preview-release.yml

name: preview-release

on:
  workflow_dispatch:
    inputs:
      release_kind:
        description: "Release line to preview."
        required: true
        default: stable
        type: choice
        options:
          - stable
          - rc

permissions:
  contents: read

jobs:
  preview:
    runs-on: ubuntu-latest
    env:
      RELEASE_KIND: ${{ inputs.release_kind }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@v6
        with:
          ref: ${{ github.event.repository.default_branch }}
          fetch-depth: 100
          fetch-tags: true

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

      - name: Compute release tag
        id: compute_release_version
        shell: bash
        run: |
          set -euo pipefail

          next_tag="$(python3 .github/scripts/compute_release_version.py --release-kind "${RELEASE_KIND}")"
          echo "next_tag=${next_tag}" >> "$GITHUB_OUTPUT"

      - name: Generate release preview
        shell: bash
        env:
          NEXT_TAG: ${{ steps.compute_release_version.outputs.next_tag }}
        run: |
          set -euo pipefail

          ignore_rc_tags='^v[0-9]+\.[0-9]+\.[0-9]+-rc\.[0-9]+$'
          notes_path="${RUNNER_TEMP}/release-notes.md"
          if [[ "${RELEASE_KIND}" == "stable" ]]; then
            git-cliff --ignore-tags "${ignore_rc_tags}" --unreleased --bump --tag "${NEXT_TAG}" --output "${notes_path}"
          else
            git-cliff --unreleased --bump --tag "${NEXT_TAG}" --output "${notes_path}"
          fi

          cat >> "$GITHUB_STEP_SUMMARY" <<EOF
          # Release Preview

          - Release kind: \`${RELEASE_KIND}\`
          - Next tag: \`${NEXT_TAG}\`

          EOF

          cat "$notes_path" >> "$GITHUB_STEP_SUMMARY"