publish.yml

name: Publish to NuGet

on:
  push:
    branches:
      - main

jobs:
  publish:
    name: publish release
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4
      with:
        fetch-depth: 0

    - name: 🔨 set up .net 7
      uses: actions/setup-dotnet@v4
      with:
        dotnet-version: 7.0.x

    - name: 👌 extract version
      shell: pwsh
      run: |
        $csprojPath = "src/LazyCart/LazyCart.csproj"
        $csproj = [xml](Get-Content -Path $csprojPath)
        $version = $csproj.Project.PropertyGroup.Version
        echo "Version: $version"
        echo "VERSION=$version" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append

    - name: 🧹 Trim VERSION variable
      run: echo "VERSION=$(echo "$VERSION" | xargs)" >> $GITHUB_ENV

    - name: 🔎 check if version changed
      run: |
        git fetch origin

        CS_PROJ_FILE="src/LazyCart/LazyCart.csproj"

        git show HEAD^:$CS_PROJ_FILE > old_csproj.xml

        cp $CS_PROJ_FILE new_csproj.xml

        OLD_VERSION=$(grep -oP '<Version>\K(.*?)(?=</Version>)' old_csproj.xml)
        NEW_VERSION=$(grep -oP '<Version>\K(.*?)(?=</Version>)' new_csproj.xml)

        VERSION_CHANGED=0

        if [ "$OLD_VERSION" = "$NEW_VERSION" ]; then
            echo "The <Version> tag has not changed."
        else
            echo "The <Version> tag has changed from $OLD_VERSION to $NEW_VERSION."
            VERSION_CHANGED=1
        fi

        echo "VERSION_CHANGED=$VERSION_CHANGED" >> $GITHUB_ENV        

    - name: ⚗ restore dependencies
      if: env.VERSION_CHANGED == '1'
      run: dotnet restore src

    - name: 🛠 build
      if: env.VERSION_CHANGED == '1'
      run: dotnet build src --configuration Release --no-restore
      
    - name: 🎁 pack nuget
      if: env.VERSION_CHANGED == '1'
      run: dotnet pack src/LazyCart/LazyCart.csproj --configuration Release --include-symbols /p:SymbolPackageFormat=snupkg /p:ContinuousIntegrationBuild=true /p:Version="${{ env.VERSION }}" --output .

    - name: 💌 publish nuget
      if: env.VERSION_CHANGED == '1'
      run: dotnet nuget push *.nupkg --source https://api.nuget.org/v3/index.json --api-key ${NUGET_KEY} --skip-duplicate
      env:
        NUGET_KEY: ${{ secrets.NUGET_API_KEY }}

    - name: 🔨 set up python
      if: env.VERSION_CHANGED == '1'
      uses: actions/setup-python@v5
      with:
        python-version: '3.x'

    - name: 📢 extract release notes
      if: env.VERSION_CHANGED == '1'
      run: |
        python scripts/extract_changelog.py CHANGELOG.md latest_release.md

    - name: 📑 create github release
      if: env.VERSION_CHANGED == '1'
      id: create_release
      uses: actions/create-release@v1
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      with:
        tag_name: v${{ env.VERSION }}
        release_name: Release v${{ env.VERSION }}
        draft: false
        prerelease: false
        body_path: latest_release.md