUP_FREQUENCY=1d
    volumes:
      - db-dump:/dump
      - /etc/localtime:/etc/localtime:ro
    entrypoint: |
      bash -c 'bash -s <<EOF
      trap "break;exit" SIGHUP SIGINT SIGTERM
      sleep 2m
      while /bin/true; do
        pg_dump -Fc > /dump/dump_\`date +%d-%m-%Y"_"%H_%M_%S\`.psql
        (ls -t /dump/dump*.psql|head -n $$BACKUP_NUM_KEEP;ls /dump/dump*.psql)|sort|uniq -u|xargs rm -- {}
        sleep $$BACKUP_FREQUENCY
      done
      EOF'
    networks:
      - appnet
      - externalnet

volumes:
  db:
  db-dump:

networks:
  externalnet:
    external: true
    driver: overlay
  appnet:
    driver: overlay