实现修改批次绑定的猪栏

internal/app/controller/management/pig_batch_controller.go

@@ -188,3 +188,48 @@ func (c *PigBatchController) ListPigBatches(ctx *gin.Context) {
 
 	controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "获取成功", respDTOs, action, "获取成功", respDTOs)
 }
+
+// UpdatePigBatchPens godoc
+// @Summary      更新猪批次关联的猪栏
+// @Description  更新指定猪批次当前关联的猪栏列表
+// @Tags         猪批次管理
+// @Accept       json
+// @Produce      json
+// @Param        id path int true "猪批次ID"
+// @Param        body body dto.PigBatchUpdatePensRequest true "猪批次关联的猪栏ID列表"
+// @Success      200 {object} controller.Response "更新成功"
+// @Failure      400 {object} controller.Response "请求参数错误或无效的ID格式"
+// @Failure      404 {object} controller.Response "猪批次或猪栏不存在"
+// @Failure      409 {object} controller.Response "业务逻辑冲突 (如猪栏已被占用)"
+// @Failure      500 {object} controller.Response "内部服务器错误"
+// @Router       /api/v1/pig-batches/{id}/pens [put]
+func (c *PigBatchController) UpdatePigBatchPens(ctx *gin.Context) {
+	const action = "更新猪批次关联猪栏"
+	batchID, err := strconv.ParseUint(ctx.Param("id"), 10, 32)
+	if err != nil {
+		controller.SendErrorWithAudit(ctx, controller.CodeBadRequest, "无效的猪批次ID格式", action, "ID格式错误", ctx.Param("id"))
+		return
+	}
+
+	var req dto.PigBatchUpdatePensRequest
+	if err := ctx.ShouldBindJSON(&req); err != nil {
+		controller.SendErrorWithAudit(ctx, controller.CodeBadRequest, "无效的请求体", action, "请求体绑定失败", req)
+		return
+	}
+
+	err = c.service.UpdatePigBatchPens(uint(batchID), req.PenIDs)
+	if err != nil {
+		if errors.Is(err, service.ErrPigBatchNotFound) || errors.Is(err, service.ErrPenNotFound) {
+			controller.SendErrorWithAudit(ctx, controller.CodeNotFound, err.Error(), action, err.Error(), batchID)
+			return
+		} else if errors.Is(err, service.ErrPigBatchNotActive) || errors.Is(err, service.ErrPenOccupiedByOtherBatch) || errors.Is(err, service.ErrPenStatusInvalidForAllocation) || errors.Is(err, service.ErrPenNotAssociatedWithBatch) {
+			controller.SendErrorWithAudit(ctx, controller.CodeConflict, err.Error(), action, err.Error(), batchID)
+			return
+		}
+		c.logger.Errorf("%s: 业务逻辑失败: %v", action, err)
+		controller.SendErrorWithAudit(ctx, controller.CodeInternalError, "更新猪批次关联猪栏失败", action, err.Error(), batchID)
+		return
+	}
+
+	controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "更新成功", nil, action, "更新成功", batchID)
+}

internal/app/controller/management/pig_farm_controller.go

@@ -229,7 +229,7 @@ func (c *PigFarmController) CreatePen(ctx *gin.Context) {
 		HouseID:    pen.HouseID,
 		Capacity:   pen.Capacity,
 		Status:     pen.Status,
-		PigBatchID: pen.PigBatchID,
+		PigBatchID: *pen.PigBatchID,
 	}
 	controller.SendSuccessWithAudit(ctx, controller.CodeCreated, "创建成功", resp, action, "创建成功", resp)
 }
@@ -267,7 +267,7 @@ func (c *PigFarmController) GetPen(ctx *gin.Context) {
 		HouseID:    pen.HouseID,
 		Capacity:   pen.Capacity,
 		Status:     pen.Status,
-		PigBatchID: pen.PigBatchID,
+		PigBatchID: *pen.PigBatchID,
 	}
 	controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "获取成功", resp, action, "获取成功", resp)
 }
@@ -296,7 +296,7 @@ func (c *PigFarmController) ListPens(ctx *gin.Context) {
 			HouseID:    pen.HouseID,
 			Capacity:   pen.Capacity,
 			Status:     pen.Status,
-			PigBatchID: pen.PigBatchID,
+			PigBatchID: *pen.PigBatchID,
 		})
 	}
 
@@ -344,7 +344,7 @@ func (c *PigFarmController) UpdatePen(ctx *gin.Context) {
 		HouseID:    pen.HouseID,
 		Capacity:   pen.Capacity,
 		Status:     pen.Status,
-		PigBatchID: pen.PigBatchID,
+		PigBatchID: *pen.PigBatchID,
 	}
 	controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "更新成功", resp, action, "更新成功", resp)
 }