first commit

internal/mysqldao/order.go

@@ -0,0 +1,82 @@
+package mysqldao
+
+import (
+	"context"
+
+	"git.lzcwy.cn/zhengchiliu/zt-closet-manage-backend/global"
+	"git.lzcwy.cn/zhengchiliu/zt-closet-manage-backend/internal/mysqlmodel"
+	"gorm.io/gorm"
+)
+
+// OrderDao 订单数据访问
+type OrderDao struct {
+	db *gorm.DB
+}
+
+// NewOrderDao 创建订单 DAO
+func NewOrderDao() *OrderDao {
+	return &OrderDao{db: global.MysqlEngine}
+}
+
+// OrderListParams 订单分页列表筛选参数。
+type OrderListParams struct {
+	OrderNo string // 订单号（精确）
+	UserID  int64  // 用户 ID，0 表示全部
+	Status  int8   // 订单状态，0 表示全部
+	Page    int
+	Size    int
+}
+
+// OrderList 分页查询订单
+func (d *OrderDao) OrderList(ctx context.Context, p OrderListParams) ([]mysqlmodel.Order, int64, error) {
+	ctx, span := global.Tracer.Start(ctx, "mysqldao.OrderList")
+	defer span.End()
+
+	var list []mysqlmodel.Order
+	var total int64
+	q := d.db.WithContext(ctx).Model(&mysqlmodel.Order{})
+	if p.OrderNo != "" {
+		q = q.Where("order_no = ?", p.OrderNo)
+	}
+	if p.UserID != 0 {
+		q = q.Where("user_id = ?", p.UserID)
+	}
+	if p.Status != 0 {
+		q = q.Where("order_status = ?", p.Status)
+	}
+	if err := q.Count(&total).Error; err != nil {
+		span.RecordError(err)
+		return nil, 0, err
+	}
+	if err := q.Offset((p.Page - 1) * p.Size).Limit(p.Size).Order("id DESC").Find(&list).Error; err != nil {
+		span.RecordError(err)
+		return nil, 0, err
+	}
+	return list, total, nil
+}
+
+// OrderGetByOrderNo 按订单号查询订单
+func (d *OrderDao) OrderGetByOrderNo(ctx context.Context, orderNo string) (*mysqlmodel.Order, error) {
+	ctx, span := global.Tracer.Start(ctx, "mysqldao.OrderGetByOrderNo")
+	defer span.End()
+
+	var order mysqlmodel.Order
+	if err := d.db.WithContext(ctx).Where("order_no = ?", orderNo).First(&order).Error; err != nil {
+		span.RecordError(err)
+		return nil, err
+	}
+	return &order, nil
+}
+
+// OrderGetByID 按主键 ID 查询订单
+func (d *OrderDao) OrderGetByID(ctx context.Context, id int64) (*mysqlmodel.Order, error) {
+	ctx, span := global.Tracer.Start(ctx, "mysqldao.OrderGetByID")
+	defer span.End()
+
+	var order mysqlmodel.Order
+	if err := d.db.WithContext(ctx).First(&order, id).Error; err != nil {
+		span.RecordError(err)
+		return nil, err
+	}
+	return &order, nil
+}