feat(BE): finance (payment, initial_balance, injection). fix(BE): kandang capacity

internal/common/repository/common.exists.repository.go

@@ -2,6 +2,7 @@ package repository
 
 import (
 	"context"
+	"errors"
 	"fmt"
 
 	"gorm.io/gorm"
@@ -9,45 +10,59 @@ import (
 
 // Exists reports whether a record with the given ID exists for type T.
 func Exists[T any](ctx context.Context, db *gorm.DB, id uint) (bool, error) {
-	var count int64
-	if err := db.WithContext(ctx).
+	var marker int
+	err := db.WithContext(ctx).
 		Model(new(T)).
+		Select("1").
 		Where("id = ?", id).
-		Count(&count).Error; err != nil {
+		Limit(1).
+		Take(&marker).Error
+	if errors.Is(err, gorm.ErrRecordNotFound) {
+		return false, nil
+	}
+	if err != nil {
 		return false, err
 	}
-	return count > 0, nil
+	return true, nil
 }
 
 func ExistsByName[T any](ctx context.Context, db *gorm.DB, name string, excludeID *uint) (bool, error) {
-	var count int64
 	q := db.WithContext(ctx).
 		Model(new(T)).
+		Select("1").
 		Where("name = ?", name).
 		Where("deleted_at IS NULL")
 	if excludeID != nil {
 		q = q.Where("id <> ?", *excludeID)
 	}
-	if err := q.Count(&count).Error; err != nil {
+	var marker int
+	if err := q.Limit(1).Take(&marker).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return false, nil
+		}
 		return false, err
 	}
-	return count > 0, nil
+	return true, nil
 }
 
 func ExistsByField[T any](ctx context.Context, db *gorm.DB, field string, value any, excludeID *uint) (bool, error) {
 	if field == "" {
 		return false, fmt.Errorf("field is required")
 	}
-	var count int64
 	q := db.WithContext(ctx).
 		Model(new(T)).
+		Select("1").
 		Where(fmt.Sprintf("%s = ?", field), value).
 		Where("deleted_at IS NULL")
 	if excludeID != nil {
 		q = q.Where("id <> ?", *excludeID)
 	}
-	if err := q.Count(&count).Error; err != nil {
+	var marker int
+	if err := q.Limit(1).Take(&marker).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return false, nil
+		}
 		return false, err
 	}
-	return count > 0, nil
+	return true, nil
 }