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src/main/kotlin/com/petqua/application/order/OrderProductsValidator.kt
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| package com.petqua.application.order | ||
|
|
||
| import com.petqua.application.order.dto.OrderProductCommand | ||
| import com.petqua.common.domain.Money | ||
| import com.petqua.common.util.throwExceptionWhen | ||
| import com.petqua.domain.order.DeliveryGroupKey | ||
| import com.petqua.domain.product.Product | ||
| import com.petqua.domain.product.option.ProductOption | ||
| import com.petqua.exception.order.OrderException | ||
| import com.petqua.exception.order.OrderExceptionType | ||
| import com.petqua.exception.product.ProductException | ||
| import com.petqua.exception.product.ProductExceptionType | ||
|
|
||
| class OrderProductsValidator( | ||
| val productById: Map<Long, Product>, | ||
| val productOptions: Set<ProductOption>, | ||
| val products: List<Product>, | ||
| ) { | ||
|
|
||
| constructor(productById: Map<Long, Product>, productOptions: Set<ProductOption>) : this( | ||
| productById, | ||
| productOptions, | ||
| productById.values.toList() | ||
| ) | ||
|
|
||
| fun validateProductsIsExist(orderProductCommands: List<OrderProductCommand>) { | ||
| val productIds = orderProductCommands.map { it.productId } | ||
| throwExceptionWhen(products.size != productIds.size) { OrderException(OrderExceptionType.PRODUCT_NOT_FOUND) } | ||
| } | ||
|
|
||
| fun validateProductOptionsIsExist(orderProductCommands: List<OrderProductCommand>) { | ||
| orderProductCommands.forEach { orderProductCommand -> | ||
| productOptions.find { it.productId == orderProductCommand.productId }?.let { | ||
| throwExceptionWhen(!it.isSame(orderProductCommand.toProductOption())) { | ||
| ProductException(ProductExceptionType.INVALID_PRODUCT_OPTION) | ||
| } | ||
| } ?: throw ProductException(ProductExceptionType.INVALID_PRODUCT_OPTION) | ||
| } | ||
| } | ||
|
|
||
| fun validateOrderProductPrices(orderProductCommands: List<OrderProductCommand>) { | ||
| orderProductCommands.forEach { orderProductCommand -> | ||
| val product = productById[orderProductCommand.productId] | ||
| ?: throw OrderException(OrderExceptionType.PRODUCT_NOT_FOUND) | ||
| val productOption = productOptions.findOptionBy(orderProductCommand.productId) | ||
| validateOrderProductPrice(product, productOption, orderProductCommand) | ||
| } | ||
| } | ||
|
|
||
| fun validateTotalAmount(inputTotalAmount: Money, orderProductCommands: List<OrderProductCommand>) { | ||
| val totalDeliveryFee = calculateTotalDeliveryFee(orderProductCommands) | ||
| throwExceptionWhen(inputTotalAmount != Money.from(totalDeliveryFee.toBigDecimal() + orderProductCommands.sumOf { it.orderPrice.value })) { | ||
| OrderException( | ||
| OrderExceptionType.ORDER_PRICE_NOT_MATCH | ||
| ) | ||
| } | ||
| } | ||
|
|
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| private fun validateOrderProductPrice(product: Product, option: ProductOption, command: OrderProductCommand) { | ||
| val expectedOrderPrice = (product.discountPrice + option.additionalPrice) * command.quantity.toBigDecimal() | ||
| val expectedDeliveryFee = product.getDeliveryFee(command.deliveryMethod) | ||
| if (command.orderPrice != expectedOrderPrice || command.deliveryFee != expectedDeliveryFee) { | ||
| throw OrderException(OrderExceptionType.ORDER_PRICE_NOT_MATCH) | ||
| } | ||
| } | ||
|
|
||
| private fun calculateTotalDeliveryFee(orderProductCommands: List<OrderProductCommand>): Int { | ||
| return products.groupBy { getDeliveryGroupKey(it, orderProductCommands) } | ||
| .map { getDeliveryGroupFee(it) } | ||
| .sum() | ||
| } | ||
|
|
||
| private fun getDeliveryGroupKey( | ||
| product: Product, | ||
| orderProductCommands: List<OrderProductCommand> | ||
| ): DeliveryGroupKey { | ||
| val deliveryMethod = orderProductCommands.find { it.productId == product.id }?.deliveryMethod | ||
| ?: throw OrderException(OrderExceptionType.PRODUCT_NOT_FOUND) | ||
| return DeliveryGroupKey(product.storeId, deliveryMethod) | ||
| } | ||
|
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| private fun getDeliveryGroupFee(it: Map.Entry<DeliveryGroupKey, List<Product>>) = | ||
| it.value.first().getDeliveryFee(it.key.deliveryMethod).value.toInt() | ||
|
|
||
| private fun Set<ProductOption>.findOptionBy(productId: Long): ProductOption { | ||
| return find { it.productId == productId } | ||
| ?: throw ProductException(ProductExceptionType.INVALID_PRODUCT_OPTION) | ||
| } | ||
| } |
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