Initial commit: LAAPC Print Service - Windows service with multi-tray printing, IPC queue management, PDF testing support, and self-installing CLI
This commit is contained in:
Jason
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using System.IO.Pipes;
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using System.Text;
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using System.Text.Json;
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namespace PrintServiceCLI;
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class Program
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{
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private const string PipeName = "PrintServicePipe";
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private const int TimeoutMs = 5000;
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static async Task<int> Main(string[] args)
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{
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try
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{
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// Handle special --install-service flag (called by elevated process)
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if (args.Contains("--install-service"))
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{
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return ServiceManager.EnsureServiceRunning(silent: false) ? 0 : 1;
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}
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// Check for skip-service-check flag
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bool skipServiceCheck = args.Contains("--skip-service-check");
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// Parse arguments
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var command = ParseArguments(args, out bool showHelp);
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if (showHelp || command == null)
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{
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ShowUsage();
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return command == null ? 1 : 0;
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}
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// Ensure service is running (unless testing)
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if (!skipServiceCheck)
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{
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if (!ServiceManager.EnsureServiceRunning())
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{
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Console.Error.WriteLine("ERROR: Service is not available. Cannot process print request.");
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return 1;
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}
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}
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var result = await SendCommandToService(command);
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if (result.Success)
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{
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Console.WriteLine($"SUCCESS: {result.Message}");
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return 0;
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}
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else
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{
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Console.Error.WriteLine($"ERROR: {result.Message}");
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return 1;
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}
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}
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catch (Exception ex)
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{
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Console.Error.WriteLine($"FATAL ERROR: {ex.Message}");
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return 1;
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}
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}
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/// <summary>
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/// Parse command line arguments
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/// </summary>
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static PrintCommand? ParseArguments(string[] args, out bool showHelp)
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{
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showHelp = false;
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string? filePath = null;
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string? documentType = null;
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string? orderNumber = null;
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for (int i = 0; i < args.Length; i++)
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{
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switch (args[i].ToLower())
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{
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case "-f":
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case "--file":
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if (i + 1 < args.Length)
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{
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filePath = args[++i];
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}
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break;
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case "-t":
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case "--type":
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if (i + 1 < args.Length)
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{
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documentType = args[++i];
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}
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break;
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case "-o":
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case "--order":
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if (i + 1 < args.Length)
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{
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orderNumber = args[++i];
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}
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break;
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case "-h":
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case "--help":
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case "?":
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showHelp = true;
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return null;
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case "--skip-service-check":
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case "--install-service":
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// These flags are handled in Main, skip here
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break;
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}
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}
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// Validate required arguments
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if (string.IsNullOrEmpty(filePath))
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{
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Console.Error.WriteLine("Error: File path is required (-f)");
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return null;
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}
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if (string.IsNullOrEmpty(documentType))
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{
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Console.Error.WriteLine("Error: Document type is required (-t)");
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return null;
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}
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if (!File.Exists(filePath))
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{
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Console.Error.WriteLine($"Error: File not found: {filePath}");
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return null;
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}
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return new PrintCommand
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{
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FilePath = Path.GetFullPath(filePath),
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DocumentType = documentType,
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OrderNumber = orderNumber
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};
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}
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/// <summary>
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/// Send command to service via named pipe
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/// </summary>
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static async Task<PrintResponse> SendCommandToService(PrintCommand command)
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{
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using var pipeClient = new NamedPipeClientStream(
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".",
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PipeName,
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PipeDirection.InOut,
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PipeOptions.Asynchronous);
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try
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{
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await pipeClient.ConnectAsync(TimeoutMs);
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}
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catch (TimeoutException)
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{
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return new PrintResponse
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{
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Success = false,
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Message = "Service not responding. Is the LAAPC Print Service running?"
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};
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}
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catch (IOException ex)
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{
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return new PrintResponse
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{
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Success = false,
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Message = $"Cannot connect to service: {ex.Message}"
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};
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}
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// Send command
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var json = JsonSerializer.Serialize(command);
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var bytes = Encoding.UTF8.GetBytes(json);
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await pipeClient.WriteAsync(bytes, 0, bytes.Length);
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await pipeClient.FlushAsync();
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// Read response
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var buffer = new byte[4096];
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var bytesRead = await pipeClient.ReadAsync(buffer, 0, buffer.Length);
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var responseJson = Encoding.UTF8.GetString(buffer, 0, bytesRead);
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var response = JsonSerializer.Deserialize<PrintResponse>(responseJson);
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return response ?? new PrintResponse { Success = false, Message = "Invalid response from service" };
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}
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/// <summary>
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/// Show usage information
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/// </summary>
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static void ShowUsage()
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{
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Console.WriteLine("LAAPC Print Service CLI");
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Console.WriteLine();
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Console.WriteLine("Usage: PrintServiceCLI -f <filepath> -t <doctype> [-o <ordernumber>]");
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Console.WriteLine();
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Console.WriteLine("Options:");
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Console.WriteLine(" -f, --file <path> Path to the capture file to print (required)");
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Console.WriteLine(" -t, --type <type> Document type (required)");
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Console.WriteLine(" Examples: invoice, order, delivery");
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Console.WriteLine(" -o, --order <number> Optional order number");
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Console.WriteLine(" -h, --help Show this help message");
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Console.WriteLine(" --skip-service-check Skip service availability check (for testing)");
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Console.WriteLine();
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Console.WriteLine("Examples:");
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Console.WriteLine(" PrintServiceCLI -f \"C:\\Captures\\file.txt\" -t invoice");
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Console.WriteLine(" PrintServiceCLI -f \"C:\\Captures\\file.txt\" -t order -o 12345");
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Console.WriteLine();
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Console.WriteLine("For Development/Testing:");
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Console.WriteLine(" PrintServiceCLI -f \"file.txt\" -t test --skip-service-check");
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}
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}
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/// <summary>
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/// Command to send to service
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/// </summary>
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class PrintCommand
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{
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public string FilePath { get; set; } = string.Empty;
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public string DocumentType { get; set; } = string.Empty;
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public string? OrderNumber { get; set; }
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}
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/// <summary>
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/// Response from service
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/// </summary>
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class PrintResponse
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{
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public bool Success { get; set; }
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public string Message { get; set; } = string.Empty;
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}
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