/// <summary>
/// Method invites client to enter the desired criterion.
/// Then he writes down selected criterion in field SelectionCriterion
/// of parameter staffSelector.
/// </summary>
/// <param name="staffSelector"></param>
public void SelectCriterion(StaffSelector staffSelector)
{
StringBuilder criterionsChoiceBuilder = new StringBuilder(CriterionChoice);
criterionsChoiceBuilder.AppendLine(Criterion1).AppendLine(Criterion2).AppendLine(Criterion3);
bool isCriterionNotSelected = true;
do
{
Console.WriteLine(criterionsChoiceBuilder);
int choice;
Console.Write(Answer);
if (int.TryParse(Console.ReadLine(), out choice))
{
switch (choice)
{
// Criteria 1/ Maximum productivity within the amount.
case 1:
{
staffSelector.SelectionCriterion = new MaxProductivityCriterion();
isCriterionNotSelected = false;
break;
}
// Criteria 2/ Minimum cost for a fixed productivity.
case 2:
{
staffSelector.SelectionCriterion = new MinAmountCriterion();
isCriterionNotSelected = false;
break;
}
// Criteria 3/ Minimum number of employees is higher than Junior for fixed productivity.
case 3:
{
staffSelector.SelectionCriterion = new MinCountOfElderWorkersCriterion();
isCriterionNotSelected = false;
break;
}
default:
{
Console.WriteLine(ClInputError);
continue;
}
}
}
else
{
Console.WriteLine(ClInputError);
}
} while (isCriterionNotSelected);
}
/// <summary>
/// The method creates an instance of the client's handler class
/// and initializes the employee structure.
/// After then it calls handler class methods of commands
/// entered by client.
/// After each iteration of the loop do-while,
/// user is asked to press a key Escape
/// or continue working with application
/// by pressing any other key.
/// </summary>
/// <param name="args"></param>
static void Main(string[] args)
{
try
{
Console.WriteLine(Welcome);
StaffSelectionConsoleHandler consoleHandler = new StaffSelectionConsoleHandler();
Staffs staffs = new Staffs(
new Junior(JuniorSalary, JuniorProductivity),
new Middle(MiddleSalary, MiddleProductivity),
new Senior(SeniorSalary, SeniorProductivity),
new Lead(LeadSalary, LeadProductivity));
do
{
// called method for input
// current amount and required productivity of the client
StaffSelector currentSelector = consoleHandler.PackingClientPersonalData();
currentSelector.Staffs = staffs;
// called method for choice desired criteria
consoleHandler.SelectCriterion(currentSelector);
// choice of employees according to the entered parameters
List <Dictionary <FellowWorker, int> > result = currentSelector.SelectTeams();
// print results
consoleHandler.PrintTeams(result);
Console.WriteLine(Choice);
} while (Console.ReadKey(true).Key != ConsoleKey.Escape);
}
catch (Exception exc)
{
Console.WriteLine(exc.Message);
}
}
/// <summary> /// Each select method requires an override /// according to its criterion /// </summary> /// <param name="selector">Contains cash amount and productivity</param> /// <returns>Possible solutions for the composition of the team of employees</returns> public abstract List <Dictionary <FellowWorker, int> > Select(StaffSelector selector);