publish-github-release.yml

name: Publish GitHub Release

on:
  workflow_call:
    inputs:
      tag_name:
        required: true
        type: string
  workflow_dispatch:
    inputs:
      tag_name:
        description: 'Tag name for the release (e.g. v1.2.3)'
        required: true
        type: string

jobs:
  publish-release:
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - name: Checkout Repo
        uses: actions/checkout@v4

      # Get the date of the latest GitHub release
      - name: Get previous release tag
        id: previous_release
        run: |
          PREV_TAG=$(gh release list --limit 1 --json tagName --jq '.[0].tagName')
          if [ -z "$PREV_TAG" ]; then
            echo "No previous GitHub release found. Cannot generate release notes."
            exit 1
          fi
          echo "tag=$PREV_TAG" >> $GITHUB_OUTPUT
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.x'

      - name: Install github-activity
        run: pip install github-activity

      # Generate release notes since the last release
      - name: Generate release notes with github-activity
        env:
          GITHUB_ACCESS_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          github-activity "$GITHUB_REPOSITORY" --since "${{ steps.previous_release.outputs.tag }}" > release-notes.md
          # Remove the title from the release notes
          tail -n +2 release-notes.md > release-notes-temp.md && mv release-notes-temp.md release-notes.md

      # Create GitHub Release with gh
      - name: Create GitHub Release with gh
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          TAG="${{ github.event.inputs.tag_name || inputs.tag_name }}"
          
          # Check if the tag already exists
          if git ls-remote --tags origin "$TAG" | grep -q "$TAG"; then
            echo "Tag $TAG already exists, creating release for existing tag"
            gh release create "$TAG" --title "$TAG" --notes-file release-notes.md --verify-tag
          else
            echo "Error: Tag $TAG does not exist. Please create the tag first before running this workflow."
            exit 1
          fi