/// <summary>
/// Method in which we check whether or not person can be found in database
/// </summary>
/// <param name="strInput"></param>
private void ProcessPerson(string strInput)
{
// By Default, the CAC stores the DoDID as a base 32, that by itself is a unique
// identifier and as such there's no need to convert it back into its base 10 equivalent
DataRow Person = datPeople.NewRow();
Person["DoDID32"] = CalcProcess.GetRawDoDID(strInput);
// Try to find a person on the list with that DoDID number
DataRow PersonMatch = datPeople.Rows.Find(Person["DoDID32"]);
// Person match returns null if it doesn't find a person
if (PersonMatch != null)
{
bool blnBelowLimit = (int)PersonMatch["Count"] < LimitDrinks;
btnAdd.IsEnabled = blnBelowLimit;
txtDrinksInput.IsEnabled = blnBelowLimit;
ToggleIcon(blnBelowLimit);
PersonOfInterest = PersonMatch;
DrinksLeft = LimitDrinks - (int)PersonOfInterest["Count"];
if (blnBelowLimit)
{
txtDrinksInput.Focus();
txtDrinksInput.SelectAll();
ToggleIncrementButtons();
}
else
{
btnCancel.Focus();
}
}
else
{
// Add the new LEGAL person to the list;
Person["Count"] = 0;
datPeople.Rows.Add(Person);
PersonOfInterest = Person;
DataParse.SaveData(DateOfProgram, LimitDrinks, HoursBeforeReset, AgeReq, datPeople);
ToggleIcon(true);
txtDrinksInput.Focus();
txtDrinksInput.SelectAll();
DrinksLeft = LimitDrinks - (int)PersonOfInterest["Count"];
grpStatus.Header = string.Format(ProjStrings.DrinksRemaining, NameOfPerson, DrinksLeft);
ToggleIncrementButtons();
}
}
/// <summary>
/// Occurs when a CAC is scanned. The btnSubmit by default is the form's "Accept Button".
/// After a successful scan, it will set focus,
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void BtnSubmit_Click(object sender, EventArgs e)
{
// We use the groupbox header as the status message, this resets it.
grpStatus.Header = string.Empty;
// Get the input and then clear the input text box
string strInput = txtInput.Password;
txtInput.Clear();
// Clear any fields that are native to that user.
ResetFields();
// If the program is left running randomly overnight w/o closing the program then we
// need to do some work and reset fields
if ((DateTime.Now - DateOfProgram).TotalHours > HoursBeforeReset)
{
DateOfProgram = DateTime.Now;
datPeople.Rows.Clear();
DataParse.SaveData(DateOfProgram, LimitDrinks, HoursBeforeReset, AgeReq, datPeople);
}
txtInput.IsEnabled = false;
btnSubmit.IsEnabled = false;
btnCancel.IsEnabled = true;
// This is in a try/catch block in case the user tries to scan in something other than
// the Front side of the CAC...
try
{
NameOfPerson = string.Format(ProjStrings.Name,
strInput.Substring(15, 1), // First Initial
strInput.Substring(35, 26).Trim()); // Entire Last Name
// Name
grpStatus.Header = NameOfPerson;
DateTime DateOfBirth = DateTime.FromOADate(CalcProcess.ConvertToBase10(strInput.Substring(61, 4), 32) - DblWeirdDOBOffset);
// There's no .TotalYears function, so we have to use .TotalDays.
int intAge = (int)((DateTime.Today - DateOfBirth).TotalDays / 365);
txtAge.Text = string.Format(ProjStrings.Age, intAge);
// If the Age is >= the AgeReq, then enable the add button.
bool personIsLegal = intAge >= AgeReq;
grpStatus.Header = personIsLegal ? "" : string.Format(ProjStrings.Underaged, NameOfPerson);
ToggleIcon(personIsLegal);
btnAdd.IsEnabled = personIsLegal;
txtDrinksInput.IsEnabled = personIsLegal;
// If they are legal, then we proceed to do other checks
if (personIsLegal)
{
ProcessPerson(strInput);
grpStatus.Header = string.Format(ProjStrings.DrinksRemaining, NameOfPerson, DrinksLeft);
}
else
{
btnCancel.Focus();
}
}
catch
{
ResetFields();
grpStatus.Header = ProjStrings.ReadyToScan;
MessageBox.Show(ProjStrings.ErrorReading);
txtInput.Focus();
}
}