añadidos ficheros a falta de modificar el servicio y el controlador redsys

src/main/java/com/imprimelibros/erp/payments/repo/IdempotencyKeyRepository.java

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+// IdempotencyKeyRepository.java
+package com.imprimelibros.erp.payments.repo;
+
+import com.imprimelibros.erp.payments.model.IdempotencyKey;
+import com.imprimelibros.erp.payments.model.IdempotencyScope;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.Optional;
+
+public interface IdempotencyKeyRepository extends JpaRepository<IdempotencyKey, Long> {
+    Optional<IdempotencyKey> findByScopeAndIdemKey(IdempotencyScope scope, String idemKey);
+}

src/main/java/com/imprimelibros/erp/payments/repo/PaymentMethodRepository.java

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+// PaymentMethodRepository.java
+package com.imprimelibros.erp.payments.repo;
+
+import com.imprimelibros.erp.payments.model.PaymentMethod;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface PaymentMethodRepository extends JpaRepository<PaymentMethod, Long> {}

src/main/java/com/imprimelibros/erp/payments/repo/PaymentRepository.java

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+// PaymentRepository.java
+package com.imprimelibros.erp.payments.repo;
+
+import com.imprimelibros.erp.payments.model.Payment;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.Optional;
+
+public interface PaymentRepository extends JpaRepository<Payment, Long> {
+    Optional<Payment> findByGatewayAndGatewayOrderId(String gateway, String gatewayOrderId);
+}

src/main/java/com/imprimelibros/erp/payments/repo/PaymentTransactionRepository.java

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+// PaymentTransactionRepository.java
+package com.imprimelibros.erp.payments.repo;
+
+import com.imprimelibros.erp.payments.model.PaymentTransaction;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.Optional;
+
+public interface PaymentTransactionRepository extends JpaRepository<PaymentTransaction, Long> {
+    Optional<PaymentTransaction> findByGatewayTransactionId(String gatewayTransactionId);
+    Optional<PaymentTransaction> findByIdempotencyKey(String idempotencyKey);
+}

src/main/java/com/imprimelibros/erp/payments/repo/RefundRepository.java

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+// RefundRepository.java
+package com.imprimelibros.erp.payments.repo;
+
+import com.imprimelibros.erp.payments.model.Refund;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+
+public interface RefundRepository extends JpaRepository<Refund, Long> {
+    @Query("select coalesce(sum(r.amountCents),0) from Refund r where r.payment.id = :paymentId and r.status = com.imprimelibros.erp.payments.model.RefundStatus.SUCCEEDED")
+    long sumSucceededByPaymentId(@Param("paymentId") Long paymentId);
+}

src/main/java/com/imprimelibros/erp/payments/repo/WebhookEventRepository.java

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+// WebhookEventRepository.java
+package com.imprimelibros.erp.payments.repo;
+
+import com.imprimelibros.erp.payments.model.WebhookEvent;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface WebhookEventRepository extends JpaRepository<WebhookEvent, Long> {}