create_release_draft.yml

name: Form a Draft Release on Staging Merge

permissions:
  contents: write

on:
  push:
    branches:
      - master

jobs:
  create-release:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Extract changelog content
        id: changelog
        run: |
          # Extract the top version heading
          version=$(grep -m1 '^## ' CHANGELOG.md | sed 's/^## //')
          echo "Version found: $version"
          echo "version=$version" >> $GITHUB_OUTPUT

          # Extract lines under the top version block
          awk '
            /^## / {
              if (seen++) exit;
              next;
            }
            seen == 1 { print }
          ' CHANGELOG.md > body.txt

          # Remove trailing empty lines from the end of the file
          perl -0777 -pe 's/\n+\z//' body.txt > trimmed.txt && mv trimmed.txt body.txt

          echo "Extracted changelog body:"
          cat body.txt

      - name: Create draft release
        id: draft_release
        run: |
          version=${{ steps.changelog.outputs.version }}

          # Find all draft releases except the current version's draft
          old_drafts=$(gh release list --limit 100 --json tagName,isDraft | \
            jq -r --arg version "$version" '.[] | select(.isDraft and (.tagName != $version)) | .tagName')

          # Delete old draft releases (ignore errors if none)
          for tag in $old_drafts; do
            echo "Deleting old draft release with tag: $tag"
            gh release delete "$tag" --yes || true
          done

          release_tag=$(gh release list --limit 100 --json isDraft,tagName | \
            jq -r --arg version "$version" '.[] | select(.isDraft and (.tagName == $version)) | .tagName' | head -n1)

          if [ -z "$release_tag" ]; then
            echo "No draft release found, creating new one..."
            gh release create "${version}" --target staging --draft --title "$version" --notes-file body.txt
          else
            echo "Updating existing draft release $release_tag..."
            gh release edit "${version}" --target staging --title "$version" --notes-file body.txt
          fi
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}