using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace EmployeeManagement
{
    class Employee
    {
        // Static variables.
        private static double minimumSalary = 70000;
        private static int numEmployees = 0;

        // Static methods/properties.
        public static void AdjustMinimumSalary(double amount)
        {
            minimumSalary += amount;
            Console.WriteLine("  Message from AdjustMinimumSalary: minimum salary is now {0}.", minimumSalary);
        }

        private PerformanceLevel performanceLevel = new PerformanceLevel();

        public void ScoreEmployee(int score)
        {
            performanceLevel += score;
        }

        public TelephoneNumber TelephoneNumber { get; set; }

        // Instance variables.
        private DateTime joined;
        private string[] skills;
        private UserProfile profile;

        // Constructor 1. 
        // Name only, rely on defaults for everything else.
        public Employee(string name) 
            : this(name, 
                   DateTime.Today,
                   new UserProfile(name.Replace(" ", ""), "password", "GeneralUser@CompanyDomain.com"))
        {}

        // Constructor 2. 
        // Name, date joined, and profile. Plus salary and/or numskills.
        public Employee(string name, DateTime joined, UserProfile profile, double salary = 20000, int totalSkills = 10)
        {
            // Initialize this employee.
            this.Name = name;
            this.Salary = salary;
            this.joined = joined;
            this.skills = new string[totalSkills];
            this.profile = profile;

            // Increment the (static) number of employees.
            numEmployees++;
            Console.WriteLine("  Message from Employee constructor: there are now {0} employee(s).", numEmployees);
        }

        // Destructor.
        ~Employee()
        {
            // Decrement the (static) number of employees.
            numEmployees--;
            Console.WriteLine("  Message from Employee destructor: there are now {0} employee(s).", numEmployees);
        }
        
        // Properties.
        public string Name   { get; private set; }
        public double Salary { get; private set; }

        // Additional methods.
        public void PayRaise(double amount)
        {
            Salary += amount;
        }

        public override string ToString()
        {
            return string.Format("{0} joined {1}, salary {2:c}, performance level: {3}\n{4}.", Name, joined.ToShortDateString(), Salary, performanceLevel, profile);
        }

    }
}