module cm3d2.arc;

import std.file;
import std.mmfile;

import dfuse.fuse;

import cm3d2;

class WarcFile
{
    private MmFile _file;

    this(MmFile file)
    {
        _file = file;

        readHeader();
    }

    private void readHeader()
    {
        auto data = cast(ubyte[]) _file[];

        auto type = cast(string) data.readBytes(4);
        assert(type == "warc", "Invalid warc file: " ~ type);
    }
}

class WarpFile
{
    private MmFile _file;

    this(MmFile file)
    {
        _file = file;

        readHeader();
    }

    private void readHeader()
    {
        auto data = cast(ubyte[]) _file[];

        auto type = cast(string) data.readBytes(4);
        assert(type == "warp", "Invalid warp file: " ~ type);
    }
}

class ArcFileSystem : Operations
{
    private string[] _arcPaths;
    private WarcFile[] _warcFiles;
    private WarpFile[] _warpFiles;

    this(string[] arcPaths)
    {
        import std.stdio;

        foreach (path; arcPaths)
        {
            assert(path.exists);

            stderr.write(path ~ ": ");

            auto mmfile = new MmFile(path);
            auto type = cast(string) mmfile[0 .. 4];
            if (type == "warc")
            {
                _warcFiles ~= new WarcFile(mmfile);

                stderr.writeln("warc");
            }
            else if (type == "warp")
            {
                _warpFiles ~= new WarpFile(mmfile);

                stderr.writeln("warp");
            }
            else
            {
                assert(false, path ~ ": not a valid .arc file");
            }
        }

        stderr.writeln(".arc files checked");

        throw new Exception("Not implemented yet");
    }
}