Add C# console application for programmatic WinGet configuration management

.gitignore

@@ -3,4 +3,23 @@ node_modules/
 
 # Ignore package.json and package-lock.json
 package.json
-package-lock.json
+package-lock.json
+
+# .NET build artifacts
+bin/
+obj/
+*.user
+*.suo
+*.cache
+*.dll
+*.exe
+*.pdb
+*.vspscc
+*.vssscc
+.vs/
+.vscode/
+*.log
+
+# Generated WinGet configuration files
+WinGetConfigApplier/generated-*.yaml
+WinGetConfigApplier/*-output.yaml

IMPLEMENTATION_SUMMARY.md

@@ -0,0 +1,196 @@
+# WinGet Configuration Applier - Implementation Summary
+
+## Overview
+Successfully implemented a C# console application that parses JSON configuration files and programmatically applies WinGet configurations for unattended software installations.
+
+## Implementation Details
+
+### Project Structure
+```
+WinGetConfigApplier/
+├── Models/
+│   └── AppConfiguration.cs       # Data models for JSON configuration
+├── Services/
+│   ├── ConfigurationValidator.cs # Configuration validation logic
+│   ├── Logger.cs                  # Console logging implementation
+│   ├── WinGetConfigurationBuilder.cs # YAML generation from JSON
+│   └── WinGetInstaller.cs        # WinGet command execution
+├── Program.cs                     # Main application entry point
+├── apps-config.json              # Sample configuration file
+├── README.md                      # Detailed documentation
+└── WinGetConfigApplier.csproj    # .NET project file
+```
+
+### Key Features Implemented
+
+#### 1. JSON Configuration Parser
+- **Models**: Created strongly-typed C# classes for configuration
+  - `AppConfiguration`: Root configuration object
+  - `Application`: Individual application definition
+  - `InstallOptions`: Installation preferences
+  - `ConfigurationSettings`: Global settings
+
+#### 2. Configuration Validation
+- Validates required fields (id, name, source)
+- Checks for empty application lists
+- Validates configuration settings
+- Provides detailed error messages with field-level feedback
+
+#### 3. Logging System
+- Color-coded console output:
+  - White: Information
+  - Yellow: Warnings
+  - Red: Errors
+  - Gray: Debug
+- Configurable log levels: Debug, Information, Warning, Error
+- Timestamped log entries
+- Clean, professional output format
+
+#### 4. WinGet Configuration Builder
+- Generates valid WinGet DSC YAML from JSON
+- Supports OS version assertions
+- Developer Mode enablement option
+- Proper YAML formatting with schema reference
+- Sanitizes IDs for YAML compatibility
+
+#### 5. WinGet Integration
+- Programmatic execution of WinGet commands
+- Asynchronous process handling
+- Real-time output streaming
+- Error capture and reporting
+- Exit code handling
+- WinGet availability checking
+
+#### 6. Error Handling
+- Comprehensive try-catch blocks
+- JSON parsing error handling
+- File I/O error handling
+- Process execution error handling
+- User-friendly error messages
+- Non-zero exit codes for failures
+
+### Sample JSON Configuration
+```json
+{
+  "applications": [
+    {
+      "id": "Microsoft.VisualStudioCode",
+      "name": "Visual Studio Code",
+      "source": "winget",
+      "installOptions": {
+        "silent": true,
+        "acceptPackageAgreements": true
+      },
+      "description": "Install Visual Studio Code"
+    }
+  ],
+  "configuration": {
+    "minOsVersion": "10.0.22631",
+    "enableDeveloperMode": true,
+    "logLevel": "Information"
+  }
+}
+```
+
+### Generated WinGet YAML
+The application generates standard WinGet DSC YAML files compatible with:
+- WinGet DSC schema 0.2
+- Microsoft.Windows.Developer resources
+- Microsoft.WinGet.DSC resources
+
+## Testing Results
+
+### Validation Testing
+✅ Successfully detects missing required fields
+✅ Properly validates empty application lists
+✅ Correctly identifies configuration errors
+✅ Provides clear error messages
+
+### YAML Generation Testing
+✅ Generates valid WinGet DSC YAML
+✅ Includes all required sections (assertions, resources)
+✅ Properly formats package entries
+✅ Adds schema references
+
+### Application Flow Testing
+✅ Help command works correctly
+✅ Configuration file loading successful
+✅ JSON parsing works properly
+✅ Graceful handling when WinGet unavailable
+✅ Proper exit codes (0 for success, 1 for errors)
+
+## Security Scan Results
+- **CodeQL Analysis**: ✅ No vulnerabilities detected
+- **Code Review**: ✅ No issues found
+
+## Documentation
+- Comprehensive README in WinGetConfigApplier directory
+- Updated main repository README
+- Inline code comments for complex logic
+- XML documentation comments on public APIs
+- Usage examples and command-line help
+
+## Command-Line Interface
+```bash
+# Display help
+dotnet run -- --help
+
+# Use default configuration
+dotnet run
+
+# Use custom configuration and output files
+dotnet run -- myconfig.json output.yaml
+```
+
+## Technical Specifications
+- **Framework**: .NET 9.0
+- **Language**: C# 12
+- **Target OS**: Windows 10/11 (10.0.22631+)
+- **Build**: Both Debug and Release configurations
+- **Output**: Console application (cross-platform capable)
+
+## Build Commands
+```bash
+# Debug build
+dotnet build
+
+# Release build
+dotnet build -c Release
+
+# Publish standalone executable
+dotnet publish -c Release -r win-x64 --self-contained
+```
+
+## Future Enhancement Opportunities
+While the current implementation meets all requirements, potential enhancements could include:
+- Unit tests for services and validation
+- Support for multiple configuration sources
+- Configuration file templates
+- Dry-run mode
+- Progress reporting during installation
+- Configuration file merging
+- Application dependency resolution
+
+## Compliance
+✅ Meets all problem statement requirements:
+- ✅ C# console application
+- ✅ Parses JSON file with application identifiers
+- ✅ Supports installation options
+- ✅ Programmatically applies WinGet configuration
+- ✅ Unattended (silent) installations
+- ✅ Basic validation
+- ✅ Logging
+- ✅ Failure handling
+
+## Files Modified/Created
+1. **Created**: WinGetConfigApplier/Program.cs
+2. **Created**: WinGetConfigApplier/Models/AppConfiguration.cs
+3. **Created**: WinGetConfigApplier/Services/ConfigurationValidator.cs
+4. **Created**: WinGetConfigApplier/Services/Logger.cs
+5. **Created**: WinGetConfigApplier/Services/WinGetConfigurationBuilder.cs
+6. **Created**: WinGetConfigApplier/Services/WinGetInstaller.cs
+7. **Created**: WinGetConfigApplier/WinGetConfigApplier.csproj
+8. **Created**: WinGetConfigApplier/apps-config.json
+9. **Created**: WinGetConfigApplier/README.md
+10. **Modified**: README.md (added section about C# app)
+11. **Modified**: .gitignore (added C# build artifacts)

README.md

@@ -12,6 +12,7 @@ If you find this project helpful, please give it a star 🌟
 ## Table of Contents
 
 - [Installation](#installation)
+- [WinGet Configuration Applier (C# Console App)](#winget-configuration-applier-c-console-app)
 - [What's Included](#whats-included)
 - [Documentation](#documentation)
 
@@ -26,6 +27,47 @@ winget configure -f winget-config.yaml
 if (Test-Path 'post-install.ps1') { Remove-Item -Path 'post-install.ps1' -Force }; Invoke-WebRequest -Uri 'https://raw.githubusercontent.com/devexlead/onboarding-winget/refs/heads/main/post-install.ps1' -OutFile 'post-install.ps1' -Headers @{"Cache-Control"="no-cache"}; .\post-install.ps1
 ```
 
+## WinGet Configuration Applier (C# Console App)
+
+A C# console application that parses a JSON file containing application identifiers and installation options, then programmatically applies a WinGet configuration to perform unattended (silent) software installations.
+
+### Features
+
+- ✅ **JSON Configuration**: Define applications to install in a simple JSON format
+- ✅ **Validation**: Built-in configuration validation with detailed error messages
+- ✅ **Logging**: Comprehensive logging with configurable log levels
+- ✅ **Error Handling**: Robust error handling and failure reporting
+- ✅ **WinGet Integration**: Generates WinGet DSC YAML configuration and applies it programmatically
+- ✅ **Silent Installation**: Supports unattended installations
+
+### Quick Start
+
+1. Navigate to the `WinGetConfigApplier` directory
+2. Customize `apps-config.json` with your desired applications
+3. Run the application:
+
+```bash
+dotnet run
+```
+
+For detailed documentation, see [WinGetConfigApplier/README.md](WinGetConfigApplier/README.md)
+
+### Building
+
+```bash
+cd WinGetConfigApplier
+dotnet build -c Release
+```
+
+### Publishing a Standalone Executable
+
+```bash
+cd WinGetConfigApplier
+dotnet publish -c Release -r win-x64 --self-contained
+```
+
+The executable will be in `bin/Release/net9.0/win-x64/publish/`
+
 ## What's Included
 
 Here’s the list of applications that will be installed (based on the `winget-config.yaml`):

WinGetConfigApplier/Models/AppConfiguration.cs

@@ -0,0 +1,41 @@
+namespace WinGetConfigApplier.Models;
+
+/// <summary>
+/// Represents the root configuration object
+/// </summary>
+public class AppConfiguration
+{
+    public List<Application> Applications { get; set; } = new();
+    public ConfigurationSettings Configuration { get; set; } = new();
+}
+
+/// <summary>
+/// Represents an application to be installed
+/// </summary>
+public class Application
+{
+    public string Id { get; set; } = string.Empty;
+    public string Name { get; set; } = string.Empty;
+    public string Source { get; set; } = "winget";
+    public InstallOptions InstallOptions { get; set; } = new();
+    public string Description { get; set; } = string.Empty;
+}
+
+/// <summary>
+/// Represents installation options for an application
+/// </summary>
+public class InstallOptions
+{
+    public bool Silent { get; set; } = true;
+    public bool AcceptPackageAgreements { get; set; } = true;
+}
+
+/// <summary>
+/// Represents global configuration settings
+/// </summary>
+public class ConfigurationSettings
+{
+    public string MinOsVersion { get; set; } = "10.0.22631";
+    public bool EnableDeveloperMode { get; set; } = false;
+    public string LogLevel { get; set; } = "Information";
+}