feat(BE): update DeleteOne method to use uint64 for ID and implement soft delete logic

internal/modules/expenses/repositories/expense.repository.go

@@ -3,6 +3,8 @@ package repository
 import (
 	"context"
 	"errors"
+	"fmt"
+	"time"
 
 	"gitlab.com/mbugroup/lti-api.git/internal/common/repository"
 	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
@@ -17,6 +19,7 @@ type ExpenseRepository interface {
 	GetWithSupplier(ctx context.Context, id uint64) (*entity.Expense, error)
 	WithProjectFlockKandangFilter(pfkID, kandangID uint) func(*gorm.DB) *gorm.DB
 	CountUnfinishedByProjectFlockKandang(ctx context.Context, pfkID, kandangID uint, isFinished func(*entity.Approval) bool) (int64, error)
+	DeleteOne(ctx context.Context, id uint) error
 }
 
 type ExpenseRepositoryImpl struct {
@@ -107,3 +110,23 @@ func (r *ExpenseRepositoryImpl) CountUnfinishedByProjectFlockKandang(ctx context
 	}
 	return unfinished, nil
 }
+
+func (r *ExpenseRepositoryImpl) DeleteOne(ctx context.Context, id uint) error {
+	// Cast to uint64 to match entity.Id type
+	id64 := uint64(id)
+	deletedAt := time.Now()
+
+	// Use raw SQL with interpolated integer to avoid type issues
+	// Interpolate id directly as integer literal (safe because it's uint64)
+	result := r.DB().WithContext(ctx).
+		Exec(`UPDATE "expenses" SET "deleted_at" = $1 WHERE "id" = `+fmt.Sprintf("%d", id64)+` AND "deleted_at" IS NULL`,
+			deletedAt)
+
+	if result.Error != nil {
+		return result.Error
+	}
+	if result.RowsAffected == 0 {
+		return gorm.ErrRecordNotFound
+	}
+	return nil
+}