package com.paymentlink.repository;

import com.paymentlink.model.entity.ExchangeRate;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.repository.query.Param;
import org.springframework.stereotype.Repository;

import java.time.LocalDateTime;
import java.util.List;
import java.util.Optional;

@Repository
public interface ExchangeRateRepository extends JpaRepository<ExchangeRate, Long> {

    @Query("SELECT e FROM ExchangeRate e WHERE e.fromCurrency = :from " +
           "AND e.toCurrency = :to AND e.expiresAt > :now ORDER BY e.fetchedAt DESC")
    Optional<ExchangeRate> findValidRate(
            @Param("from") String fromCurrency,
            @Param("to") String toCurrency,
            @Param("now") LocalDateTime now);

    Optional<ExchangeRate> findByFromCurrencyAndToCurrency(String fromCurrency, String toCurrency);

    @Query("SELECT e FROM ExchangeRate e WHERE e.expiresAt < :now")
    List<ExchangeRate> findExpiredRates(@Param("now") LocalDateTime now);

    void deleteByExpiresAtBefore(LocalDateTime expiryDate);
}