public void AddArticle(string articleName, string articlePrice, string articleQuantity)
{
int i;
var message = new MessageToUser();
for (i = 0; i < maxInventoryRow; i++)
{
// Check if article name already exist and inform user and then interrupt
if (inventoryTable[i, 0] == articleName)
{
message.Write("Article already exist!");
break;
}
if (String.IsNullOrEmpty(inventoryTable[i, 0]))
{
// Next available empty row is found
inventoryTable[i, 0] = articleName;
inventoryTable[i, 1] = articlePrice;
inventoryTable[i, 2] = articleQuantity;
message.Write("Article is now added!");
break;
}
}
return;
}
public void DeleteArticle(string articleName)
{
int i, j, deleteRow;
var message = new MessageToUser();
for (i = 0; i < maxInventoryRow; i++)
{
// End loop if no more articles
if (String.IsNullOrEmpty(inventoryTable[i, 0]))
{
break;
}
if (inventoryTable[i, 0] == articleName)
{
// Article is found and will be deleted
deleteRow = i;
for (j = deleteRow + 1; j < maxInventoryRow; j++)
{
inventoryTable[j - 1, 0] = inventoryTable[j, 0];
inventoryTable[j - 1, 1] = inventoryTable[j, 1];
inventoryTable[j - 1, 2] = inventoryTable[j, 2];
// Interrupt when there are no more articles in the table
if (String.IsNullOrEmpty(inventoryTable[j, 0]))
{
break;
}
}
message.Write("Article is now deleted!");
break;
}
}
return;
}
public void AddUser(string userName, string password)
{
int i;
var message = new MessageToUser();
var bank = new Bank();
for (i = 0; i < maxUserRow; i++)
{
// Check if username already exist and inform user and then interrupt
if (userTable[i, 0] == userName)
{
message.Write("User already exist! Please use another Username!");
break;
}
if (String.IsNullOrEmpty(userTable[i, 0]))
{
// Next available empty row is found
userTable[i, 0] = userName;
userTable[i, 1] = password;
message.Write("User is now added!");
// Also add account with balance zero
bank.AddAccount(userName);
break;
}
}
return;
}
public void PrintArticles()
{
int i;
var message = new MessageToUser();
for (i = 0; i < maxInventoryRow; i++)
{
// End loop if no more articles
if (String.IsNullOrEmpty(inventoryTable[i, 0]))
{
// If there was something to print, then wait for user input before break
if (i > 0)
{
message.Write("End of list!");
}
break;
}
// Print the article info
if (i == 0)
{
// Write header before printing first article
Console.WriteLine("{0,-30} {1,-10} {2,-10}\n", "Article", "Price", "Quantity");
}
Console.WriteLine("{0,-30} {1,-10} {2,-10}", inventoryTable[i, 0], inventoryTable[i, 1], inventoryTable[i, 2]);
}
return;
}
public void AddAccount(string userName)
{
int i;
var message = new MessageToUser();
for (i = 0; i < maxBankRow; i++)
{
// Check if username already exist and interrupt in such case
if (bankTable[i, 0] == userName)
{
message.Write("No account created! The user has already an account!");
break;
}
// If user not exist, then add user and the amount in the end of the table
if (String.IsNullOrEmpty(bankTable[i, 0]))
{
// Next available empty row is found
bankTable[i, 0] = userName;
bankTable[i, 1] = "0";
message.Write("New account is now added!\n");
break;
}
}
return;
}
public int AddAmount(string userName, int amount)
{
int i, balance;
bool userExist = false;
var message = new MessageToUser();
for (i = 0; i < maxBankRow; i++)
{
// Check if username exist and then add amount to existing balance
if (bankTable[i, 0] == userName)
{
balance = int.Parse(bankTable[i, 1]);
// If balance will be negative , no withdrawel is possible
if ((balance + amount) <= 0)
{
message.Write("There is not enough balance on your account! Balance = " + bankTable[i, 1] + "\n");
return(0);
}
balance += amount;
bankTable[i, 1] = balance.ToString();
message.Write("New balance of the account is: " + bankTable[i, 1] + "\n");
userExist = true;
break;
}
}
// If user is not found, then notify user
if (userExist == false)
{
message.Write("No account exist with that Username!\n");
amount = 0;
}
return(Math.Abs(amount));
}
public void PrintAccounts()
{
int i;
var message = new MessageToUser();
for (i = 0; i < maxBankRow; i++)
{
// End loop if no more articles
if (String.IsNullOrEmpty(bankTable[i, 0]))
{
// If there was something to print, then wait for user input before break
if (i > 0)
{
message.Write("End of list!");
}
break;
}
// Print the account info
if (i == 0)
{
// Write header before printing first account
Console.WriteLine("{0,-30} {1,-10}\n", "User", "Balance");
}
Console.WriteLine("{0,-30} {1,-10}", bankTable[i, 0], bankTable[i, 1]);
}
return;
}
public bool ValidateUser(string userName, string password)
{
int i;
var message = new MessageToUser();
for (i = 0; i < maxUserRow; i++)
{
// End loop if no more users
if (String.IsNullOrEmpty(userTable[i, 0]))
{
message.Write("User not found!");
return(false);
}
if (userTable[i, 0] == userName)
{
// User is found, check if password is OK
if (userTable[i, 1] == password)
{
message.Write("Your are now logged in!");
return(true);
}
else
{
message.Write("Password not correct!");
return(false);
}
}
}
return(false);
}
public void DeleteUser(string userName)
{
int i, j, deleteRow;
var message = new MessageToUser();
for (i = 0; i < maxUserRow; i++)
{
// End loop if now more users
if (String.IsNullOrEmpty(userTable[i, 0]))
{
break;
}
if (userTable[i, 0] == userName)
{
// User is found and will be deleted
deleteRow = i;
for (j = deleteRow + 1; j < maxUserRow; j++)
{
userTable[j - 1, 0] = userTable[j, 0];
userTable[j - 1, 1] = userTable[j, 1];
// Interrupt when there are no more users in the table
if (String.IsNullOrEmpty(userTable[j, 0]))
{
break;
}
}
message.Write("User is now deleted!");
break;
}
}
return;
}
public void PrintShopCart()
{
int i;
var message = new MessageToUser();
for (i = 0; i < maxShopRow; i++)
{
// End loop if no more articles
if (String.IsNullOrEmpty(shopCart[i, 0]))
{
// If there was something to print, then wait for user input before break
if (i > 0)
{
message.Write("End of list!");
}
// If there are no items in shopCart, inform user
else if (i == 0)
{
message.Write("There are no items in your shopping cart!");
}
break;
}
// Print the shopcart info
if (i == 0)
{
// Write header before printing first shopcart line
Console.WriteLine("{0,-30} {1,-15} {2,-10}\n", "Article name", "No of items", "Total price");
}
Console.WriteLine("{0,-30} {1,-15} {2,-10}", shopCart[i, 1], shopCart[i, 2], shopCart[i, 3]);
}
return;
}
public void PrintUsers()
{
int i;
var message = new MessageToUser();
for (i = 0; i < maxUserRow; i++)
{
// End loop if no more users
if (String.IsNullOrEmpty(userTable[i, 0]))
{
// If there was something to print, then wait for user input before break
if (i > 0)
{
message.Write("End of list!");
}
break;
}
// Print the user info
if (i == 0)
{
// Write header before printing first user
Console.WriteLine("{0,-20} {1,-20}\n", "Username", "Password");
}
Console.WriteLine("{0,-20} {1,-20}", userTable[i, 0], userTable[i, 1]);
}
return;
}
private static void InventoryHandling(string currentUserName)
{
var choice = "";
var inventory = new Inventory();
var message = new MessageToUser();
string articleName, articlePrice, articleQuantity;
while (choice == "")
{
ClearConsole();
Console.WriteLine("Inventory handling menu ({0})\n", currentUserName);
Console.WriteLine("A - Add an article");
Console.WriteLine("B - Delete an article");
Console.WriteLine("C - Print all articles");
Console.WriteLine("D - Back to Main menu");
Console.WriteLine("\nWhat do you want to do?");
Console.Write("Select A, B, C or D: ");
choice = Console.ReadLine();
choice = choice.ToUpper();
switch (choice)
{
case "A":
// Ask for name, price and quantity of an article to be added
Console.Write("Type name of article: ? ");
articleName = Console.ReadLine();
Console.Write("Type price of article: ? ");
articlePrice = Console.ReadLine();
Console.Write("Type quantity of article: ? ");
articleQuantity = Console.ReadLine();
// Add user to table
inventory.AddArticle(articleName, articlePrice, articleQuantity);
break;
case "B":
// Ask for article to delete
Console.Write("Type name of article you want to delete: ? ");
articleName = Console.ReadLine();
// Delete user from table
inventory.DeleteArticle(articleName);
break;
case "C":
inventory.PrintArticles();
break;
case "D":
// Back to main menu
return;
default:
message.Write("Wrong option selected - Please try again!");
break;
}
choice = "";
}
}
private static void UserHandling(string currentUserName)
{
var choice = "";
var user = new User();
var message = new MessageToUser();
string userName, password;
while (choice == "")
{
ClearConsole();
Console.WriteLine("User handling menu ({0})\n", currentUserName);
Console.WriteLine("A - Add a user");
Console.WriteLine("B - Delete a user");
Console.WriteLine("C - Print all users");
Console.WriteLine("D - Back to Main menu");
Console.WriteLine("\nWhat do you want to do?");
Console.Write("Select A, B, C or D: ");
choice = Console.ReadLine();
choice = choice.ToUpper();
switch (choice)
{
case "A":
// Ask for username and password to add
Console.Write("Type Username you want to add: ? ");
userName = Console.ReadLine();
Console.Write("Type Password: ? ");
password = Console.ReadLine();
// Add user to table
user.AddUser(userName, password);
break;
case "B":
// Ask for username to delete
Console.Write("Type the Username you want to delete: ? ");
userName = Console.ReadLine();
// Delete user from table
user.DeleteUser(userName);
break;
case "C":
user.PrintUsers();
break;
case "D":
// Back to main menu
return;
default:
message.Write("Wrong option selected - Please try again!");
break;
}
choice = "";
}
}
public bool ArticleExist(string articleName)
{
int i;
var message = new MessageToUser();
for (i = 0; i < maxInventoryRow; i++)
{
// Check if article exist
if (inventoryTable[i, 0] == articleName)
{
return(true);
}
}
// Article does not exist and then return false
return(false);
}
public int QuantityInStock(string articleName)
{
int i;
var message = new MessageToUser();
for (i = 0; i < maxInventoryRow; i++)
{
// Check if article exist and if there is enough items in stock
if (inventoryTable[i, 0] == articleName)
{
return(int.Parse(inventoryTable[i, 2]));
}
}
// Article does not exist; Notify user and return 0
message.Write("Article does not exist!");
return(0);
}
public bool ChangeQuantity(string articleName, int noItems)
{
int i, currentQuantity, newQuantity;
var message = new MessageToUser();
for (i = 0; i < maxInventoryRow; i++)
{
// Check if article exist and adjust quantity if found
if (inventoryTable[i, 0] == articleName)
{
currentQuantity = int.Parse(inventoryTable[i, 2]);
newQuantity = currentQuantity + noItems;
inventoryTable[i, 2] = newQuantity.ToString();
return(true);
}
}
return(false);
}
public void DeleteAccount(string userName)
{
int i, j, balance, deleteRow;
var message = new MessageToUser();
for (i = 0; i < maxBankRow; i++)
{
// End loop if now more accounts
if (String.IsNullOrEmpty(bankTable[i, 0]))
{
break;
}
if (bankTable[i, 0] == userName)
{
// Account is found and will be deleted if balance is zero
balance = int.Parse(bankTable[i, 1]);
if (balance != 0)
{
// Balance is not zero and account will not be deleted
message.Write("Account not deleted since balance is not zero!");
break;
}
//
deleteRow = i;
for (j = deleteRow + 1; j < maxBankRow; j++)
{
bankTable[j - 1, 0] = bankTable[j, 0];
bankTable[j - 1, 1] = bankTable[j, 1];
// Interrupt when there are no more accounts in the table
if (String.IsNullOrEmpty(bankTable[j, 0]))
{
break;
}
}
message.Write("Account is now deleted!");
break;
}
}
return;
}
private static void BankHandling(string currentUserName)
{
var choice = "";
var bank = new Bank();
var user = new User();
var message = new MessageToUser();
string addUserName, amount;
while (choice == "")
{
ClearConsole();
Console.WriteLine("Bank handling menu ({0})\n", currentUserName);
Console.WriteLine("A - Add an account");
Console.WriteLine("B - Add money to account");
Console.WriteLine("C - Withdraw money from account");
Console.WriteLine("D - Print all user accounts");
Console.WriteLine("E - Back to Main menu");
Console.WriteLine("\nWhat do you want to do?");
Console.Write("Select A, B, C, D or E: ");
choice = Console.ReadLine();
choice = choice.ToUpper();
switch (choice)
{
case "A":
// Ask for username
Console.Write("Type Username to add account for: ? ");
addUserName = Console.ReadLine();
// Add an account for this user
bank.AddAccount(addUserName);
break;
case "B":
Console.WriteLine("Type the amount to add: ?");
amount = Console.ReadLine();
// If nothing was entered the inform user else add amount
if (String.IsNullOrEmpty(amount))
{
message.Write("No amount was entered!");
}
else
{
// Add the amount to the account for this user
bank.AddAmount(currentUserName, int.Parse(amount));
}
break;
case "C":
Console.Write("Type the amount you want to withdraw: ? ");
amount = Console.ReadLine();
// If nothing was entered the inform user else withdraw amount
if (String.IsNullOrEmpty(amount))
{
message.Write("No amount was entered!");
}
else
{
// Withdraw the amount from the account for this user
// And set the shopAmount that the user can shop for
shopAmount = bank.AddAmount(currentUserName, -(int.Parse(amount)));
}
break;
case "D":
bank.PrintAccounts();
break;
case "E":
// Back to main menu
return;
default:
message.Write("Wrong option selected - Please try again!");
break;
}
choice = "";
}
}
static void Main(string[] args)
{
var choice = "";
string userName = "", password = "";
var message = new MessageToUser();
var inventory = new Inventory();
var user = new User();
var bank = new Bank();
// Create list of a) Users and b) Articles and c) Bank accounts for users
user.CreateUsers();
inventory.CreateArticles();
bank.CreateAccounts();
//Login
LoginUser(ref userName, ref password);
// Write main menu and wait for input
while (choice == "")
{
ClearConsole();
Console.WriteLine("Welcome to Rikard's Vending Machine ({0})\n", userName);
Console.WriteLine("Main menu\n");
Console.WriteLine("A - Shop");
Console.WriteLine("B - Bank");
Console.WriteLine("C - Inventory");
Console.WriteLine("D - User handling");
Console.WriteLine("E - Change user");
Console.WriteLine("F - Exit");
Console.WriteLine("\nWhat do you want to do?");
Console.Write("Select A, B, C, D or E: ");
choice = Console.ReadLine();
choice = choice.ToUpper();
switch (choice)
{
case "A":
Shopping(userName);
break;
case "B":
BankHandling(userName);
break;
case "C":
if (user.IsUserAdmin(userName) == true)
{
InventoryHandling(userName);
}
else
{
message.Write("You do not have access to this function.");
}
break;
case "D":
if (user.IsUserAdmin(userName) == true)
{
UserHandling(userName);
}
else
{
message.Write("You do not have access to this function.");
}
break;
case "E":
LoginUser(ref userName, ref password);
break;
case "F":
ClearConsole();
message.Write("Thanks for shopping at Rikard's Vending Machine!\nSee you soon and Welcome back!");
Environment.Exit(0);
break;
default:
message.Write("Wrong option selected - Please try again!");
break;
}
choice = "";
}
}
private static void Shopping(string currentUserName)
{
var choice = "";
string articleName, inputNoItems;
int noItems, buyAmount;
var shop = new Shop();
var inventory = new Inventory();
var message = new MessageToUser();
while (choice == "")
{
ClearConsole();
Console.WriteLine("Shopping menu ({0})\n", currentUserName);
Console.WriteLine("A - Show list of articles I can buy");
Console.WriteLine("B - Buy article");
Console.WriteLine("C - Show my Shopping cart");
Console.WriteLine("D - Back to Main menu");
Console.WriteLine("\nWhat do you want to do?");
Console.Write("Select A, B, C or D: ");
choice = Console.ReadLine();
choice = choice.ToUpper();
switch (choice)
{
case "A":
inventory.PrintArticles();
break;
case "B":
Console.Write("What article do you want to buy: ?");
articleName = Console.ReadLine();
// Check first if article exist
if (inventory.ArticleExist(articleName) == false)
{
message.Write("There is no article with that name!");
break;
}
Console.Write("How many items do you want to buy: ?");
inputNoItems = Console.ReadLine();
// If nothing was entered in noItems, inform user
if (String.IsNullOrEmpty(inputNoItems))
{
message.Write("No value was entered!");
}
// If no money, inform user
else if (shopAmount == 0)
{
message.Write("You have no money! Please withdraw from bank!");
}
else
{
// Try to execute the shopping request
noItems = int.Parse(inputNoItems);
buyAmount = shop.BuyArticle(currentUserName, articleName, noItems, shopAmount);
// If shopping is successful then reduce shopAmount with the "buy amount"
if (buyAmount != 0)
{
shopAmount = shopAmount - buyAmount;
}
}
break;
case "C":
shop.PrintShopCart();
message.Write("Available amount for shopping = " + shopAmount);
break;
case "D":
// Back to main menu
return;
default:
message.Write("Wrong option selected - Please try again!");
break;
}
choice = "";
}
}
// BuyArticle performs a buy if conditions are OK
// The functions returns the "buy amount" if OK, otherwise returns 0;
public int BuyArticle(string userName, string articleName, int noItems, int shopAmount)
{
int i, currentStock, articlePrice, currentNoItems, currentTotalPrice, newNoItems, newTotalPrice;
bool buyOK = false;
var message = new MessageToUser();
var inventory = new Inventory();
// Check first if article exist
if (inventory.ArticleExist(articleName) == false)
{
message.Write("There is no article with that name!");
return(0);
}
// Check if no of articles are available in inventory (stock); If not - notify user and return
currentStock = inventory.QuantityInStock(articleName);
if (currentStock <= noItems)
{
message.Write("There are not enough articles in Stock!");
return(0);
}
// Check if user has enough money to buy; If not - notify user and return
articlePrice = inventory.ArticlePrice(articleName);
if (shopAmount < articlePrice * noItems)
{
message.Write("You have not enough money to buy this quantity!");
return(0);
}
// Add article to shopCart
for (i = 0; i < maxShopRow; i++)
{
// Check if article already exist and then add total quantity and price
if (shopCart[i, 0] == userName && shopCart[i, 1] == articleName)
{
currentNoItems = int.Parse(shopCart[i, 2]);
currentTotalPrice = int.Parse(shopCart[i, 3]);
newNoItems = currentNoItems + noItems;
newTotalPrice = currentTotalPrice + noItems * articlePrice;
shopCart[i, 2] = newNoItems.ToString();
shopCart[i, 3] = newTotalPrice.ToString();
buyOK = true;
break;
}
if (String.IsNullOrEmpty(shopCart[i, 0]))
{
// Next available empty row is found
shopCart[i, 0] = userName;
shopCart[i, 1] = articleName;
shopCart[i, 2] = noItems.ToString();
newTotalPrice = noItems * articlePrice;
shopCart[i, 3] = newTotalPrice.ToString();
buyOK = true;
break;
}
}
// Reduce quantity in inventory if successful buy
if (buyOK == true)
{
inventory.ChangeQuantity(articleName, -noItems);
}
return(noItems * articlePrice);
}