sodalive-backend-spring-boot/src/main/kotlin/kr/co/vividnext/sodalive/configs/RedisConfig.kt

package kr.co.vividnext.sodalive.configs

import org.redisson.Redisson
import org.redisson.api.RedissonClient
import org.redisson.config.Config
import org.springframework.beans.factory.annotation.Value
import org.springframework.cache.annotation.EnableCaching
import org.springframework.context.annotation.Bean
import org.springframework.context.annotation.Configuration
import org.springframework.data.redis.cache.RedisCacheConfiguration
import org.springframework.data.redis.cache.RedisCacheManager
import org.springframework.data.redis.connection.RedisConnectionFactory
import org.springframework.data.redis.connection.RedisStandaloneConfiguration
import org.springframework.data.redis.connection.lettuce.LettuceClientConfiguration
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory
import org.springframework.data.redis.core.RedisTemplate
import org.springframework.data.redis.repository.configuration.EnableRedisRepositories
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer
import org.springframework.data.redis.serializer.RedisSerializationContext
import org.springframework.data.redis.serializer.StringRedisSerializer
import java.time.Duration

@Configuration
@EnableCaching
@EnableRedisRepositories
class RedisConfig(
    @Value("\${spring.redis.host}")
    private val host: String,
    @Value("\${spring.redis.port}")
    private val port: Int
) {
    @Bean(destroyMethod = "shutdown")
    fun redissonClient(): RedissonClient {
        val config = Config()
        config.useSingleServer()
            .setAddress("rediss://$host:$port")
            .setSslEnableEndpointIdentification(true)
            .setSslTruststore(null)
            .setDnsMonitoringInterval(30000)
            .setConnectionMinimumIdleSize(0)
            .setConnectionPoolSize(5)
        return Redisson.create(config)
    }

    @Bean
    fun redisConnectionFactory(): RedisConnectionFactory {
        val clientConfiguration = LettuceClientConfiguration.builder()
            .useSsl()
            .disablePeerVerification()
            .build()

        return LettuceConnectionFactory(RedisStandaloneConfiguration(host, port), clientConfiguration)
    }

    @Bean
    fun redisTemplate(): RedisTemplate<*, *> {
        val redisTemplate: RedisTemplate<*, *> = RedisTemplate<Any, Any>()
        redisTemplate.setConnectionFactory(redisConnectionFactory())
        return redisTemplate
    }

    @Bean
    fun cacheManager(redisConnectionFactory: RedisConnectionFactory): RedisCacheManager {
        val defaultCacheConfig = RedisCacheConfiguration.defaultCacheConfig()
            .entryTtl(Duration.ofMinutes(30))
            .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(StringRedisSerializer()))
            .serializeValuesWith(
                RedisSerializationContext.SerializationPair.fromSerializer(
                    GenericJackson2JsonRedisSerializer()
                )
            )

        val cacheConfigMap = mutableMapOf<String, RedisCacheConfiguration>()
        cacheConfigMap["default"] = RedisCacheConfiguration.defaultCacheConfig()
            .entryTtl(Duration.ofMinutes(30))
            .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(StringRedisSerializer()))
            .serializeValuesWith(
                RedisSerializationContext.SerializationPair.fromSerializer(
                    GenericJackson2JsonRedisSerializer()
                )
            )
        cacheConfigMap["cache_ttl_3_days"] = RedisCacheConfiguration.defaultCacheConfig()
            .entryTtl(Duration.ofDays(3))
            .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(StringRedisSerializer()))
            .serializeValuesWith(
                RedisSerializationContext.SerializationPair.fromSerializer(
                    GenericJackson2JsonRedisSerializer()
                )
            )
        cacheConfigMap["cache_ttl_3_hours"] = RedisCacheConfiguration.defaultCacheConfig()
            .entryTtl(Duration.ofHours(3))
            .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(StringRedisSerializer()))
            .serializeValuesWith(
                RedisSerializationContext.SerializationPair.fromSerializer(
                    GenericJackson2JsonRedisSerializer()
                )
            )

        cacheConfigMap["cache_ttl_10_minutes"] = RedisCacheConfiguration.defaultCacheConfig()
            .entryTtl(Duration.ofMinutes(10))
            .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(StringRedisSerializer()))
            .serializeValuesWith(
                RedisSerializationContext.SerializationPair.fromSerializer(
                    GenericJackson2JsonRedisSerializer()
                )
            )

        cacheConfigMap["cache_ttl_5_minutes"] = RedisCacheConfiguration.defaultCacheConfig()
            .entryTtl(Duration.ofMinutes(5))
            .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(StringRedisSerializer()))
            .serializeValuesWith(
                RedisSerializationContext.SerializationPair.fromSerializer(
                    GenericJackson2JsonRedisSerializer()
                )
            )

        cacheConfigMap["cache_ttl_3_minutes"] = RedisCacheConfiguration.defaultCacheConfig()
            .entryTtl(Duration.ofMinutes(3))
            .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(StringRedisSerializer()))
            .serializeValuesWith(
                RedisSerializationContext.SerializationPair.fromSerializer(
                    GenericJackson2JsonRedisSerializer()
                )
            )

        // 24시간 TTL 캐시: 인기 캐릭터 집계용
        cacheConfigMap["popularCharacters_24h"] = RedisCacheConfiguration.defaultCacheConfig()
            .entryTtl(Duration.ofHours(24))
            .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(StringRedisSerializer()))
            .serializeValuesWith(
                RedisSerializationContext.SerializationPair.fromSerializer(
                    GenericJackson2JsonRedisSerializer()
                )
            )

        return RedisCacheManager.builder(redisConnectionFactory)
            .cacheDefaults(defaultCacheConfig)
            .withInitialCacheConfigurations(cacheConfigMap)
            .build()
    }
}