具备界面基础功能

SHH.CameraSdk/Controllers/CamerasController.cs

@@ -326,6 +326,64 @@ public class CamerasController : ControllerBase
         });
     }
 
+    [HttpGet("{id}/subscriptions")]
+    public IActionResult GetSubscriptions(long id)
+    {
+        // 1. 检查设备是否存在
+        var camera = _manager.GetDevice(id);
+        if (camera == null)
+        {
+            return NotFound(new { error = $"Camera {id} not found." });
+        }
+
+        // 2. 从设备的 FrameController 获取当前活跃的订阅
+        // 注意：FrameController.GetCurrentRequirements() 返回的是 List<FrameRequirement>
+        // 它可以直接被序列化为 JSON
+        var subs = camera.Controller.GetCurrentRequirements();
+
+        return Ok(subs);
+    }
+
+    // =============================================================
+    // 6. 新增：彻底删除/注销订阅 (RESTful DELETE)
+    // URL: DELETE /api/cameras/{id}/subscriptions/{appId}
+    // =============================================================
+    [HttpDelete("{id}/subscriptions/{appId}")]
+    public IActionResult RemoveSubscription(long id, string appId)
+    {
+        // 1. 检查设备是否存在
+        var device = _manager.GetDevice(id);
+        if (device == null)
+        {
+            return NotFound(new { error = $"Camera {id} not found." });
+        }
+
+        // 2. 获取流控控制器
+        var controller = device.Controller;
+        if (controller == null)
+        {
+            // 如果设备本身没有控制器（比如离线或不支持），也算删除成功
+            return Ok(new { success = true, message = "Device has no controller, nothing to remove." });
+        }
+
+        // 3. 执行注销逻辑 (核心)
+        // 从 FrameController 的分发列表中移除
+        controller.Unregister(appId);
+
+        // 4. 清理显示资源 (重要！)
+        // 参考您 UpdateSubscription 中的逻辑，必须同时停止 DisplayManager，否则窗口关不掉
+        _displayManager.StopDisplay(appId);
+
+        // 5. 记录审计日志
+        device.AddAuditLog($"用户指令：彻底注销订阅 [{appId}]");
+
+        return Ok(new
+        {
+            success = true,
+            message = $"Subscription {appId} has been removed and display stopped."
+        });
+    }
+
     // 1. 获取单个设备详情（用于编辑回填）
     [HttpGet("{id}")]
     public IActionResult GetDevice(int id)