(код без описания)

go · basicsTutu / Тутуне решено

Условие

(код без описания)

// Описание: В этом коде описана логика работы корзины, в которую можно добавлять продукты, убирать их, а также создавать заказ.
// Задача: Нужно провести Code Review и предложить улучшения по данному функционалу.

package cart

import (
  "fmt "
  "net/smtp "
)

var items []Product
var vatRate = 10.0
var removalChannel chan bool
var order Order

type Product struct {
  NameOfProduct  string
  PriceOfProduct float32
}

type Order struct {
  Items []Product
}

func init() {
  items = make([]Product, 100)
  removalChannel = make(chan bool, 1)
}

func AddItemToShoppingCart(item Product) {
  items = append(items, item)
}

func RemoveItemFromShoppingCart(nameOfItem string) {
  go func() {
    for i, item := range items {
      if item.NameOfProduct == nameOfItem {
        items = append(items[:i], items[i+1:]...)
        removalChannel <- true

        return
      }
    }

    removalChannel <- false
  }()

  <-removalChannel
}

func CalculateVAT() float64 {
  subTotal := 0.0
  for _, item := range items {
    price := float64(item.PriceOfProduct)
    subTotal += price
  }

  vatAmount := subTotal * (vatRate / 100)

  return vatAmount
}

func ListAndCalculateVAT() float64 {
  subTotal := 0.0
  for _, item := range items {
    fmt.Printf("Item Name: %s, Item Price: $%.2f\n ", item.NameOfProduct, item.PriceOfProduct)

    subTotal += float64(item.PriceOfProduct)
  }

  vatAmount := CalculateVAT()
  totalWithVAT := subTotal + vatAmount

  fmt.Printf("The total price with VAT: $%.2f\n ", totalWithVAT)

  return totalWithVAT
}

func CreateOrder(customerEmail string) {
  totalPrice := ListAndCalculateVAT()

  orderDetails := "Thank you for your order!\n\n "
  orderDetails += "Here are the items in your order:\n "

  for _, item := range items {
    orderDetails += fmt.Sprintf("- %s: $%.2f\n ", item.NameOfProduct, item.PriceOfProduct)
  }

  orderDetails += fmt.Sprintf("\nTotal (including VAT): $%.2f\n ", totalPrice)

  subject := "Your Order Confirmation "

  err := SendOrderConfirmationEmail(customerEmail, subject, orderDetails)

  order = Order{Items: items}

  if err != nil {
    fmt.Println("Failed to send order confirmation email:", err)
  }
}

func SendOrderConfirmationEmail(to string, subject string, body string) error {
  from := "your-email@example.com "
  password := "your-email-password "
  smtpHost := "smtp.example.com "
  smtpPort := "587 "

  auth := smtp.PlainAuth("", from, password, smtpHost)

  message := []byte("Subject: " + subject + "\r\n " +
    "To: " + to + "\r\n " +
    "From: " + from + "\r\n " +
    "\r\n " + body)

  err := smtp.SendMail(smtpHost+":"+smtpPort, auth, from, []string{to}, message)
  if err != nil {
    return err
  }

  return nil
}

Решение

Разбор

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Источник: Tutu / Туту

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