name: Create docker images

on:
  push:
    tags:
      - 'v*.*.*'
  workflow_dispatch:
    inputs:
      version:
        description: 'Optional image version (e.g. 3.0.0, v3.0.0, or 3.0.0-beta.1)'
        required: false
        default: ''

jobs:
  build:
    name: Build, push, and deploy
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      id-token: write

    steps:
      - uses: actions/checkout@v5

      - name: Install cosign
        uses: sigstore/cosign-installer@v3

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

      - name: Log into GHCR
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Log into Docker Hub
        if: github.repository == 'umami-software/umami'
        uses: docker/login-action@v3
        with:
          registry: docker.io
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      # Compute tags for the image
      - name: Compute version tags
        id: compute
        run: |
          INPUT="${{ github.event.inputs.version }}"
          TAGS=""

          if [[ -n "$INPUT" ]]; then
            VERSION="${INPUT#v}"  # strip leading v
            MAJOR=$(echo "$VERSION" | cut -d. -f1)
            MINOR=$(echo "$VERSION" | cut -d. -f2)

            # prereleases (e.g., 3.0.0-beta) do NOT get 'latest'
            if [[ "$VERSION" == *-* ]]; then
              TAGS="${VERSION}"
            else
              TAGS="${VERSION},${MAJOR}.${MINOR},${MAJOR},latest"
            fi
          fi

          echo "tags=$TAGS" >> $GITHUB_OUTPUT
          echo "Computed tags: $TAGS"

      - name: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: |
            umamisoftware/umami,enable=${{ github.repository == 'umami-software/umami' }}
            ghcr.io/${{ github.repository }}
          tags: |
            type=semver,pattern={{version}},enable=${{ github.ref_type == 'tag' }}
            type=semver,pattern={{major}}.{{minor}},enable=${{ github.ref_type == 'tag' }}
            type=semver,pattern={{major}},enable=${{ github.ref_type == 'tag' }}
            type=raw,value=${{ steps.compute.outputs.tags }},enable=${{ steps.compute.outputs.tags != '' }}
            type=ref,event=branch
            type=sha

      # Build and push images
      - name: Build and push Docker image
        id: build-and-push
        uses: docker/build-push-action@v6
        with:
          context: .
          push: true
          platforms: linux/amd64,linux/arm64
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max
          provenance: false  # disable automatic registry attestations

      # Generate a local provenance attestation (not uploaded)
      - name: Generate local provenance attestation
        run: |
          cosign attest --yes \
            --predicate <(echo '{"build":"github-actions","repo":"${{ github.repository }}","run_id":"${{ github.run_id }}"}') \
            --type slsaprovenance \
            ${{ steps.meta.outputs.tags }}