name: Build and publish Docker image

on:
  release:
    types: [released]
  schedule:
    - cron: '0 0 * * *'
  workflow_dispatch:

env:
  GHCR_REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build-and-push-image:
    runs-on: ubuntu-latest

    # Avoid running nightly build if dockerhub credentials are absent
    # This should prevent triggering nightly builds on forks
    if: |
      github.event_name != 'schedule' ||
      vars.DOCKERHUB_ORGNAME != ''
    permissions:
      contents: read
      packages: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Log in to the ghcr container registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.GHCR_REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Log in to the dockerhub container registry
        uses: docker/login-action@v3
        with:
          username: ${{ vars.DOCKERHUB_ORGNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Extract metadata for Docker build
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: |
            name=${{ env.GHCR_REGISTRY }}/${{ env.IMAGE_NAME }}
            name=${{ env.IMAGE_NAME }}
          flavor: latest=true
          tags: |
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}
            type=semver,pattern={{major}}.{{minor}}
            type=schedule,prefix=nightly-,pattern={{date 'YYYYMMDD'}}
            type=raw,enable=${{ github.event_name == 'workflow_dispatch' }},value=workflow_dispatch-{{branch}}-{{sha}}
            type=raw,enable=${{ github.event_name == 'release' }},value=stable

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3
        with:
          platforms: arm64

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Build and push Docker image
        uses: docker/build-push-action@v6
        with:
          context: .
          build-args: |
            DEPENDENCIES=bcrypt,argon2,ldap
            VERSION=${{ github.event.release.tag_name || github.ref_name }}
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          platforms: linux/amd64,linux/arm64
