[FEAT/BE] fixing fifo fallback recording,fixing backdate and fixing product category

internal/utils/recording/util.recording.go

@@ -1,6 +1,9 @@
 package recording
 
 import (
+	"fmt"
+	"strings"
+
 	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
 	validation "gitlab.com/mbugroup/lti-api.git/internal/modules/production/recordings/validations"
 )
@@ -70,3 +73,87 @@ func MapEggs(recordingID uint, createdBy uint, items []validation.Egg) []entity.
 	}
 	return result
 }
+
+type EggTotals struct {
+	Qty    int
+	Weight float64
+}
+
+func StockUsageByWarehouse(items []entity.RecordingStock) map[uint]float64 {
+	return TotalsByWarehouse(items, func(stock entity.RecordingStock) (uint, float64) {
+		var usage float64
+		if stock.UsageQty != nil {
+			usage = *stock.UsageQty
+		}
+		return stock.ProductWarehouseId, usage
+	})
+}
+
+func StockUsageByWarehouseReq(items []validation.Stock) map[uint]float64 {
+	return TotalsByWarehouse(items, func(item validation.Stock) (uint, float64) {
+		return item.ProductWarehouseId, item.Qty
+	})
+}
+
+func FloatMapsEqual(a, b map[uint]float64) bool {
+	if len(a) != len(b) {
+		return false
+	}
+	for key, value := range a {
+		other, ok := b[key]
+		if !ok || !floatNearlyEqual(value, other) {
+			return false
+		}
+	}
+	return true
+}
+
+func EggTotalsEqual(a, b map[uint]EggTotals) bool {
+	if len(a) != len(b) {
+		return false
+	}
+	for key, value := range a {
+		other, ok := b[key]
+		if !ok || value.Qty != other.Qty || !floatNearlyEqual(value.Weight, other.Weight) {
+			return false
+		}
+	}
+	return true
+}
+
+func floatNearlyEqual(a, b float64) bool {
+	return a-b <= 0.000001 && b-a <= 0.000001
+}
+
+func TotalsByWarehouse[T any](items []T, get func(T) (uint, float64)) map[uint]float64 {
+	result := make(map[uint]float64)
+	for _, item := range items {
+		warehouseID, qty := get(item)
+		result[warehouseID] += qty
+	}
+	return result
+}
+
+func EggTotalsByWarehouse[T any](items []T, get func(T) (uint, int, *float64)) map[uint]EggTotals {
+	result := make(map[uint]EggTotals)
+	for _, item := range items {
+		warehouseID, qty, weightPtr := get(item)
+		weight := 0.0
+		if weightPtr != nil {
+			weight = *weightPtr
+		}
+		current := result[warehouseID]
+		current.Qty += qty
+		current.Weight += weight
+		result[warehouseID] = current
+	}
+	return result
+}
+
+func RecordingNote(action string, id uint) string {
+	action = strings.TrimSpace(action)
+	if action == "" {
+		return fmt.Sprintf("Recording#%d", id)
+	}
+	return fmt.Sprintf("Recording-%s#%d", action, id)
+}