using System;

namespace su.divan2000.SalaryApp.Models
{
    public class SalaryData
    {
        // Входные данные
        public double SalaryBase { get; private set; }
        public int DaysWorked { get; private set; }
        public int NightShifts { get; private set; }
        public int OvertimeHours { get; private set; }
        public int ExperienceYears { get; private set; }
        public bool HasViolations { get; private set; }

        // Результаты расчёта
        public double Bonus { get; private set; }
        public double Penalty { get; private set; }
        public double Tax { get; private set; }
        public double TotalSalary { get; private set; }
        public DateTime CalculationDate { get; private set; }

        // Константы расчёта
        private const double NightShiftBonusRate = 0.20;  // 20% от дневной ставки
        private const double OvertimeRate = 300.0;       // руб/час
        private const double TaxRate = 0.13;             // 13% НДФЛ
        private const double ViolationPenaltyRate = 0.15; // 15% штраф при нарушениях

        public SalaryData(double salaryBase, int daysWorked, int nightShifts, int overtimeHours, int experienceYears, bool hasViolations)
        {
            if (daysWorked <= 0) 
                throw new ArgumentException("Количество рабочих дней должно быть больше нуля.");
            if (nightShifts < 0 || nightShifts > daysWorked)
                throw new ArgumentException("Ночных смен не может быть больше отработанных дней и меньше нуля.");
            if (overtimeHours < 0)
                throw new ArgumentException("Сверхурочные часы не могут быть отрицательными.");
            if (salaryBase <= 0)
                throw new ArgumentException("Оклад должен быть положительным.");

            SalaryBase = salaryBase;
            DaysWorked = daysWorked;
            NightShifts = nightShifts;
            OvertimeHours = overtimeHours;
            ExperienceYears = experienceYears;
            HasViolations = hasViolations;
        }

        public void CalculateSalary()
        {
            double dailyRate = SalaryBase / DaysWorked;

            double nightBonus = dailyRate * NightShifts * NightShiftBonusRate;

            double overtimePay = OvertimeHours * OvertimeRate;

            double experienceBonus = 0;
            if (ExperienceYears > 10)
                experienceBonus = SalaryBase * 0.20;
            else if (ExperienceYears > 5)
                experienceBonus = SalaryBase * 0.10;

            Bonus = nightBonus + overtimePay + experienceBonus;

            double subtotal = SalaryBase + Bonus;

            Penalty = HasViolations ? subtotal * ViolationPenaltyRate : 0;
            subtotal -= Penalty;

            Tax = subtotal * TaxRate;

            TotalSalary = subtotal - Tax;
            CalculationDate = DateTime.Now;
        }

        public override string ToString()
        {
            return $"Дата расчёта: {CalculationDate:d}\n" +
                   $"Оклад: {SalaryBase:F2} руб.\n" +
                   $"Премия: {Bonus:F2} руб.\n" +
                   $"Штраф: {Penalty:F2} руб.\n" +
                   $"Налог: {Tax:F2} руб.\n" +
                   $"Итого: {TotalSalary:F2} руб.\n";
        }
    }
}