package com.wecom.robot.util;

import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Component;

import java.util.concurrent.TimeUnit;

@Slf4j
@Component
@RequiredArgsConstructor
public class IdempotentHelper {

    private static final String KEY_PREFIX = "idempotent:";
    private static final long DEFAULT_TTL_HOURS = 1;

    private final StringRedisTemplate redisTemplate;

    public boolean processMessageIdempotent(String channelMessageId, Runnable processor) {
        String key = KEY_PREFIX + channelMessageId;
        Boolean absent = redisTemplate.opsForValue()
                .setIfAbsent(key, "1", DEFAULT_TTL_HOURS, TimeUnit.HOURS);

        if (Boolean.TRUE.equals(absent)) {
            processor.run();
            return true;
        }

        log.info("[AC-MCA-11-IDEMPOTENT] 重复消息，跳过处理: channelMessageId={}", channelMessageId);
        return false;
    }

    public boolean checkAndSet(String channelMessageId) {
        String key = KEY_PREFIX + channelMessageId;
        Boolean absent = redisTemplate.opsForValue()
                .setIfAbsent(key, "1", DEFAULT_TTL_HOURS, TimeUnit.HOURS);

        if (Boolean.TRUE.equals(absent)) {
            return true;
        }

        log.info("[AC-MCA-11-IDEMPOTENT] 重复消息检测: channelMessageId={}", channelMessageId);
        return false;
    }

    public boolean exists(String channelMessageId) {
        String key = KEY_PREFIX + channelMessageId;
        return Boolean.TRUE.equals(redisTemplate.hasKey(key));
    }

    public void remove(String channelMessageId) {
        String key = KEY_PREFIX + channelMessageId;
        redisTemplate.delete(key);
    }
}