using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Diagnostics;

using System.Drawing;

using System.Linq;

using System.Security.Cryptography;

using System.Text;

using System.Threading.Tasks;

using System.Windows.Forms;



namespace WindowsFormsApplication1

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }



        private void button1_Click(object sender, EventArgs e)

        {

            if (letters.Checked == true || specialcharacters.Checked == true || numbers.Checked == true)

            {

                GeneratePassword();

            }

            else

            {

                alertMessage(3);

            }

            

        }



        private void GeneratePassword()

        {

            List<string> CheckedBoxes = new List<string>();



            if (letters.Checked) CheckedBoxes.Add("letters");

            if (specialcharacters.Checked) CheckedBoxes.Add("specialcharacters");

            if (numbers.Checked) CheckedBoxes.Add("numbers");

            string[] CheckBoxes = CheckedBoxes.ToArray();



            string GeneratedString = "";



            Random random = new Random();

            char[] alphas = "dFoQBNTfDeRmrHiUlSzCVJWLKcqXwOxEnMbsazkpYPhjtgIuZGyA".ToArray(); // Alphabet, lower and upper

            char[] specChar = "!£$%^&*()_+-={}[]~;'#<>,.?/".ToArray();

            int ran;



            for (int i = 0; i < password_length.Value; i++)

            {

                ran = random.Next(1, 1+CheckBoxes.Length);

                //Console.WriteLine(CheckBoxes[ran-1]);



                switch (CheckBoxes[ran-1])

                {

                    case "letters":

                        ran = random.Next(1, alphas.Length);

                        GeneratedString += alphas[ran-1];

                        break;

                    case "numbers":

                        ran = random.Next(0, 10);

                        GeneratedString += ran;

                        break;

                    case "specialcharacters":

                        ran = random.Next(1, specChar.Length);

                        GeneratedString += specChar[ran - 1];

                        break;

                }

                generated_password.Text = GeneratedString;

            }

        }



        private void label3_Click(object sender, EventArgs e)

        {

            if (generated_password.Text != "")

            {

                System.Windows.Forms.Clipboard.SetText(generated_password.Text);

                alertMessage(1); 

            }

            else 

            {

                alertMessage(2); 

            }

        }



        public void alertMessage(int id)

        {

            switch (id)

            {

                case 1:

                    MessageBox.Show("Password Copied To Clipboard", "Information..", MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1);

                    break;

                case 2:

                    MessageBox.Show("No Content To Copy To Clipboard", "Information..", MessageBoxButtons.OK, MessageBoxIcon.Exclamation, MessageBoxDefaultButton.Button1);

                    break;

                case 3:

                    MessageBox.Show("Please Select a Checkbox", "Information..", MessageBoxButtons.OK, MessageBoxIcon.Exclamation, MessageBoxDefaultButton.Button1);

                    break;

            }

        }

    }

}