feat: Adapter를 통해 각 OAuth 제공 벤더별로 Provider 객체를 생성하고 전달한다 (#35)

BE/src/main/java/org/team4/airbnb/auth/config/OauthAdapter.java

@@ -0,0 +1,20 @@
+package org.team4.airbnb.auth.config;
+
+import java.util.HashMap;
+import java.util.Map;
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
+
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
+public class OauthAdapter {
+
+	public static Map<String, OauthProvider> getOauthProviders(OauthProperties properties) {
+		Map<String, OauthProvider> oauthProviders = new HashMap<>();
+
+		properties.getUsers().forEach(
+			(vendor, user) -> oauthProviders.put(vendor, OauthProvider.from(user, properties.getProviders()
+				.get(vendor))));
+		return oauthProviders;
+	}
+
+}

BE/src/main/java/org/team4/airbnb/auth/config/OauthProvider.java

@@ -0,0 +1,35 @@
+package org.team4.airbnb.auth.config;
+
+import lombok.Builder;
+import org.team4.airbnb.auth.config.OauthProperties.Provider;
+import org.team4.airbnb.auth.config.OauthProperties.User;
+
+
+public class OauthProvider {
+
+	private final String clientId;
+	private final String clientSecret;
+	private final String redirectUrl;
+	private final String tokenUrl;
+	private final String userInfoUrl;
+
+	public static OauthProvider from(User user, Provider provider) {
+		return OauthProvider.builder()
+			.clientId(user.getClientId())
+			.clientSecret(user.getClientSecret())
+			.redirectUrl(user.getRedirectUri())
+			.tokenUrl(provider.getTokenUri())
+			.userInfoUrl(provider.getUserInfoUri())
+			.build();
+	}
+
+	@Builder
+	private OauthProvider(String clientId, String clientSecret, String redirectUrl, String tokenUrl,
+		String userInfoUrl) {
+		this.clientId = clientId;
+		this.clientSecret = clientSecret;
+		this.redirectUrl = redirectUrl;
+		this.tokenUrl = tokenUrl;
+		this.userInfoUrl = userInfoUrl;
+	}
+}