package solution.exceptionsassertions;

import java.util.Collection;

public class UsingCompany {

	public static void main(String[] args) {
		
		// Create a company, no employees initially.
		Company theCompany = new Company("Acme Inc."); 
		
		// Miscellaneous helper variables.
		String id;
		double amount;
		Employee emp;
		Collection<Employee> emps;
		
		// Display menu options in a loop.
		int option = -1;
		do {
			
			try {
				System.out.println();
				System.out.println("---------------------------------------------------------");
				System.out.println("1. Hire employee");
				System.out.println("2. Fire employee");
				System.out.println("3. Retire employee");
				System.out.println("4. Give employee a pay rise");
				System.out.println("5. Get an employee");
				System.out.println("6. Get all employees");
				System.out.println("7. Get working employees");
				System.out.println("8. Get retired employees");
				System.out.println("9. Quit");
				
				option = Helper.getInt("\nEnter option => ");
				
				switch (option) {
				
					case 1:
						emp = Employee.createEmployee();
						theCompany.hireEmployee(emp);
						System.out.printf("Hired %s.\n", emp);
						break;
						
					case 2:
						id  = Helper.getString("Enter id: ");
						theCompany.fireEmployee(id);
						System.out.printf("Fired employee with id %s.\n", id);
						break;
						
					case 3:
						id  = Helper.getString("Enter id: ");
						theCompany.retireEmployee(id);
						System.out.printf("Retired employee with id %s.\n", id);
						break;

					case 4:
						id  = Helper.getString("Enter id: ");
						amount = Helper.getDouble("Enter amount: ");
						theCompany.giveEmployeePayRise(id, amount);
						System.out.printf("Given %.2f pay rise to employee with id %s.\n", amount, id);
						break;

					case 5:
						id  = Helper.getString("Enter id: ");
						emp = theCompany.getEmployee(id);
						if (emp != null) {
							System.out.printf("Employee details: %s.\n", emp);
						} else {
							System.out.printf("No employee with id %s.\n", id);
						}
						break;

					case 6:
						emps = theCompany.getAllEmployees();
						System.out.println("All employees");
						Helper.displayCollection(emps);
						break;

					case 7:
						emps = theCompany.getWorkingEmployees();
						System.out.println("Working employees");
						Helper.displayCollection(emps);
						break;

					case 8:
						emps = theCompany.getRetiredEmployees();
						System.out.println("Retired employees");
						Helper.displayCollection(emps);
						break;

					case 9:
						// This is a valid option, but there's nothing to do here.
						break;
						
					default:
						System.out.println("Invalid option selected.");
				}

			} catch (CompanyException ex) {
				System.out.printf("Company exception: %s [id %s].\n", ex.getMessage(), ex.getId());
				if (ex.getCause() != null) {
					System.out.printf("  Cause: %s.\n", ex.getCause());
				}
			}
					
		} while (option != 9);
	}
}