Feature/#70 kakao login server

composeApp/build.gradle.kts

@@ -58,8 +58,10 @@ kotlin {
       implementation(libs.glance.material3)
       implementation(libs.compose.runtime)
       implementation(libs.kakao.sdk.v2.user)
+      implementation(libs.ktor.client.okhttp)
     }
     iosMain.dependencies {
+      implementation(libs.ktor.client.darwin)
     }
     commonMain.dependencies {
       implementation(compose.runtime)
@@ -92,6 +94,11 @@ kotlin {
       implementation(libs.kmp.firebase.analytics)
       implementation(libs.napier)
       implementation(libs.kinappbrowser)
+
+      implementation(libs.ktor.client.core)
+      implementation(libs.ktor.client.content.negotiation)
+      implementation(libs.ktor.serialization.kotlinx.json)
+      implementation(libs.ktor.client.logging)
     }
     commonTest.dependencies {
       implementation(libs.kotlin.test)

composeApp/src/androidMain/kotlin/com/chukchukhaksa/mobile/common/kmp/HttpClientEngine.android.kt

@@ -0,0 +1,6 @@
+package com.chukchukhaksa.mobile.common.kmp
+
+import io.ktor.client.engine.HttpClientEngineFactory
+import io.ktor.client.engine.okhttp.OkHttp
+
+actual val httpClientEngineFactory: HttpClientEngineFactory<*> = OkHttp

composeApp/src/androidMain/kotlin/com/chukchukhaksa/mobile/common/kmp/KakaoSignInClient.android.kt

@@ -17,6 +17,7 @@ actual class KakaoSignInClient {
             ?: throw IllegalStateException("Android Context is required for Kakao Login")
 
         val nonce = UUID.randomUUID().toString()
+        val hashedNonce = sha256Hex(nonce)
 
         return suspendCancellableCoroutine { continuation ->
             val callback: (OAuthToken?, Throwable?) -> Unit = callback@{ token, error ->
@@ -37,13 +38,13 @@ actual class KakaoSignInClient {
             if (UserApiClient.instance.isKakaoTalkLoginAvailable(androidContext)) {
                 UserApiClient.instance.loginWithKakaoTalk(
                     context = androidContext,
-                    nonce = nonce,
+                    nonce = hashedNonce,
                 ) { token, error ->
                     if (error != null) {
                         if (error is ClientError && error.reason == ClientErrorCause.Cancelled) {
                             UserApiClient.instance.loginWithKakaoAccount(
                                 context = androidContext,
-                                nonce = nonce,
+                                nonce = hashedNonce,
                                 callback = callback,
                             )
                             return@loginWithKakaoTalk
@@ -56,7 +57,7 @@ actual class KakaoSignInClient {
             } else {
                 UserApiClient.instance.loginWithKakaoAccount(
                     context = androidContext,
-                    nonce = nonce,
+                    nonce = hashedNonce,
                     callback = callback,
                 )
             }

composeApp/src/androidMain/kotlin/com/chukchukhaksa/mobile/common/kmp/Sha256.android.kt

@@ -0,0 +1,8 @@
+package com.chukchukhaksa.mobile.common.kmp
+
+import java.security.MessageDigest
+
+actual fun sha256Hex(input: String): String {
+    val bytes = MessageDigest.getInstance("SHA-256").digest(input.toByteArray())
+    return bytes.joinToString("") { "%02x".format(it) }
+}

composeApp/src/commonMain/kotlin/com/chukchukhaksa/mobile/common/kmp/HttpClientEngine.kt

@@ -0,0 +1,5 @@
+package com.chukchukhaksa.mobile.common.kmp
+
+import io.ktor.client.engine.HttpClientEngineFactory
+
+expect val httpClientEngineFactory: HttpClientEngineFactory<*>

composeApp/src/commonMain/kotlin/com/chukchukhaksa/mobile/common/kmp/Sha256.kt

@@ -0,0 +1,3 @@
+package com.chukchukhaksa.mobile.common.kmp
+
+expect fun sha256Hex(input: String): String

composeApp/src/commonMain/kotlin/com/chukchukhaksa/mobile/data/auth/datasource/RemoteAuthDataSource.kt

@@ -0,0 +1,7 @@
+package com.chukchukhaksa.mobile.data.auth.datasource
+
+import com.chukchukhaksa.mobile.domain.auth.model.SignInResult
+
+interface RemoteAuthDataSource {
+    suspend fun signIn(idToken: String, nonce: String): SignInResult
+}

composeApp/src/commonMain/kotlin/com/chukchukhaksa/mobile/data/auth/di/AuthRepositoryModule.kt

@@ -0,0 +1,12 @@
+package com.chukchukhaksa.mobile.data.auth.di
+
+import com.chukchukhaksa.mobile.data.auth.datasource.RemoteAuthDataSource
+import com.chukchukhaksa.mobile.data.auth.repository.AuthRepositoryImpl
+import com.chukchukhaksa.mobile.domain.auth.repository.AuthRepository
+import com.chukchukhaksa.mobile.remote.auth.RemoteAuthDataSourceImpl
+import org.koin.dsl.module
+
+val authRepositoryModule = module {
+    single<RemoteAuthDataSource> { RemoteAuthDataSourceImpl(get()) }
+    single<AuthRepository> { AuthRepositoryImpl(get()) }
+}

composeApp/src/commonMain/kotlin/com/chukchukhaksa/mobile/data/auth/repository/AuthRepositoryImpl.kt

@@ -0,0 +1,14 @@
+package com.chukchukhaksa.mobile.data.auth.repository
+
+import com.chukchukhaksa.mobile.data.auth.datasource.RemoteAuthDataSource
+import com.chukchukhaksa.mobile.domain.auth.model.SignInResult
+import com.chukchukhaksa.mobile.domain.auth.repository.AuthRepository
+
+class AuthRepositoryImpl(
+    private val remoteAuthDataSource: RemoteAuthDataSource,
+) : AuthRepository {
+
+    override suspend fun signIn(idToken: String, nonce: String): SignInResult {
+        return remoteAuthDataSource.signIn(idToken = idToken, nonce = nonce)
+    }
+}

composeApp/src/commonMain/kotlin/com/chukchukhaksa/mobile/di/DomainModules.kt

@@ -45,5 +45,5 @@ val domainModule = module {
 
     // Auth use cases
     factory { AppleLoginUseCase(get()) }
-    factory { KakaoLoginUseCase(get()) }
+    factory { KakaoLoginUseCase(get(), get()) }
 }

composeApp/src/commonMain/kotlin/com/chukchukhaksa/mobile/di/InitKoin.kt

@@ -1,5 +1,6 @@
 package com.chukchukhaksa.mobile.di
 
+import com.chukchukhaksa.mobile.data.auth.di.authRepositoryModule
 import com.chukchukhaksa.mobile.data.config.di.appConfigRepositoryModule
 import com.chukchukhaksa.mobile.data.openlecture.di.openLectureRepositoryModule
 import com.chukchukhaksa.mobile.data.openmajor.di.openMajorRepositoryModule
@@ -13,6 +14,7 @@ import com.chukchukhaksa.mobile.local.datasource.timetable.di.localTimetableData
 import com.chukchukhaksa.mobile.local.datastore.di.dataStoreModule
 import com.chukchukhaksa.mobile.remote.config.remoteAppConfigDataSourceModule
 import com.chukchukhaksa.mobile.remote.di.firebaseDatabaseModule
+import com.chukchukhaksa.mobile.remote.di.httpClientModule
 import com.chukchukhaksa.mobile.remote.timetable.remoteOpenLectureDataSourceModule
 import org.koin.core.context.startKoin
 import org.koin.dsl.KoinAppDeclaration
@@ -36,8 +38,10 @@ fun initKoin(config: KoinAppDeclaration? = null) {
             openLectureRepositoryModule,
             presentationModule,
             firebaseDatabaseModule,
+            httpClientModule,
             remoteAppConfigDataSourceModule,
             appConfigRepositoryModule,
+            authRepositoryModule,
         )
     }
 }

composeApp/src/commonMain/kotlin/com/chukchukhaksa/mobile/domain/auth/model/SignInResult.kt

@@ -0,0 +1,7 @@
+package com.chukchukhaksa.mobile.domain.auth.model
+
+data class SignInResult(
+    val accessToken: String,
+    val refreshToken: String,
+    val isPortalLinked: Boolean,
+)

composeApp/src/commonMain/kotlin/com/chukchukhaksa/mobile/domain/auth/repository/AuthRepository.kt

@@ -0,0 +1,7 @@
+package com.chukchukhaksa.mobile.domain.auth.repository
+
+import com.chukchukhaksa.mobile.domain.auth.model.SignInResult
+
+interface AuthRepository {
+    suspend fun signIn(idToken: String, nonce: String): SignInResult
+}

composeApp/src/commonMain/kotlin/com/chukchukhaksa/mobile/domain/auth/usecase/KakaoLoginUseCase.kt

@@ -1,14 +1,20 @@
 package com.chukchukhaksa.mobile.domain.auth.usecase
 
 import com.chukchukhaksa.mobile.common.kmp.KakaoSignInClient
-import com.chukchukhaksa.mobile.common.kmp.KakaoSignInResult
+import com.chukchukhaksa.mobile.domain.auth.model.SignInResult
+import com.chukchukhaksa.mobile.domain.auth.repository.AuthRepository
 import com.chukchukhaksa.mobile.domain.common.runCatchingIgnoreCancelled
 
 class KakaoLoginUseCase(
     private val kakaoSignInClient: KakaoSignInClient,
+    private val authRepository: AuthRepository,
 ) {
-    suspend operator fun invoke(context: Any? = null): Result<KakaoSignInResult> =
+    suspend operator fun invoke(context: Any? = null): Result<SignInResult> =
         runCatchingIgnoreCancelled {
-            kakaoSignInClient.signIn(context)
+            val kakaoResult = kakaoSignInClient.signIn(context)
+            authRepository.signIn(
+                idToken = kakaoResult.idToken,
+                nonce = kakaoResult.nonce,
+            )
         }
 }

composeApp/src/commonMain/kotlin/com/chukchukhaksa/mobile/remote/auth/RemoteAuthDataSourceImpl.kt

@@ -0,0 +1,31 @@
+package com.chukchukhaksa.mobile.remote.auth
+
+import com.chukchukhaksa.mobile.data.auth.datasource.RemoteAuthDataSource
+import com.chukchukhaksa.mobile.domain.auth.model.SignInResult
+import com.chukchukhaksa.mobile.remote.auth.model.SignInRequest
+import com.chukchukhaksa.mobile.remote.auth.model.SignInResponse
+import com.chukchukhaksa.mobile.remote.common.ApiResponse
+import com.chukchukhaksa.mobile.remote.common.getDataOrThrow
+import io.ktor.client.HttpClient
+import io.ktor.client.call.body
+import io.ktor.client.request.post
+import io.ktor.client.request.setBody
+
+class RemoteAuthDataSourceImpl(
+    private val httpClient: HttpClient,
+) : RemoteAuthDataSource {
+
+    override suspend fun signIn(idToken: String, nonce: String): SignInResult {
+        val response = httpClient.post("users/signin") {
+            setBody(SignInRequest(idToken = idToken, nonce = nonce))
+        }.body<ApiResponse<SignInResponse>>()
+
+        return response.getDataOrThrow().toSignInResult()
+    }
+}
+
+private fun SignInResponse.toSignInResult() = SignInResult(
+    accessToken = accessToken,
+    refreshToken = refreshToken,
+    isPortalLinked = isPortalLinked,
+)

composeApp/src/commonMain/kotlin/com/chukchukhaksa/mobile/remote/auth/model/SignInRequest.kt

@@ -0,0 +1,10 @@
+package com.chukchukhaksa.mobile.remote.auth.model
+
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class SignInRequest(
+    @SerialName("id_token") val idToken: String,
+    val nonce: String,
+)

composeApp/src/commonMain/kotlin/com/chukchukhaksa/mobile/remote/auth/model/SignInResponse.kt

@@ -0,0 +1,10 @@
+package com.chukchukhaksa.mobile.remote.auth.model
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class SignInResponse(
+    val accessToken: String,
+    val refreshToken: String,
+    val isPortalLinked: Boolean,
+)

composeApp/src/commonMain/kotlin/com/chukchukhaksa/mobile/remote/common/ApiException.kt

@@ -0,0 +1,6 @@
+package com.chukchukhaksa.mobile.remote.common
+
+class ApiException(
+    val code: String,
+    override val message: String,
+) : RuntimeException(message)

composeApp/src/commonMain/kotlin/com/chukchukhaksa/mobile/remote/common/ApiResponse.kt

@@ -0,0 +1,23 @@
+package com.chukchukhaksa.mobile.remote.common
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class ApiResponse<T>(
+    val success: Boolean,
+    val data: T? = null,
+    val error: ApiError? = null,
+)
+
+@Serializable
+data class ApiError(
+    val code: String,
+    val message: String,
+)
+
+fun <T> ApiResponse<T>.getDataOrThrow(): T {
+    return data ?: throw ApiException(
+        code = error?.code.orEmpty(),
+        message = error?.message ?: "알 수 없는 에러가 발생했어요.",
+    )
+}

composeApp/src/commonMain/kotlin/com/chukchukhaksa/mobile/remote/di/HttpClientModule.kt

@@ -0,0 +1,71 @@
+package com.chukchukhaksa.mobile.remote.di
+
+import com.chukchukhaksa.mobile.common.kmp.httpClientEngineFactory
+import com.chukchukhaksa.mobile.common.kmp.isDebug
+import io.github.aakira.napier.Napier
+import io.ktor.client.HttpClient
+import io.ktor.client.plugins.contentnegotiation.ContentNegotiation
+import io.ktor.client.plugins.defaultRequest
+import io.ktor.client.plugins.logging.LogLevel
+import io.ktor.client.plugins.logging.Logger
+import io.ktor.client.plugins.logging.Logging
+import io.ktor.client.plugins.observer.ResponseObserver
+import io.ktor.client.statement.bodyAsText
+import io.ktor.http.ContentType
+import io.ktor.http.contentType
+import io.ktor.serialization.kotlinx.json.json
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.JsonElement
+import org.koin.dsl.module
+
+private val prettyJson = Json { prettyPrint = true }
+
+private fun String.prettyPrintJson(): String = try {
+    val element = prettyJson.decodeFromString<JsonElement>(this)
+    prettyJson.encodeToString(JsonElement.serializer(), element)
+} catch (_: Exception) {
+    this
+}
+
+val httpClientModule = module {
+    single {
+        HttpClient(httpClientEngineFactory) {
+            install(ContentNegotiation) {
+                json(
+                    Json {
+                        ignoreUnknownKeys = true
+                        isLenient = true
+                    },
+                )
+            }
+
+            install(Logging) {
+                logger = object : Logger {
+                    override fun log(message: String) {
+                        Napier.d(message, tag = "HttpClient")
+                    }
+                }
+                level = if (isDebug) LogLevel.HEADERS else LogLevel.NONE
+            }
+
+            if (isDebug) {
+                install(ResponseObserver) {
+                    onResponse { response ->
+                        val body = response.bodyAsText()
+                        if (body.isNotBlank()) {
+                            Napier.d(
+                                "RESPONSE BODY:\n${body.prettyPrintJson()}",
+                                tag = "HttpClient",
+                            )
+                        }
+                    }
+                }
+            }
+
+            defaultRequest {
+                url("https://api.cchaksa.com/api/")
+                contentType(ContentType.Application.Json)
+            }
+        }
+    }
+}