fix veo3 (#2140)

controller/video_proxy.go

@@ -92,8 +92,30 @@ func VideoProxy(c *gin.Context) {
 	}
 
 	if channel.Type == constant.ChannelTypeGemini {
-		videoURL = fmt.Sprintf("%s&key=%s", c.Query("url"), channel.Key)
-		req.Header.Set("x-goog-api-key", channel.Key)
+		apiKey := task.PrivateData.Key
+		if apiKey == "" {
+			logger.LogError(c.Request.Context(), fmt.Sprintf("Missing stored API key for Gemini task %s", taskID))
+			c.JSON(http.StatusInternalServerError, gin.H{
+				"error": gin.H{
+					"message": "API key not stored for task",
+					"type":    "server_error",
+				},
+			})
+			return
+		}
+
+		videoURL, err = getGeminiVideoURL(channel, task, apiKey)
+		if err != nil {
+			logger.LogError(c.Request.Context(), fmt.Sprintf("Failed to resolve Gemini video URL for task %s: %s", taskID, err.Error()))
+			c.JSON(http.StatusBadGateway, gin.H{
+				"error": gin.H{
+					"message": "Failed to resolve Gemini video URL",
+					"type":    "server_error",
+				},
+			})
+			return
+		}
+		req.Header.Set("x-goog-api-key", apiKey)
 	} else {
 		// Default (Sora, etc.): Use original logic
 		videoURL = fmt.Sprintf("%s/v1/videos/%s/content", baseURL, task.TaskID)