//	Spludlow Software
//	Copyright © Samuel P. Ludlow 2020 All Rights Reserved
//	Distributed under the terms of the GNU General Public License version 3
//	Distributed WITHOUT ANY WARRANTY; without implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE
//	https://www.spludlow.co.uk/LICENCE.TXT
//	The Spludlow logo is a registered trademark of Samuel P. Ludlow and may not be used without permission
//	v1.14

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

using System.Text;
using System.Data;

public partial class DisplayDir : System.Web.UI.UserControl
{
	protected void Page_Load(object sender, EventArgs e)
	{
		if (this.IsPostBack == false)
		{
			foreach (string host in Spludlow.Config.Hosts())
			{
				this.DropDownListHosts.Items.Add(host);
				if (host == Environment.MachineName)
					this.DropDownListHosts.SelectedIndex = this.DropDownListHosts.Items.Count - 1;
			}

			this.DropDownListHosts_SelectedIndexChanged(null, null);
		}
	}

	protected void DropDownListHosts_SelectedIndexChanged(object sender, EventArgs e)
	{
		string host = this.DropDownListHosts.SelectedValue;

		this.LiteralCurrentDirectory.Text = null;

		this.GridViewDrives.SelectedIndex = -1;

		this.GridViewDirectory.SelectedIndex = -1;
		this.GridViewDirectory.DataSource = null;
		this.GridViewDirectory.DataBind();

		this.GridViewDrives.DataSource = Spludlow.Io.DirectoryList.ListDrives(host);
		this.GridViewDrives.DataBind();

		this._ShowDirectory();
	}

	protected void GridViewDrives_SelectedIndexChanged(object sender, EventArgs e)
	{
		string driveName = (string)this.GridViewDrives.DataKeys[this.GridViewDrives.SelectedIndex][0];

		this.LiteralCurrentDirectory.Text = driveName;

		this.GridViewDirectory.SelectedIndex = -1;
		this.GridViewDirectory.DataSource = null;
		this.GridViewDirectory.DataBind();

		this._ShowDirectory();
	}

	protected void GridViewDirectory_SelectedIndexChanged(object sender, EventArgs e)
	{
		int index = this.GridViewDirectory.SelectedIndex;

		string type = (string)this.GridViewDirectory.DataKeys[index]["Type"];
		string path = (string)this.GridViewDirectory.DataKeys[index]["Path"];

		if (type == "D")
		{
			this.GridViewDirectory.SelectedIndex = -1;

			this.LiteralCurrentDirectory.Text = path;
			this._ShowDirectory();
		}
	}

	protected void LinkButtonPathParts_Command(object sender, CommandEventArgs e)
	{
		LinkButton linkButton = (LinkButton)sender;
		DataListItem item = (DataListItem)linkButton.NamingContainer;

		this.LiteralCurrentDirectory.Text = (string)this.DataListPathParts.DataKeys[item.ItemIndex];

		this.GridViewDirectory.SelectedIndex = -1;

		this._ShowDirectory();
	}

	private void _ShowDirectory()
	{
		string path = this.LiteralCurrentDirectory.Text;

		if (path == null || path.Length == 0)
		{
			this.LiteralInfo.Text = "Nothing Selected";

			this.DataListPathParts.DataSource = null;
			this.DataListPathParts.DataBind();

			return;
		}


		string host = this.DropDownListHosts.SelectedValue;

		DataTable table;

		try
		{
			table = Spludlow.Io.DirectoryList.List(host, path, false, false).Tables[0];
		}
		catch (Exception ee)
		{
			this.LabelError.Text = ee.Message;
			return;
		}

		DataView view = new DataView(table);

		view.RowFilter = "Type = 'D'";
		int dirCount = view.Count;
		view.RowFilter = "Type = 'F'";
		int fileCount = view.Count;

		if (dirCount == 0 && fileCount == 0)
			this.LiteralInfo.Text = "Empty Directory " + path;
		else
			this.LiteralInfo.Text = dirCount + " Directories, " + fileCount + " Files, " + path;

		view.RowFilter = null;
		view.Sort = "Type, Path";

		this.GridViewDirectory.DataSource = view;
		this.GridViewDirectory.DataBind();


		this.DataListPathParts.DataSource = this.PathParts(path);
		this.DataListPathParts.DataBind();

	}

	public Boolean DirectoryBold(string type)
	{
		return (type == "D");
	}

	public DataTable PathParts(string directory)
	{
		DataTable table = new DataTable();
		table.Columns.Add("Name", typeof(string));
		table.Columns.Add("Path", typeof(string));

		string[] parents = Spludlow.Text.Split(directory, '\\', true, false);

		StringBuilder parentPath = new StringBuilder();
		for (int index = 0; index < parents.Length; ++index)
		{
			string parent = parents[index];

			if (index == 0)
			{
				parentPath.Append(parent);
				parentPath.Append(@"\");
			}
			else
			{
				if (index == 1)
				{
					parentPath.Append(parent);
				}
				else
				{
					parentPath.Append(@"\");
					parentPath.Append(parent);
				}
			}
			table.Rows.Add(new object[] { parent, parentPath.ToString() });
		}

		return table;
	}

	public string DataSize(string type, ulong length)
	{
		if (type == "D")
			return "-";

		if (length == 0)
			return "0";

		return Spludlow.Text.DataSize((long)length);
	}

	public void Refresh()
	{
		this._ShowDirectory();

		string host = this.DropDownListHosts.SelectedValue;

		this.GridViewDrives.DataSource = Spludlow.Io.DirectoryList.ListDrives(host);
		this.GridViewDrives.DataBind();
	}

	public string CurrentHost()
	{
		return this.DropDownListHosts.SelectedValue;
	}

	public string CurrentDirectory()
	{
		if (this.LiteralCurrentDirectory.Text.Length == 0)
			return null;

		return this.LiteralCurrentDirectory.Text;
	}

	public string SelectedFile()
	{
		int index = this.GridViewDirectory.SelectedIndex;

		if (index == -1)
			return null;

		if (index >= this.GridViewDirectory.DataKeys.Count)
		{
			this.GridViewDirectory.SelectedIndex = -1;
			return null;
		}

		string type = (string)this.GridViewDirectory.DataKeys[index]["Type"];
		string path = (string)this.GridViewDirectory.DataKeys[index]["Path"];

		if (type != "F")
			return null;

		return path;
	}

	public void UnSelectFiles()
	{
		this.GridViewDirectory.SelectedIndex = -1;

		this.Refresh();
	}

	public string BarColour(object percentObj)
	{
		if (percentObj == null || percentObj.GetType() != typeof(decimal))
			return "";

		decimal percent = (decimal)percentObj;

		decimal red = 0xFF;
		if (percent < 50)
			red = percent * 5.1M;

		decimal green = 0xFF;
		if (percent >= 50)
			green = (50 - (percent - 50)) * 5.1M;

		return "#" + ((int)red).ToString("X2") + ((int)green).ToString("X2") + "00";
	}




}