[#385] Github REST API 호출을 Nexa를 사용하도록 수정한다 (#391)

* refactor: Nexa 라이브러리를 도입해 보일러플레이트 코드 제거

* style: 메서드에서 생성되는 로컬 클라이언트 변수를 한번만 생성하도록 개선

Author: opficdev

DevLog.xcodeproj/project.pbxproj

@@ -15,6 +15,7 @@
 		DFABA3B02E23526500FEFBDB /* FirebaseFirestore in Frameworks */ = {isa = PBXBuildFile; productRef = DFABA3AF2E23526500FEFBDB /* FirebaseFirestore */; };
 		DFABA3B22E23526500FEFBDB /* FirebaseFunctions in Frameworks */ = {isa = PBXBuildFile; productRef = DFABA3B12E23526500FEFBDB /* FirebaseFunctions */; };
 		DFABA3B42E23526500FEFBDB /* FirebaseMessaging in Frameworks */ = {isa = PBXBuildFile; productRef = DFABA3B32E23526500FEFBDB /* FirebaseMessaging */; };
+		DFD3B68D2F8F1FB8001DA7CD /* Nexa in Frameworks */ = {isa = PBXBuildFile; productRef = DFD3B68C2F8F1FB8001DA7CD /* Nexa */; };
 		DFD645402EC827A10073E133 /* .gitignore in Resources */ = {isa = PBXBuildFile; fileRef = DFD6453F2EC827A10073E133 /* .gitignore */; };
 		DFD74E2F2E423EA700613803 /* README.md in Resources */ = {isa = PBXBuildFile; fileRef = DFD74E2E2E423EA700613803 /* README.md */; };
 		DFF2DACE2EDC02AD00778738 /* OrderedCollections in Frameworks */ = {isa = PBXBuildFile; productRef = DFF2DACD2EDC02AD00778738 /* OrderedCollections */; };
@@ -76,6 +77,7 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				DFD3B68D2F8F1FB8001DA7CD /* Nexa in Frameworks */,
 				DFABA3B42E23526500FEFBDB /* FirebaseMessaging in Frameworks */,
 				DFABA3A92E2351EE00FEFBDB /* GoogleSignInSwift in Frameworks */,
 				DFABA3B22E23526500FEFBDB /* FirebaseFunctions in Frameworks */,
@@ -172,6 +174,7 @@
 				DFABA3B12E23526500FEFBDB /* FirebaseFunctions */,
 				DFABA3B32E23526500FEFBDB /* FirebaseMessaging */,
 				DFF2DACD2EDC02AD00778738 /* OrderedCollections */,
+				DFD3B68C2F8F1FB8001DA7CD /* Nexa */,
 			);
 			productName = SwiftUI_DevLog;
 			productReference = DFD48B002DC4D6E2005905C5 /* DevLog.app */;
@@ -211,6 +214,7 @@
 				DFABA3AA2E23526500FEFBDB /* XCRemoteSwiftPackageReference "firebase-ios-sdk" */,
 				DF66A07B2EA52E970098E643 /* XCRemoteSwiftPackageReference "SwiftLint" */,
 				DFF2DACC2EDC02AD00778738 /* XCRemoteSwiftPackageReference "swift-collections" */,
+				DFD3B68B2F8F1FB8001DA7CD /* XCRemoteSwiftPackageReference "Nexa" */,
 			);
 			preferredProjectObjectVersion = 77;
 			productRefGroup = DFD48B012DC4D6E2005905C5 /* Products */;
@@ -610,6 +614,14 @@
 				minimumVersion = 11.15.0;
 			};
 		};
+		DFD3B68B2F8F1FB8001DA7CD /* XCRemoteSwiftPackageReference "Nexa" */ = {
+			isa = XCRemoteSwiftPackageReference;
+			repositoryURL = "https://github.com/opficdev/Nexa";
+			requirement = {
+				kind = upToNextMajorVersion;
+				minimumVersion = 1.1.0;
+			};
+		};
 		DFF2DACC2EDC02AD00778738 /* XCRemoteSwiftPackageReference "swift-collections" */ = {
 			isa = XCRemoteSwiftPackageReference;
 			repositoryURL = "https://github.com/apple/swift-collections.git";
@@ -666,6 +678,11 @@
 			package = DFABA3AA2E23526500FEFBDB /* XCRemoteSwiftPackageReference "firebase-ios-sdk" */;
 			productName = FirebaseMessaging;
 		};
+		DFD3B68C2F8F1FB8001DA7CD /* Nexa */ = {
+			isa = XCSwiftPackageProductDependency;
+			package = DFD3B68B2F8F1FB8001DA7CD /* XCRemoteSwiftPackageReference "Nexa" */;
+			productName = Nexa;
+		};
 		DFF2DACD2EDC02AD00778738 /* OrderedCollections */ = {
 			isa = XCSwiftPackageProductDependency;
 			package = DFF2DACC2EDC02AD00778738 /* XCRemoteSwiftPackageReference "swift-collections" */;

DevLog.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -11,20 +11,32 @@ import FirebaseAuth
 import FirebaseFirestore
 import FirebaseFunctions
 import FirebaseMessaging
+import Nexa
 
 final class GithubAuthenticationService: NSObject, AuthenticationService {
     private enum FunctionName: String {
         case requestGithubTokens
         case revokeGithubAccessToken
     }
 
+    private enum GitHubAPI {
+        static let baseURL = URL(string: "https://api.github.com")!
+        static let acceptHeader = "application/vnd.github.v3+json"
+    }
+
     private let store = Firestore.firestore()
     private let functions = Functions.functions(region: "asia-northeast3")
     private let messaging = Messaging.messaging()
     private var user: User? { Auth.auth().currentUser }
     private let providerID = AuthProviderID.gitHub
     private let provider = TopViewControllerProvider()
     private let logger = Logger(category: "GithubAuthService")
+    private let gitHubApiClient = NXAPIClient(
+        configuration: NXClientConfiguration(
+            baseURL: GitHubAPI.baseURL,
+            headers: ["Accept": GitHubAPI.acceptHeader]
+        )
+    )
 
     func signIn() async throws -> AuthDataResponse {
         logger.info("Starting GitHub sign in")
@@ -243,24 +255,11 @@ final class GithubAuthenticationService: NSObject, AuthenticationService {
 
     // GitHub API로 사용자 프로필 정보 가져오기
     private func requestUserProfile(accessToken: String) async throws -> GitHubUser {
-        guard let url = URL(string: "https://api.github.com/user") else {
-            throw URLError(.badURL)
-        }
-
-        var request = URLRequest(url: url)
-        request.httpMethod = "GET"
-        request.addValue("Bearer \(accessToken)", forHTTPHeaderField: "Authorization")
-        request.addValue("application/vnd.github.v3+json", forHTTPHeaderField: "Accept")
-        
-        let (data, response) = try await URLSession.shared.data(for: request)
-        
-        guard let httpResponse = response as? HTTPURLResponse,
-              httpResponse.statusCode == 200 else {
-            throw URLError(.badServerResponse)
-        }
-        
-        let decoder = JSONDecoder()
-        let gitHubUser = try decoder.decode(GitHubUser.self, from: data)
+        let gitHubUser = try await gitHubApiClient
+            .get("/user", as: GitHubUser.self)
+            .header("Authorization", "Bearer \(accessToken)")
+            .validate(.statusCodes([200]))
+            .send()
 
         if gitHubUser.email != nil {
             return gitHubUser
@@ -276,24 +275,11 @@ final class GithubAuthenticationService: NSObject, AuthenticationService {
     }
 
     private func requestPrimaryVerifiedEmail(accessToken: String) async throws -> String? {
-        guard let url = URL(string: "https://api.github.com/user/emails") else {
-            throw URLError(.badURL)
-        }
-
-        var request = URLRequest(url: url)
-        request.httpMethod = "GET"
-        request.addValue("Bearer \(accessToken)", forHTTPHeaderField: "Authorization")
-        request.addValue("application/vnd.github.v3+json", forHTTPHeaderField: "Accept")
-
-        let (data, response) = try await URLSession.shared.data(for: request)
-
-        guard let httpResponse = response as? HTTPURLResponse,
-              httpResponse.statusCode == 200 else {
-            throw URLError(.badServerResponse)
-        }
-
-        let decoder = JSONDecoder()
-        let gitHubEmails = try decoder.decode([GitHubEmail].self, from: data)
+        let gitHubEmails = try await gitHubApiClient
+            .get("/user/emails", as: [GitHubEmail].self)
+            .header("Authorization", "Bearer \(accessToken)")
+            .validate(.statusCodes([200]))
+            .send()
 
         if let primaryVerifiedEmail = gitHubEmails.first(where: { $0.primary && $0.verified }) {
             return primaryVerifiedEmail.email