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

namespace Ejercicio_04_password
{
    class Program
    {
        static void Main(string[] args)
        {
            List <Password> contrasenyas = new List<Password>();

            Console.WriteLine("Numero de contraseñas a generar ( >= 1 ): ");
            int numPw = Int32.Parse(Console.ReadLine());
            if (numPw < 1) { numPw = 1; }

            Console.WriteLine("Longitud de las contraseñas a generar ( >= 8 ): ");
            int lonPw = Int32.Parse(Console.ReadLine());
            if (lonPw < 8) { lonPw = 8;}

            Console.WriteLine("Generando contraseñas...");
            for (int i = 0; i < numPw; i++)
            {
                Password pw = new Password(lonPw);
                contrasenyas.Add(pw);
            }

            foreach (Password pw in contrasenyas) {
                Console.WriteLine("{0} {1}", pw.Contrasenya, pw.esFuerte());
            }

            Console.ReadLine();
        }
    }

    class Password {
        public int Longitud { get; set; }
        public string Contrasenya { get; set; }

        public Password()
        {
            this.Longitud = 8; /* DEFAULT*/
            this.Contrasenya = generarPassword();
        }

        public Password(int longitud) {
            this.Longitud = longitud;
            this.Contrasenya = generarPassword();
            
        }

        public bool esFuerte() {
            bool forte = false;

            int mays = 0;
            int mins = 0;
            int nums = 0;
            for (int i = 0; i < this.Contrasenya.Length; i++)
            {
                if (char.IsUpper(this.Contrasenya[i])) mays++;
                if (char.IsLower(this.Contrasenya[i])) mins++;
                if (char.IsNumber(this.Contrasenya[i])) nums++;
            }

            //Console.WriteLine("{0} mayusculas, {1} minusculas, {2} numeros", mays, mins, nums);
            if (mays >= 2 && mins >= 1 && nums >= 5) { forte = true; }
            return forte;
        }

        private string generarPassword() {
            string validos = "$%#@!*abcdefghijklmnopqrstuvwxyz1234567890?ABCDEFGHIJKLMNOPQRSTUVWXYZ&";
            Thread.Sleep(16); //TODO we should be using RandomNumberGenerator instead
            Random aleatorio = new Random();
            string pw="";
            for (int i = 0; i < this.Longitud; i++) {
                int num = aleatorio.Next(validos.Length);
                char c = validos[num];
                pw += c;
            }


            //Console.WriteLine(pw);
            return pw;
        }


        

    }
}