using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using CsQuery;

using System.Diagnostics;

using System.Net;

namespace SatChanGen

{

	class KingOfSat

	{

		//

		// Summary:

		//     Create a new CQ object wrapping a single element.

		//

		// Parameters:

		//   aUrl:

		//     URL to a KingOfSat channel list. Typically a package list.

		//

		// Return:

		//   List of channels parsed.		

		public static List<Channel> Parse(string aUrl, string aOrbitalPosition)

		{

			string kos = new WebClient().DownloadString(aUrl);

			//Debug.Write(kos);

			CQ dom = kos;

			//Get all the Frequency elements in our page

			CQ sats = dom[".frq"];

			//Create our list of channels

			List<Channel> channels = new List<Channel>();

			foreach (IDomObject frq in sats.ToList())

			{

				Channel common = new Channel();

				//Parse channel details

				common.OrbitalPosition = WebUtility.HtmlDecode(frq.Cq().Find("tbody > tr > td > a > font").Get(0).InnerText).Trim();

			    if (common.OrbitalPosition != aOrbitalPosition)

			    {

                    //Wrong sat, skip

			        continue;

			    }

				common.Satellite = WebUtility.HtmlDecode(frq.Cq().Find("tbody > tr > td:nth-child(2) > a").Get(0).InnerText);

				common.Frequency = WebUtility.HtmlDecode(frq.Cq().Find("tbody > tr > td:nth-child(3)").Get(0).InnerText);

				common.Polarisation = WebUtility.HtmlDecode(frq.Cq().Find("tbody > tr > td:nth-child(4)").Get(0).InnerText);

				common.Transponder = WebUtility.HtmlDecode(frq.Cq().Find("tbody > tr > td:nth-child(5) > a").Get(0).InnerText);

				common.Beam = WebUtility.HtmlDecode(frq.Cq().Find("tbody > tr > td:nth-child(6) > a").Get(0).InnerText);

				common.Standard = WebUtility.HtmlDecode(frq.Cq().Find("tbody > tr > td:nth-child(7)").Get(0).InnerText);

				common.Modulation = WebUtility.HtmlDecode(frq.Cq().Find("tbody > tr > td:nth-child(8)").Get(0).InnerText);

				common.SymbolRate = WebUtility.HtmlDecode(frq.Cq().Find("tbody > tr > td:nth-child(9) > a").Get(0).InnerText);

				common.FEC = WebUtility.HtmlDecode(frq.Cq().Find("tbody > tr > td:nth-child(9) > a:nth-child(2)").Get(0).InnerText);

				try

				{

					common.Provider = WebUtility.HtmlDecode(frq.Cq().Find("tbody > tr > td:nth-child(10) > b").Get(0).InnerText);

				}

				catch (Exception)

				{

				}

				common.Bitrate = WebUtility.HtmlDecode(frq.Cq().Find("tbody > tr > td:nth-child(10)").Get(0).InnerText);

				if (common.Bitrate.Substring(0, ", ".Length) == ", ")

				{

					common.Bitrate = common.Bitrate.Substring(", ".Length, common.Bitrate.Length - ", ".Length);

				}

				//

				common.NetworkID = WebUtility.HtmlDecode(frq.Cq().Find("tbody > tr > td:nth-child(11)").Get(0).InnerText);

				common.NetworkID = common.NetworkID.Substring("NID:".Length, common.NetworkID.Length - "NID:".Length);

				//

				common.TransponderID = WebUtility.HtmlDecode(frq.Cq().Find("tbody > tr > td:nth-child(12)").Get(0).InnerText);

				common.TransponderID = common.TransponderID.Substring("TID:".Length, common.TransponderID.Length - "TID:".Length);

				//We got common properties for the coming channels

				//Debug.Write(common.ToString());

				//Now get all the channels for that frequency

				//Channel common = new Channel();

				CQ channelsDiv = frq.Cq().Next("div");

				CQ channelsTableRows = channelsDiv.Find("table.fl > tbody").Children("tr");

				foreach (IDomObject row in channelsTableRows)

				{

					Channel channel = new Channel();

					//Initialize this channel with common properties on this frequency

                    channel.Copy(common);

					//Try and parse channel name

					CQ cqChannelName = row.Cq().Find("td:nth-child(3) > a");

					if (cqChannelName.Length == 0)

					{

						cqChannelName = row.Cq().Find("td:nth-child(3) > i");

						if (cqChannelName.Length == 0)

						{

							//Can't get channel name

							Debug.Write("WARNING: Can't find channel name! Skipping this channel");

							continue;

						}

					}

					channel.Name = WebUtility.HtmlDecode(cqChannelName.Get(0).InnerText).Trim();

					if (channel.Name == "Name")

					{

						//Skipping header rows

						continue;

					}

					//So we have a channel name get the other properties then

					channel.Country = WebUtility.HtmlDecode(row.Cq().Find("td:nth-child(4)").Get(0).InnerText).Trim();

					channel.Category = WebUtility.HtmlDecode(row.Cq().Find("td:nth-child(5)").Get(0).InnerText).Trim();

					//Skip the packages

					//Skip the encryptions

					channel.SID = WebUtility.HtmlDecode(row.Cq().Find("td:nth-child(8)").Get(0).InnerText).Trim();

					channel.VPID = WebUtility.HtmlDecode(row.Cq().Find("td:nth-child(9)").Get(0).InnerText).Trim();

					//Skip audios

					channel.PMT = WebUtility.HtmlDecode(row.Cq().Find("td:nth-child(11)").Get(0).InnerText).Trim();

					channel.PCR = WebUtility.HtmlDecode(row.Cq().Find("td:nth-child(11)").Get(0).InnerText).Trim();

					channel.TXT = WebUtility.HtmlDecode(row.Cq().Find("td:nth-child(11)").Get(0).InnerText).Trim();

					//Append that new channel to our list

					channels.Add(channel);

					//Show it in debug output

					Debug.Write(channel);

				} //For each channel

			} //For each frequency

			return channels;

		}

	}

}