package com.rongyichuang.carousel.repository;

import com.rongyichuang.carousel.entity.Carousel;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
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;

/**
 * 轮播图数据访问层
 */
@Repository
public interface CarouselRepository extends JpaRepository<Carousel, Long> {

    /**
     * 根据标题模糊查询轮播图（分页）
     */
    @Query("SELECT c FROM Carousel c WHERE (:title IS NULL OR c.title LIKE %:title%) ORDER BY c.sortOrder ASC, c.createTime DESC")
    Page<Carousel> findByTitleContaining(@Param("title") String title, Pageable pageable);

    /**
     * 获取播放列表（按播放顺序排序，取前5个）
     */
    @Query(value = "SELECT c FROM Carousel c WHERE c.sortOrder IS NOT NULL ORDER BY c.sortOrder ASC")
    List<Carousel> findPlayList(Pageable pageable);

    /**
     * 查询所有轮播图（按播放顺序和创建时间排序）
     */
    @Query("SELECT c FROM Carousel c ORDER BY c.sortOrder ASC, c.createTime DESC")
    List<Carousel> findAllOrderBySortOrder();
}