//	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.IO;
using System.Text;
using System.Data;
using System.Drawing;

public partial class Mail : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
		Spludlow.WebControls.DisableOnClick(this.ButtonReceive);

		if (this.IsPostBack == false)
		{
			this.LiteralPage.Text = "1";

			foreach (string mailFolder in Spludlow.Email.ReceiveMail.MailFolders())
				this.DropDownListFolders.Items.Add(mailFolder);

			this.DropDownListOrder.Items.Add("ReceivedTime DESC");
			this.DropDownListOrder.Items.Add("FileSize DESC");

			this._ShowMail();
		}
    }

	protected void ButtonReceive_Click(object sender, EventArgs e)
	{
		this.GridViewStore.SelectedIndex = -1;

		//string userCallConfig = Spludlow.Config.Get("Spludlow.Mail.UserReceive", true);

		//if (userCallConfig == null)
		//{
		//	Spludlow.Email.ReceiveMail.ReadDrop();
		//}
		//else
		//{
		//	string[] callAddress = Spludlow.Text.Split(userCallConfig, ',', true, false);
		//	if (callAddress.Length != 4)
		//		throw new ApplicationException("Mail Receive User Call bad length, expected HATM comma seperate address: " + userCallConfig);

		//	Spludlow.Call.Now(callAddress[0], callAddress[1], callAddress[2], callAddress[3]);
		//}

		this._ShowMail();
	}

	private void _ShowMail()
	{
		int pageSize = 50;

		this.LiteralDrop.Text = "Drop File Count: " + Spludlow.Email.ReceiveMail.CountDrop();

		int pageIndex = Int32.Parse(this.LiteralPage.Text) - 1;

		string folder = this.DropDownListFolders.SelectedValue;

		DataTable storeTable = Spludlow.Email.ReceiveMail.QueryStore(pageIndex, pageSize, folder, this.DropDownListOrder.SelectedValue).Tables[0];

		string emailStoreHost = Environment.MachineName;

		StringBuilder url = new StringBuilder();
		url.Append("Generic.aspx?H=");
		url.Append(emailStoreHost);
		url.Append("&FILE=@StoreFilename&FILENAME=@Filename&MIME=@MimeType");
				
		string urlTemplate = url.ToString();
		
		string storeDirectory = Spludlow.Config.Get("SpludlowMail.Store");
		
		storeTable.Columns.Add("FileLink", typeof(string));
		storeTable.Columns.Add("TextFileLink", typeof(string));
		storeTable.Columns.Add("FileLengthText", typeof(string));

		foreach (DataRow row in storeTable.Rows)
		{
			long mailMessageId = (long)row["MailMessageId"];

			string extension = (string)row["FileExtention"];

			string filename = mailMessageId + extension;

			string storeFilename = Spludlow.Io.FileStore.FilePath(mailMessageId, storeDirectory, extension, false);

			url.Length = 0;
			url.Append(urlTemplate);
			url.Replace("@StoreFilename", HttpUtility.UrlEncode(storeFilename));			//	Link for outlook
			url.Replace("@Filename", HttpUtility.UrlEncode(filename));
			url.Replace("@MimeType", HttpUtility.UrlEncode("message/rfc822"));
			row["FileLink"] = url.ToString();

			url.Length = 0;
			url.Append(urlTemplate);
			url.Replace("@StoreFilename", HttpUtility.UrlEncode(storeFilename));			//	Link for notepad
			url.Replace("@Filename", HttpUtility.UrlEncode(filename + ".txt"));
			url.Replace("@MimeType", HttpUtility.UrlEncode("text/plain"));
			row["TextFileLink"] = url.ToString();

			row["FileLengthText"] = Spludlow.Text.DataSize((int)row["FileSize"]);
		}

		this.GridViewStore.DataSource = storeTable;
		this.GridViewStore.DataBind();
	}

	protected void GridViewStore_SelectedIndexChanged(object sender, EventArgs e)
	{
		long mailMessageId = Spludlow.WebControls.KeyInt64(this.GridViewStore, this.GridViewStore.SelectedIndex, "MailMessageId");

		this.GridViewAddresses.DataSource = Spludlow.Email.ReceiveMail.MessageAddresses(mailMessageId);
		this.GridViewAddresses.DataBind();
		
		string storeDirectory = Spludlow.Config.Get("SpludlowMail.Store");
		string storeFilename = Spludlow.Io.FileStore.FilePath(mailMessageId, storeDirectory, ".eml", false);

		this.ButtonDelete.Visible = true;

		if (this.CheckBoxReadAttachments.Checked == false)
			return;

		using (Spludlow.TempDirectory tempDir = new Spludlow.TempDirectory())
		{
			string directory = tempDir + @"\" + Path.GetFileNameWithoutExtension(storeFilename);
			Directory.CreateDirectory(directory);

			Spludlow.Email.SimpleMailMessage message = new Spludlow.Email.SimpleMailMessage(storeFilename, directory);

			this.GridViewAttachments.DataSource = message.AttachmentsTable;
			this.GridViewAttachments.DataBind();
			
			string archiveFilename = Spludlow.WebServices.CreateProgramDataTempFilename(".7z");

			Spludlow.Archive.Create(archiveFilename, directory);

			string emailStoreHost = Environment.MachineName;

			string filename = Path.GetFileName(archiveFilename);
			StringBuilder url = new StringBuilder();
			url.Append("Generic.aspx?H=");
			url.Append(emailStoreHost);
			url.Append("&FILE=@StoreFilename&FILENAME=@Filename&MIME=@MimeType");

			url.Replace("@StoreFilename", HttpUtility.UrlEncode(archiveFilename));
			url.Replace("@Filename", HttpUtility.UrlEncode(filename));
			url.Replace("@MimeType", HttpUtility.UrlEncode("data"));

			this.HyperLinkAttachments.NavigateUrl = url.ToString();
			this.HyperLinkAttachments.Text = filename;
		}
	}


	protected void ButtonPagePrev_Click(object sender, EventArgs e)
	{
		this.GridViewStore.SelectedIndex = -1;
		int page = Int32.Parse(this.LiteralPage.Text);
		this.LiteralPage.Text = (page - 1).ToString();
		this._ShowMail();
	}

	protected void ButtonPageNext_Click(object sender, EventArgs e)
	{
		this.GridViewStore.SelectedIndex = -1;
		int page = Int32.Parse(this.LiteralPage.Text);
		this.LiteralPage.Text = (page + 1).ToString();
		this._ShowMail();
	}

	protected void DropDownListFolders_SelectedIndexChanged(object sender, EventArgs e)
	{
		this.GridViewStore.SelectedIndex = -1;
		this.LiteralPage.Text = "1";
		this._ShowMail();
	}

	protected void GridViewStore_RowDataBound(object sender, GridViewRowEventArgs e)
	{
		if (e.Row.RowType != DataControlRowType.DataRow)
			return;

		DataRow row = ((DataRowView)e.Row.DataItem).Row;

		DateTime receivedTime = (DateTime)row["ReceivedTime"];

		int daysBack = (DateTime.Now.Date - receivedTime.Date).Days;

		e.Row.Cells[1].BackColor = Spludlow.Drawing.Colour.FromHSV(daysBack * 30, 0.5, 1);

	}


	protected void ButtonDelete_Click(object sender, EventArgs e)
	{
		long mailMessageId = Spludlow.WebControls.KeyInt64(this.GridViewStore, this.GridViewStore.SelectedIndex, "MailMessageId");

		Spludlow.Email.ReceiveMail.DeleteMailMessage(mailMessageId, true);

		this.GridViewStore.SelectedIndex = -1;

		this._ShowMail();
	}
}