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
  max-retries:
    description: 'Maximum number of retry attempts for dependency restoration'
    required: false
    default: '3'

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: sh
      env:
        API_KEY: ${{ inputs.token || github.token }}
      run: |
        echo "::add-mask::$API_KEY"

    - name: Checkout Repository
      uses: actions/checkout@71cf2267d89c5cb81562390fa70a37fa40b1305e # v6-beta
      with:
        token: ${{ inputs.token || github.token }}

    - name: Validate Inputs
      id: validate
      uses: ivuorinen/actions/validate-inputs@5cc7373a22402ee8985376bc713f00e09b5b2edb
      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
      shell: sh
      env:
        DEFAULT_VERSION: '7.0'
      run: |
        set -eu

        # Function to validate version format
        validate_version() {
          version=$1
          case "$version" in
            [0-9]* | [0-9]*\.[0-9]* | [0-9]*\.[0-9]*\.[0-9]*)
              return 0
              ;;
            *)
              return 1
              ;;
          esac
        }

        # Function to clean version string
        clean_version() {
          printf '%s' "$1" | sed 's/^[vV]//' | tr -d ' \n\r'
        }

        detected_version=""

        # Parse .tool-versions file
        if [ -f .tool-versions ]; then
          echo "Checking .tool-versions for dotnet..." >&2
          version=$(awk '/^dotnet[[:space:]]/ {gsub(/#.*/, ""); print $2; exit}' .tool-versions 2>/dev/null || echo "")
          if [ -n "$version" ]; then
            version=$(clean_version "$version")
            if validate_version "$version"; then
              echo "Found .NET version in .tool-versions: $version" >&2
              detected_version="$version"
            fi
          fi
        fi

        # Parse Dockerfile
        if [ -z "$detected_version" ] && [ -f Dockerfile ]; then
          echo "Checking Dockerfile for dotnet..." >&2
          version=$(grep -iF "FROM" Dockerfile | grep -F "dotnet:" | head -1 | \
            sed -n -E "s/.*dotnet:([0-9]+(\.[0-9]+)*)(-[^:]*)?.*/\1/p" || echo "")
          if [ -n "$version" ]; then
            version=$(clean_version "$version")
            if validate_version "$version"; then
              echo "Found .NET version in Dockerfile: $version" >&2
              detected_version="$version"
            fi
          fi
        fi

        # Parse devcontainer.json
        if [ -z "$detected_version" ] && [ -f .devcontainer/devcontainer.json ]; then
          echo "Checking devcontainer.json for dotnet..." >&2
          if command -v jq >/dev/null 2>&1; then
            version=$(jq -r '.image // empty' .devcontainer/devcontainer.json 2>/dev/null | sed -n -E "s/.*dotnet:([0-9]+(\.[0-9]+)*)(-[^:]*)?.*/\1/p" || echo "")
            if [ -n "$version" ]; then
              version=$(clean_version "$version")
              if validate_version "$version"; then
                echo "Found .NET version in devcontainer: $version" >&2
                detected_version="$version"
              fi
            fi
          else
            echo "jq not found; skipping devcontainer.json parsing" >&2
          fi
        fi

        # Parse global.json
        if [ -z "$detected_version" ] && [ -f global.json ]; then
          echo "Checking global.json..." >&2
          if command -v jq >/dev/null 2>&1; then
            version=$(jq -r '.sdk.version // empty' global.json 2>/dev/null || echo "")
            if [ -n "$version" ]; then
              version=$(clean_version "$version")
              if validate_version "$version"; then
                echo "Found .NET version in global.json: $version" >&2
                detected_version="$version"
              fi
            fi
          else
            echo "jq not found; skipping global.json parsing" >&2
          fi
        fi

        # Use default version if nothing detected
        if [ -z "$detected_version" ]; then
          detected_version="$DEFAULT_VERSION"
          echo "Using default .NET version: $detected_version" >&2
        fi

        # Set output
        printf 'detected-version=%s\n' "$detected_version" >> "$GITHUB_OUTPUT"
        echo "Final detected .NET version: $detected_version" >&2

    - name: Setup .NET SDK
      uses: actions/setup-dotnet@c2fa09f4bde5ebb9d1777cf28262a3eb3db3ced7 # v5.2.0
      with:
        dotnet-version: ${{ inputs.dotnet-version || steps.detect-dotnet-version.outputs.detected-version }}
        cache: true
        cache-dependency-path: '**/packages.lock.json'

    - name: Restore Dependencies
      uses: nick-fields/retry@ad984534de44a9489a53aefd81eb77f87c70dc60 # v4.0.0
      with:
        timeout_minutes: 10
        max_attempts: ${{ inputs.max-retries }}
        command: |
          echo "Restoring .NET dependencies..."
          dotnet restore --verbosity normal

    - name: Build Solution
      shell: sh
      run: |
        set -eu

        dotnet build --configuration Release --no-restore

    - name: Pack Solution
      shell: sh
      run: |
        set -eu

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

    - name: Extract Package Version
      id: extract-version
      shell: sh
      run: |
        set -eu

        # 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: sh
      env:
        API_KEY: ${{ inputs.token || github.token }}
        NAMESPACE: ${{ inputs.namespace }}
      run: |
        set -eu

        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: sh
      env:
        PUBLISH_STATUS: ${{ steps.publish-package.outcome == 'success' && 'success' || 'failure' }}
      run: |-
        printf '%s\n' "status=$PUBLISH_STATUS" >> "$GITHUB_OUTPUT"