♻️ refactor(vod): 优化上传状态管理

- 将上传状态字符串字面量重构为UploadStatus枚举，提高代码可维护性
- 统一替换所有状态字符串为枚举值，增强类型安全性
- 优化renderStatusTag函数参数类型，明确依赖枚举类型
- 在UI条件渲染中使用枚举值替代字符串比较，减少潜在错误

src/client/admin/components/vod/VodUpload.tsx

@@ -7,10 +7,18 @@ import { Card, CardContent, CardHeader, CardTitle } from "@/client/components/ui
 import { Progress } from "@/client/components/ui/progress";
 import { Badge } from "@/client/components/ui/badge";
 
+enum UploadStatus {
+  PENDING = "pending",
+  UPLOADING = "uploading", 
+  SUCCESS = "success",
+  ERROR = "error",
+  CANCELED = "canceled"
+}
+
 interface UploadTask {
   file: File;
   progress: number;
-  status: "pending" | "uploading" | "success" | "error" | "canceled";
+  status: UploadStatus;
   fileId?: string;
   videoUrl?: string;
   coverUrl?: string;
@@ -76,7 +84,7 @@ export const VodUpload: React.FC<VodUploadProps> = ({
     const newTask: UploadTask = {
       file: selectedVideo,
       progress: 0,
-      status: "pending",
+      status: UploadStatus.PENDING,
     };
 
     setUploadTasks((prev) => [...prev, newTask]);
@@ -89,13 +97,13 @@ export const VodUpload: React.FC<VodUploadProps> = ({
 
       const updatedTask: UploadTask = {
         ...newTask,
-        status: "uploading",
+        status: UploadStatus.UPLOADING,
         cancel: () => {
           uploader.cancel();
           setUploadTasks((prev) =>
             prev.map((task) =>
               task.file === newTask.file
-                ? { ...task, status: "canceled" }
+                ? { ...task, status: UploadStatus.CANCELED }
                 : task
             )
           );
@@ -121,7 +129,7 @@ export const VodUpload: React.FC<VodUploadProps> = ({
       uploader.on("media_upload", (info) => {
         setUploadTasks((prev) =>
           prev.map((task) =>
-            task.file === newTask.file ? { ...task, status: "success" } : task
+            task.file === newTask.file ? { ...task, status: UploadStatus.SUCCESS } : task
           )
         );
       });
@@ -134,7 +142,7 @@ export const VodUpload: React.FC<VodUploadProps> = ({
         fileId: result.fileId,
         videoUrl: result.video.url,
         coverUrl: result.cover?.url,
-        status: "success",
+        status: UploadStatus.SUCCESS,
       };
 
       setUploadTasks((prev) =>
@@ -156,7 +164,7 @@ export const VodUpload: React.FC<VodUploadProps> = ({
     } catch (error) {
       setUploadTasks((prev) =>
         prev.map((task) =>
-          task.file === newTask.file ? { ...task, status: "error" } : task
+          task.file === newTask.file ? { ...task, status: UploadStatus.ERROR } : task
         )
       );
       toast.error("视频上传失败");
@@ -174,17 +182,17 @@ export const VodUpload: React.FC<VodUploadProps> = ({
   };
 
   // 渲染上传状态标签
-  const renderStatusTag = (status: UploadTask["status"]) => {
+  const renderStatusTag = (status: UploadStatus) => {
     switch (status) {
-      case "pending":
+      case UploadStatus.PENDING:
         return <Badge variant="outline">等待上传</Badge>;
-      case "uploading":
+      case UploadStatus.UPLOADING:
         return <Badge variant="secondary">上传中</Badge>;
-      case "success":
+      case UploadStatus.SUCCESS:
         return <Badge variant="default">上传成功</Badge>;
-      case "error":
+      case UploadStatus.ERROR:
         return <Badge variant="destructive">上传失败</Badge>;
-      case "canceled":
+      case UploadStatus.CANCELED:
         return <Badge variant="outline">已取消</Badge>;
       default:
         return <Badge variant="outline">未知状态</Badge>;
@@ -244,7 +252,7 @@ export const VodUpload: React.FC<VodUploadProps> = ({
               <div className="flex items-center gap-2 mb-3">
                 <span className="font-medium">{task.file.name}</span>
                 {renderStatusTag(task.status)}
-                {task.status === "uploading" && task.cancel && (
+                {task.status === UploadStatus.UPLOADING && task.cancel && (
                   <Button
                     variant="ghost"
                     size="sm"
@@ -255,7 +263,7 @@ export const VodUpload: React.FC<VodUploadProps> = ({
                   </Button>
                 )}
               </div>
-              {task.status === "uploading" && (
+              {task.status === UploadStatus.UPLOADING && (
                 <Progress value={task.progress} className="w-full" />
               )}
               {task.fileId && (