import org.example.Main;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.redis.core.RedisTemplate;

import java.util.List;
import java.util.Set;

@SpringBootTest(classes = Main.class)
public class ListTest {
    @Autowired
    private RedisTemplate<String,String> redisTemplate;

    //增加
    @Test
    public void testAdd(){
        //从左边添加一个元素
        redisTemplate.opsForList().leftPush("students","zhangshan");
        //从左边添加多个元素 不能添加多个？
        redisTemplate.opsForList().leftPush("students","lishi","wangwu");

        //从右边添加一个元素
        redisTemplate.opsForList().rightPush("students","zhangshan1");
        //从右边添加多个元素 不能添加多个？
        redisTemplate.opsForList().rightPush("students","lishi1","wangwu1");

        System.out.println(redisTemplate.opsForList().range("students", 0, -1));
    }

    @Test
    public void testFind(){
        //根据key和元素索引进行查询
        //0和正数代表从左边开始
        //负数代表从右边开始
        String students = redisTemplate.opsForList().index("students", 1);
        System.out.println(students);

        String students1 = redisTemplate.opsForList().index("students", -1);
        System.out.println(students1);

        //范围查询
        //根据key 【start,end】 包括首尾
        List<String> students2 = redisTemplate.opsForList().range("students", 0, 2);
        for (String s : students2) {
            System.out.println(s);
        }
    }
    //删除
    @Test
    public void testRemove(){
        //从左边删除第一个元素
        String s = redisTemplate.opsForList().leftPop("students");
        //从右边删除第一个元素
        String s1 = redisTemplate.opsForList().rightPop("students");

        //count > 0; 删除左边起第几个等于指定值的元素
        //count < 0; 删除右边起第几个等于指定值的元素
        //count = 0; 删除所有等于value的元素
        //删除左边起第二个wangwu
        redisTemplate.opsForList().remove("students",0,"zhangshan1");
        redisTemplate.opsForList().remove("students",0,"zhangshan");
        System.out.println(redisTemplate.opsForList().range("students", 0, -1));
    }
}