using System.IO;
using System.Windows.Forms;

namespace WinFormsApp1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void OpenDirectoryBtn_Click(object sender, EventArgs e)
        {
            var folderBrowserDialog = new FolderBrowserDialog();
            var res = folderBrowserDialog.ShowDialog();

            if (res != DialogResult.OK || string.IsNullOrEmpty(folderBrowserDialog.SelectedPath))
                return;

            DirectoryTextBox.Text = folderBrowserDialog.SelectedPath;
            UpdateDirectoryTreeView();
        }

        private void GenerateTestingDirectoryBtn_Click(object sender, EventArgs e)
        {
            if (!Directory.Exists(DirectoryTextBox.Text))
            {
                MessageBox.Show("Directory not found.");
                return;
            }

            try
            {
                TestingDirectoryGenerator.Generate(DirectoryTextBox.Text);
                UpdateDirectoryTreeView();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void DeleteDuplicateFilesBtn_Click(object sender, EventArgs e)
        {
            if (!Directory.Exists(DirectoryTextBox.Text))
            {
                MessageBox.Show("Directory not found.");
                return;
            }

            try
            {
                DirectoryCleaner.DeleteDuplicateFiles(DirectoryTextBox.Text);
                UpdateDirectoryTreeView();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void SortFilesBtn_Click(object sender, EventArgs e)
        {
            if (!Directory.Exists(DirectoryTextBox.Text))
            {
                MessageBox.Show("Directory not found.");
                return;
            }

            if (UseSortingByDayCheckBox.Checked == false &&
                UseSortingByWeekCheckBox.Checked == false &&
                UseSortingByYearCheckBox.Checked == false)
            {
                MessageBox.Show("Select at least one sorting option.");
                return;
            }

            var fileSorter = new FileSorter(
                UseSortingByDayCheckBox.Checked,
                UseSortingByWeekCheckBox.Checked,
                UseSortingByYearCheckBox.Checked
            );

            try
            {
                fileSorter.Sort(DirectoryTextBox.Text);
                UpdateDirectoryTreeView();

                if (!fileSorter.CheckSorting(DirectoryTextBox.Text))
                    MessageBox.Show("Sorting not correct.");
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void UpdateDirectoryTreeView()
        {
            var workingDir = new DirectoryInfo(DirectoryTextBox.Text);
            var rootNode = new TreeNode(workingDir.Name);

            foreach (var d1 in workingDir.GetDirectories())
            {
                var n1 = new TreeNode($"folder: {d1.Name}");

                foreach (var d2 in d1.GetDirectories())
                {
                    var n2 = new TreeNode($"folder: {d2.Name}");

                    foreach (var d3 in d2.GetDirectories())
                    {
                        var n3 = new TreeNode($"folder: {d3.Name}");

                        foreach (var f3 in d3.GetFiles())
                            n3.Nodes.Add($"file: {f3.Name}");

                        n2.Nodes.Add(n3);
                    }

                    foreach (var f2 in d2.GetFiles())
                        n2.Nodes.Add($"file: {f2.Name}");

                    n1.Nodes.Add(n2);
                }

                foreach (var f1 in d1.GetFiles())
                    n1.Nodes.Add($"file: {f1.Name}");

                rootNode.Nodes.Add(n1);
            }

            foreach (var f in workingDir.GetFiles())
                rootNode.Nodes.Add($"file: {f.Name}");

            DirectoryTreeView.Nodes.Clear();
            DirectoryTreeView.Nodes.Add(rootNode);
        }
    }
}