roomescape-refactored/src/main/kotlin/roomescape/payment/infrastructure/client/PaymentConfig.kt

package roomescape.payment.infrastructure.client

import org.springframework.boot.context.properties.EnableConfigurationProperties
import org.springframework.boot.http.client.ClientHttpRequestFactoryBuilder
import org.springframework.boot.http.client.ClientHttpRequestFactorySettings
import org.springframework.context.annotation.Bean
import org.springframework.context.annotation.Configuration
import org.springframework.web.client.RestClient
import java.nio.charset.StandardCharsets
import java.time.Duration
import java.util.*

@Configuration
@EnableConfigurationProperties(PaymentProperties::class)
class PaymentConfig {

    @Bean
    fun tossPaymentClientBuilder(
        paymentProperties: PaymentProperties,
    ): RestClient.Builder {
        val settings: ClientHttpRequestFactorySettings = ClientHttpRequestFactorySettings.defaults().also {
            it.withReadTimeout(Duration.ofSeconds(paymentProperties.readTimeout.toLong()))
            it.withConnectTimeout(Duration.ofSeconds(paymentProperties.connectTimeout.toLong()))
        }
        val requestFactory = ClientHttpRequestFactoryBuilder.jdk().build(settings)

        return RestClient.builder()
            .baseUrl(paymentProperties.apiBaseUrl)
            .defaultHeader("Authorization", getAuthorizations(paymentProperties.confirmSecretKey))
            .requestFactory(requestFactory)
    }

    private fun getAuthorizations(secretKey: String): String {
        val encodedSecretKey = Base64.getEncoder()
            .encodeToString("$secretKey:".toByteArray(StandardCharsets.UTF_8))

        return "Basic $encodedSecretKey"
    }
}