feat: 实现媒体播放功能，支持本地文件和重定向，添加相关测试用例

backend/app/http/tenant_media/play.go

@@ -1,6 +1,7 @@
 package tenant_media
 
 import (
+	"quyun/v2/app/errorx"
 	"quyun/v2/app/services"
 	"quyun/v2/database/models"
 
@@ -30,9 +31,20 @@ func (*media) play(ctx fiber.Ctx, tenant *models.Tenant, token string) error {
 		"tenant_id": tenant.ID,
 	}).Info("tenant_media.play")
 
-	location, err := services.MediaDelivery.ResolvePlayRedirect(ctx.Context(), tenant.ID, token)
+	res, err := services.MediaDelivery.ResolvePlay(ctx.Context(), tenant.ID, token)
 	if err != nil {
 		return err
 	}
-	return ctx.Redirect().To(location)
+
+	switch res.Kind {
+	case services.MediaPlayResolutionKindLocalFile:
+		if res.ContentType != "" {
+			ctx.Set("Content-Type", res.ContentType)
+		}
+		return ctx.SendFile(res.LocalFilePath)
+	case services.MediaPlayResolutionKindRedirect:
+		return ctx.Redirect().To(res.RedirectURL)
+	default:
+		return errorx.ErrServiceUnavailable.WithMsg("unsupported play resolution")
+	}
 }