using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using UnitTestSharpHLSL;
using System.IO;

namespace UnitTestSharpHLSLDisassembler
{
    class Program
    {
        static string GetTextFromFile(string filename)
        {
            if (!File.Exists(filename))
            {
                throw new Exception(String.Format("{0} could not read file (does it exist?)", filename));
            }

            using (StreamReader sr = File.OpenText(filename))
            {
                return sr.ReadToEnd();
            }
        }

        static int Main(string[] args)
        {
            if (args.Count() != 1)
            {
                Console.WriteLine("" +
"Will spit out the disassembly of a given shader file, along with how many instruction slots " +
"are currently being used for it.  " +
"\n\n" +
"Usage: UnitTestSharpHLSLDisassembler.exe MyShader.hlsl");
                return 1;
            }

            string shaderText;

            try
            {
                shaderText = GetTextFromFile(args[0]);
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
                return 1;
            }

            Renderer renderer = new Renderer();

            var compiledShader = renderer.CreateShader(shaderText, "FromCommandLine", null);

            Console.WriteLine(new SharpDX.D3DCompiler.ShaderBytecode(compiledShader).Disassemble(SharpDX.D3DCompiler.DisassemblyFlags.None));

            return 0;
        }
    }
}