feat: #10 AuthService 구현

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

@@ -0,0 +1,23 @@
+package com.sopt.now.compose.data
+
+import com.jakewharton.retrofit2.converter.kotlinx.serialization.asConverterFactory
+import com.sopt.now.compose.BuildConfig.AUTH_BASE_URL
+import com.sopt.now.compose.BuildConfig.USER_API_URL
+import kotlinx.serialization.json.Json
+import okhttp3.MediaType.Companion.toMediaType
+import retrofit2.Retrofit
+
+object ApiFactory {
+    fun retrofit(url: String): Retrofit =
+        Retrofit.Builder()
+            .baseUrl(url)
+            .addConverterFactory(Json.asConverterFactory("application/json".toMediaType()))
+            .build()
+
+    inline fun <reified T, B> create(url: B): T = retrofit(url.toString()).create(T::class.java)
+}
+
+object ServicePool {
+    val authService = ApiFactory.create<AuthService, String>(AUTH_BASE_URL)
+    val userService = ApiFactory.create<AuthService, String>(USER_API_URL)
+}

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

@@ -0,0 +1,14 @@
+package com.sopt.now.compose.data
+
+import com.sopt.now.compose.data.DTO.request.RequestSignupDto
+import com.sopt.now.compose.data.DTO.response.ResponseSignupDto
+import retrofit2.Call
+import retrofit2.http.Body
+import retrofit2.http.POST
+
+interface AuthService {
+    @POST("member/join")
+    fun signup(
+        @Body request: RequestSignupDto,
+    ): Call<ResponseSignupDto>
+}