package com.rongyichuang.common.repository;

import com.rongyichuang.common.entity.Media;
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.util.List;

@Repository
public interface MediaRepository extends JpaRepository<Media, Long> {
    
    /**
     * 根据目标类型和目标ID查询媒体列表
     */
    List<Media> findByTargetTypeAndTargetIdAndState(Integer targetType, Long targetId, Integer state);
    
    /**
     * 批量查询媒体列表
     */
    List<Media> findByTargetTypeAndTargetIdInAndState(Integer targetType, List<Long> targetIds, Integer state);
    
    /**
     * 批量统计媒体数量
     */
    @Query("SELECT m.targetId, COUNT(m) FROM Media m WHERE m.targetType = :targetType AND m.targetId IN :targetIds AND m.state = :state GROUP BY m.targetId")
    List<Object[]> countByTargetTypeAndTargetIdInAndState(@Param("targetType") Integer targetType, @Param("targetIds") List<Long> targetIds, @Param("state") Integer state);
    
    /**
     * 检查ID是否存在
     */
    boolean existsById(Long id);
}