wangjia
279 lines
8.3 KiB
Go
279 lines
8.3 KiB
Go
package handler
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import (
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"fmt"
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"net/http"
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"strconv"
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"github.com/gin-gonic/gin"
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"gorm.io/gorm"
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"github.com/wangjia/jiu/backend/internal/middleware"
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"github.com/wangjia/jiu/backend/internal/model"
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"github.com/wangjia/jiu/backend/internal/service"
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)
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type StockOutHandler struct {
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db *gorm.DB
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stockSvc *service.StockService
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}
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func NewStockOutHandler(db *gorm.DB, svc *service.StockService) *StockOutHandler {
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return &StockOutHandler{db: db, stockSvc: svc}
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}
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// List GET /api/v1/stock-out/orders
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func (h *StockOutHandler) List(c *gin.Context) {
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shopID := middleware.GetShopID(c)
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page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
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pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "20"))
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query := h.db.Model(&model.StockOutOrder{}).
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Where("shop_id = ? AND deleted_at IS NULL", shopID)
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if status := c.Query("status"); status != "" {
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query = query.Where("status = ?", status)
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}
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if startDate := c.Query("start_date"); startDate != "" {
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query = query.Where("order_date >= ?", startDate)
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}
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if endDate := c.Query("end_date"); endDate != "" {
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query = query.Where("order_date <= ?", endDate)
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}
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var total int64
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query.Count(&total)
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orders := make([]model.StockOutOrder, 0)
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query.Preload("Warehouse").Preload("Partner").Preload("Operator").Preload("Reviewer").
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Offset((page - 1) * pageSize).Limit(pageSize).
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Order("id DESC").Find(&orders)
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c.JSON(http.StatusOK, gin.H{"data": orders, "total": total, "page": page, "page_size": pageSize})
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}
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// Get GET /api/v1/stock-out/orders/:id
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func (h *StockOutHandler) Get(c *gin.Context) {
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shopID := middleware.GetShopID(c)
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var order model.StockOutOrder
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if err := h.db.Preload("Items.Product").Preload("Warehouse").Preload("Partner").Preload("Operator").Preload("Reviewer").
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Where("id = ? AND shop_id = ? AND deleted_at IS NULL", c.Param("id"), shopID).
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First(&order).Error; err != nil {
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c.JSON(http.StatusNotFound, gin.H{"error": "not found"})
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return
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}
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c.JSON(http.StatusOK, gin.H{"data": order})
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}
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// checkInventory validates that warehouse has enough stock for each item (SUM aggregate).
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// warehouseID is the order's warehouse; items are the stock-out line items.
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func (h *StockOutHandler) checkInventory(shopID, warehouseID uint64, items []model.StockOutItem) error {
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if len(items) == 0 {
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return nil
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}
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// Collect product IDs
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productIDs := make([]uint64, 0, len(items))
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for _, item := range items {
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productIDs = append(productIDs, item.ProductID)
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}
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type inventorySum struct {
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ProductID uint64
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Total float64
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}
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var sums []inventorySum
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h.db.Model(&model.Inventory{}).
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Select("product_id, COALESCE(SUM(quantity), 0) AS total").
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Where("shop_id = ? AND warehouse_id = ? AND product_id IN ? AND deleted_at IS NULL",
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shopID, warehouseID, productIDs).
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Group("product_id").Scan(&sums)
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// Build map for quick lookup
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sumMap := make(map[uint64]float64, len(sums))
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for _, s := range sums {
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sumMap[s.ProductID] = s.Total
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}
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for _, item := range items {
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have := sumMap[item.ProductID]
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if have < item.Quantity {
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// Get product name for a clearer error message
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var p model.Product
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h.db.Where("id = ?", item.ProductID).First(&p)
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name := p.Name
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if name == "" {
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name = fmt.Sprintf("商品ID %d", item.ProductID)
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}
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return fmt.Errorf("库存不足：%s 当前库存 %.0f，需要 %.0f", name, have, item.Quantity)
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}
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}
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return nil
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}
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// Create POST /api/v1/stock-out/orders
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func (h *StockOutHandler) Create(c *gin.Context) {
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shopID := middleware.GetShopID(c)
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operatorID := middleware.GetUserID(c)
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var req model.StockOutOrder
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if err := c.ShouldBindJSON(&req); err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
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return
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}
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req.ShopID = shopID
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req.OperatorID = operatorID
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// 状态只允许 draft 或 pending；直接提交审核时校验库存
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if req.Status == "pending" {
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if err := h.checkInventory(shopID, req.WarehouseID, req.Items); err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
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return
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}
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} else {
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req.Status = "draft"
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}
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orderNo, err := h.stockSvc.GenerateOrderNo(shopID, "stock_out")
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
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return
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}
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req.OrderNo = orderNo
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var total float64
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for i := range req.Items {
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req.Items[i].ShopID = shopID
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req.Items[i].TotalPrice = req.Items[i].Quantity * req.Items[i].UnitPrice
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total += req.Items[i].TotalPrice
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}
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req.TotalAmount = total
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if err := h.db.Create(&req).Error; err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
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return
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}
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c.JSON(http.StatusCreated, gin.H{"data": req})
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}
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// Update PUT /api/v1/stock-out/orders/:id （只允许草稿状态）
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func (h *StockOutHandler) Update(c *gin.Context) {
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shopID := middleware.GetShopID(c)
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var order model.StockOutOrder
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if err := h.db.Where("id = ? AND shop_id = ? AND status = 'draft' AND deleted_at IS NULL", c.Param("id"), shopID).
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First(&order).Error; err != nil {
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c.JSON(http.StatusNotFound, gin.H{"error": "出库单不存在或不可修改"})
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return
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}
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var req model.StockOutOrder
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if err := c.ShouldBindJSON(&req); err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
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return
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}
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err := h.db.Transaction(func(tx *gorm.DB) error {
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if err := tx.Where("order_id = ?", order.ID).Delete(&model.StockOutItem{}).Error; err != nil {
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return err
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}
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var total float64
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for i := range req.Items {
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req.Items[i].ShopID = shopID
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req.Items[i].OrderID = order.ID
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req.Items[i].TotalPrice = req.Items[i].Quantity * req.Items[i].UnitPrice
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total += req.Items[i].TotalPrice
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}
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updates := map[string]interface{}{
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"warehouse_id": req.WarehouseID,
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"partner_id": req.PartnerID,
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"order_date": req.OrderDate,
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"remark": req.Remark,
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"total_amount": total,
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}
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if err := tx.Model(&order).Updates(updates).Error; err != nil {
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return err
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}
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if len(req.Items) > 0 {
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if err := tx.Create(&req.Items).Error; err != nil {
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return err
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}
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}
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return nil
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})
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
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return
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}
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c.JSON(http.StatusOK, gin.H{"message": "updated"})
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}
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// Delete DELETE /api/v1/stock-out/orders/:id （只允许草稿状态）
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func (h *StockOutHandler) Delete(c *gin.Context) {
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shopID := middleware.GetShopID(c)
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now := timeNow()
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result := h.db.Model(&model.StockOutOrder{}).
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Where("id = ? AND shop_id = ? AND status = 'draft' AND deleted_at IS NULL", c.Param("id"), shopID).
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Update("deleted_at", now)
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if result.RowsAffected == 0 {
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c.JSON(http.StatusNotFound, gin.H{"error": "出库单不存在或不可删除"})
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return
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}
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c.JSON(http.StatusOK, gin.H{"message": "deleted"})
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}
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// Submit PUT /api/v1/stock-out/orders/:id/submit
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func (h *StockOutHandler) Submit(c *gin.Context) {
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shopID := middleware.GetShopID(c)
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// 加载订单及明细，校验库存后再改状态
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var order model.StockOutOrder
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if err := h.db.Preload("Items").
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Where("id = ? AND shop_id = ? AND status = 'draft'", c.Param("id"), shopID).
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First(&order).Error; err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": "order not found or not in draft status"})
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return
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}
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if err := h.checkInventory(shopID, order.WarehouseID, order.Items); err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
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return
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}
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h.db.Model(&order).Update("status", "pending")
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c.JSON(http.StatusOK, gin.H{"message": "submitted"})
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}
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// Approve PUT /api/v1/stock-out/orders/:id/approve
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func (h *StockOutHandler) Approve(c *gin.Context) {
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shopID := middleware.GetShopID(c)
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reviewerID := middleware.GetUserID(c)
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id, _ := strconv.ParseUint(c.Param("id"), 10, 64)
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if err := h.stockSvc.ApproveStockOut(shopID, id, reviewerID); err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
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return
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}
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c.JSON(http.StatusOK, gin.H{"message": "approved"})
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}
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// Reject PUT /api/v1/stock-out/orders/:id/reject
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func (h *StockOutHandler) Reject(c *gin.Context) {
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shopID := middleware.GetShopID(c)
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reviewerID := middleware.GetUserID(c)
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now := timeNow()
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result := h.db.Model(&model.StockOutOrder{}).
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Where("id = ? AND shop_id = ? AND status = 'pending'", c.Param("id"), shopID).
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Updates(map[string]interface{}{
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"status": "rejected",
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"reviewer_id": reviewerID,
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"reviewed_at": now,
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})
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if result.RowsAffected == 0 {
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c.JSON(http.StatusBadRequest, gin.H{"error": "order not found or not in pending status"})
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return
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}
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c.JSON(http.StatusOK, gin.H{"message": "rejected"})
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}
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