name: Docker - Server
on:
  release:
    types: [created]
  workflow_dispatch:
    inputs:
      tag:
        description: 'Tag to use (leave empty for latest)'
        required: false
        default: ''

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}-server

jobs:
  build:
    runs-on: ubuntu-22.04
    permissions:
      contents: read
      packages: write
    steps:
    - name: Checkout repository
      uses: actions/checkout@v3
      with:
        fetch-depth: 0
    - name: Grub Tag
      run: |
        if [[ "${{ github.event_name }}" == "release" ]]; then
          echo "Using release tag ${{ github.event.release.tag_name }}"
          echo "TAG=${{ github.event.release.tag_name }}" >> $GITHUB_ENV
        elif [[ -z "${{ github.event.inputs.tag }}" ]]; then
          LATEST_TAG=$(git describe --tags `git rev-list --tags --max-count=1`)
          echo "Using latest tag $LATEST_TAG"
          echo "TAG=$LATEST_TAG" >> $GITHUB_ENV
        else
          echo "Using manually specified tag ${{ github.event.inputs.tag }}"
          echo "TAG=${{ github.event.inputs.tag }}" >> $GITHUB_ENV
        fi
    - name: Log into registry ${{ env.REGISTRY }}
      if: github.event_name != 'pull_request'
      uses: docker/login-action@v2
      with:
        registry: ${{ env.REGISTRY }}
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}
    - name: Extract Docker metadata
      id: meta
      uses: docker/metadata-action@v4
      with:
        tags: type=raw,value=${{ env.TAG }}
        images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
    - name: Build and push Docker image
      uses: docker/build-push-action@v3
      with:
        platforms: linux/amd64
        context: .
        file: docker/Dockerfile
        push: true
        tags: ${{ steps.meta.outputs.tags }}
        labels: ${{ steps.meta.outputs.labels }}