actions/csharp-publish/action.yml

# yaml-language-server: $schema=https://json.schemastore.org/github-action.json
# permissions:
#   - packages: write  # Required for publishing to GitHub Packages
#   - contents: read   # Required for checking out repository
---
name: C# Publish
description: 'Publishes a C# project to GitHub Packages.'
author: 'Ismo Vuorinen'

branding:
  icon: package
  color: blue

inputs:
  dotnet-version:
    description: 'Version of .NET SDK to use.'
    required: false
  namespace:
    description: 'GitHub namespace for the package.'
    required: true
    default: 'ivuorinen'
  token:
    description: 'GitHub token with package write permissions'
    required: false

outputs:
  publish_status:
    description: 'Overall publish status (success/failure)'
    value: ${{ steps.set-status.outputs.status }}
  package_version:
    description: 'Version of the published package'
    value: ${{ steps.extract-version.outputs.version }}
  package_url:
    description: 'URL of the published package'
    value: ${{ steps.publish-package.outputs.package_url }}

runs:
  using: composite
  steps:
    - name: Mask Secrets
      shell: bash
      env:
        API_KEY: ${{ inputs.token || github.token }}
      run: |
        echo "::add-mask::$API_KEY"

    - name: Checkout Repository
      uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
      with:
        token: ${{ inputs.token || github.token }}

    - name: Validate Inputs
      id: validate
      uses: ivuorinen/actions/validate-inputs@0fa9a68f07a1260b321f814202658a6089a43d42
      with:
        action-type: 'csharp-publish'
        token: ${{ inputs.token }}
        namespace: ${{ inputs.namespace }}
        dotnet-version: ${{ inputs.dotnet-version }}

    - name: Detect .NET SDK Version
      id: detect-dotnet-version
      uses: ivuorinen/actions/dotnet-version-detect@0fa9a68f07a1260b321f814202658a6089a43d42
      with:
        default-version: '7.0'

    - name: Setup .NET SDK
      uses: actions/setup-dotnet@d4c94342e560b34958eacfc5d055d21461ed1c5d # v5.0.0
      with:
        dotnet-version: ${{ inputs.dotnet-version || steps.detect-dotnet-version.outputs.dotnet-version }}

    - name: Cache NuGet packages
      id: cache-nuget
      uses: ivuorinen/actions/common-cache@0fa9a68f07a1260b321f814202658a6089a43d42
      with:
        type: 'nuget'
        paths: '~/.nuget/packages'
        key-files: '**/*.csproj,**/*.props,**/*.targets'
        key-prefix: 'csharp-publish'

    - name: Restore Dependencies
      shell: bash
      env:
        CACHE_HIT: ${{ steps.cache-nuget.outputs.cache-hit }}
      run: |
        set -euo pipefail

        # Always run dotnet restore to ensure project.assets.json is present
        if [[ "$CACHE_HIT" == 'true' ]]; then
          echo "Cache hit - running fast dotnet restore"
        fi
        dotnet restore

    - name: Build Solution
      shell: bash
      run: |
        set -euo pipefail

        dotnet build --configuration Release --no-restore

    - name: Pack Solution
      shell: bash
      run: |
        set -euo pipefail

        dotnet pack --configuration Release --no-build --no-restore --output ./artifacts

    - name: Extract Package Version
      id: extract-version
      shell: bash
      run: |
        set -euo pipefail

        # Find the newest .nupkg file by modification time and extract version
        PACKAGE_FILE=$(find ./artifacts -name "*.nupkg" -type f -printf '%T@ %p\n' | sort -rn | head -n 1 | cut -d' ' -f2-)
        if [ -n "$PACKAGE_FILE" ]; then
          # Extract version from filename (assumes standard naming: PackageName.Version.nupkg)
          VERSION=$(basename "$PACKAGE_FILE" .nupkg | sed 's/.*\.\([0-9]\+\.[0-9]\+\.[0-9]\+.*\)$/\1/')
          printf '%s\n' "version=$VERSION" >> "$GITHUB_OUTPUT"
          printf '%s\n' "package_file=$PACKAGE_FILE" >> "$GITHUB_OUTPUT"
        else
          printf '%s\n' "version=unknown" >> "$GITHUB_OUTPUT"
          printf '%s\n' "package_file=" >> "$GITHUB_OUTPUT"
        fi

    - name: Publish Package
      id: publish-package
      shell: bash
      env:
        API_KEY: ${{ inputs.token || github.token }}
        NAMESPACE: ${{ inputs.namespace }}
      run: |
        set -euo pipefail

        PACKAGE_URL="https://github.com/$NAMESPACE/packages/nuget"
        printf '%s\n' "package_url=$PACKAGE_URL" >> "$GITHUB_OUTPUT"

        # First attempt
        if ! dotnet nuget push ./artifacts/*.nupkg \
          --api-key "$API_KEY" \
          --source "https://nuget.pkg.github.com/$NAMESPACE/index.json" \
          --skip-duplicate \
          --no-symbols; then

          echo "::warning::First publish attempt failed, retrying after 5 seconds..."
          sleep 5

          dotnet nuget push ./artifacts/*.nupkg \
            --api-key "$API_KEY" \
            --source "https://nuget.pkg.github.com/$NAMESPACE/index.json" \
            --skip-duplicate \
            --no-symbols
        fi

    - name: Set publish status output
      if: always()
      id: set-status
      shell: bash
      env:
        PUBLISH_STATUS: ${{ steps.publish-package.outcome == 'success' && 'success' || 'failure' }}
      run: |-
        printf '%s\n' "status=$PUBLISH_STATUS" >> "$GITHUB_OUTPUT"