refactor: PaymentProperties에 API 기본 경로 추가 및 코틀린 마이그레이션

src/main/java/roomescape/payment/infrastructure/client/PaymentProperties.kt

@@ -1,29 +1,11 @@
-package roomescape.payment.infrastructure.client;
+package roomescape.payment.infrastructure.client
 
-import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.boot.context.properties.ConfigurationProperties
 
 @ConfigurationProperties(prefix = "payment")
-public class PaymentProperties {
-
-	private final String confirmSecretKey;
-	private final int readTimeout;
-	private final int connectTimeout;
-
-	public PaymentProperties(String confirmSecretKey, int readTimeout, int connectTimeout) {
-		this.confirmSecretKey = confirmSecretKey;
-		this.readTimeout = readTimeout;
-		this.connectTimeout = connectTimeout;
-	}
-
-	public String getConfirmSecretKey() {
-		return confirmSecretKey;
-	}
-
-	public int getReadTimeout() {
-		return readTimeout;
-	}
-
-	public int getConnectTimeout() {
-		return connectTimeout;
-	}
-}
+data class PaymentProperties(
+        @JvmField val apiBaseUrl: String,
+        @JvmField val confirmSecretKey: String,
+        @JvmField val readTimeout: Int,
+        @JvmField val connectTimeout: Int
+)

src/main/resources/application.yaml

@@ -25,6 +25,7 @@ security:
         expire-length: 1800000 # 30 분
 
 payment:
+  api-base-url: https://api.tosspayments.com
   confirm-secret-key: test_gsk_docs_OaPz8L5KdmQXkzRz3y47BMw6
   read-timeout: 3
   connect-timeout: 30