release.yml

name: release

on:
  push:
    tags:
      - 'v*'

permissions:
  contents: write

concurrency:
  group: release-${{ github.ref }}
  cancel-in-progress: false

jobs:
  release:
    runs-on: ubuntu-latest
    env:
      NOTES_PATH: ${{ github.workspace }}/release-notes.md
    defaults:
      run:
        shell: bash

    steps:
      - name: Validate release tag
        id: release_flags
        env:
          RELEASE_TAG: ${{ github.ref_name }}
        run: |
          set -euo pipefail

          if [[ ! "${RELEASE_TAG}" =~ ^v[0-9]+\.[0-9]+\.[0-9]+(-rc\.[0-9]+)?$ ]]; then
            echo "invalid release tag: ${RELEASE_TAG}" >&2
            exit 1
          fi

          if [[ "${RELEASE_TAG}" =~ -rc\.[0-9]+$ ]]; then
            echo "prerelease=true" >> "$GITHUB_OUTPUT"
            echo "make_latest=false" >> "$GITHUB_OUTPUT"
          else
            echo "prerelease=false" >> "$GITHUB_OUTPUT"
            echo "make_latest=true" >> "$GITHUB_OUTPUT"
          fi

      - name: Checkout repository
        uses: actions/checkout@v6
        with:
          ref: ${{ github.ref }}
          fetch-depth: 0
          fetch-tags: true

      - name: Install git-cliff
        uses: taiki-e/install-action@git-cliff

      - name: Generate release notes
        env:
          RELEASE_TAG: ${{ github.ref_name }}
        run: |
          set -euo pipefail

          ignore_rc_tags='^v[0-9]+\.[0-9]+\.[0-9]+-rc\.[0-9]+$'
          if [[ "${RELEASE_TAG}" =~ -rc\.[0-9]+$ ]]; then
            git-cliff --current --output "${NOTES_PATH}"
          else
            git-cliff --current --ignore-tags "${ignore_rc_tags}" --output "${NOTES_PATH}"
          fi

          cat "${NOTES_PATH}" >> "$GITHUB_STEP_SUMMARY"

      - name: Create draft GitHub Release
        uses: softprops/action-gh-release@v3
        with:
          tag_name: ${{ github.ref_name }}
          name: ${{ github.ref_name }}
          body_path: ${{ env.NOTES_PATH }}
          draft: true
          prerelease: ${{ steps.release_flags.outputs.prerelease }}
          make_latest: ${{ steps.release_flags.outputs.make_latest }}