fix: unify device_handler.go response format

Standardize all JSON responses to {code: 0, message: "success", data: ...} for success
and {code: XXX, message: "..."} for errors.

internal/api/handler/device_handler.go

@@ -25,13 +25,13 @@ func NewDeviceHandler(deviceService *service.DeviceService) *DeviceHandler {
 func (h *DeviceHandler) CreateDevice(c *gin.Context) {
 	userID, ok := getUserIDFromContext(c)
 	if !ok {
-		c.JSON(http.StatusUnauthorized, gin.H{"error": "unauthorized"})
+		c.JSON(http.StatusUnauthorized, gin.H{"code": 401, "message": "unauthorized"})
 		return
 	}
 
 	var req service.CreateDeviceRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": err.Error()})
 		return
 	}
 
@@ -51,7 +51,7 @@ func (h *DeviceHandler) CreateDevice(c *gin.Context) {
 func (h *DeviceHandler) GetMyDevices(c *gin.Context) {
 	userID, ok := getUserIDFromContext(c)
 	if !ok {
-		c.JSON(http.StatusUnauthorized, gin.H{"error": "unauthorized"})
+		c.JSON(http.StatusUnauthorized, gin.H{"code": 401, "message": "unauthorized"})
 		return
 	}
 
@@ -65,12 +65,12 @@ func (h *DeviceHandler) GetMyDevices(c *gin.Context) {
 	}
 
 	c.JSON(http.StatusOK, gin.H{
-		"code": 0,
+		"code":    0,
 		"message": "success",
 		"data": gin.H{
-			"items":    devices,
+			"items":     devices,
-			"total":   total,
+			"total":    total,
-			"page":    page,
+			"page":     page,
 			"page_size": pageSize,
 		},
 	})
@@ -79,7 +79,7 @@ func (h *DeviceHandler) GetMyDevices(c *gin.Context) {
 func (h *DeviceHandler) GetDevice(c *gin.Context) {
 	id, err := strconv.ParseInt(c.Param("id"), 10, 64)
 	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid device id"})
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "invalid device id"})
 		return
 	}
 
@@ -99,13 +99,13 @@ func (h *DeviceHandler) GetDevice(c *gin.Context) {
 func (h *DeviceHandler) UpdateDevice(c *gin.Context) {
 	id, err := strconv.ParseInt(c.Param("id"), 10, 64)
 	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid device id"})
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "invalid device id"})
 		return
 	}
 
 	var req service.UpdateDeviceRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": err.Error()})
 		return
 	}
 
@@ -125,7 +125,7 @@ func (h *DeviceHandler) UpdateDevice(c *gin.Context) {
 func (h *DeviceHandler) DeleteDevice(c *gin.Context) {
 	id, err := strconv.ParseInt(c.Param("id"), 10, 64)
 	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid device id"})
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "invalid device id"})
 		return
 	}
 
@@ -143,7 +143,7 @@ func (h *DeviceHandler) DeleteDevice(c *gin.Context) {
 func (h *DeviceHandler) UpdateDeviceStatus(c *gin.Context) {
 	id, err := strconv.ParseInt(c.Param("id"), 10, 64)
 	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid device id"})
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "invalid device id"})
 		return
 	}
 
@@ -152,7 +152,7 @@ func (h *DeviceHandler) UpdateDeviceStatus(c *gin.Context) {
 	}
 
 	if err := c.ShouldBindJSON(&req); err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": err.Error()})
 		return
 	}
 
@@ -163,7 +163,7 @@ func (h *DeviceHandler) UpdateDeviceStatus(c *gin.Context) {
 	case "inactive", "0":
 		status = domain.DeviceStatusInactive
 	default:
-		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid status"})
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "invalid status"})
 		return
 	}
 
@@ -182,7 +182,7 @@ func (h *DeviceHandler) GetUserDevices(c *gin.Context) {
 	// IDOR 修复：检查当前用户是否有权限查看指定用户的设备
 	currentUserID, ok := getUserIDFromContext(c)
 	if !ok {
-		c.JSON(http.StatusUnauthorized, gin.H{"error": "unauthorized"})
+		c.JSON(http.StatusUnauthorized, gin.H{"code": 401, "message": "unauthorized"})
 		return
 	}
 
@@ -201,13 +201,13 @@ func (h *DeviceHandler) GetUserDevices(c *gin.Context) {
 	userIDParam := c.Param("id")
 	userID, err := strconv.ParseInt(userIDParam, 10, 64)
 	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid user id"})
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "invalid user id"})
 		return
 	}
 
 	// 非管理员只能查看自己的设备
 	if !isAdmin && userID != currentUserID {
-		c.JSON(http.StatusForbidden, gin.H{"error": "无权访问该用户的设备列表"})
+		c.JSON(http.StatusForbidden, gin.H{"code": 403, "message": "无权访问该用户的设备列表"})
 		return
 	}
 
@@ -221,7 +221,7 @@ func (h *DeviceHandler) GetUserDevices(c *gin.Context) {
 	}
 
 	c.JSON(http.StatusOK, gin.H{
-		"code": 0,
+		"code":    0,
 		"message": "success",
 		"data": gin.H{
 			"items":     devices,
@@ -236,7 +236,7 @@ func (h *DeviceHandler) GetUserDevices(c *gin.Context) {
 func (h *DeviceHandler) GetAllDevices(c *gin.Context) {
 	var req service.GetAllDevicesRequest
 	if err := c.ShouldBindQuery(&req); err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": err.Error()})
 		return
 	}
 
@@ -263,12 +263,12 @@ func (h *DeviceHandler) GetAllDevices(c *gin.Context) {
 	}
 
 	c.JSON(http.StatusOK, gin.H{
-		"code": 0,
+		"code":    0,
 		"message": "success",
 		"data": gin.H{
-			"items":    devices,
+			"items":     devices,
-			"total":   total,
+			"total":    total,
-			"page":    req.Page,
+			"page":     req.Page,
 			"page_size": req.PageSize,
 		},
 	})
@@ -283,13 +283,13 @@ type TrustDeviceRequest struct {
 func (h *DeviceHandler) TrustDevice(c *gin.Context) {
 	id, err := strconv.ParseInt(c.Param("id"), 10, 64)
 	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid device id"})
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "invalid device id"})
 		return
 	}
 
 	var req TrustDeviceRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": err.Error()})
 		return
 	}
 
@@ -311,19 +311,19 @@ func (h *DeviceHandler) TrustDevice(c *gin.Context) {
 func (h *DeviceHandler) TrustDeviceByDeviceID(c *gin.Context) {
 	userID, ok := getUserIDFromContext(c)
 	if !ok {
-		c.JSON(http.StatusUnauthorized, gin.H{"error": "unauthorized"})
+		c.JSON(http.StatusUnauthorized, gin.H{"code": 401, "message": "unauthorized"})
 		return
 	}
 
 	deviceID := c.Param("deviceId")
 	if deviceID == "" {
-		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid device id"})
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "invalid device id"})
 		return
 	}
 
 	var req TrustDeviceRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": err.Error()})
 		return
 	}
 
@@ -345,7 +345,7 @@ func (h *DeviceHandler) TrustDeviceByDeviceID(c *gin.Context) {
 func (h *DeviceHandler) UntrustDevice(c *gin.Context) {
 	id, err := strconv.ParseInt(c.Param("id"), 10, 64)
 	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid device id"})
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "invalid device id"})
 		return
 	}
 
@@ -364,7 +364,7 @@ func (h *DeviceHandler) UntrustDevice(c *gin.Context) {
 func (h *DeviceHandler) GetMyTrustedDevices(c *gin.Context) {
 	userID, ok := getUserIDFromContext(c)
 	if !ok {
-		c.JSON(http.StatusUnauthorized, gin.H{"error": "unauthorized"})
+		c.JSON(http.StatusUnauthorized, gin.H{"code": 401, "message": "unauthorized"})
 		return
 	}
 
@@ -385,7 +385,7 @@ func (h *DeviceHandler) GetMyTrustedDevices(c *gin.Context) {
 func (h *DeviceHandler) LogoutAllOtherDevices(c *gin.Context) {
 	userID, ok := getUserIDFromContext(c)
 	if !ok {
-		c.JSON(http.StatusUnauthorized, gin.H{"error": "unauthorized"})
+		c.JSON(http.StatusUnauthorized, gin.H{"code": 401, "message": "unauthorized"})
 		return
 	}
 
@@ -393,7 +393,7 @@ func (h *DeviceHandler) LogoutAllOtherDevices(c *gin.Context) {
 	currentDeviceIDStr := c.GetHeader("X-Device-ID")
 	currentDeviceID, err := strconv.ParseInt(currentDeviceIDStr, 10, 64)
 	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid current device id"})
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "invalid current device id"})
 		return
 	}