using System;
using System.Collections.Generic;
using Mono.Data.Sqlite;
using System.IO;
using System.IO.Compression;
using System.Xml;
using System.Xml.Linq;

using SabreTools.Helper;

namespace SabreTools
{
	/// <summary>
	/// Entry class for the DATabase application
	/// </summary>
	class DATabase
	{
		private static Logger logger;
		private static string _dbName = "DATabase.sqlite";
		//private static string _dbName = "SabreTools.sqlite";
		private static string _connectionString = "Data Source=" + _dbName + ";Version = 3;";

		/// <summary>
		/// Start menu or use supplied parameters
		/// </summary>
		/// <param name="args">String array representing command line parameters</param>
		public static void Main(string[] args)
		{
			// Perform initial setup and verification
			logger = new Logger(true, "database.log");
			logger.Start();
			DBTools.EnsureDatabase(_dbName, _connectionString);
			Remapping.CreateRemappings();
			Console.Clear();

			// Credits take precidence over all
			if ((new List<string>(args)).Contains("--credits"))
			{
				Build.Credits();
				logger.Close();
				return;
			}

			// If there's no arguments, show the menu
			if (args.Length == 0)
			{
				ShowMainMenu();
				logger.Close();
				return;
			}

			// Set all default values
			bool help = false,
				add = false,
				bare = false,
				convertMiss = false,
				convertCMP = false,
				convertRC = false,
				convertXml = false,
				dedup = false,
				diff = false,
				gamename = false,
				disableForce = false,
				extsplit = false,
				forceunpack = false,
				generate = false,
				genall = false,
				import = false,
				listsrc = false,
				listsys = false,
				merge = false,
				norename = false,
				old = false,
				quotes = false,
				rem = false,
				trim = false,
				skip = false,
				usegame = true;
			string addext = "",
				author = "",
				cat = "",
				desc = "",
				exta = "",
				extb = "",
				name = "",
				manu = "",
				outdir = "",
				postfix = "",
				prefix = "",
				repext = "",
				sources = "",
				systems = "",
				root = "",
				url = "",
				version = "";
			List<string> inputs = new List<string>();

			// Determine which switches are enabled (with values if necessary)
			foreach (string arg in args)
			{
				switch (arg)
				{
					case "-?":
					case "-h":
					case "--help":
						help = true;
						break;
					case "-a":
					case "--add":
						add = true;
						break;
					case "-b":
					case "--bare":
						bare = true;
						break;
					case "-cc":
					case "--convert-cmp":
						convertCMP = true;
						break;
					case "-cm":
					case "--convert-miss":
						convertMiss = true;
						break;
					case "-cr":
					case "--convert-rc":
						convertRC = true;
						break;
					case "-cx":
					case "--convert-xml":
						convertXml = true;
						break;
					case "-dd":
					case "--dedup":
						dedup = true;
						break;
					case "-df":
					case "--disable-force":
						disableForce = true;
						break;
					case "-di":
					case "--diff":
						diff = true;
						break;
					case "-es":
					case "--ext-split":
						extsplit = true;
						break;
					case "-g":
					case "--generate":
						generate = true;
						break;
					case "-ga":
					case "--generate-all":
						genall = true;
						break;
					case "-gp":
					case "--game-prefix":
						gamename = true;
						break;
					case "-i":
					case "--import":
						import = true;
						break;
					case "-lso":
					case "--list-sources":
						listsrc = true;
						break;
					case "-lsy":
					case "--list-systems":
						listsys = true;
						break;
					case "-m":
					case "--merge":
						merge = true;
						break;
					case "-nr":
					case "--no-rename":
						norename = true;
						break;
					case "-o":
					case "--old":
						old = true;
						break;
					case "-q":
					case "--quotes":
						quotes = true;
						break;
					case "-r":
					case "--roms":
						usegame = false;
						break;
					case "-rm":
					case "--remove":
						rem = true;
						break;
					case "--skip":
						skip = true;
						break;
					case "-tm":
					case "--trim-merge":
						trim = true;
						break;
					case "-u":
					case "--unzip":
						forceunpack = true;
						break;
					default:
						if (arg.StartsWith("-ae=") || arg.StartsWith("--add-ext="))
						{
							addext = arg.Split('=')[1];
						}
						else if (arg.StartsWith("-au=") || arg.StartsWith("--author="))
						{
							author = arg.Split('=')[1];
						}
						else if (arg.StartsWith("-c=") || arg.StartsWith("--cat="))
						{
							cat = arg.Split('=')[1];
						}
						else if (arg.StartsWith("-d=") || arg.StartsWith("--desc="))
						{
							desc = arg.Split('=')[1];
						}
						else if (arg.StartsWith("-exta="))
						{
							exta = arg.Split('=')[1];
						}
						else if (arg.StartsWith("-extb="))
						{
							extb = arg.Split('=')[1];
						}
						else if (arg.StartsWith("-input="))
						{
							inputs.Add(arg.Split('=')[1].Replace("\"", ""));
						}
						else if (arg.StartsWith("-manu=") && manu == "")
						{
							manu = arg.Split('=')[1];
						}
						else if (arg.StartsWith("-n=") || arg.StartsWith("--name="))
						{
							name = arg.Split('=')[1];
						}
						else if (arg.StartsWith("-out=") && outdir == "")
						{
							outdir = arg.Split('=')[1];
						}
						else if (arg.StartsWith("-post=") || arg.StartsWith("--postfix="))
						{
							postfix = arg.Split('=')[1];
						}
						else if (arg.StartsWith("-pre=") || arg.StartsWith("--prefix="))
						{
							prefix = arg.Split('=')[1];
						}
						else if (arg.StartsWith("-source=") && sources == "")
						{
							sources = arg.Split('=')[1];
						}
						else if (arg.StartsWith("-system=") && systems == "")
						{
							systems = arg.Split('=')[1];
						}
						else if (arg.StartsWith("-rd=") || arg.StartsWith("--root-dir="))
						{
							root = arg.Split('=')[1];
						}
						else if (arg.StartsWith("-re=") || arg.StartsWith("--rep-ext="))
						{
							repext = arg.Split('=')[1];
						}
						else if (arg.StartsWith("-url=") && url == "")
						{
							url = arg.Split('=')[1];
						}
						else if (arg.StartsWith("-v=") || arg.StartsWith("--version="))
						{
							version = arg.Split('=')[1];
						}
						else if (File.Exists(arg.Replace("\"", "")) || Directory.Exists(arg.Replace("\"", "")))
						{
							inputs.Add(arg);
						}
						else
						{
							logger.Warning("Invalid input detected: " + arg);
							Console.WriteLine();
							Build.Help();
							logger.Close();
							return;
						}
						break;
				}
			}

			// If skip is set, it's being called from the UI so we just exit
			if (skip)
			{
				return;
			}

			// If more than one switch is enabled or help is set, show the help screen
			if (help || !(add ^ convertMiss ^ convertCMP ^ convertRC ^ convertXml ^ extsplit ^ generate ^ genall ^
				import ^ listsrc ^ listsys ^ (merge || diff) ^ rem ^ trim))
			{
				Build.Help();
				logger.Close();
				return;
			}

			// If a switch that requires a filename is set and no file is, show the help screen
			if (inputs.Count == 0 && (convertMiss || convertCMP || convertRC || convertXml || extsplit || import || (merge || diff) || trim))
			{
				Build.Help();
				logger.Close();
				return;
			}

			// Now take care of each mode in succesion

			// Import a file or folder
			if (import)
			{
				foreach (string input in inputs)
				{
					InitImport(input);
				}
			}

			// Generate a DAT
			else if (generate)
			{
				InitGenerate(systems, sources, outdir, norename, old);
			}

			// Generate all DATs
			else if (genall)
			{
				InitGenerateAll(outdir, norename, old);
			}

			// List all available sources
			else if (listsrc)
			{
				ListSources();
			}

			// List all available systems
			else if (listsys)
			{
				ListSystems();
			}

			// Convert DAT to missfile
			else if (convertMiss)
			{
				foreach (string input in inputs)
				{
					InitConvertMiss(input, usegame, prefix, postfix, quotes, repext, addext, gamename);
				}
			}

			// Convert any DAT to CMP DAT
			else if (convertCMP)
			{
				foreach (string input in inputs)
				{
					InitConvertCMP(input);
				}
			}

			// Convert any DAT to RC DAT
			else if (convertRC)
			{
				foreach (string input in inputs)
				{
					InitConvertRC(input);
				}
			}

			// Convert any DAT to XML DAT
			else if (convertXml)
			{
				foreach (string input in inputs)
				{
					InitConvertXML(input);
				}
			}

			// Add a source or system
			else if (add)
			{
				if (manu != "" && systems != "")
				{
					InitAddSystem(manu, systems);
				}
				else if (sources != "" && url != "")
				{
					InitAddSource(manu, systems);
				}
				else
				{
					Build.Help();
				}
			} 
			
			// Remove a source or system
			else if (rem)
			{
				if (systems != "")
				{
					InitRemoveSystem(systems);
				}
				else if (sources != "")
				{
					InitRemoveSource(sources);
				}
				else
				{
					Build.Help();
				}
			}

			// Consolodate and trim DAT
			else if (trim)
			{
				foreach (string input in inputs)
				{
					InitTrimMerge(input, root, !norename, !disableForce);
				}
			}

			// Split a DAT by extension
			else if (extsplit)
			{
				foreach (string input in inputs)
				{
					InitExtSplit(input, exta, extb, outdir);
				}
			}

			// Merge, diff, and dedupe at least 2 DATs
			else if (merge || diff)
			{
				InitMergeDiff(inputs, name, desc, cat, version, author, diff, dedup, bare, forceunpack, old);
			}

			logger.Close();
			return;
		}

		#region Menus

		/// <summary>
		/// Show the text-based main menu
		/// </summary>
		private static void ShowMainMenu()
		{
			Console.Clear();
			string selection = "";
			while (selection.ToLowerInvariant() != "x")
			{
				Console.Clear();
				Build.Start("DATabase");
				Console.WriteLine(@"MAIN MENU
===========================
Make a selection:

    1) Show command line usage
    2) Import a DAT file or folder
    3) Generate DAT files
    4) DAT file tools
    5) List all available sources
    6) List all available systems
    7) Add and remove systems and sources
    8) Show credits
    X) Exit Program
");
				Console.Write("Enter selection: ");
				selection = Console.ReadLine();

				switch (selection)
				{
					case "1":
						Console.Clear();
						Build.Help();
						Console.Write("\nPress any key to continue...");
						Console.ReadKey();
						break;
					case "2":
						ImportMenu();
						break;
					case "3":
						GenerateMenu();
						break;
					case "4":
						DatToolsMenu();
						break;
					case "5":
						Console.Clear();
						Build.Start("DATabase");
						ListSources();
						Console.Write("\nPress any key to continue...");
						Console.ReadKey();
						break;
					case "6":
						Console.Clear();
						Build.Start("DATabase");
						ListSystems();
						Console.Write("\nPress any key to continue...");
						Console.ReadKey();
						break;
					case "7":
						AddRemoveMenu();
						break;
					case "8":
						Console.Clear();
						Build.Credits();
						Console.Write("\nPress any key to continue...");
						Console.ReadKey();
						break;
				}
			}
			Console.Clear();
			Console.WriteLine("Thank you for using DATabase!");
		}

		/// <summary>
		/// Show the text-based import menu
		/// </summary>
		private static void ImportMenu()
		{
			string selection = "";
			while (selection.ToLowerInvariant() != "b")
			{
				Console.Clear();
				Build.Start("DATabase");
				Console.WriteLine(@"IMPORT MENU
===========================
Enter the name of a DAT file or folder containing DAT files
or 'b' to go back to the previous menu:");
				Console.Write("Enter selection: ");
				selection = Console.ReadLine();
				if (selection.ToLowerInvariant() != "b")
				{
					InitImport(selection);
					Console.Write("\nPress any key to continue...");
					Console.ReadKey();
				}
			}
			return;
		}

		/// <summary>
		/// Show the text-based generate menu
		/// </summary>
		private static void GenerateMenu()
		{
			string selection = "", systems = "", sources = "", outdir = "";
			bool norename = false, old = false;
			while (selection.ToLowerInvariant() != "b")
			{
				Console.Clear();
				Build.Start("DATabase");
				Console.WriteLine(@"GENERATE MENU
===========================
Make a selection:

    1) " + (norename ? "Enable game renaming" : "Disable game renaming") + @"
    2) " + (old ? "Enable XML output" : "Enable ClrMamePro output") + @"
    3) List of systems to generate from" + (systems != "" ? ": " + systems : "") + @"
    4) List of sources to generate from" + (sources != "" ? ": " + sources : "") + @"
    5) Enter an output folder" + (outdir != "" ? ":\n\t" + outdir : "") + @"
    6) Generate the DAT file
    7) Generate all available DAT files
    B) Go back to the previous menu
");
				Console.Write("Enter selection: ");
				selection = Console.ReadLine();
				switch (selection)
				{
					case "1":
						norename = !norename;
						break;
					case "2":
						old = !old;
						break;
					case "3":
						Console.Clear();
						ListSystems();
						Console.Write("Please enter the systems separated by commas: ");
						systems = Console.ReadLine();
						break;
					case "4":
						Console.Clear();
						ListSources();
						Console.Write("Please enter the sources separated by commas: ");
						sources = Console.ReadLine();
						break;
					case "5":
						Console.Clear();
						Console.Write("Please enter a folder name: ");
						outdir = Console.ReadLine();
						break;
					case "6":
						Console.Clear();
						InitGenerate(systems, sources, outdir, norename, old);
						Console.Write("\nPress any key to continue...");
						Console.ReadKey();
						systems = ""; sources = ""; outdir = "";
						norename = false; old = false;
						break;
					case "7":
						Console.Clear();
						InitGenerateAll(outdir, norename, old);
						Console.Write("\nPress any key to continue...");
						Console.ReadKey();
						systems = ""; sources = ""; outdir = "";
						norename = false; old = false;
						break;
				}
			}
			return;
		}

		/// <summary>
		/// Show the text-based DAT tools menu
		/// </summary>
		/// <remarks>
		/// At an unspecified future date, this will also include the following currently-separate programs:
		/// - DATFromDir
		/// </remarks>
		private static void DatToolsMenu()
		{
			string selection = "";
			while (selection.ToLowerInvariant() != "b")
			{
				Console.Clear();
				Build.Start("DATabase");
				Console.WriteLine(@"DAT TOOLS MENU
===========================
Make a selection:

    1) Convert DAT to ClrMamePro
    2) Convert DAT to RomCenter
    3) Convert DAT to XML
    4) Convert DAT to missfile
    5) Trim all entries in DAT and merge into a single game
    6) Merge, diff, and/or dedup 2 or more DAT files
    7) Split DAT using 2 extensions
    B) Go back to the previous menu
");
				Console.Write("Enter selection: ");
				selection = Console.ReadLine();
				switch (selection)
				{
					case "1":
						ConvertCMPMenu();
						break;
					case "2":
						ConvertRCMenu();
						break;
					case "3":
						ConvertXMLMenu();
						break;
					case "4":
						ConvertMissMenu();
						break;
					case "5":
						TrimMergeMenu();
						break;
					case "6":
						MergeDiffMenu();
						break;
					case "7":
						ExtSplitMenu();
						break;
				}
			}
		}

		/// <summary>
		/// Show the text-based any to CMP conversion menu
		/// </summary>
		private static void ConvertCMPMenu()
		{
			string selection = "";
			while (selection.ToLowerInvariant() != "b")
			{
				Console.Clear();
				Build.Start("DATabase");
				Console.WriteLine(@"ANY -> CMP CONVERT MENU
===========================
Enter the name of a DAT file to convert to CMP
or 'b' to go back to the previous menu:
");
				selection = Console.ReadLine();
				if (selection.ToLowerInvariant() != "b")
				{
					Console.Clear();
					InitConvertCMP(selection);
					Console.Write("\nPress any key to continue...");
					Console.ReadKey();
				}
			}
			return;
		}

		/// <summary>
		/// Show the text-based any to RomCenter conversion menu
		/// </summary>
		private static void ConvertRCMenu()
		{
			string selection = "";
			while (selection.ToLowerInvariant() != "b")
			{
				Console.Clear();
				Build.Start("DATabase");
				Console.WriteLine(@"ANY -> RC CONVERT MENU
===========================
Enter the name of a DAT file to convert to RomCenter
or 'b' to go back to the previous menu:
");
				selection = Console.ReadLine();
				if (selection.ToLowerInvariant() != "b")
				{
					Console.Clear();
					InitConvertRC(selection);
					Console.Write("\nPress any key to continue...");
					Console.ReadKey();
				}
			}
			return;
		}

		/// <summary>
		/// Show the text-based CMP to XML conversion menu
		/// </summary>
		private static void ConvertXMLMenu()
		{
			string selection = "";
			while (selection.ToLowerInvariant() != "b")
			{
				Console.Clear();
				Build.Start("DATabase");
				Console.WriteLine(@"ANY -> XML CONVERT MENU
===========================
Enter the name of a DAT file to convert to XML
or 'b' to go back to the previous menu:
");
				selection = Console.ReadLine();
				if (selection.ToLowerInvariant() != "b")
				{
					Console.Clear();
					InitConvertXML(selection);
					Console.Write("\nPress any key to continue...");
					Console.ReadKey();
				}
			}
			return;
		}

		/// <summary>
		/// Show the text-based DAT to missfile conversion menu
		/// </summary>
		private static void ConvertMissMenu()
		{
			string selection = "", input = "", prefix = "", postfix = "", addext = "", repext = "";
			bool usegame = true, quotes = false, gamename = false, romba = false;
			while (selection.ToLowerInvariant() != "b")
			{
				Console.Clear();
				Build.Start("DATabase");
				Console.WriteLine(@"DAT -> MISS CONVERT MENU
===========================
Make a selection:

    1) File to convert" + (input != "" ? ":\n\t" + input : "") + @"
    2) " + (usegame ? "Output roms instead of games" : "Output games instead of roms") + @"
    3) " + (romba ? "Disable Romba-style output naming" : "Enable Romba-style output naming (overrides previous)") + @"
    4) Prefix to add to each line" + (prefix != "" ? ":\n\t" + prefix : "") + @"
    5) Postfix to add to each line" + (postfix != "" ? ":\n\t" + postfix : "") + @"
    6) " + (quotes ? "Don't add quotes around each item" : "Add quotes around each item") + @"
    7) Replace all extensions with another" + (repext != "" ? ":\t" + repext : "") + @"
    8) Add extensions to each item" + (addext != "" ? ":\n\t" + addext : "") + @"
" + (!usegame ? "    9) " + (gamename ? "Don't add game name before every item" : "Add game name before every item") + "\n" : "") +
@"    10) Begin conversion
    B) Go back to the previous menu
");
				Console.Write("Enter selection: ");
				selection = Console.ReadLine();
				switch (selection)
				{
					case "1":
						Console.Clear();
						Console.Write("Please enter the file name: ");
						input = Console.ReadLine();
						break;
					case "2":
						usegame = !usegame;
						break;
					case "3":
						romba = !romba;
						break;
					case "4":
						Console.Clear();
						Console.Write("Please enter the prefix: ");
						prefix = Console.ReadLine();
						break;
					case "5":
						Console.Clear();
						Console.Write("Please enter the postfix: ");
						postfix = Console.ReadLine();
						break;
					case "6":
						quotes = !quotes;
						break;
					case "7":
						Console.Clear();
						Console.Write("Please enter the replacement extension: ");
						repext = Console.ReadLine();
						break;
					case "8":
						Console.Clear();
						Console.Write("Please enter the additional extension: ");
						addext = Console.ReadLine();
						break;
					case "9":
						gamename = !gamename;
						break;
					case "10":
						Console.Clear();
						InitConvertMiss(input, usegame, prefix, postfix, quotes, repext, addext, gamename);
						Console.Write("\nPress any key to continue...");
						Console.ReadKey();
						input = ""; prefix = ""; postfix = ""; addext = ""; repext = "";
						usegame = true; quotes = false; gamename = false;
						break;
				}
			}
		}

		/// <summary>
		/// Show the text-based TrimMerge menu
		/// </summary>
		private static void TrimMergeMenu()
		{
			string selection = "", input = "", root = "";
			bool forceunpack = true, rename = true;
			while (selection.ToLowerInvariant() != "b")
			{
				Console.Clear();
				Build.Start("DATabase");
				Console.WriteLine(@"DAT TRIM MENU
===========================
Make a selection:

    1) File or folder to process" + (input != "" ? ":\n\t" + input : "") + @"
    2) Set the root directory for trimming calculation" + (root != "" ? ":\n\t" + root : "") + @"
    3) " + (forceunpack ? "Remove 'forcepacking=\"unzip\"' from output" : "Add 'forcepacking=\"unzip\"' to output") + @"
    4) " + (rename ? "Keep all game names" : "Rename all games to '!'") + @"
    5) Process the file or folder
    B) Go back to the previous menu
");
				Console.Write("Enter selection: ");
				selection = Console.ReadLine();
				switch (selection)
				{
					case "1":
						Console.Clear();
						Console.Write("Please enter the file or folder name: ");
						input = Console.ReadLine();
						break;
					case "2":
						Console.Clear();
						Console.Write("Please enter the root folder name: ");
						root = Console.ReadLine();
						break;
					case "3":
						forceunpack = !forceunpack;
						break;
					case "4":
						rename = !rename;
						break;
					case "5":
						Console.Clear();
						InitTrimMerge(input, root, rename, forceunpack);
						Console.Write("\nPress any key to continue...");
						Console.ReadKey();
						selection = ""; input = ""; root = "";
						forceunpack = true; rename = true;
						break;
				}
			}
		}

		/// <summary>
		/// Show the text-based MergeDiff menu
		/// </summary>
		private static void MergeDiffMenu()
		{
			string selection = "", input = "", name = "", desc = "", cat = "", version = "", author = "";
			bool dedup = false, diff = false, bare = false, forceunpack = false, old = false;
			while (selection.ToLowerInvariant() != "b")
			{
				Console.Clear();
				Build.Start("DATabase");
				Console.WriteLine(@"MERGE AND DIFF MENU
===========================
Make a selection:

    1) Add a file or folder to process
    2) Internal DAT name" + (name != "" ? ":\t" + name : "") + @"
    3) External DAT name/description" + (desc != "" ? ":\t" + desc : "") + @"
    4) Category" + (cat != "" ? ":\t" + cat : "") + @"
    5) Version" + (version != "" ? ":\t" + version : "") + @"
    6) Author" + (author != "" ? ":\t" + author : "") + @"
    7) " + (dedup ? "Don't dedup files in output" : "Dedup files in output") + @"
    8) " + (diff ? "Only merge the input files" : "Diff the input files") + @"
    9) " + (bare ? "Don't append the date to the name" : "Append the date to the name") + @"
    10) " + (forceunpack ? "Remove 'forcepacking=\"unzip\"' from output" : "Add 'forcepacking=\"unzip\"' to output") + @"
    11) " + (old ? "Enable XML output" : "Enable ClrMamePro output") + @"
    12) Merge the DATs
    B) Go back to the previous menu
");
				Console.Write("Enter selection: ");
				selection = Console.ReadLine();
				switch (selection)
				{
					case "1":
						Console.Clear();
						Console.Write("Please enter a file or folder name: ");
						input += (input == "" ? "" : ";") + Console.ReadLine();
						break;
					case "2":
						Console.Clear();
						Console.Write("Please enter a name: ");
						name = Console.ReadLine();
						break;
					case "3":
						Console.Clear();
						Console.Write("Please enter a description: ");
						desc = Console.ReadLine();
						break;
					case "4":
						Console.Clear();
						Console.Write("Please enter a category: ");
						cat = Console.ReadLine();
						break;
					case "5":
						Console.Clear();
						Console.Write("Please enter a version: ");
						version = Console.ReadLine();
						break;
					case "6":
						Console.Clear();
						Console.Write("Please enter an author: ");
						author = Console.ReadLine();
						break;
					case "7":
						dedup = !dedup;
						break;
					case "8":
						diff = !diff;
						break;
					case "9":
						bare = !bare;
						break;
					case "10":
						forceunpack = !forceunpack;
						break;
					case "11":
						old = !old;
						break;
					case "12":
						Console.Clear();
						List<string> inputs = new List<string>(input.Split(';'));
						InitMergeDiff(inputs, name, desc, cat, version, author, diff, dedup, bare, forceunpack, old);
						Console.Write("\nPress any key to continue...");
						Console.ReadKey();
						selection = ""; input = ""; name = ""; desc = ""; cat = ""; version = ""; author = "";
						dedup = false; diff = false; bare = false; forceunpack = false; old = false;
						break;
				}
			}
		}

		/// <summary>
		/// Show the text-based ExtSplit menu
		/// </summary>
		private static void ExtSplitMenu()
		{
			string selection = "", input = "", exta = "", extb = "", outdir = "";
			while (selection.ToLowerInvariant() != "b")
			{
				Console.Clear();
				Build.Start("DATabase");
				Console.WriteLine(@"EXTENSION SPLIT MENU
===========================
Make a selection:

    1) File to split" + (input != "" ? ":\n\t" + input : "") + @"
    2) First file extension" + (exta != "" ? ":\t" + exta : "") + @"
    3) Second file extension" + (extb != "" ? ":\t" + extb : "") + @"
    4) Output directory" + (outdir != "" ? ":\n\t" + outdir : "") + @"
    5) Split the file
    B) Go back to the previous menu
");
				Console.Write("Enter selection: ");
				selection = Console.ReadLine();
				switch (selection)
				{
					case "1":
						Console.Clear();
						Console.Write("Please enter the file name: ");
						input = Console.ReadLine();
						break;
					case "2":
						Console.Clear();
						Console.Write("Please enter the first extension: ");
						exta = Console.ReadLine();
						break;
					case "3":
						Console.Clear();
						Console.Write("Please enter the second extension: ");
						extb = Console.ReadLine();
						break;
					case "4":
						Console.Clear();
						Console.Write("Please enter the output directory: ");
						exta = Console.ReadLine();
						break;
					case "5":
						Console.Clear();
						InitExtSplit(input, exta, extb, outdir);
						Console.Write("\nPress any key to continue...");
						Console.ReadKey();
						input = ""; exta = ""; extb = ""; outdir = "";
						break;
				}
			}
		}

		/// <summary>
		/// Show the text-based add and remove menu
		/// </summary>
		private static void AddRemoveMenu()
		{
			string selection = "", manufacturer = "", system = "", name = "", url = "";
			while (selection.ToLowerInvariant() != "b")
			{
				Console.Clear();
				Build.Start("DATabase");
				Console.WriteLine(@"ADD AND REMOVE MENU
===========================
Make a selection:

    1) Add a source
    2) Remove a source
    3) Add a system
    4) Remove a system
    B) Go back to the previous menu
");
				Console.Write("Enter selection: ");
				selection = Console.ReadLine();
				switch (selection)
				{
					case "1":
						Console.Clear();
						Console.Write("Please enter the source name: ");
						name = Console.ReadLine();
						Console.Write("\nPlease enter the source URL: ");
						url = Console.ReadLine();
						InitAddSource(name, url);
						Console.Write("\nPress any key to continue...");
						Console.ReadKey();
						manufacturer = ""; system = ""; name = ""; url = "";
						break;
					case "2":
						Console.Clear();
						ListSources(true);
						Console.Write("Please enter the source: ");
						InitRemoveSource(Console.ReadLine());
						Console.Write("\nPress any key to continue...");
						Console.ReadKey();
						manufacturer = ""; system = ""; name = ""; url = "";
						break;
					case "3":
						Console.Clear();
						Console.Write("Please enter the manufacturer: ");
						manufacturer = Console.ReadLine();
						Console.Write("\nPlease enter the system: ");
						system = Console.ReadLine();
						InitAddSystem(manufacturer, system);
						Console.Write("\nPress any key to continue...");
						Console.ReadKey();
						manufacturer = ""; system = ""; name = ""; url = "";
						break;
					case "4":
						Console.Clear();
						ListSystems(true);
						Console.Write("Please enter the system: ");
						InitRemoveSystem(Console.ReadLine());
						Console.Write("\nPress any key to continue...");
						Console.ReadKey();
						manufacturer = ""; system = ""; name = ""; url = "";
						break;
				}
			}
			return;
		}

		#endregion

		#region Init Methods

		/// <summary>
		/// Wrap importing a file or folder into the database
		/// </summary>
		/// <param name="filename">File or folder to be imported</param>
		private static void InitImport(string filename)
		{
			Console.Clear();

			// Drag and drop means quotes; we don't want quotes
			filename = filename.Replace("\"", "");

			// Check to see if the second argument is a file that exists
			if (filename != "" && File.Exists(filename))
			{
				logger.User("Beginning import of " + filename);
				Import imp = new Import(filename, _connectionString, logger);
				bool success = imp.ImportData();
				logger.User(filename + (success ? "" : " not") + " imported!");
			}
			// Check to see if the second argument is a directory that exists
			else if (filename != "" && Directory.Exists(filename))
			{
				foreach (string file in Directory.GetFiles(filename, "*", SearchOption.AllDirectories))
				{
					logger.User("Beginning import of " + file);
					Import imp = new Import(file, _connectionString, logger);
					bool success = imp.ImportData();
					logger.User(file + (success ? "" : " not") + " imported!");
				}
			}
			else
			{
				logger.Error("I'm sorry but " + filename + " doesn't exist!");
			}
			return;
		}

		/// <summary>
		/// Wrap generating a DAT from the database
		/// </summary>
		/// <param name="systems">Comma-separated list of systems to be included in the DAT (blank means all)</param>
		/// <param name="sources">Comma-separated list of sources to be included in the DAT (blank means all)</param>
		/// <param name="norename">True if files should not be renamed with system and/or source in merged mode (default false)</param>
		/// <param name="old">True if the output file should be in ClrMamePro format (default false)</param>
		private static void InitGenerate(string systems, string sources, string outdir, bool norename, bool old)
		{
			Generate gen = new Generate(systems, sources, outdir, _connectionString, logger, norename, old);
			gen.Export();
			return;
		}

		/// <summary>
		/// Wrap generating all standard DATs from the database
		/// </summary>
		/// <param name="norename">True if files should not be renamed with system and/or source in merged mode (default false)</param>
		/// <param name="old">True if the output file should be in ClrMamePro format (default false)</param>
		private static void InitGenerateAll(string outdir, bool norename, bool old)
		{
			string actualdir = (outdir == "" ? Environment.CurrentDirectory + Path.DirectorySeparatorChar :
				(!outdir.EndsWith(Path.DirectorySeparatorChar.ToString()) ? outdir + Path.DirectorySeparatorChar : outdir));
			outdir = actualdir + "temp" + Path.DirectorySeparatorChar;

			// Generate system-merged
			string query = "SELECT DISTINCT systems.id FROM systems JOIN games ON systems.id=games.system ORDER BY systems.manufacturer, systems.system";
			//string query = "SELECT DISTINCT system.id FROM system JOIN gamesystem ON system.id=gamesystem.systemid ORDER BY system.manufacturer, system.name";
			using (SqliteConnection dbc = new SqliteConnection(_connectionString))
			{
				dbc.Open();
				using (SqliteCommand slc = new SqliteCommand(query, dbc))
				{
					using (SqliteDataReader sldr = slc.ExecuteReader())
					{
						// If nothing is found, tell the user and exit
						if (!sldr.HasRows)
						{
							logger.Error("No systems found! Please add a source and then try again.");
							return;
						}

						while (sldr.Read())
						{
							InitGenerate(sldr.GetInt32(0).ToString(), "", outdir, norename, old);

							// Generate custom
							string squery = @"SELECT DISTINCT sources.id
		FROM systems
		JOIN games
			ON systems.id=games.system
		JOIN sources
			ON games.source=sources.id
		WHERE systems.id=" + sldr.GetInt32(0).ToString() + @"
		ORDER BY sources.name";
							/*
							string squery = @"SELECT DISTINCT source.id
		FROM system
		JOIN gamesystem
			ON system.id=gamesystem.systemid
		JOIN gamesource
			ON gamesystem.game=gamesource.game
		JOIN source
			ON gamesource.sourceid=source.id
		WHERE system.id=" + sldr.GetInt32(0).ToString() + @"
		ORDER BY source.name";
							*/

							using (SqliteCommand sslc = new SqliteCommand(squery, dbc))
							{
								using (SqliteDataReader ssldr = sslc.ExecuteReader())
								{
									// If nothing is found, tell the user and exit
									if (!ssldr.HasRows)
									{
										logger.Error("No sources found! Please add a source and then try again.");
										return;
									}

									while (ssldr.Read())
									{
										InitGenerate(sldr.GetInt32(0).ToString(), ssldr.GetInt32(0).ToString(), outdir, norename, old);
									}
								}
							}
						}
					}
				}

				// Generate source-merged
				query = "SELECT DISTINCT sources.id, sources.name FROM sources JOIN games ON sources.id=games.source ORDER BY sources.name";
				//query = "SELECT DISTINCT source.id, source.name FROM source JOIN gamesource ON source.id=gamesource.sourceid ORDER BY source.name";

				using (SqliteCommand slc = new SqliteCommand(query, dbc))
				{
					using (SqliteDataReader sldr = slc.ExecuteReader())
					{
						// If nothing is found, tell the user and exit
						if (!sldr.HasRows)
						{
							logger.Error("No sources found! Please add a source and then try again.");
							return;
						}

						while (sldr.Read())
						{
							InitGenerate("", sldr.GetInt32(0).ToString(), outdir, norename, old);
						}
					}
				}
			}

			// Generate MEGAMERGED
			InitGenerate("", "", outdir, norename, old);

			// Zip up all of the files that were generated
			logger.User("Creating zip archive");
			ZipArchive zip = ZipFile.Open(actualdir + "dats-" + DateTime.Now.ToString("yyyyMMddHHmmss") + ".zip", ZipArchiveMode.Create);
			foreach (String filename in Directory.EnumerateFiles(outdir))
			{
				if (filename.EndsWith(".xml") || filename.EndsWith(".dat"))
				{
					string internalFolder = (filename.Contains("ALL (Merged") ? "" :
						filename.Contains("Merged") ? "merged-system/" :
							filename.Contains("ALL") ? "merged-source/" : "custom/");
					zip.CreateEntryFromFile(filename, internalFolder + Path.GetFileName(filename), CompressionLevel.Optimal);
				}
			}
			zip.Dispose();
			logger.User("Zip archive created!");

			// Remove all of the DATs from the folder
			Directory.Delete(outdir, true);

			return;
		}

		/// <summary>
		/// Wrap converting DAT file from any format to ClrMamePro
		/// </summary>
		/// <param name="filename"></param>
		private static void InitConvertCMP(string filename)
		{
			if (File.Exists(filename))
			{
				logger.User("Converting " + filename);
				DatData datdata = new DatData
				{
					Name = "",
					Description = "",
					Category = "",
					Version = "",
					Date = "",
					Author = "",
					Email = "",
					Homepage = "",
					Url = "",
					Comment = "",
					OutputFormat = OutputFormat.ClrMamePro,
					Roms = new Dictionary<string, List<RomData>>(),
					MergeRoms = false,
				};

				datdata = RomManipulation.Parse(filename, 0, 0, datdata, logger);

				logger.User("datdata.Description: " + datdata.Description);

				datdata.Description += ".new";
				Output.WriteDatfile(datdata, Path.GetDirectoryName(filename), logger);
			}
			else
			{
				logger.Error("I'm sorry but " + filename + " doesn't exist!");
			}
			return;
		}

		/// <summary>
		/// Wrap converting DAT file from any format to RomCenter
		/// </summary>
		/// <param name="filename"></param>
		private static void InitConvertRC(string filename)
		{
			if (File.Exists(filename))
			{
				logger.User("Converting " + filename);
				DatData datdata = new DatData
				{
					Name = "",
					Description = "",
					Category = "",
					Version = "",
					Date = "",
					Author = "",
					Email = "",
					Homepage = "",
					Url = "",
					Comment = "",
					OutputFormat = OutputFormat.RomCenter,
					Roms = new Dictionary<string, List<RomData>>(),
					MergeRoms = false,
				};

				datdata = RomManipulation.Parse(filename, 0, 0, datdata, logger);

				logger.User("datdata.Description: " + datdata.Description);

				datdata.Description += ".new";
				Output.WriteDatfile(datdata, Path.GetDirectoryName(filename), logger);
			}
			else
			{
				logger.Error("I'm sorry but " + filename + " doesn't exist!");
			}
			return;
		}

		/// <summary>
		/// Wrap converting DAT file from any format to XML
		/// </summary>
		/// <param name="filename"></param>
		private static void InitConvertXML(string filename)
		{
			if (File.Exists(filename))
			{
				logger.User("Converting " + filename);
				DatData datdata = new DatData
				{
					Name = "",
					Description = "",
					Category = "",
					Version = "",
					Date = "",
					Author = "",
					Email = "",
					Homepage = "",
					Url = "",
					Comment = "",
					OutputFormat = OutputFormat.Xml,
					Roms = new Dictionary<string, List<RomData>>(),
					MergeRoms = false,
				};

				datdata = RomManipulation.Parse(filename, 0, 0, datdata, logger);

				logger.User("datdata.Description: " + datdata.Description);

				datdata.Description += ".new";
				Output.WriteDatfile(datdata, Path.GetDirectoryName(filename), logger);
			}
			else
			{
				logger.Error("I'm sorry but " + filename + " doesn't exist!");
			}
			return;
		}

		/// <summary>
		/// Wrap converting a DAT to missfile
		/// </summary>
		/// <param name="input">File to be converted</param>
		/// <param name="usegame">True if games are to be used in output, false if roms are</param>
		/// <param name="prefix">Generic prefix to be added to each line</param>
		/// <param name="postfix">Generic postfix to be added to each line</param>
		/// <param name="quotes">Add quotes to each item</param>
		/// <param name="repext">Replace all extensions with another</param>
		/// <param name="addext">Add an extension to all items</param>
		/// <param name="gamename">Add the dat name as a directory prefix</param>
		private static void InitConvertMiss(string input, bool usegame, string prefix, string postfix, bool quotes, string repext, string addext, bool gamename)
		{
			// Strip any quotations from the name
			input = input.Replace("\"", "");

			if (input != "" && File.Exists(input))
			{
				// Get the full input name
				input = Path.GetFullPath(input);

				// Get the output name
				string name = Path.GetFileNameWithoutExtension(input) + "-miss";

				// Read in the roms from the DAT and then write them to the file
				logger.User("Converting " + input);
				DatData datdata = new DatData
				{
					Name = "",
					Description = "",
					Category = "",
					Version = "",
					Date = "",
					Author = "",
					Email = "",
					Homepage = "",
					Url = "",
					Comment = "",
					Roms = new Dictionary<string, List<RomData>>(),
					OutputFormat = OutputFormat.MissFile,

					UseGame = usegame,
					Prefix = prefix,
					Postfix = postfix,
					AddExt = addext,
					RepExt = repext,
					Quotes = quotes,
					GameName = gamename,
				};
				datdata = RomManipulation.Parse(input, 0, 0, datdata, logger);
				datdata.Name += "-miss";
				datdata.Description += "-miss";

				// Normalize the extensions
				addext = (addext == "" || addext.StartsWith(".") ? addext : "." + addext);
				repext = (repext == "" || repext.StartsWith(".") ? repext : "." + repext);

				Output.WriteDatfile(datdata, Path.GetDirectoryName(input), logger);
				logger.User(input + " converted to: " + name);
				return;
			}
			else
			{
				logger.Error("I'm sorry but " + input + "doesn't exist!");
			}
		}

		/// <summary>
		/// Wrap trimming and merging a single DAT
		/// </summary>
		/// <param name="input">Input file or folder to be converted</param>
		/// <param name="root">Root directory to base path lengths on</param>
		/// <param name="rename">True is games should not be renamed</param>
		/// <param name="force">True if forcepacking="unzip" should be included</param>
		private static void InitTrimMerge(string input, string root, bool rename, bool force)
		{
			// Strip any quotations from the name
			input = input.Replace("\"", "");

			if (input != "" && (File.Exists(input) || Directory.Exists(input)))
			{
				TrimMerge sg = new TrimMerge(input, root, rename, force, logger);
				sg.Process();
				return;
			}
		}

		/// <summary>
		/// Wrap merging, diffing, and deduping 2 or mor DATs
		/// </summary>
		/// <param name="inputs">A List of Strings representing the DATs or DAT folders to be merged</param>
		/// <param name="name">Internal name of the DAT</param>
		/// <param name="desc">Description and external name of the DAT</param>
		/// <param name="cat">Category for the DAT</param>
		/// <param name="version">Version of the DAT</param>
		/// <param name="author">Author of the DAT</param>
		/// <param name="diff">True if a DiffDat of all inputs is wanted, false otherwise</param>
		/// <param name="dedup">True if the outputted file should remove duplicates, false otherwise</param>
		/// <param name="bare">True if the date should be omitted from the DAT, false otherwise</param>
		/// <param name="forceunpack">True if the forcepacking="unzip" tag is to be added, false otherwise</param>
		/// <param name="old">True if a old-style DAT should be output, false otherwise</param>
		private static void InitMergeDiff(List<string> inputs, string name, string desc, string cat, string version, string author, bool diff, bool dedup, bool bare, bool forceunpack, bool old)
		{
			// Make sure there are no folders in inputs
			List<string> newInputs = new List<string>();
			foreach (string input in inputs)
			{
				if (Directory.Exists(input.Replace("\"", "")))
				{
					foreach (string file in Directory.EnumerateFiles(input.Replace("\"", ""), "*", SearchOption.AllDirectories))
					{
						newInputs.Add(Path.GetFullPath(file));
					}
				}
				else if (File.Exists(input.Replace("\"", "")))
				{
					newInputs.Add(Path.GetFullPath(input.Replace("\"", "")));
				}
			}

			MergeDiff md = new MergeDiff(newInputs, name, desc, cat, version, author, diff, dedup, bare, forceunpack, old, logger);
			md.Process();
		}

		/// <summary>
		/// Wrap splitting a DAT by 2 extensions
		/// </summary>
		/// <param name="input">Input file or folder to be split</param>
		/// <param name="exta">First extension to split on</param>
		/// <param name="extb">Second extension to split on</param>
		/// <param name="outdir">Output directory for the split files</param>
		private static void InitExtSplit(string input, string exta, string extb, string outdir)
		{
			// Strip any quotations from the names
			input = input.Replace("\"", "");
			exta = exta.Replace("\"", "");
			extb = extb.Replace("\"", "");
			outdir = outdir.Replace("\"", "");

			if (input != "" && File.Exists(input))
			{
				if (exta == "" || extb == "")
				{
					logger.Warning("Two extensions are needed to split a DAT!");
					return;
				}
				ExtSplit es = new ExtSplit(input, exta, extb, outdir, logger);
				es.Split();
				return;
			}
			else
			{
				logger.Log("I'm sorry but " + input + "doesn't exist!");
			}
		}

		/// <summary>
		/// Wrap adding a new source to the database
		/// </summary>
		/// <param name="name">Source name</param>
		/// <param name="url">Source URL(s)</param>
		private static void InitAddSource(string name, string url)
		{
			if (DBTools.AddSource(name, url, _connectionString))
			{
				logger.Log("Source " + name + " added!");
			}
			else
			{
				logger.Error("Source " + name + " could not be added!");
			}
		}

		/// <summary>
		/// Wrap removing an existing source from the database
		/// </summary>
		/// <param name="id">Source ID to be removed from the database</param>
		private static void InitRemoveSource(string sourceid)
		{
			int srcid = -1;
			if (Int32.TryParse(sourceid, out srcid))
			{
				if (DBTools.RemoveSource(srcid, _connectionString))
				{
					logger.Log("Source '" + srcid + "' removed!");
				}
				else
				{
					logger.Error("Source with id '" + srcid + "' could not be removed.");
				}
			}
			else
			{
				logger.Error("Invalid input");
			}
		}

		/// <summary>
		/// Wrap adding a new system to the database
		/// </summary>
		/// <param name="manufacturer">Manufacturer name</param>
		/// <param name="system">System name</param>
		private static void InitAddSystem(string manufacturer, string system)
		{
			if (DBTools.AddSystem(manufacturer, system, _connectionString))
			{
				logger.Log("System " + manufacturer + " - " + system + " added!");
			}
			else
			{
				logger.Error("System " + manufacturer + " - " + system + " could not be added!");
			}
		}

		/// <summary>
		/// Wrap removing an existing system from the database
		/// </summary>
		/// <param name="id">System ID to be removed from the database</param>
		private static void InitRemoveSystem(string systemid)
		{
			int sysid = -1;
			if (Int32.TryParse(systemid, out sysid))
			{
				if (DBTools.RemoveSystem(sysid, _connectionString))
				{
					logger.Log("System '" + sysid + "' removed!");
				}
				else
				{
					logger.Error("System with id '" + sysid + "' could not be removed.");
				}
			}
			else
			{
				logger.Error("Invalid input");
			}
		}

		#endregion

		#region Listing Methods

		/// <summary>
		/// List sources in the database
		/// </summary>
		/// <param name="all">True to list all sources regardless if there is a game associated or not</param>
		private static void ListSources(bool all = false)
		{
			string query = @"
SELECT DISTINCT sources.id, sources.name
FROM sources " + (!all ? "JOIN games on sources.id=games.source" : "") + @"
ORDER BY sources.name COLLATE NOCASE";
			using (SqliteConnection dbc = new SqliteConnection(_connectionString))
			{
				dbc.Open();
				using (SqliteCommand slc = new SqliteCommand(query, dbc))
				{
					using (SqliteDataReader sldr = slc.ExecuteReader())
					{
						// If nothing is found, tell the user and exit
						if (!sldr.HasRows)
						{
							logger.Warning("No sources found! Please add a source and then try again.");
							return;
						}

						Console.WriteLine("Available Sources (id <= name):\n");
						while (sldr.Read())
						{
							Console.WriteLine(sldr.GetInt32(0) + "\t<=\t" + sldr.GetString(1));
						}
					}
				}
			}
			return;
		}

		/// <summary>
		/// List systems in the database
		/// </summary>
		/// <param name="all">True to list all systems regardless if there is a game associated or not</param>
		private static void ListSystems(bool all = false)
		{
			string query = @"
SELECT DISTINCT systems.id, systems.manufacturer, systems.system
FROM systems " + (!all ? "JOIN games ON systems.id=games.system" : "") + @"
ORDER BY systems.manufacturer, systems.system";
			using (SqliteConnection dbc = new SqliteConnection(_connectionString))
			{
				dbc.Open();
				using (SqliteCommand slc = new SqliteCommand(query, dbc))
				{
					using (SqliteDataReader sldr = slc.ExecuteReader())
					{
						// If nothing is found, tell the user and exit
						if (!sldr.HasRows)
						{
							logger.Warning("No systems found! Please add a system and then try again.");
							return;
						}

						Console.WriteLine("Available Systems (id <= name):\n");
						while (sldr.Read())
						{
							Console.WriteLine(sldr.GetInt32(0) + "\t<=\t" + sldr.GetString(1) + " - " + sldr.GetString(2));
						}
					}
				}
			}
			return;
		}

		#endregion
	}
}