[feat/#15] 결제하기 서버통신을 위한 Service 인터페이스와 Dto를 정의합니다.

app/src/main/java/com/sopt/korailtalk/data/remote/model/request/TicketBuyingRequestDto.kt

@@ -0,0 +1,11 @@
+package com.sopt.korailtalk.data.remote.model.request
+
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class TicketBuyingRequestDto(
+    @SerialName("ticketId") val ticketId: Long,
+    @SerialName("totalPrice") val totalPrice: Int,
+    @SerialName("usedPoint") val usedPoint: Int
+)

app/src/main/java/com/sopt/korailtalk/data/remote/model/response/LPointResponseDto.kt

@@ -0,0 +1,10 @@
+package com.sopt.korailtalk.data.remote.model.response
+
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class LPointResponseDto(
+    @SerialName("isValid") val isValid: Boolean,
+    @SerialName("point") val point: Int
+)

app/src/main/java/com/sopt/korailtalk/data/remote/service/PaymentService.kt

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+package com.sopt.korailtalk.data.remote.service
+
+import com.sopt.korailtalk.data.remote.model.base.ApiResponse
+import com.sopt.korailtalk.data.remote.model.request.TicketBuyingRequestDto
+import com.sopt.korailtalk.data.remote.model.response.LPointResponseDto
+import retrofit2.http.Body
+import retrofit2.http.GET
+import retrofit2.http.Header
+import retrofit2.http.PATCH
+import retrofit2.http.Query
+
+interface PaymentService {
+    @GET("/users/points")
+    suspend fun getLpoint(
+        @Header("userId") userId: Long,
+        @Query("pointPassword") pointPassword: Int
+    ): ApiResponse<LPointResponseDto>
+
+    @PATCH("/tickets")
+    suspend fun buyTicket(
+        @Body ticketBuyingRequestDto: TicketBuyingRequestDto
+    ): ApiResponse<Unit>
+}