package com.vincent.rsf.server.ai.store.support;

import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.vincent.rsf.server.common.service.RedisService;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import redis.clients.jedis.Jedis;

import java.util.function.Consumer;
import java.util.function.Function;

@Slf4j
@Component
@RequiredArgsConstructor
public class AiRedisExecutor {

    private final RedisService redisService;
    private final ObjectMapper objectMapper;

    public <T> T readJson(String key, Class<T> type) {
        return readJson(key, value -> objectMapper.readValue(value, type));
    }

    public <T> T readJson(String key, TypeReference<T> typeReference) {
        return readJson(key, value -> objectMapper.readValue(value, typeReference));
    }

    public <T> T readJson(String key, JsonReader<T> reader) {
        return execute(jedis -> {
            String value = jedis.get(key);
            if (!StringUtils.hasText(value)) {
                return null;
            }
            try {
                return reader.read(value);
            } catch (Exception e) {
                log.warn("AI redis cache deserialize failed, key={}, message={}", key, e.getMessage());
                jedis.del(key);
                return null;
            }
        });
    }

    public void writeJson(String key, Object value, int ttlSeconds) {
        if (value == null) {
            delete(key);
            return;
        }
        executeVoid(jedis -> {
            try {
                jedis.setex(key, ttlSeconds, objectMapper.writeValueAsString(value));
            } catch (Exception e) {
                log.warn("AI redis cache serialize failed, key={}, message={}", key, e.getMessage());
            }
        });
    }

    public void delete(String key) {
        executeVoid(jedis -> jedis.del(key));
    }

    public <T> T execute(Function<Jedis, T> action) {
        Jedis jedis = redisService.getJedis();
        if (jedis == null) {
            return null;
        }
        try (jedis) {
            return action.apply(jedis);
        } catch (Exception e) {
            log.warn("AI redis operation skipped, message={}", e.getMessage());
            return null;
        }
    }

    public void executeVoid(Consumer<Jedis> action) {
        Jedis jedis = redisService.getJedis();
        if (jedis == null) {
            return;
        }
        try (jedis) {
            action.accept(jedis);
        } catch (Exception e) {
            log.warn("AI redis operation skipped, message={}", e.getMessage());
        }
    }

    @FunctionalInterface
    public interface JsonReader<T> {
        T read(String value) throws Exception;
    }
}