feat/#11: ApiFactory 추가

app/src/main/java/com/sopt/now/compose/data/ApiFactory.kt

@@ -0,0 +1,55 @@
+package com.sopt.now.compose.data
+
+import android.util.Log
+import com.jakewharton.retrofit2.converter.kotlinx.serialization.asConverterFactory
+import com.sopt.now.compose.BuildConfig
+import kotlinx.serialization.json.Json
+import okhttp3.Interceptor
+import okhttp3.MediaType.Companion.toMediaType
+import okhttp3.OkHttpClient
+import okhttp3.Response
+import retrofit2.Retrofit
+import java.io.IOException
+
+object ApiFactory {
+    private const val BASE_URL: String = BuildConfig.AUTH_BASE_URL
+    lateinit var userPreference: UserPreference
+
+    fun initializeUserPreference(userPreference: UserPreference) {
+        ApiFactory.userPreference = userPreference
+    }
+
+    val retrofit: Retrofit by lazy {
+        Retrofit.Builder()
+            .baseUrl(BASE_URL)
+            .client(provideOkHttpClient())
+            .addConverterFactory(Json.asConverterFactory("application/json".toMediaType()))
+            .build()
+    }
+
+    private fun provideOkHttpClient(): OkHttpClient = OkHttpClient.Builder()
+        .addInterceptor(HeaderInterceptor())
+        .build()
+
+    class HeaderInterceptor : Interceptor {
+        @Throws(IOException::class)
+        override fun intercept(chain: Interceptor.Chain): Response {
+            if (!ApiFactory::userPreference.isInitialized) {
+                throw IllegalStateException("UserPreference is not initialized")
+            }
+
+            val newRequest = chain.request().newBuilder()
+                .addHeader("memberId", userPreference.getUserId().toString())
+                .build()
+            Log.d("userPreference API", "${userPreference.getUserId().toString()}")
+            return chain.proceed(newRequest)
+        }
+    }
+
+    inline fun <reified T> create(): T = retrofit.create(T::class.java)
+}
+
+object ServicePool {
+    val authService = ApiFactory.create<AuthService>()
+    val userService = ApiFactory.create<UserService>()
+}