using System;
using System.Collections.Generic;
using System.Windows.Markup;
using System.IO;
using System.Reflection;

namespace SpritePacker
{
	class Program
	{
		public static void Main(string[] args)
		{
			Utilities.GetProgramBuildDate();
			List<string> values = new List<string>();
			for(int i = 0; i < args.Length; i++)
			{
				switch(args[i])
				{
					case "--help":
						string helpText = Utilities.GetEmbeddedResourceContent("SpritePacker.Resources.Help.txt");
						string commitHash = Utilities.GetEmbeddedResourceContent("SpritePacker.latest-commit-hash.txt").Trim();
						Dictionary<string, string> templateValues = new Dictionary<string, string>() {
							{ "version", Utilities.GetProgramVersion().ToString() },
							{ "build-time", Utilities.GetProgramBuildDate().ToString("dd/MM/yyyy h:mmtt") },
							{ "commit-hash", commitHash.Substring(commitHash.Length - 7) }
						};
						foreach (KeyValuePair<string, string> replacePair in templateValues)
							helpText = helpText.Replace(string.Format("{{{0}}}", replacePair.Key), replacePair.Value);
						
						Console.WriteLine(helpText);
						return;
					case "--version":
						Console.WriteLine("Version text coming soon!");
						return;
					default:
						values.Add(args[i]);
						break;
				}
			}

			Packer spritePacker = new Packer();
			foreach(string filename in values)
			{
				if (File.Exists(filename))
					spritePacker.Add(new Sprite(filename));
				else
					Console.Error.WriteLine("Warning: Ignoring non-existent file '{0}'.", filename);
			}
			spritePacker.Arrange();
			Console.WriteLine(spritePacker.ToString());
		}
	}
}