using System;

using System.Collections.Generic;

​

using System.Linq;  

public class Program

{

    public static void Main()

    {

        OpeningHours morning = new OpeningHours(8, 11);

        OpeningHours evening = new OpeningHours(13, 18);

        OpeningDay sunday = OpeningDay.Open(DayOfWeek.Sunday, new List<OpeningHours> { morning, evening });

        OpeningDay monday = OpeningDay.Open(DayOfWeek.Monday, new List<OpeningHours> { morning, evening });

        OpeningDay tuesday = OpeningDay.Open(DayOfWeek.Tuesday, new List<OpeningHours> { morning, evening });

        OpeningDay wednesday = OpeningDay.Open(DayOfWeek.Wednesday, new List<OpeningHours> { morning, evening });

        OpeningDay thrusday = OpeningDay.Open(DayOfWeek.Thursday, new List<OpeningHours> { morning, evening });

        OpeningDay friday = OpeningDay.Open(DayOfWeek.Friday, new List<OpeningHours> { morning, evening });

        OpeningDay saturday = OpeningDay.Open(DayOfWeek.Saturday, new List<OpeningHours> { morning, evening });

​

        //BusinessDays businessDays = BusinessDays.Default();

        BusinessDays businessDays = BusinessDays.FromDays(new List<OpeningDay>() { sunday, monday, tuesday, wednesday, thrusday, friday, saturday });

        foreach(OpeningDay openingDay in businessDays.OpeningDays) {

            Console.WriteLine("Dia: {0}", openingDay.DayOfWeek);

            if(openingDay.IsOpen){

                foreach(OpeningHours openingHours in openingDay.OpeningHours) {

                    Console.WriteLine("Horário de Abertura: {0}", openingHours.OpeningTime);

                    Console.WriteLine("Horário de Fechamento: {0}", openingHours.ClosingTime);

                }   

            }

            else

                Console.WriteLine("Estabelecimento fechado.");

            Console.WriteLine("-------------------------------------------------");

        }

    }

}

​

public class BusinessDays 

{

    private List<OpeningDay> _openingDays;

    public IReadOnlyList<OpeningDay> OpeningDays 

    { 

        get 

        { 

            return _openingDays;

        }

    }

    private BusinessDays(List<OpeningDay> openingDays) {

        EnsureAllDaysOfWeekAreFilled(openingDays);

        _openingDays = openingDays;

    } 

    public static BusinessDays FromDays(List<OpeningDay> openingDays) {

        return new BusinessDays(openingDays);

    }

    public static BusinessDays Default() {

        List<OpeningDay> openingDays = new List<OpeningDay>();

        foreach(DayOfWeek dayOfWeek in Enum.GetValues(typeof(DayOfWeek))) {

            OpeningDay openingDay = OpeningDay.Closed(dayOfWeek);

            openingDays.Add(openingDay);

        }

        return new BusinessDays(openingDays);

    }

    private void EnsureAllDaysOfWeekAreFilled(List<OpeningDay> openingDays) {

        foreach(DayOfWeek dayOfWeek in Enum.GetValues(typeof(DayOfWeek))) {

            bool dayExists = openingDays.Any(od => od.DayOfWeek == dayOfWeek);

            if(!dayExists)

                throw new InvalidOperationException(string.Format("Todos os dias da semana devem ser cadastrados. Dia faltante {0}", dayOfWeek));

        }

    }

}

​

public class OpeningDay {

    public DayOfWeek DayOfWeek { get; private set; }

    public bool IsOpen { get; private set; }

    private List<OpeningHours> _openingHours;

    public IReadOnlyList<OpeningHours> OpeningHours 

    { 

        get 

        { 

            return _openingHours;

        }

    }

    private OpeningDay(DayOfWeek dayOfWeek) {

        DayOfWeek = dayOfWeek;

        IsOpen = false;

    }

    private OpeningDay(DayOfWeek dayOfWeek, List<OpeningHours> openingHours) {

        DayOfWeek = dayOfWeek;

        IsOpen = true;

        _openingHours = openingHours;

    }

    public static OpeningDay Closed(DayOfWeek dayOfWeek) {

        return new OpeningDay(dayOfWeek);   

    }

    public static OpeningDay Open(DayOfWeek dayOfWeek, List<OpeningHours> openingHours){

        return new OpeningDay(dayOfWeek, openingHours); 

    }

}

​

public class OpeningHours 

{

    public int OpeningTime { get; private set; }

    public int ClosingTime { get; private set; }

    public OpeningHours(int openingTime, int closingTime) {

        OpeningTime = openingTime;

        ClosingTime = closingTime;

        if(CheckIfItsTheSameTime())

            throw new InvalidOperationException(string.Format("As horas de abertura e fechamento não podem ser iguais."));

    }

    public bool CheckIfItsTheSameTime() {

        return OpeningTime == ClosingTime;

    }

    public bool CheckForIntersections(OpeningHours otherOpeningHours) {

        bool hasIntesection = false;

        if(!BeginsAndEndsFirst(otherOpeningHours) && !BeginsAndEndsAfter(otherOpeningHours))

           hasIntesection = true;

        return hasIntesection;

    }

    private bool BeginsAndEndsFirst(OpeningHours otherOpeningHours) {

        bool beginsAndEndsFirst = OpeningTime <= otherOpeningHours.OpeningTime && ClosingTime <= otherOpeningHours.OpeningTime;

        Console.WriteLine("BeginsAndEndsFirst: {0}", beginsAndEndsFirst);

        return beginsAndEndsFirst;

    }

    private bool BeginsAndEndsAfter(OpeningHours otherOpeningHours) {

        bool beginsAndEndsAfter = OpeningTime >= otherOpeningHours.ClosingTime && ClosingTime >= otherOpeningHours.ClosingTime;

        Console.WriteLine("BeginsAndEndsAfter: {0}", beginsAndEndsAfter);

        return beginsAndEndsAfter;

    }

}