name: release

on:
  push:
    tags: ['v*']

permissions:
  contents: write

jobs:
  release:
    runs-on: ubuntu-latest

    steps:
    - name: Checkout
      uses: actions/checkout@v3
      with:
        fetch-depth: 0

    - name: Setup Go
      uses: actions/setup-go@v4
      with:
        go-version: 1.23.x

    - name: Prepare release
      run: |
        set -eou pipefail
        make bin/extract-changelog

        # Extract target version number from the git tag and post it to
        # GITHUB_ENV to make it accessible via env.VERSION in other steps.
        VERSION=${{ github.ref }}
        VERSION="${VERSION#refs/tags/}"  # refs/tags/v1.2.3 => v1.2.3
        echo "VERSION=$VERSION" >> $GITHUB_ENV

        echo "Releasing $VERSION"

        # Place the release notes in changes.v1.2.3.txt to grab them in the
        # release step.
        echo "Release notes:"
        echo "----"
        bin/extract-changelog $VERSION | tee changes.$VERSION.txt
        echo "----"

    - name: Release
      uses: goreleaser/goreleaser-action@v6
      with:
        distribution: goreleaser
        version: latest
        args: release --clean --release-notes changes.${{ env.VERSION }}.txt
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        GORELEASER_CURRENT_TAG: ${{ env.VERSION }}