kind: pipeline
type: docker
name: deploy

steps:
- name: submodules
  image: archlinux
  commands: 
  - pacman -Sy --noconfirm git git-lfs >/dev/null
  - git submodule update --init --recursive
  - cd blog
  - echo $(pwd)
  - git lfs install
  - git lfs fetch

- name: build
  image: archlinux
  environment:
    PYTHON_ENV: python python-pipenv python-setuptools

  commands:
    # set up python
    - pacman -Syu --noconfirm
    - pacman -Sy --noconfirm make $PYTHON_ENV > /dev/null
    - pipenv install

    # build site
    - make all

- name: deploy
  image: ubuntu
  environment:
    HOST:
      from_secret: host
    USER:
      from_secret: user
    SSH_KEY:
      from_secret: ssh_key

  commands:
    # install deps
    - apt-get update -qq > /dev/null
    - apt-get install ssh rsync -qq > /dev/null

    # configure ssh
    - eval $(ssh-agent -s)
    - mkdir -p ~/.ssh
    - echo "$SSH_KEY" > ~/.ssh/id_rsa
    - chmod 600 ~/.ssh/id_rsa
    - ssh-add
    - echo "Host *\n\tStrictHostKeyChecking no\n\n" > ~/.ssh/config

    # prepare vars for host operations
    - host_dir="/var/www/$${HOST}"
    - backup_dir="~/backups/$${HOST}/$${HOST}-$${DRONE_STAGE_STARTED}"
    - host="$${USER}@$${HOST}"

    # tasks
    - make_backup_dir="mkdir -p $backup_dir"
    - copy_backup_files="rsync -rP $host_dir $backup_dir"
    - delete_current_files="sudo -n rm -r $host_dir"
    - deploy_new_files="sudo -n mv $${HOST} $host_dir"

    # archive old site
    - ssh $host $make_backup_dir
    - ssh $host $copy_backup_files

    # deploy new site
    - rsync -rP site/* "$host:$${HOST}"
    - ssh $host $delete_current_files
    - ssh $host $deploy_new_files
  when:
    branch:
    - main
    event:
      exclude:
      - pull_request