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

namespace BusLib
{
    public abstract class BaseBus
    {
        protected string model;
        private List <char> AllowedSymbols = new List<char> {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','W','Z'};
        public string Model
        {
            get
            {
                return model;
            }
            set
            {
                if (model.Length < 5)
                {
                    foreach(char i in model)
                    {
                        if (AllowedSymbols.Contains(i))
                        {
                            continue;
                        }
                        else
                        {
                            throw new ArgumentException($"Model {model} is not allowed");
                        }
                    }
                }
                else
                {
                    throw new ArgumentException($"Model {model} is not allowed");
                }
            }
        }
        protected double power;
        public double Power
        {
            get
            {
                return power;
            }
            set
            {
                if (power < 50)
                {
                    throw new ArgumentException("Power cannot be less 50 h.p.");
                }
                else
                {
                    power = value;
                }
            }
        }
        protected uint seatCount;
        public uint SeatCount
        {
            get
            {
                return seatCount;
            }
            set
            {
                if (seatCount < 8)
                {
                    throw new ArgumentException("Bus cannot have less than 8 seats");
                }
                else
                {
                    seatCount = value;
                }
            }
        }
        public override string ToString()
        {
            return $"Model: {model}; Power: {power}; SeatCount {seatCount}.";
        }
        abstract public int Transport();
        public BaseBus(string model, int power, uint seatCount)
        {
            this.model = model;
            this.power = power;
            this.seatCount = seatCount;
        }
    }
    public class BigBus: BaseBus
    {
        public BigBus(string model, int power, uint seatCount) : base(model, power, seatCount)
        {
            this.model = model;
            this.power = power;
            this.seatCount = seatCount;
        }
        public override string ToString()
        {
            return "BigBus"+base.ToString();
        }
        public override int Transport()
        {
            Random rnd = new Random();
            int RandomPassengers = rnd.Next(1, (int)SeatCount+1);
            Console.WriteLine($"BigBus {Model} transported {RandomPassengers} passengers");
            return RandomPassengers;
        }
    }
    public class MiniBus: BaseBus
    {
        public MiniBus(string model, int power, uint seatCount) : base(model, power, seatCount)
        {
            this.model = model;
            this.power = power;
            this.seatCount = seatCount;
        }
        public override string ToString()
        {
            return "MiniBus" + base.ToString();
        }
        public override int Transport()
        {
            Console.WriteLine($"MiniBus {Model}(with power {Power}) transported {SeatCount} passengers");
            return (int)SeatCount;
        }
    }
}