release.yml

name: Create Release

on:
  workflow_dispatch:

jobs:
  create-release:
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Extract Release Data
        id: extract
        run: |
          # Find the first version header (e.g. ## [1.0.0] - 2023-01-01)
          # We skip [Unreleased]
          VERSION_LINE=$(grep -n "^## \[[0-9]" CHANGELOG.md | head -n 1)

          if [ -z "$VERSION_LINE" ]; then
            echo "No version found in CHANGELOG.md"
            exit 1
          fi

          LINE_NUM=$(echo "$VERSION_LINE" | cut -d: -f1)
          VERSION=$(echo "$VERSION_LINE" | sed -E 's/.*## \[([^]]+)\].*/\1/')

          echo "Found version: $VERSION at line $LINE_NUM"

          # Find the next header (either [Unreleased], another version, or end of file) to determine end of current section
          # We start looking AFTER the found version line
          NEXT_HEADER_LINE=$(tail -n +$((LINE_NUM + 1)) CHANGELOG.md | grep -n "^## \[" | head -n 1 | cut -d: -f1)

          if [ -z "$NEXT_HEADER_LINE" ]; then
            # No next header, read until end
            BODY=$(tail -n +$((LINE_NUM + 1)) CHANGELOG.md)
          else
            # Calculate how many lines to read
            # NEXT_HEADER_LINE is relative to the tail output, so it's the number of lines to grab minus 1
            BODY=$(tail -n +$((LINE_NUM + 1)) CHANGELOG.md | head -n $((NEXT_HEADER_LINE - 1)))
          fi

          # Write body to file to avoid escaping issues
          echo "$BODY" > RELEASE_NOTES.md

          echo "version=$VERSION" >> $GITHUB_OUTPUT

      - name: Check if Tag Exists
        id: check_tag
        run: |
          if git rev-parse "v${{ steps.extract.outputs.version }}" >/dev/null 2>&1; then
            echo "Tag v${{ steps.extract.outputs.version }} already exists."
            echo "exists=true" >> $GITHUB_OUTPUT
          else
            echo "exists=false" >> $GITHUB_OUTPUT
          fi

      - name: Setup .NET
        if: steps.check_tag.outputs.exists == 'false'
        uses: actions/setup-dotnet@v5
        with:
          dotnet-version: 10.0.x

      - name: Install dotnet tools
        if: steps.check_tag.outputs.exists == 'false'
        run: dotnet tool restore

      - name: Restore dependencies
        if: steps.check_tag.outputs.exists == 'false'
        run: dotnet restore

      - name: Run Tests
        if: steps.check_tag.outputs.exists == 'false'
        run: dotnet test --configuration Release --no-restore

      - name: Build
        if: steps.check_tag.outputs.exists == 'false'
        run: dotnet build --configuration Release --no-restore

      - name: Pack
        if: steps.check_tag.outputs.exists == 'false'
        run: dotnet pack --configuration Release --no-build --output nupkgs

      - name: Publish to NuGet
        if: steps.check_tag.outputs.exists == 'false'
        run: dotnet nuget push "nupkgs/*.nupkg" --api-key ${{ secrets.NUGET_API_KEY }} --source https://api.nuget.org/v3/index.json --skip-duplicate

      - name: Create Release
        if: steps.check_tag.outputs.exists == 'false'
        uses: softprops/action-gh-release@v2
        with:
          tag_name: v${{ steps.extract.outputs.version }}
          name: v${{ steps.extract.outputs.version }}
          body_path: RELEASE_NOTES.md
          draft: false
          prerelease: false
          files: nupkgs/*.nupkg