/* *
* Send a GET request to the server to get the ATM state.
* */
private async Task <ATM> GetATMBills()
{
ATM atm = null;
using (HttpResponseMessage response = await client.GetAsync($"api/atm"))
{
if (response.IsSuccessStatusCode)
{
// get data as a JSON string
string data = await response.Content.ReadAsStringAsync();
// deserialize response to User class
atm = JsonConvert.DeserializeObject <ATM>(data);
}
}
return(atm);
}
/* *
* Send a POST request to update the ATM state.
* */
private async Task UpdateATM(ATM atm)
{
// create a JSON representing the ATM.
string userRequest = "{\"Pennies\":\"" + atm.Pennies + "\","
+ "\"Nickels\":\"" + atm.Nickels + "\","
+ "\"Dimes\":\"" + atm.Dimes + "\","
+ "\"Quarters\":\"" + atm.Quarters + "\","
+ "\"Ones\":\"" + atm.Ones + "\","
+ "\"Fives\":\"" + atm.Fives + "\","
+ "\"Tens\":\"" + atm.Tens + "\","
+ "\"Twenties\":\"" + atm.Twenties + "\","
+ "\"Fifties\":\"" + atm.Fifties + "\"}";
// convert the JSON string to httpContent so we can send it using HttpResponseMessage
var httpContent = new StringContent(userRequest, Encoding.UTF8, "application/json");
using (HttpResponseMessage response = await client.PostAsync($"api/atm", httpContent)) {
// nothing
}
}
/* *
* Update the ATM balance label to reflect the state of the given ATM.
* */
private void setLblATMBalance(ATM atm)
{
lblATMBalance.Text = "ATM Balance: " + "$0.01 - " + atm.Pennies + " | $0.05 - " + atm.Nickels + " | 0.10 - " + atm.Dimes + " | 0.25 - " + atm.Quarters
+ " | $1 - " + atm.Ones + " | $5 - " + atm.Fives + " | $10 - " + atm.Tens + " | $20 - " + atm.Twenties + " | $50 - " + atm.Fifties;
}
/* *
* Called when the user clicks the "deposit" button from the deposit form.
* Initiates the deposit process.
* */
protected void Deposit_Click(object sender, EventArgs e)
{
clearAlerts();
Button btn = (Button)sender;
string id = btn.ID;
ATM atm = (ATM)Session["atm"];
decimal depositAmt = 0;
// update the amount of bills the ATM contains
switch (id)
{
case "btn_01":
depositAmt = 0.01M;
atm.Pennies++;
break;
case "btn_05":
depositAmt = 0.05M;
atm.Nickels++;
break;
case "btn_010":
depositAmt = 0.10M;
atm.Dimes++;
break;
case "btn_025":
depositAmt = 0.25M;
atm.Quarters++;
break;
case "btn_1":
depositAmt = 1;
atm.Ones++;
break;
case "btn_5":
depositAmt = 5;
atm.Fives++;
break;
case "btn_10":
depositAmt = 10;
atm.Tens++;
break;
case "btn_20":
depositAmt = 20;
atm.Twenties++;
break;
case "btn_50":
depositAmt = 50;
atm.Fifties++;
break;
default:
break;
}
if (depositAmt > 0)
{
// update the user to their new balance amount
((User)Session["loggedInUser"]).Balance += depositAmt;
// POST the updated user balance to the server
UpdateUser((User)Session["loggedInUser"]).GetAwaiter();
// POST the udpated ATM balance to the server
UpdateATM((ATM)Session["atm"]).GetAwaiter();
// display success message
formDepositSuccess.Visible = true;
}
}