using System.Collections.Generic;
using System.IO;
using System.Xml;

namespace MyNes.Core
{
    public class NesCartDatabase
    {
    	private static List<NesCartDatabaseGameInfo> _databaseRoms = new List<NesCartDatabaseGameInfo>();

    	public static string DBVersion = "";

    	public static string DBConformance = "";

    	public static string DBAgent = "";

    	public static string DBAuthor = "";

    	public static string DBTimeStamp = "";

    	public static bool Ready = false;

    	public static List<NesCartDatabaseGameInfo> DatabaseRoms => _databaseRoms;

    	public static void LoadDatabase(string fileName, out bool success)
    	{
    		success = false;
    		Ready = false;
    		if (!File.Exists(fileName))
    		{
    			return;
    		}
    		_databaseRoms.Clear();
    		Stream stream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
    		XmlReaderSettings xmlReaderSettings = new XmlReaderSettings();
    		xmlReaderSettings.DtdProcessing = DtdProcessing.Ignore;
    		xmlReaderSettings.IgnoreWhitespace = true;
    		XmlReader xmlReader = XmlReader.Create(stream, xmlReaderSettings);
    		NesCartDatabaseGameInfo nesCartDatabaseGameInfo = default(NesCartDatabaseGameInfo);
    		nesCartDatabaseGameInfo.Cartridges = new List<NesCartDatabaseCartridgeInfo>();
    		nesCartDatabaseGameInfo.Game_AltName = "";
    		nesCartDatabaseGameInfo.Game_Catalog = "";
    		nesCartDatabaseGameInfo.Game_Class = "";
    		nesCartDatabaseGameInfo.Game_Developer = "";
    		nesCartDatabaseGameInfo.Game_Name = "";
    		nesCartDatabaseGameInfo.Game_Players = "";
    		nesCartDatabaseGameInfo.Game_Publisher = "";
    		nesCartDatabaseGameInfo.Game_Region = "";
    		nesCartDatabaseGameInfo.Game_ReleaseDate = "";
    		while (xmlReader.Read())
    		{
    			if ((xmlReader.Name == "xml") & xmlReader.IsStartElement())
    			{
    				if (xmlReader.MoveToAttribute("version"))
    				{
    					DBVersion = xmlReader.Value;
    				}
    				if (xmlReader.MoveToAttribute("conformance"))
    				{
    					DBConformance = xmlReader.Value;
    				}
    				if (xmlReader.MoveToAttribute("agent"))
    				{
    					DBAgent = xmlReader.Value;
    				}
    				if (xmlReader.MoveToAttribute("author"))
    				{
    					DBAuthor = xmlReader.Value;
    				}
    				if (xmlReader.MoveToAttribute("timestamp"))
    				{
    					DBTimeStamp = xmlReader.Value;
    				}
    			}
    			else
    			{
    				if (!((xmlReader.Name == "game") & xmlReader.IsStartElement()))
    				{
    					continue;
    				}
    				nesCartDatabaseGameInfo = default(NesCartDatabaseGameInfo);
    				if (xmlReader.MoveToAttribute("name"))
    				{
    					nesCartDatabaseGameInfo.Game_Name = xmlReader.Value;
    				}
    				if (xmlReader.MoveToAttribute("altname"))
    				{
    					nesCartDatabaseGameInfo.Game_AltName = xmlReader.Value;
    				}
    				if (xmlReader.MoveToAttribute("class"))
    				{
    					nesCartDatabaseGameInfo.Game_Class = xmlReader.Value;
    				}
    				if (xmlReader.MoveToAttribute("catalog"))
    				{
    					nesCartDatabaseGameInfo.Game_Catalog = xmlReader.Value;
    				}
    				if (xmlReader.MoveToAttribute("publisher"))
    				{
    					nesCartDatabaseGameInfo.Game_Publisher = xmlReader.Value;
    				}
    				if (xmlReader.MoveToAttribute("developer"))
    				{
    					nesCartDatabaseGameInfo.Game_Developer = xmlReader.Value;
    				}
    				if (xmlReader.MoveToAttribute("region"))
    				{
    					nesCartDatabaseGameInfo.Game_Region = xmlReader.Value;
    				}
    				if (xmlReader.MoveToAttribute("players"))
    				{
    					nesCartDatabaseGameInfo.Game_Players = xmlReader.Value;
    				}
    				if (xmlReader.MoveToAttribute("date"))
    				{
    					nesCartDatabaseGameInfo.Game_ReleaseDate = xmlReader.Value;
    				}
    				NesCartDatabaseCartridgeInfo nesCartDatabaseCartridgeInfo = new NesCartDatabaseCartridgeInfo();
    				nesCartDatabaseCartridgeInfo.PAD_h = "";
    				nesCartDatabaseCartridgeInfo.PAD_v = "";
    				nesCartDatabaseCartridgeInfo.PRG_crc = "";
    				nesCartDatabaseCartridgeInfo.PRG_name = "";
    				nesCartDatabaseCartridgeInfo.PRG_sha1 = "";
    				nesCartDatabaseCartridgeInfo.PRG_size = "";
    				nesCartDatabaseCartridgeInfo.chip_type = new List<string>();
    				nesCartDatabaseCartridgeInfo.CHR_crc = "";
    				nesCartDatabaseCartridgeInfo.CHR_name = "";
    				nesCartDatabaseCartridgeInfo.CHR_sha1 = "";
    				nesCartDatabaseCartridgeInfo.CHR_size = "";
    				nesCartDatabaseCartridgeInfo.CIC_type = "";
    				nesCartDatabaseCartridgeInfo.Board_Mapper = "";
    				nesCartDatabaseCartridgeInfo.Board_Pcb = "";
    				nesCartDatabaseCartridgeInfo.Board_Type = "";
    				nesCartDatabaseCartridgeInfo.VRAM_sizes = new List<string>();
    				nesCartDatabaseCartridgeInfo.WRAMBanks = new List<SRAMBankInfo>();
    				while (xmlReader.Read())
    				{
    					if ((xmlReader.Name == "game") & !xmlReader.IsStartElement())
    					{
    						_databaseRoms.Add(nesCartDatabaseGameInfo);
    						break;
    					}
    					if ((xmlReader.Name == "cartridge") & xmlReader.IsStartElement())
    					{
    						if (nesCartDatabaseGameInfo.Cartridges == null)
    						{
    							nesCartDatabaseGameInfo.Cartridges = new List<NesCartDatabaseCartridgeInfo>();
    						}
    						nesCartDatabaseCartridgeInfo = new NesCartDatabaseCartridgeInfo();
    						nesCartDatabaseCartridgeInfo.PAD_h = "";
    						nesCartDatabaseCartridgeInfo.PAD_v = "";
    						nesCartDatabaseCartridgeInfo.PRG_crc = "";
    						nesCartDatabaseCartridgeInfo.PRG_name = "";
    						nesCartDatabaseCartridgeInfo.PRG_sha1 = "";
    						nesCartDatabaseCartridgeInfo.PRG_size = "";
    						nesCartDatabaseCartridgeInfo.chip_type = new List<string>();
    						nesCartDatabaseCartridgeInfo.CHR_crc = "";
    						nesCartDatabaseCartridgeInfo.CHR_name = "";
    						nesCartDatabaseCartridgeInfo.CHR_sha1 = "";
    						nesCartDatabaseCartridgeInfo.CHR_size = "";
    						nesCartDatabaseCartridgeInfo.CIC_type = "";
    						nesCartDatabaseCartridgeInfo.Board_Mapper = "";
    						nesCartDatabaseCartridgeInfo.Board_Pcb = "";
    						nesCartDatabaseCartridgeInfo.Board_Type = "";
    						nesCartDatabaseCartridgeInfo.VRAM_sizes = new List<string>();
    						nesCartDatabaseCartridgeInfo.WRAMBanks = new List<SRAMBankInfo>();
    						if (xmlReader.MoveToAttribute("system"))
    						{
    							nesCartDatabaseCartridgeInfo.System = xmlReader.Value;
    						}
    						if (xmlReader.MoveToAttribute("crc"))
    						{
    							nesCartDatabaseCartridgeInfo.CRC = xmlReader.Value;
    						}
    						if (xmlReader.MoveToAttribute("sha1"))
    						{
    							nesCartDatabaseCartridgeInfo.SHA1 = xmlReader.Value;
    						}
    						if (xmlReader.MoveToAttribute("dump"))
    						{
    							nesCartDatabaseCartridgeInfo.Dump = xmlReader.Value;
    						}
    						if (xmlReader.MoveToAttribute("dumper"))
    						{
    							nesCartDatabaseCartridgeInfo.Dumper = xmlReader.Value;
    						}
    						if (xmlReader.MoveToAttribute("datedumped"))
    						{
    							nesCartDatabaseCartridgeInfo.DateDumped = xmlReader.Value;
    						}
    					}
    					else if ((xmlReader.Name == "cartridge") & !xmlReader.IsStartElement())
    					{
    						nesCartDatabaseGameInfo.Cartridges.Add(nesCartDatabaseCartridgeInfo);
    					}
    					else if ((xmlReader.Name == "board") & xmlReader.IsStartElement())
    					{
    						if (xmlReader.MoveToAttribute("type"))
    						{
    							nesCartDatabaseCartridgeInfo.Board_Type = xmlReader.Value;
    						}
    						if (xmlReader.MoveToAttribute("pcb"))
    						{
    							nesCartDatabaseCartridgeInfo.Board_Pcb = xmlReader.Value;
    						}
    						if (xmlReader.MoveToAttribute("mapper"))
    						{
    							nesCartDatabaseCartridgeInfo.Board_Mapper = xmlReader.Value;
    						}
    					}
    					else if ((xmlReader.Name == "prg") & xmlReader.IsStartElement())
    					{
    						if (xmlReader.MoveToAttribute("name"))
    						{
    							nesCartDatabaseCartridgeInfo.PRG_name = xmlReader.Value;
    						}
    						if (xmlReader.MoveToAttribute("size"))
    						{
    							nesCartDatabaseCartridgeInfo.PRG_size = xmlReader.Value;
    						}
    						if (xmlReader.MoveToAttribute("crc"))
    						{
    							nesCartDatabaseCartridgeInfo.PRG_crc = xmlReader.Value;
    						}
    						if (xmlReader.MoveToAttribute("sha1"))
    						{
    							nesCartDatabaseCartridgeInfo.PRG_sha1 = xmlReader.Value;
    						}
    					}
    					else if ((xmlReader.Name == "chr") & xmlReader.IsStartElement())
    					{
    						if (xmlReader.MoveToAttribute("name"))
    						{
    							nesCartDatabaseCartridgeInfo.CHR_name = xmlReader.Value;
    						}
    						if (xmlReader.MoveToAttribute("size"))
    						{
    							nesCartDatabaseCartridgeInfo.CHR_size = xmlReader.Value;
    						}
    						if (xmlReader.MoveToAttribute("crc"))
    						{
    							nesCartDatabaseCartridgeInfo.CHR_crc = xmlReader.Value;
    						}
    						if (xmlReader.MoveToAttribute("sha1"))
    						{
    							nesCartDatabaseCartridgeInfo.CHR_sha1 = xmlReader.Value;
    						}
    					}
    					else if ((xmlReader.Name == "vram") & xmlReader.IsStartElement())
    					{
    						if (xmlReader.MoveToAttribute("size"))
    						{
    							nesCartDatabaseCartridgeInfo.VRAM_sizes.Add(xmlReader.Value);
    						}
    					}
    					else if ((xmlReader.Name == "wram") & xmlReader.IsStartElement())
    					{
    						string sIZE = "";
    						bool bATTERY = false;
    						int result = 0;
    						if (xmlReader.MoveToAttribute("size"))
    						{
    							sIZE = xmlReader.Value;
    						}
    						if (xmlReader.MoveToAttribute("battery"))
    						{
    							bATTERY = xmlReader.Value == "1";
    						}
    						if (xmlReader.MoveToAttribute("id"))
    						{
    							int.TryParse(xmlReader.Value, out result);
    						}
    						nesCartDatabaseCartridgeInfo.WRAMBanks.Add(new SRAMBankInfo(result, sIZE, bATTERY));
    					}
    					else if ((xmlReader.Name == "chip") & xmlReader.IsStartElement())
    					{
    						if (xmlReader.MoveToAttribute("type"))
    						{
    							if (nesCartDatabaseCartridgeInfo.chip_type == null)
    							{
    								nesCartDatabaseCartridgeInfo.chip_type = new List<string>();
    							}
    							nesCartDatabaseCartridgeInfo.chip_type.Add(xmlReader.Value);
    						}
    					}
    					else if ((xmlReader.Name == "cic") & xmlReader.IsStartElement())
    					{
    						if (xmlReader.MoveToAttribute("type"))
    						{
    							nesCartDatabaseCartridgeInfo.CIC_type = xmlReader.Value;
    						}
    					}
    					else if ((xmlReader.Name == "pad") & xmlReader.IsStartElement())
    					{
    						if (xmlReader.MoveToAttribute("h"))
    						{
    							nesCartDatabaseCartridgeInfo.PAD_h = xmlReader.Value;
    						}
    						if (xmlReader.MoveToAttribute("v"))
    						{
    							nesCartDatabaseCartridgeInfo.PAD_v = xmlReader.Value;
    						}
    					}
    				}
    			}
    		}
    		Ready = true;
    		success = true;
    		xmlReader.Close();
    		stream.Close();
    	}

    	public static NesCartDatabaseGameInfo Find(string Cart_sha1, out bool found)
    	{
    		found = false;
    		foreach (NesCartDatabaseGameInfo databaseRom in _databaseRoms)
    		{
    			foreach (NesCartDatabaseCartridgeInfo cartridge in databaseRom.Cartridges)
    			{
    				if (cartridge.SHA1.ToLower() == Cart_sha1.ToLower())
    				{
    					found = true;
    					return databaseRom;
    				}
    			}
    		}
    		return default(NesCartDatabaseGameInfo);
    	}
    }
}