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

namespace File_Browser
{
    public partial class Form1 : Form
    {
        string drive;

        public Form1()
        {
            InitializeComponent();
        }

        private void getDriveInfoButton_Click(object sender, EventArgs e)
        {
            drivesListBox.Items.Clear();
            drivesListBox.Items.Add("====Drives Info====");
            DriveInfo[] drives = DriveInfo.GetDrives();
            foreach(DriveInfo drive in drives)
            {
                if (!drive.IsReady) continue;
                drivesListBox.Items.Add(drive.Name + "\t" + drive.TotalSize / 1024.0f / 1024 / 1024 + " GB");
            }
        }

        private void drivesListBox_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (drivesListBox.SelectedItem == null) return;
            string temp = drivesListBox.SelectedItem.ToString().Substring(0, 3);
            if (!Environment.GetLogicalDrives().Contains(temp)) return;
            drive = temp;
            listFolders(new DirectoryInfo(drive));
            pathLabel.Text = drive;
        }

        private void listFolders(DirectoryInfo directory)
        {
            foldersListBox.Items.Clear();
            DirectoryInfo[] folders = directory.GetDirectories();
            foreach(DirectoryInfo folder in folders)
            {
                if (folder.Attributes.HasFlag(FileAttributes.Hidden)) continue;
                foldersListBox.Items.Add(folder.Name);
            }
            FileInfo[] files = directory.GetFiles();
            foreach(FileInfo file in files)
            {
                if (file.Attributes.HasFlag(FileAttributes.Hidden)) continue;
                foldersListBox.Items.Add(file.Name);
            }
        }

        private void foldersListBox_DoubleClick(object sender, EventArgs e)
        {
            if (foldersListBox.SelectedItem == null) return;
            string folder = foldersListBox.SelectedItem.ToString();
            if (new DirectoryInfo(pathLabel.Text + folder).Attributes.HasFlag(FileAttributes.Directory))
            {
                pathLabel.Text = pathLabel.Text + folder + @"\";
                listFolders(new DirectoryInfo(pathLabel.Text));
            } else {
                string temp = pathLabel.Text + folder;
                if (temp.Contains(".txt"))
                {
                    TextEditor textEditorForm = new TextEditor();
                    textEditorForm.Show();
                    textEditorForm.loadTextEditor(temp);
                } else
                {
                    System.Diagnostics.Process.Start(temp);
                }
            }
        }

        private void backButton_Click(object sender, EventArgs e)
        {
            if(pathLabel.Text != drive && pathLabel.Text != "N/A"){
                string location = pathLabel.Text.Substring(0, pathLabel.Text.Length - 1);
                location = location.Substring(0, location.LastIndexOf(@"\") + 1);
                listFolders(new DirectoryInfo(location));
                pathLabel.Text = location;
            }
        }

        private void newFolderButton_Click(object sender, EventArgs e)
        {
            if (String.IsNullOrEmpty(drive) && pathLabel.Text == "N/A") return;
            string name = Microsoft.VisualBasic.Interaction.InputBox("Enter Folder Name", "Creating New Folder", "New Folder");
            if (String.IsNullOrEmpty(name)) return;
            if (Directory.Exists(pathLabel.Text + name)) return;
            try {
                Directory.CreateDirectory(pathLabel.Text + name);
            } catch(Exception ex) {
                MessageBox.Show(ex.Message);
            }
            listFolders(new DirectoryInfo(pathLabel.Text));
         }

        private void deleteButton_Click(object sender, EventArgs e)
        {
            if (foldersListBox.SelectedItem == null) return;
            if (MessageBox.Show("Are you sure? You will delete: " + pathLabel.Text + foldersListBox.SelectedItem.ToString(), "Are you sure?", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes) {
                if(new DirectoryInfo(pathLabel.Text + foldersListBox.SelectedItem).Attributes.HasFlag(FileAttributes.Directory)){
                    Directory.Delete(pathLabel.Text + foldersListBox.SelectedItem, true);
                } else{
                    File.Delete(pathLabel.Text + foldersListBox.SelectedItem);
                }
                listFolders(new DirectoryInfo(pathLabel.Text));
            }
        }

        private void newTextFileButton_Click(object sender, EventArgs e)
        {
            if (String.IsNullOrEmpty(drive) && pathLabel.Text == "N/A") return;
            string name = Microsoft.VisualBasic.Interaction.InputBox("Enter Text File Name", "Creating New Text File", "New Text File");
            if (String.IsNullOrEmpty(name)) return;
            string temp = pathLabel.Text + name;
            if (!temp.Contains(".txt")) temp += ".txt";
            if (File.Exists(temp)) return;
            try
            {
                File.CreateText(temp).Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
            listFolders(new DirectoryInfo(pathLabel.Text));
            TextEditor textEditorForm = new TextEditor();
            textEditorForm.Show();
            textEditorForm.loadTextEditor(temp);
       }
    }
}