# Forgejo Actions — Docker image publish for Dragon Fork.
#
# Triggers on semver tags (v*.*.*-dragonfork or v*.*.*). Builds a
# multi-arch image (linux/amd64 + linux/arm64) and pushes to the
# configured registry. The image name and registry are controlled by
# repository variables:
#
#   REGISTRY         — e.g. ghcr.io or registry.wilddragon.net
#   IMAGE_NAME       — e.g. zgaetano/dragonfork-core (defaults to repo name)
#
# The push credential must be stored as a repository secret:
#   REGISTRY_TOKEN   — password / token for the registry user
#   REGISTRY_USER    — registry username (defaults to repo owner)
#
# Quick-start after setting the variables/secrets:
#   git tag v0.2.0-dragonfork && git push origin v0.2.0-dragonfork

name: publish

on:
  push:
    tags:
      - 'v*.*.*'
      - 'v*.*.*-dragonfork'

jobs:
  build-and-push:
    name: Build and push multi-arch image
    runs-on: ubuntu-22.04
    permissions:
      contents: read
      packages: write

    steps:
      - uses: actions/checkout@v4

      - name: Set up QEMU (for arm64 cross-build)
        uses: docker/setup-qemu-action@v3

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

      - name: Derive image metadata
        id: meta
        run: |
          REGISTRY="${{ vars.REGISTRY || 'ghcr.io' }}"
          IMAGE="${{ vars.IMAGE_NAME || github.repository }}"
          TAG="${GITHUB_REF_NAME}"
          # Normalise: strip leading 'v' for the semver part, keep full tag too
          SEMVER="${TAG#v}"
          echo "image=${REGISTRY}/${IMAGE}" >> "$GITHUB_OUTPUT"
          echo "tag=${TAG}" >> "$GITHUB_OUTPUT"
          echo "semver=${SEMVER}" >> "$GITHUB_OUTPUT"

      - name: Login to registry
        uses: docker/login-action@v3
        with:
          registry: ${{ vars.REGISTRY || 'ghcr.io' }}
          username: ${{ vars.REGISTRY_USER || github.repository_owner }}
          password: ${{ secrets.REGISTRY_TOKEN }}

      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          context: .
          file: Dockerfile
          platforms: linux/amd64,linux/arm64
          push: true
          tags: |
            ${{ steps.meta.outputs.image }}:${{ steps.meta.outputs.tag }}
            ${{ steps.meta.outputs.image }}:latest
          labels: |
            org.opencontainers.image.title=Dragon Fork Core
            org.opencontainers.image.description=Datarhei Core with WebRTC egress
            org.opencontainers.image.version=${{ steps.meta.outputs.semver }}
            org.opencontainers.image.revision=${{ github.sha }}
            org.opencontainers.image.source=${{ github.server_url }}/${{ github.repository }}
          cache-from: type=gha
          cache-to: type=gha,mode=max