name: Jekyll
on:
  push:
    branches:
      - main
  pull_request:

env:
  _UID: 1000
  _GID: 1000
  WEB_DOMAIN: lafs.eval.latfa.net
  WEB_USER: www
  WEB_DIR: /var/www
jobs:
  jekyll:
    runs-on: ubuntu-22.04
    steps:
      - name: Check out repository
        id: checkout
        uses: actions/checkout@v4
      - name: Change file ownership
        id: file_ownership
        run: |
          chown -R ${_UID}:${_GID} .
      - name: Install requirements
        id: install_requirements
        run: |
          apt-get -q update
          apt-get -q install -y docker-compose rsync
          apt-get -q clean
      - name: Verify docker
        id: verify_docker
        run: |
          docker run --rm hello-world:latest > /dev/null
          docker rmi hello-world:latest > /dev/null
          docker version
          docker-compose version
          docker volume ls
      - name: Build Jekyll image
        id: build_image
        run: |
          # The environment variables _UID and _GID can impact this image
          docker-compose build jekyll
      - name: Build Jekyll site
        id: build_site
        run: |
          docker-compose run --rm -v "${JOB_CONTAINER_NAME}:/site" -w /site \
          jekyll build --verbose
        continue-on-error: true
      - name: Prepare ssh key
        id: prepare_ssh_key
        if: ${{ gitea.ref == 'refs/heads/main' }}
        run: |
          echo "${{ secrets.WWW_DEPLOY_KEY }}" > ~/.ssh/id_ed25519
          chmod 600 ~/.ssh/id_ed25519
      - name: Deploy Jekyll site
        id: deploy_site
        run: |
          if [ "${{ gitea.ref }}" = 'refs/heads/main' ]; then
            WEB_ROOT="${WEB_DIR}/site"
            WEB_HOST="www.${WEB_DOMAIN}"
            WEB_CONTEXT='/'
          else
            WEB_ROOT="${WEB_DIR}/preview"
            WEB_HOST="preview.${WEB_DOMAIN}"
            WEB_CONTEXT='/${{ gitea.event.pull_request.number }}/'
          end
          # Save those variabes in the environment for the next steps
          echo "WEB_HOST=${WEB_HOST}" >> $GITEA_ENV
          echo "WEB_CONTEXT=${WEB_CONTEXT}" >> $GITEA_ENV
          # Synchronize the local and the remote site
          rsync -halvi --delete \
            -e "ssh -a -x -o StrictHostKeyChecking=no" \
            "./_site/" "${WEB_USER}@${WEB_DOMAIN}:${WEB_ROOT}${WEB_CONTEXT}"
      - name: Comment pull request
        id: comment_pull_request
        if: gitea.event_name == 'pull_request'
        uses: exercism/pr-commenter-action@v1.5.1
        with:
          template-variables: |
            {
              "imageOutcome": "${{ steps.build_image.outcome }}",
              "buildOutcome": "${{ steps.build_site.outcome }}",
              "buildOutputsResult": ${{ toJSON(steps.build_site.outputs.result) }},
              "deployOutcome": "${{ steps.deploy_site.outcome }}",
              "deployWebHost": "${{ env.WEB_HOST }}",
              "deployWebContext": "${{ env.WEB_CONTEXT }}",
              "gitActor": "${{ gitea.actor }}",
              "gitEventName": "${{ gitea.event_name }}",
              "gitWorkflow": "${{ gitea.workflow }}",
              "gitRunNumber": "${{ gitea.run_number }}",
              "gitRunAttempt": "${{ gitea.run_attempt }}"
            }
          config-file: ".gitea/pr-commenter.yml"
      - name: Fail on error
        id: fail-on-error
        if: |
          steps.build_site.outcome != 'success'
          || (gittea.event_name == 'pull_request' && steps.deploy_site.outcome != 'success')
        run: exit 1