version: "3.9"

services:

  #######################
  # MYSQL - DBMS
  #######################

  db:
    # if we're using mysql >= 8, some of sql queries aren't valid anymore, like for creating and grant an user at the same time

    # This is fixed in pyros.py

    container_name: pyros-db

    image: mysql:8.0.28

    restart: always

    command: --default-authentication-plugin=mysql_native_password
    environment:
      # note : as db is an image of mysql, this root password will be set on the first installation on the image, if the value is changed, it will not be updated in the database
      - "MYSQL_ROOT_PASSWORD=${MYSQL_ROOT_PASSWORD:-root}"
      - VNC_NO_PASSWORD=1
    volumes:
      - db:/var/lib/mysql/

    deploy:  
      restart_policy:
        condition: on-failure

        max_attempts: 5

      resources:
          limits:
            cpus: '0.5'
            memory: 1GB

            #pids: 1      

    # create network to allow images to communicate with other images within the same network 

    # networks: 
    #   pyros-network: 
    #     ipv4_address: 172.19.0.2

    healthcheck:
      test: ["CMD", 'mysqladmin', 'ping', '-h', 'db', '-u', 'root', '-p$$MYSQL_ROOT_PASSWORD' ]
      timeout: 10s
      interval: 5s
      retries: 20

  ######################################################
  # REDIS - in memory communication bus (for websockets)
  ######################################################

  redis:

    container_name: pyros-redis

    image: redis:latest
    restart: always

    ports:
      - "6379:6379"

    deploy:  
      restart_policy:
        condition: on-failure

        max_attempts: 5

      resources:
          limits:
            cpus: '1'
            memory: 1GB

            #pids: 1      

    healthcheck:
      test: ["CMD", "redis-cli","ping"]
      timeout: 10s
      interval: 5s
      retries: 20

    # networks: 
    #   pyros-network:  
    #     ipv4_address: 172.19.0.5

  ######################################################
  # PYROS (main image : docker_pyros) => defined in Dockerfile
  # Ubuntu OS with Python3 and PyROS requirements installed
  # PyROS will later be installed on this image with "pyros.py install" (PYROS_DOCKER_INSTALL)
  ######################################################

  pyros:

    container_name: pyros
    restart: always    

    #read_only: true

    # app/pyros is equivalent to your PYROS_SOFT/PYROS/ directory
    # Change "pyros" to whatever you want for the PYROS/ dir name (if you do not want "PYROS")

    working_dir: 
      /home/pyros_user/app/pyros 

    # path to the Dockerfile of this image

    environment:

      # environment variables only for Docker
      - WITH_DOCKER=y

      # disabling other env variables because they will override those from the env_file
      # - MYSQL_ROOT_LOGIN=root
      # - MYSQL_TCP_PORT=3306

      # environment variables available for both Docker usage and non Docker usage

      # - "MYSQL_ROOT_PASSWORD=${MYSQL_ROOT_PASSWORD:-root}"
      # - "MYSQL_PYROS_LOGIN=${MYSQL_PYROS_LOGIN:-pyros}"
      # - "MYSQL_PYROS_PWD=${MYSQL_PYROS_PWD:-DjangoPyros}"

      #- "IP_PYROS_USER=${IP_PYROS_USER:-172.28.1.5}"

    env_file: 
      - .env

    build: 
      args:
        uid: ${CURRENT_UID}
      context: ..

        #filename: Dockerfile

    hostname: ${COMPUTER_HOSTNAME}

    # tty is the -t option in docker exec 
    tty: true
    # stdin_open is the -i option in docker exec
    stdin_open: true

    volumes:

      - ../..:/home/pyros_user/app

    # tells which port of local machine can communicate with the docker image (host:container), host is your local machine
    ports:

      - "${PYROS_WEBSITE_PORT:-8000}:${PYROS_WEBSITE_PORT:-8000}"

      - 5900:5900

    # starting db service before install service 
    depends_on:
      - db

      - redis

    links:
      - db
      - redis

    deploy:
      restart_policy:
        condition: on-failure
        max_attempts: 5
      resources:
        limits:
          cpus: '1'
          memory: 8GB
          #pids: 1      

    # create network to allow images to communicate with other images within the same network 

    # networks: 
    #   pyros-network:
    #     ipv4_address: 172.19.0.3

        #ipv4_address: "${IP_PYROS_USER}"

    healthcheck:
      test: ["CMD", "python3","-V"]
      timeout: 10s
      interval: 5s
      retries: 20

  ######################################################
  # PHPMYADMIN (to interact manually with mysql db)
  # (dev only)
  ######################################################

  phpmyadmin:

    container_name: pyros-pma

    image: phpmyadmin/phpmyadmin
    restart: always    

    links:
      - db
    environment:
      PMA_HOST: db
      PMA_PORT: 3306
      PMA_ARBITRARY: 1

    env_file: 
      - .env
    # networks: 
    #   pyros-network:
    #     ipv4_address: 172.19.0.4
    ports:
      - "${PHPMYADMIN_PORT:-8081}:80"

    deploy:  
      restart_policy:
        condition: on-failure
        max_attempts: 5
      resources:
          limits:
            cpus: '1'
            memory: 1GB
            #pids: 1

    healthcheck:
      test: ["CMD", 'mysqladmin', 'ping', '-h', 'db', '-u', 'root', '-p$$MYSQL_ROOT_PASSWORD' ]
      timeout: 10s
      interval: 5s
      retries: 20

######################################################
# Declaring volumes
######################################################

volumes:
  db:
    driver: local

######################################################
# Declaring networks
######################################################

# networks: 
#   pyros-network:
#     #bridge is the default network driver
#     driver: bridge
#     ipam:
#       config:
#         - subnet: 172.19.0.0/16
#           gateway: 172.19.0.1