Created
March 23, 2022 15:54
-
-
Save anibalbastiass/f694326f0471b6ee21b7adc838a1bdfe to your computer and use it in GitHub Desktop.
JSONParserChallenge (Using Gson Library)
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| import CharterChallenge.Order.OrderItem.SizePrice | |
| import com.google.gson.Gson | |
| import com.google.gson.annotations.SerializedName | |
| import java.net.URL | |
| class CharterChallenge { | |
| companion object { | |
| private const val GET_ORDER_URL = "https://raw.githubusercontent.com/pgiani/KotlinTask/main/order.json" | |
| @JvmStatic | |
| fun main(args: Array<String>) { | |
| val response = URL(GET_ORDER_URL).readText() | |
| val parser = JSONOrderParser() | |
| val orders = parser.fromJsonToObject(response) | |
| val nonNullableOrders = checkNotNull(orders?.order) { | |
| throw NullPointerException("Orders cannot be null") | |
| } | |
| var total = 0 | |
| nonNullableOrders.map { item -> | |
| total += item.size.calculate() | |
| } | |
| println("The price of the order is $total €") | |
| } | |
| private fun SizePrice.calculate(): Int { | |
| return when (this) { | |
| SizePrice.SMALL -> SizePrice.SMALL.amount | |
| SizePrice.MEDIUM -> SizePrice.MEDIUM.amount | |
| SizePrice.LARGE -> SizePrice.LARGE.amount | |
| else -> throw IllegalArgumentException("This size is not available") | |
| } | |
| } | |
| } | |
| data class Order( | |
| val order: List<OrderItem> = arrayListOf() | |
| ) { | |
| data class OrderItem( | |
| val type: String = "", | |
| @SerializedName("size") val size: SizePrice = SizePrice.DEFAULT, | |
| val toppings: List<String> = arrayListOf(), | |
| val sauce: List<String> = arrayListOf() | |
| ) { | |
| enum class SizePrice(internal val amount: Int) { | |
| @SerializedName("small") | |
| SMALL(4), | |
| @SerializedName("medium") | |
| MEDIUM(8), | |
| @SerializedName("large") | |
| LARGE(15), | |
| @SerializedName("default") | |
| DEFAULT(0) | |
| } | |
| } | |
| } | |
| class JSONOrderParser { | |
| fun fromJsonToObject(json: String): Order? = Gson().fromJson(json, Order::class.java) | |
| } | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment