using RecrownedAthenaeum.Tools.CommandProcessor;
using RecrownedAthenaeum.Tools.TextureAtlas;
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;

namespace RecrownedAthenaeum.Tools.TextureAtlasTools
{
    class TexturePackerCommand : ICommandEngineCommand
    {
        TexturePacker texturePacker;
        public void Run(string[] arguments)
        {
            for (int i = 0; i < arguments.Length; i++)
            {
                if (arguments[i] == "-i")
                {
                    if (i + 1 >= arguments.Length) throw new ArgumentException("-i is not followed by path for input directory.");
                    texturePacker = new TexturePacker((arguments[i + 1]));
                }
            }
            texturePacker.Build();

            for (int i = 0; i < arguments.Length; i++)
            {
                if (arguments[i] == "-9p")
                {
                    if (i + 5 >= arguments.Length) throw new ArgumentException("-9p is not followed by proper specifiers for a 9Patch (format: \"-9p textureName,a,b,c,d\" where a, b, c, and d are integers definining the border regions for the 9patch.)");
                    string[] nPatchArgs = arguments[i + 1].Split(',');
                    try
                    {
                    texturePacker.SetNinePatch(nPatchArgs[0], int.Parse(nPatchArgs[1]), int.Parse(nPatchArgs[2]), int.Parse(nPatchArgs[3]), int.Parse(nPatchArgs[4]));
                    } catch (FormatException)
                    {
                        throw new ArgumentException("-9p argument parameters must be in the format \"-9p textureName,a,b,c,d\" where a, b, c, and d are integers definining the border regions for the 9patch.");
                    }
                }
            }

            for (int i = 0; i < arguments.Length; i++)
            {
                if (arguments[i] == "-o")
                {
                    if (i + 1 >= arguments.Length) throw new ArgumentException("-o is not followed by path for output files. (eg. path/to/file where file is the name for the atlas.)");
                    texturePacker.Save(Path.GetDirectoryName(arguments[i + 1]), Path.GetFileName(arguments[i + 1]));
                    return;
                }

                if (i == arguments.Length - 1)
                {
                    throw new ArgumentException("no -o argument found to specify output.");
                }
            }
        }
    }
}