feat: 初始功能

Services/Abstractions/IAppLogger.cs

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+using CloudPrint.Client.Models;
+
+namespace CloudPrint.Client.Services.Abstractions;
+
+public interface IAppLogger
+{
+    string LogDirectory { get; }
+    void Write(AppLogEntry entry);
+}

Services/Abstractions/IFileService.cs

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+using CloudPrint.Client.Models;
+
+namespace CloudPrint.Client.Services.Abstractions;
+
+public interface IFileService
+{
+    long MaxFileSizeBytes { get; }
+    IReadOnlyCollection<string> SupportedExtensions { get; }
+
+    bool IsSupported(string path);
+    FileValidationResult ValidateFile(string path, long? maxFileSizeBytes = null);
+    CloudPrintDocument CreateLocalDocument(string path);
+    CloudPrintDocument CopyToLibrary(string sourcePath, string libraryRoot, string categoryName, int categoryId = 0);
+    string PrepareForPrint(PrintJob job);
+    Task<FilePreparationResult> PrepareForPrintAsync(PrintJob job, string cacheRoot, CancellationToken cancellationToken = default);
+}

Services/Abstractions/IPrintBackendClient.cs

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+using CloudPrint.Client.Models;
+
+namespace CloudPrint.Client.Services.Abstractions;
+
+public interface IPrintBackendClient : IAsyncDisposable
+{
+    event EventHandler<PrintJobReceivedEventArgs>? PrintJobReceived;
+    event EventHandler<AppLogEntry>? LogReceived;
+
+    bool IsConnected { get; }
+    int PrinterId { get; }
+    string Token { get; }
+    AdminSession AdminSession { get; }
+
+    Task ConnectAsync(string address, string apiKey, CancellationToken cancellationToken = default);
+    Task<AdminSession> LoginAdminAsync(string username, string password, CancellationToken cancellationToken = default);
+    void SetAdminToken(string username, string accessToken);
+    void LogoutAdmin();
+    Task RegisterPrinterAsync(PrinterInfo printer, string apiKey, CancellationToken cancellationToken = default);
+    Task SubscribePrintJobsAsync(PrinterInfo printer, CancellationToken cancellationToken = default);
+    Task<string> DownloadPrintFileAsync(PrintJob job, string cacheRoot, CancellationToken cancellationToken = default);
+    Task UploadLibraryDocumentAsync(CloudPrintDocument document, CancellationToken cancellationToken = default);
+    Task CancelPrintJobAsync(PrintJob job, CancellationToken cancellationToken = default);
+    Task SendStatusUpdateAsync(PrintJob job, CancellationToken cancellationToken = default);
+    Task SendHeartbeatAsync(PrinterInfo printer, CancellationToken cancellationToken = default);
+    void Disconnect();
+}

Services/Abstractions/IPrintService.cs

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+using CloudPrint.Client.Models;
+
+namespace CloudPrint.Client.Services.Abstractions;
+
+public interface IPrintService
+{
+    IReadOnlyList<PrinterInfo> GetPrinters();
+    PrinterStatus GetPrinterStatus(string printerName);
+    Task<string> SubmitPrintJobAsync(PrintJob job, IProgress<int>? progress = null, CancellationToken cancellationToken = default);
+    bool CancelPrintJob(string jobId);
+    bool CancelPrintJob(PrintJob job);
+    PrintJobStatus GetJobStatus(string jobId);
+}

Services/Abstractions/ISecretProtector.cs

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+namespace CloudPrint.Client.Services.Abstractions;
+
+public interface ISecretProtector
+{
+    string Protect(string plainText);
+    string Unprotect(string protectedText);
+}

Services/Abstractions/ISettingsService.cs

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+using CloudPrint.Client.Models;
+
+namespace CloudPrint.Client.Services.Abstractions;
+
+public interface ISettingsService
+{
+    ClientSettings Load();
+    void Save(ClientSettings settings);
+}

Services/Abstractions/IWebSocketService.cs

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+using CloudPrint.Client.Models;
+
+namespace CloudPrint.Client.Services.Abstractions;
+
+public interface IWebSocketService
+{
+    event EventHandler<AppLogEntry>? LogReceived;
+
+    bool IsConnected { get; }
+    Uri? Endpoint { get; }
+
+    Task ConnectAsync(Uri endpoint, CancellationToken cancellationToken = default);
+    Task DisconnectAsync(CancellationToken cancellationToken = default);
+}