Single Responsibility Principle `badImpl`

badImplCustomer.go

package main

import "fmt"

type badImplCustomer struct {
	Name          string
	Address       string
	Order         int
	OrderComplete bool
}

func (c *badImplCustomer) addOrder() int {
	orderId := 1
	c.Order = orderId
	return orderId
}

func (c badImplCustomer) calculateBill() int {
	return c.Order * 2
}

func (c *badImplCustomer) deliverOrder() {
	fmt.Printf("Order: %d delivered!\n", c.Order)
	c.OrderComplete = true
}

func main() {
	c := badImplCustomer{
		Name:    "Bob",
		Address: "California",
	}
	c.addOrder()
	c.calculateBill()
	c.deliverOrder()
}