feat: update admin

backend/app/models/orders.go

@@ -203,3 +203,43 @@ func (m *ordersModel) SetStatus(ctx context.Context, orderNo string, status fiel
 	}
 	return nil
 }
+
+// Count
+func (m *ordersModel) Count(ctx context.Context, cond BoolExpression) (int64, error) {
+	tbl := table.Orders
+	stmt := SELECT(COUNT(tbl.ID).AS("cnt")).FROM(tbl).WHERE(cond)
+	m.log.Infof("sql: %s", stmt.DebugSql())
+
+	var cnt struct {
+		Cnt int64
+	}
+
+	err := stmt.QueryContext(ctx, db, &cnt)
+	if err != nil {
+		m.log.Errorf("error counting orders: %v", err)
+		return 0, err
+	}
+
+	return cnt.Cnt, nil
+}
+
+// SumAmount
+func (m *ordersModel) SumAmount(ctx context.Context) (int64, error) {
+	tbl := table.Orders
+	stmt := SELECT(SUM(tbl.Price).AS("cnt")).FROM(tbl).WHERE(
+		tbl.Status.EQ(Int(int64(fields.OrderStatusPaid))),
+	)
+	m.log.Infof("sql: %s", stmt.DebugSql())
+
+	var cnt struct {
+		Cnt int64
+	}
+
+	err := stmt.QueryContext(ctx, db, &cnt)
+	if err != nil {
+		m.log.Errorf("error summing order amount: %v", err)
+		return 0, err
+	}
+
+	return cnt.Cnt, nil
+}