v1

OrpaonVision.ConfigApp/Annotation/Services/CvatAnnotationSyncAppService.cs

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+using OrpaonVision.ConfigApp.Annotation.Options;
+using OrpaonVision.Core.Annotation;
+using OrpaonVision.Core.Annotation.Contracts;
+using OrpaonVision.Core.Enums;
+using OrpaonVision.Core.Results;
+
+namespace OrpaonVision.ConfigApp.Annotation.Services;
+
+/// <summary>
+/// CVAT 标注同步应用服务（骨架实现）。
+/// 
+/// 说明：
+/// - 当前阶段先提供参数校验与返回契约，便于前后链路先跑通；
+/// - 实际 HTTP 调用、认证、重试策略将在后续迭代补齐。
+/// </summary>
+public sealed class CvatAnnotationSyncAppService : IAnnotationSyncAppService
+{
+    private readonly CvatOptions _options;
+
+    /// <summary>
+    /// 构造函数。
+    /// </summary>
+    /// <param name="options">CVAT 配置。</param>
+    public CvatAnnotationSyncAppService(CvatOptions options)
+    {
+        _options = options;
+    }
+
+    /// <inheritdoc />
+    public Task<Result> SyncProjectAsync(SyncAnnotationProjectCommand command, CancellationToken cancellationToken = default)
+    {
+        if (command.Platform != AnnotationPlatformEnum.Cvat)
+        {
+            return Task.FromResult(Result.Fail("ANNOTATION_PLATFORM_NOT_SUPPORTED", "当前版本仅支持 CVAT 平台同步。"));
+        }
+
+        if (command.ProjectId == Guid.Empty || command.AnnotationTaskId == Guid.Empty)
+        {
+            return Task.FromResult(Result.Fail("ANNOTATION_ARGUMENT_INVALID", "项目标识或标注任务标识无效。"));
+        }
+
+        if (string.IsNullOrWhiteSpace(command.CvatServerEndpoint))
+        {
+            return Task.FromResult(Result.Fail("ANNOTATION_ENDPOINT_REQUIRED", "CVAT 服务地址不能为空。"));
+        }
+
+        if (!Uri.TryCreate(command.CvatServerEndpoint, UriKind.Absolute, out _))
+        {
+            return Task.FromResult(Result.Fail("ANNOTATION_ENDPOINT_INVALID", "CVAT 服务地址格式不合法。"));
+        }
+
+        if (command.CvatTaskId <= 0 || command.CvatProjectId <= 0)
+        {
+            return Task.FromResult(Result.Fail("ANNOTATION_CVAT_ID_INVALID", "CVAT 项目 ID 或任务 ID 必须大于 0。"));
+        }
+
+        // 当前为骨架实现：预留后续与 CVAT API 的双向同步逻辑。
+        return Task.FromResult(Result.Success(message: "CVAT 同步请求已受理。"));
+    }
+
+    /// <inheritdoc />
+    public Task<Result<AnnotationSyncStatusDto>> GetSyncStatusAsync(Guid projectId, CancellationToken cancellationToken = default)
+    {
+        if (projectId == Guid.Empty)
+        {
+            return Task.FromResult(Result<AnnotationSyncStatusDto>.Fail("ANNOTATION_PROJECT_ID_INVALID", "项目标识不能为空。"));
+        }
+
+        var status = new AnnotationSyncStatusDto
+        {
+            ProjectId = projectId,
+            AnnotationTaskId = Guid.Empty,
+            Platform = AnnotationPlatformEnum.Cvat,
+            SyncStatus = AnnotationSyncStatusEnum.None,
+            ProgressPercent = 0,
+            LastSyncedAtUtc = null,
+            LastErrorMessage = null
+        };
+
+        return Task.FromResult(Result<AnnotationSyncStatusDto>.Success(status, message: $"CVAT 状态查询完成（{_options.ServerEndpoint}）。"));
+    }
+}