feat: cash advance

internal/processor/expense_processor.go

@@ -3,6 +3,7 @@ package processor
 import (
 	"context"
 	"fmt"
+	"strings"
 	"time"
 
 	"apskel-pos-be/internal/constants"
@@ -25,12 +26,14 @@ type ExpenseProcessor interface {
 type ExpenseProcessorImpl struct {
 	expenseRepo          ExpenseRepository
 	purchaseCategoryRepo PurchaseCategoryRepository
+	cashAdvanceRepo      CashAdvanceRepository
 }
 
-func NewExpenseProcessorImpl(expenseRepo ExpenseRepository, purchaseCategoryRepo PurchaseCategoryRepository) *ExpenseProcessorImpl {
+func NewExpenseProcessorImpl(expenseRepo ExpenseRepository, purchaseCategoryRepo PurchaseCategoryRepository, cashAdvanceRepo CashAdvanceRepository) *ExpenseProcessorImpl {
 	return &ExpenseProcessorImpl{
 		expenseRepo:          expenseRepo,
 		purchaseCategoryRepo: purchaseCategoryRepo,
+		cashAdvanceRepo:      cashAdvanceRepo,
 	}
 }
 
@@ -50,6 +53,11 @@ func (p *ExpenseProcessorImpl) CreateExpense(ctx context.Context, organizationID
 		status = *req.Status
 	}
 
+	cashAdvanceID, err := p.resolveExpenseCashAdvance(ctx, organizationID, outletID, req.CashAdvanceID)
+	if err != nil {
+		return nil, err
+	}
+
 	items := make([]entities.ExpenseItem, len(req.Items))
 	for i, itemReq := range req.Items {
 		chartOfAccountID, err := uuid.Parse(itemReq.ChartOfAccountID)
@@ -84,6 +92,7 @@ func (p *ExpenseProcessorImpl) CreateExpense(ctx context.Context, organizationID
 		Description:     req.Description,
 		Tax:             req.Tax,
 		Total:           req.Total,
+		CashAdvanceID:   cashAdvanceID,
 	}
 
 	err = p.expenseRepo.Create(ctx, expenseEntity)
@@ -149,6 +158,14 @@ func (p *ExpenseProcessorImpl) UpdateExpense(ctx context.Context, id, organizati
 	if req.Reserved1 != nil {
 		expenseEntity.Reserved1 = req.Reserved1
 	}
+	// An empty cash_advance_id unlinks the expense; omitting the field leaves it alone.
+	if req.CashAdvanceID != nil {
+		cashAdvanceID, err := p.resolveExpenseCashAdvance(ctx, organizationID, expenseEntity.OutletID, req.CashAdvanceID)
+		if err != nil {
+			return nil, err
+		}
+		expenseEntity.CashAdvanceID = cashAdvanceID
+	}
 
 	var items []entities.ExpenseItem
 	if req.Items != nil {
@@ -334,6 +351,25 @@ func (p *ExpenseProcessorImpl) GetExpenseAnalytics(ctx context.Context, req *mod
 	}, nil
 }
 
+// resolveExpenseCashAdvance checks the expense may be charged to the cash advance it names.
+// An empty value means no cash advance at all, which is how an update unlinks one.
+func (p *ExpenseProcessorImpl) resolveExpenseCashAdvance(ctx context.Context, organizationID, outletID uuid.UUID, raw *string) (*uuid.UUID, error) {
+	if raw == nil || strings.TrimSpace(*raw) == "" {
+		return nil, nil
+	}
+
+	cashAdvanceID, err := uuid.Parse(strings.TrimSpace(*raw))
+	if err != nil {
+		return nil, fmt.Errorf("invalid cash_advance_id: %w", err)
+	}
+
+	if _, err := resolveSpendingCashAdvance(ctx, p.cashAdvanceRepo, cashAdvanceID, organizationID, &outletID); err != nil {
+		return nil, err
+	}
+
+	return &cashAdvanceID, nil
+}
+
 func (p *ExpenseProcessorImpl) validateExpensePurchaseCategory(ctx context.Context, categoryID, organizationID uuid.UUID) error {
 	category, err := p.purchaseCategoryRepo.GetByIDAndOrganizationID(ctx, categoryID, organizationID)
 	if err != nil {