A Simple build of Retrofit interface API by Operator function in Kotlin

Main.kt

//Now you can use it this way

 CoroutineScope(Dispatchers.IO).launch {
   val user = User();
   UserInfoAPI().add(user)
    
   UserInfoAPI().edit(user)
   
   UserInfoAPI().delete(10)
}

Simple-Retrofit-Interface-API.kt

interface UserInfoAPI {


    companion object {
        operator fun invoke(): UserInfoAPI {
            return Retrofit.Builder().apply {
                baseUrl("https://endpoint.com")
                addConverterFactory(GsonConverterFactory.create())

            }.build().create(UserInfoAPI::class.java)
        }
    }


    @POST("add/user.json")
    suspend fun add(@Body user: User): Boolean


    @PUT("edit/user.json")
    suspend fun edit(@Body user: User): User


    @DELETE("delete/user.json")
    suspend fun delete(@Body userId: Int): Boolean
}