package com.ltkj.framework.config;

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.script.DefaultRedisScript;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import redis.clients.jedis.JedisPoolConfig;

import java.io.*;
import java.util.Properties;

/**
 * redis配置
 *
 * @author ltkj
 */
@Configuration
@EnableCaching
@Slf4j
public class RedisConfig extends CachingConfigurerSupport {

    @Value ("${config.properties}")
    private String url;

    @Value ("${config.path}")
    private  String path;

    @Bean
    @SuppressWarnings(value = {"unchecked", "rawtypes"})
    public RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory connectionFactory) {
        RedisTemplate<Object, Object> template = new RedisTemplate<>();
        template.setConnectionFactory(connectionFactory);

        FastJson2JsonRedisSerializer serializer = new FastJson2JsonRedisSerializer(Object.class);

        // 使用StringRedisSerializer来序列化和反序列化redis的key值
        template.setKeySerializer(new StringRedisSerializer());
        template.setValueSerializer(serializer);

        // Hash的key也采用StringRedisSerializer的序列化方式
        template.setHashKeySerializer(new StringRedisSerializer());
        template.setHashValueSerializer(serializer);

        template.afterPropertiesSet();
        return template;
    }

    @Bean
    public JedisPoolConfig jedisPoolConfig() {
        JedisPoolConfig config = new JedisPoolConfig();
        // 设置JedisPoolConfig的相关参数，例如最大连接数、最大空闲时间等
//        config.setMinIdle(0);
//        config.setMaxIdle(8);
//        config.setMaxTotal(8);
//        config.setMaxWaitMillis(-1);
//        config.setTestOnBorrow(true);
//        config.setTestOnReturn(true);
        return config;
    }
    @Bean
    public RedisConnectionFactory redisConnectionFactory(JedisPoolConfig jedisPoolConfig) {
        JedisConnectionFactory factory = new JedisConnectionFactory();
        // 从文件中读取配置信息
        try {
            FileInputStream fis = null;
            Properties props = new Properties();
            try {
                fis = new FileInputStream(url);
            } catch (FileNotFoundException e) {
                log.info("配置文件找不到 系统正在创建！");
                File f = new File(path);
                if(!f.exists()){
                    f.mkdirs();
                }
                File file = new File(url);
                try {
                    FileWriter fileWriter = new FileWriter(file);
                    fileWriter.write("ip = 你的主数据库连接ip地址\n");
                    fileWriter.write("prot = 你的主数据库连接端口\n");
                    fileWriter.write("name = 你的主数据库连接名称\n");
                    fileWriter.write("username = 你的主数据库连接用户名\n");
                    fileWriter.write("password = 你的主数据库连接密码\n");
                    fileWriter.write("hisenabled = 是否开启 his 从库数据库连接 (从数据源开关/默认关闭 fales)\n");
                    fileWriter.write("\n");

                    fileWriter.write("hisip = 你的 his 数据库连接ip地址\n");
                    fileWriter.write("hisprot = 你的 his 数据库连接端口\n");
                    fileWriter.write("hisname = 你的 his 数据库连接名称\n");
                    fileWriter.write("hisusername = 你的 his 数据库连接用户名\n");
                    fileWriter.write("hispassword = 你的 his 数据库连接密码\n");
                    fileWriter.write("\n");

                    fileWriter.write("pacsenabled = 是否开启pacs从库数据库连接 (从数据源开关/默认关闭 fales)\n");
                    fileWriter.write("pacsip = 你的pacs数据库连接ip地址\n");
                    fileWriter.write("pacsprot = 你的pacs数据库连接端口\n");
                    fileWriter.write("pacsname = 你的pacs数据库连接名称\n");
                    fileWriter.write("pacsusername = 你的pacs数据库连接用户名\n");
                    fileWriter.write("pacspassword = 你的pacs数据库连接密码\n");
                    fileWriter.write("\n");

                    fileWriter.write("lisenabled = 是否开启 lis 从库数据库连接 (从数据源开关/默认关闭 fales)\n");
                    fileWriter.write("lisip = 你的 lis 数据库连接ip地址\n");
                    fileWriter.write("lisprot = 你的 lis 数据库连接端口\n");
                    fileWriter.write("lisname = 你的 lis 数据库连接名称\n");
                    fileWriter.write("lisusername = 你的 lis 数据库连接用户名\n");
                    fileWriter.write("lispassword = 你的 lis 数据库连接密码\n");
                    fileWriter.write("redisIp = 你的redisIp地址\n");
                    fileWriter.write("redisProt = 你的redis端口\n");
                    fileWriter.write("redisIpDatabase = 你的redis链接库\n");
                    fileWriter.write("redisPassword = 你的redis密码\n");
                    fileWriter.write("\n");
                    fileWriter.close();
                    log.info("配置文件创建成功！");
                } catch (IOException ioException) {
                    log.info("配置文件创建失败  请联系管理员手动创建！");
                    ioException.printStackTrace();
                }
                e.printStackTrace();
            }
            props.load(fis);
            fis.close();
            // 获取属性值并赋值
            factory.setPoolConfig(jedisPoolConfig);
            // 设置Redis服务器的地址和端口号
            factory.setHostName(props.getProperty("redisIp"));
            factory.setPort(Integer.parseInt(props.getProperty("redisProt")));
            // 如果需要密码验证，设置密码
            factory.setPassword(props.getProperty("redisPassword"));
            // 设置其他参数，如数据库索引等
            factory.setDatabase(Integer.parseInt(props.getProperty("redisIpDatabase")));
            // 最后，初始化连接
            factory.afterPropertiesSet();
            log.info("redis连接成功!!!");
        } catch (IOException e) {
            log.info("redis连接失败  请联系管理员！");
            e.printStackTrace();
        }
        return factory;
    }


    @Bean
    public DefaultRedisScript<Long> limitScript() {
        DefaultRedisScript<Long> redisScript = new DefaultRedisScript<>();
        redisScript.setScriptText(limitScriptText());
        redisScript.setResultType(Long.class);
        return redisScript;
    }

    /**
     * 限流脚本
     */
    private String limitScriptText() {
        return "local key = KEYS[1]\n" +
                "local count = tonumber(ARGV[1])\n" +
                "local time = tonumber(ARGV[2])\n" +
                "local current = redis.call('get', key);\n" +
                "if current and tonumber(current) > count then\n" +
                "    return tonumber(current);\n" +
                "end\n" +
                "current = redis.call('incr', key)\n" +
                "if tonumber(current) == 1 then\n" +
                "    redis.call('expire', key, time)\n" +
                "end\n" +
                "return tonumber(current);";
    }
}