name: Release new version

on:
  push:
    tags:
      - "*" # triggers only if push new tag version, like `v0.8.4`

# Restrict jobs in this workflow to have no permissions by default; permissions
# should be granted per job as needed using a dedicated `permissions` block
permissions: {}

jobs:
  goreleaser:
    outputs:
      hashes: ${{ steps.hash.outputs.hashes }}
    permissions:
      contents: write # for goreleaser/goreleaser-action to create a GitHub release
      packages: write # for goreleaser/goreleaser-action to publish docker images
    runs-on: ubuntu-latest
    env:
      # Required for buildx on docker 19.x
      DOCKER_CLI_EXPERIMENTAL: "enabled"
    steps:
      - name: Checkout
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          fetch-depth: 0
          persist-credentials: false
      - name: Set up Go
        uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6.4.0
        with:
          go-version-file: "go.mod"
          check-latest: true
          cache: false
      - uses: docker/setup-qemu-action@ce360397dd3f832beb865e1373c09c0e9f86d70a # v4.0.0
      - uses: docker/setup-buildx-action@4d04d5d9486b7bd6fa91e7baf45bbb4f8b9deedd # v4.0.0
      - name: ghcr-login
        uses: docker/login-action@4907a6ddec9925e35a0a9e82d7399ccc52663121 # v4.1.0
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Detect stable tag
        id: detect_stable
        # Extracts tag name from git ref and check tag is stable
        # semantic version pattern (vMAJOR.MINOR.PATCH, e.g., v1.2.3)
        run: |
          TAG="${GITHUB_REF_NAME}"
          if [[ "$TAG" =~ ^v[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
            echo "STABLE=true" >> $GITHUB_ENV
          else
            echo "STABLE=false" >> $GITHUB_ENV
          fi
      - name: Run GoReleaser
        id: run-goreleaser
        uses: goreleaser/goreleaser-action@e24998b8b67b290c2fa8b7c14fcfa7de2c5c9b8c # v7.1.0
        with:
          distribution: goreleaser
          version: "~> v2"
          args: release --clean
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          STABLE: ${{ env.STABLE }}
      - name: Generate subject
        id: hash
        env:
          ARTIFACTS: "${{ steps.run-goreleaser.outputs.artifacts }}"
        run: |
          set -euo pipefail
          checksum_file=$(echo "$ARTIFACTS" | jq -r '.[] | select (.type=="Checksum") | .path')
          echo "hashes=$(cat $checksum_file | base64 -w0)" >> "$GITHUB_OUTPUT"
  provenance:
    needs: [goreleaser]
    permissions:
      actions: read # To read the workflow path.
      id-token: write # To sign the provenance.
      contents: write # To add assets to a release.
    # This must be a tag, not a hash: https://github.com/slsa-framework/slsa-github-generator/blob/main/README.md#referencing-slsa-builders-and-generators
    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v2.1.0
    with:
      base64-subjects: "${{ needs.goreleaser.outputs.hashes }}"
      upload-assets: true # upload to a new release
      draft-release: true # upload to a new draft release