using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace ListBox
{
    public partial class frmListBox : Form
    {
        public frmListBox()
        {
            InitializeComponent();

        }// Working

        private void btnAddItems_Click(object sender, EventArgs e)// Working
        {
            if (rbtnUnseperated.Checked)
            {
                lbxFirst.Items.Add(txtEntry.Text);
            }
            else if (rbtnSpaceSeperated.Checked)
            {
                string[] ArraySplitter = txtEntry.Text.Split(' ');

                foreach (string arraySplits in  ArraySplitter)
                {
                    lbxFirst.Items.Add(arraySplits);
                }
            }
            else if (rbtnCommaSeperated.Checked)
            {
                string[] ArraySplitter = txtEntry.Text.Split(',');

                foreach (string arraySplits in  ArraySplitter)
                {
                    lbxFirst.Items.Add(arraySplits);
                }
            }
            btnReshuffle.Enabled = true;
            btnRotateDown.Enabled = true;
        }

        private void btnMoveUp_Click(object sender, EventArgs e)// Working
        {
            if (lbxFirst.SelectedIndex > 0 && lbxFirst.SelectedIndex != -1)
            {
                object itemMoveUp = lbxFirst.SelectedItem;
                int index = lbxFirst.SelectedIndex;
                lbxFirst.Items.RemoveAt(index);
                lbxFirst.Items.Insert(index -1, itemMoveUp);
                lbxFirst.SelectedItem = itemMoveUp;
            }
        }

        private void btnRotateDown_Click(object sender, EventArgs e)// Working
        {
                int index = lbxFirst.Items.Count - 1;
                object itemRotate = lbxFirst.Items[index];
                lbxFirst.Items.RemoveAt(index);
                lbxFirst.Items.Insert(0, itemRotate);
        }

        private void btnReshuffle_Click(object sender, EventArgs e)// Working
        {
            Random rand = new Random();
            for (int i = lbxFirst.Items.Count - 1; i > 0; i--)
            {
                int next = rand.Next(i - 1);
                object temp = lbxFirst.Items[i];
                lbxFirst.Items[i] = lbxFirst.Items[next];
                lbxFirst.Items[next] = temp;
            }
        }

        private void btnMoveSelectedItem_Click(object sender, EventArgs e)// Working
        {
            for (int i = lbxFirst.SelectedItems.Count - 1; i >= 0; i--)
            {
                lbxSecond.Items.Add(lbxFirst.SelectedItems[i]);
                lbxFirst.Items.Remove(lbxFirst.SelectedItems[i]);
            }
            lbxFirst.SelectedItems.Clear();
            btnMoveAllItems.Enabled = true;
        }

        private void btnMoveAllItems_Click(object sender, EventArgs e)//Working
        {
            for (int i = lbxSecond.Items.Count - 1; i >= 0; i--)
            {
                lbxFirst.Items.Add(lbxSecond.Items[i]);
            }
            lbxSecond.Items.Clear();
            btnMoveAllItems.Enabled = false;
        }

        private void btnClearSelection_Click(object sender, EventArgs e)// Working
        {
            lbxFirst.ClearSelected();
            btnClearSelection.Enabled = false;
        }

        private void btnDeleteSelected_Click(object sender, EventArgs e)// Working
        {
            for (int i = lbxSecond.SelectedItems.Count - 1; i >= 0; i--)
            {
                lbxSecond.Items.Remove(lbxSecond.SelectedItems[i]);
            }
            if (lbxSecond.Items.Count == 0)
            {
                btnMoveAllItems.Enabled = false;
            }
        }

        private void btnReset_Click(object sender, EventArgs e)// Working
        {
            txtEntry.Clear();
            lbxFirst.Items.Clear();
            lbxSecond.Items.Clear();
            btnAddItems.Enabled = false;
            btnMoveUp.Enabled = false;
            btnRotateDown.Enabled = false;
            btnReshuffle.Enabled = false;
            btnClearSelection.Enabled = false;
            btnMoveSelectedItem.Enabled = false;
            btnMoveAllItems.Enabled = false;
            btnDeleteSelected.Enabled = false;
        }

        private void btnExit_Click(object sender, EventArgs e)// Working
        {
            if (MessageBox.Show("Are you sure you want to quit?", "Closing", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
            {
                StreamWriter sW = File.CreateText(@"listtext.txt");
                for (int i = 0; i < lbxFirst.Items.Count; i++)
                {
                    sW.WriteLine(Convert.ToString(lbxFirst.Items[i]));
                }
                sW.Close();
                this.Close();
            }
        }

        private void lbxFirst_SelectedIndexChanged(object sender, EventArgs e)// Working
        {
            if (lbxFirst.SelectedItems.Count == 0)
            {
                btnClearSelection.Enabled = false;
                btnMoveSelectedItem.Enabled = false;
            }
            else if (lbxFirst.SelectedItems.Count > 0)
            {
                btnClearSelection.Enabled = true;
                btnMoveSelectedItem.Enabled = true;
                if (lbxFirst.SelectedItems.Count == 1)
                {
                    btnMoveSelectedItem.Text = "Move Selected Item >>";
                }
                else if (lbxFirst.SelectedItems.Count > 1)
                {
                    btnMoveSelectedItem.Text = "Move Selected Items >>";
                }
            }
            if (lbxFirst.SelectedItems.Count == 1 && lbxFirst.SelectedIndex != 0)
            {
                btnMoveUp.Enabled = true;
            }
            else if (lbxFirst.SelectedIndex == 0)
            {
                btnMoveUp.Enabled = false;
            }
        }

        private void lbxSecond_SelectedIndexChanged(object sender, EventArgs e)// Working
        {
            if (lbxSecond.SelectedItems.Count == 0)
            {
                btnDeleteSelected.Enabled = false;
            }
            else if (lbxSecond.SelectedItems.Count > 0)
            {
                btnDeleteSelected.Enabled = true;
            }
            if (lbxSecond.Items.Count >= 1)
            {
                btnMoveAllItems.Enabled = true;
            }
            else
            {
                btnMoveAllItems.Enabled = false;
            }
        }

        private void frmListBox_Load(object sender, EventArgs e)// Working
        {
            StreamReader sR = new StreamReader(Convert.ToString(@"listtext.txt"));
            while (sR.Peek() >= 0)
            {
                lbxFirst.Items.Add(Convert.ToString(sR.ReadLine()));
            }
            if (lbxFirst.Items.Count >= 1)
            {
                btnReshuffle.Enabled = true;
                btnRotateDown.Enabled = true;
            }
            else
            {
                btnReshuffle.Enabled = false;
                btnRotateDown.Enabled = false;
            }
            if (lbxSecond.Items.Count >= 1)
            {
                btnMoveAllItems.Enabled = true;
                btnDeleteSelected.Enabled = true;
            }
            else
            {
                btnMoveAllItems.Enabled = false;
                btnDeleteSelected.Enabled = true;
            }

        }

        private void txtEntry_TextChanged(object sender, EventArgs e)// Working
        {
            if (txtEntry.Text.Length > 0)
            {
                btnAddItems.Enabled = true;
            }
            else if (txtEntry.Text.Length == 0)
            {
                btnAddItems.Enabled = false;
            }
        }
    }
}