[FIX/BE-US] debt-supplier only show receive and changes lunas

internal/modules/repports/services/repport.service.go

@@ -1156,12 +1156,6 @@ func (s *repportService) GetDebtSupplier(c *fiber.Ctx, params *validation.DebtSu
 		return nil, 0, err
 	}
 
-	references := collectDebtSupplierReferences(purchases)
-	paymentSummaries, err := s.DebtSupplierRepo.GetPaymentSummariesByReferences(c.Context(), supplierIDs, references)
-	if err != nil {
-		return nil, 0, err
-	}
-
 	location, err := time.LoadLocation("Asia/Jakarta")
 	if err != nil {
 		return nil, 0, fiber.NewError(fiber.StatusInternalServerError, "failed to load timezone configuration")
@@ -1176,6 +1170,16 @@ func (s *repportService) GetDebtSupplier(c *fiber.Ctx, params *validation.DebtSu
 		DeltaBalance float64
 		CountTotals  bool
 	}
+	type debtSupplierAllocation struct {
+		RowIndex int
+		SortTime time.Time
+		Amount   float64
+		Purchase entity.Purchase
+	}
+	type paymentAllocation struct {
+		Date   time.Time
+		Amount float64
+	}
 
 	for _, supplierID := range supplierIDs {
 		supplier, exists := supplierMap[supplierID]
@@ -1189,19 +1193,11 @@ func (s *repportService) GetDebtSupplier(c *fiber.Ctx, params *validation.DebtSu
 		total := dto.DebtSupplierTotalDTO{}
 
 		combinedRows := make([]debtSupplierRowItem, 0, len(items)+len(paymentItems))
+		purchaseAllocations := make([]debtSupplierAllocation, 0, len(items))
 		for _, purchase := range items {
 			row := buildDebtSupplierRow(purchase, now, location)
-			if reference := resolveDebtSupplierReference(purchase); reference != "" {
-				if summary, ok := paymentSummaries[reference]; ok {
-					if isDebtSupplierPaid(row.TotalPrice, summary.Total) {
-						row.Status = "Lunas"
-						if !summary.LatestPaymentDate.IsZero() {
-							row.Aging = calculateDebtSupplierAging(purchase, summary.LatestPaymentDate, location)
-						}
-					}
-				}
-			}
 			sortTime := resolveDebtSupplierSortTime(purchase, params.FilterBy, location)
+			rowIndex := len(combinedRows)
 			combinedRows = append(combinedRows, debtSupplierRowItem{
 				Row:          row,
 				SortTime:     sortTime,
@@ -1209,6 +1205,24 @@ func (s *repportService) GetDebtSupplier(c *fiber.Ctx, params *validation.DebtSu
 				DeltaBalance: -row.TotalPrice,
 				CountTotals:  true,
 			})
+			purchaseAllocations = append(purchaseAllocations, debtSupplierAllocation{
+				RowIndex: rowIndex,
+				SortTime: sortTime,
+				Amount:   row.TotalPrice,
+				Purchase: purchase,
+			})
+		}
+
+		paymentAllocations := make([]paymentAllocation, 0, len(paymentItems)+1)
+		initialAllocation := initialBalanceTotals[supplierID] + initialPaymentTotals[supplierID] - initialPurchaseTotals[supplierID]
+		paymentCarry := 0.0
+		if initialAllocation > 0 && len(purchaseAllocations) > 0 {
+			paymentAllocations = append(paymentAllocations, paymentAllocation{
+				Date:   purchaseAllocations[0].SortTime,
+				Amount: initialAllocation,
+			})
+		} else if initialAllocation < 0 {
+			paymentCarry = -initialAllocation
 		}
 
 		for _, payment := range paymentItems {
@@ -1221,6 +1235,53 @@ func (s *repportService) GetDebtSupplier(c *fiber.Ctx, params *validation.DebtSu
 				DeltaBalance: payment.Nominal,
 				CountTotals:  false,
 			})
+			paymentAllocations = append(paymentAllocations, paymentAllocation{
+				Date:   sortTime,
+				Amount: payment.Nominal,
+			})
+		}
+
+		if len(purchaseAllocations) > 0 && len(paymentAllocations) > 0 {
+			sort.SliceStable(purchaseAllocations, func(i, j int) bool {
+				return purchaseAllocations[i].SortTime.Before(purchaseAllocations[j].SortTime)
+			})
+			sort.SliceStable(paymentAllocations, func(i, j int) bool {
+				return paymentAllocations[i].Date.Before(paymentAllocations[j].Date)
+			})
+			remaining := make([]float64, len(purchaseAllocations))
+			for i := range purchaseAllocations {
+				remaining[i] = purchaseAllocations[i].Amount
+			}
+			purchaseIndex := 0
+			for _, pay := range paymentAllocations {
+				amount := pay.Amount
+				if amount <= 0 {
+					continue
+				}
+				if paymentCarry > 0 {
+					used := math.Min(amount, paymentCarry)
+					paymentCarry -= used
+					amount -= used
+				}
+				for amount > 0 && purchaseIndex < len(remaining) {
+					if remaining[purchaseIndex] <= 0 {
+						purchaseIndex++
+						continue
+					}
+					used := math.Min(amount, remaining[purchaseIndex])
+					remaining[purchaseIndex] -= used
+					amount -= used
+					if remaining[purchaseIndex] <= 0.000001 {
+						allocation := purchaseAllocations[purchaseIndex]
+						combinedRows[allocation.RowIndex].Row.Status = "Lunas"
+						combinedRows[allocation.RowIndex].Row.Aging = calculateDebtSupplierAging(allocation.Purchase, pay.Date, location)
+						purchaseIndex++
+					}
+				}
+				if purchaseIndex >= len(remaining) {
+					break
+				}
+			}
 		}
 
 		sort.SliceStable(combinedRows, func(i, j int) bool {