name: Docker

on:
  push:
    # Publish `master` as Docker `latest` image.
    branches:
      - master

    # Publish `v1.2.3` tags as releases.
    tags:
      - v*

  # Run tests for any PRs.
  pull_request:

env:
  # TODO: Change variable to your image's name.
  IMAGE_NAME: terasology

jobs:
  # Run tests.
  # See also https://docs.docker.com/docker-hub/builds/automated-testing/
  #test:
  #  runs-on: ubuntu-latest

  #  steps:
  #    - uses: actions/checkout@v2

  #    - name: Run tests
  #      run: |
  #        if [ -f docker-compose.test.yml ]; then
  #          docker-compose --file docker-compose.test.yml build
  #          docker-compose --file docker-compose.test.yml run sut
  #        else
  #          docker build . --file Dockerfile
  #        fi

  # Push image to GitHub Packages.
  # See also https://docs.docker.com/docker-hub/builds/
  push:
    # Ensure test job passes before pushing image.
    # needs: test

    runs-on: ubuntu-latest
    if: github.event_name == 'push'

    steps:
      - uses: actions/checkout@v2

      - name: Build image
        run: docker build . --file Dockerfile --tag image

      - name: Log into registry
        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login docker.pkg.github.com -u ${{ github.actor }} --password-stdin

      - name: Push image
        run: |
          IMAGE_ID=docker.pkg.github.com/${{ github.repository }}/$IMAGE_NAME
          
          # Change all uppercase to lowercase
          IMAGE_ID=$(echo $IMAGE_ID | tr '[A-Z]' '[a-z]')

          # Strip git ref prefix from version
          VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')

          # Strip "v" prefix from tag name
          [[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION | sed -e 's/^v//')

          # Use Docker `latest` tag convention
          [ "$VERSION" == "master" ] && VERSION=latest

          echo IMAGE_ID=$IMAGE_ID
          echo VERSION=$VERSION
          
          rm versionInfo.properties* || true

          if [ " ${TERASOLOGY_PROPERTIES_URL}" == " " ]; then
              if [ " ${TERASOLOGY_BUILD}" == " " ]; then
                  source .env
                  TERASOLOGY_PROPERTIES_URL=http://jenkins.terasology.org/job/TerasologyStable/lastSuccessfulBuild/artifact/build/resources/main/org/terasology/version/versionInfo.properties                                                          
              else
                  if [ " ${TERASOLOGY_BUILD}" == " unstable" ]; then
                      TERASOLOGY_PROPERTIES_URL=http://jenkins.terasology.org/job/Terasology/lastSuccessfulBuild/artifact/build/resources/main/org/terasology/version/versionInfo.properties                                                            
                  fi
              fi
          fi
          wget ${TERASOLOGY_PROPERTIES_URL}
          source versionInfo.properties
          TAGNAME=$engineVersion-$displayVersion
          echo TAGNAME=$TAGNAME
          docker tag image $IMAGE_ID:$TAGNAME
          docker push $IMAGE_ID:$TAGNAME