draft-release.yaml

name: draft-release

on:
  push:
    tags:
      - v*


jobs:

  prepare_release:
    runs-on: ubuntu-latest

    steps:

      - name: Checkout this repo sources
        uses: actions/checkout@v3
        with:
          ref: ${{ github.ref_name }}

      - name: Create repo archive
        # Make a static tarball with a checksum that does not change between downloads. This will ease packaging: see #143, #151.
        id: git_archive
        env:
          PROJ_NAME: ${{ github.event.repository.name }}
          REF_NAME: ${{ github.ref_name }}
          EXT: tar.gz
        run: |
          filename=${PROJ_NAME}-${REF_NAME}.${EXT}
          git archive -o "$filename" "$REF_NAME"
          echo "filename=$filename" >> $GITHUB_OUTPUT

      - name: Get annotated tag's message
        id: tag_msg
        env:
          REF_NAME: ${{ github.ref_name }}
        run: |
          #git cat-file -p "$REF_NAME" | tail -n +8
          {
            echo 'msg<<EOF'
            git tag -l "$REF_NAME" --format='%(contents:body)'
              # Returns an empty string for non-annotated (ligthweight) tags.
            echo EOF
          } >> "$GITHUB_OUTPUT"

      - name: Create new release draft
        id: create_release
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          REF_NAME: ${{ github.ref_name }}
          TAG_MSG: ${{ steps.tag_msg.outputs.msg }}
          GIT_ARCHIVE_FILE: ${{ steps.git_archive.outputs.filename }}
        run: |
          gh release create \
            --draft \
            --verify-tag \
            --notes "$TAG_MSG" \
            --title "$REF_NAME" \
            "$REF_NAME" \
            "$GIT_ARCHIVE_FILE"