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

internal/modules/finance/injections/repositories/injection.repository.go

@@ -0,0 +1,41 @@
+package repository
+
+import (
+	"context"
+
+	"gitlab.com/mbugroup/lti-api.git/internal/common/repository"
+	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
+	"gorm.io/gorm"
+)
+
+type InjectionRepository interface {
+	repository.BaseRepository[entity.Payment]
+	BankExists(ctx context.Context, bankId uint) (bool, error)
+	NextPaymentSequence(ctx context.Context) (int64, error)
+}
+
+type InjectionRepositoryImpl struct {
+	*repository.BaseRepositoryImpl[entity.Payment]
+	db *gorm.DB
+}
+
+func NewInjectionRepository(db *gorm.DB) InjectionRepository {
+	return &InjectionRepositoryImpl{
+		BaseRepositoryImpl: repository.NewBaseRepository[entity.Payment](db),
+		db:                 db,
+	}
+}
+
+func (r *InjectionRepositoryImpl) BankExists(ctx context.Context, bankId uint) (bool, error) {
+	return repository.Exists[entity.Bank](ctx, r.db, bankId)
+}
+
+func (r *InjectionRepositoryImpl) NextPaymentSequence(ctx context.Context) (int64, error) {
+	var next int64
+	if err := r.db.WithContext(ctx).
+		Raw("SELECT nextval('payments_code_seq')").
+		Scan(&next).Error; err != nil {
+		return 0, err
+	}
+	return next, nil
+}