using System;
using System.IO;

namespace pkNX.Containers;

public static class Container
{
    /// <summary>
    /// Gets a new <see cref="IFileContainer"/> for the provided <see cref="path"/> and type.
    /// </summary>
    /// <param name="path">File location</param>
    /// <param name="t">File type</param>
    public static IFileContainer GetContainer(string path, ContainerType t)
    {
        return t switch
        {
            ContainerType.GARC => new GARC(path),
            ContainerType.Mini => MiniUtil.GetMini(path),
            ContainerType.SARC => new SARC(path),
            ContainerType.Folder => new FolderContainer(path),
            ContainerType.SingleFile => new SingleFileContainer(path),
            ContainerType.GFPack => new GFPack(path),
            _ => throw new ArgumentOutOfRangeException(nameof(t), t, null),
        };
    }

    /// <summary>
    /// Gets a <see cref="IFileContainer"/> for the stream.
    /// </summary>
    /// <param name="path">Path to the binary data</param>
    public static IFileContainer? GetContainer(string path)
    {
        var fs = new FileStream(path, FileMode.Open);
        var container = GetContainer(fs);
        if (container is not LargeContainer) // not kept
            fs.Dispose();
        if (container == null)
            return null;

        container.FilePath = path;
        return container;
    }

    /// <summary>
    /// Gets a <see cref="IFileContainer"/> for the stream.
    /// </summary>
    /// <param name="stream">Stream for the binary data</param>
    public static IFileContainer? GetContainer(Stream stream)
    {
        var br = new BinaryReader(stream);
        var container = GetContainer(br);
        if (container is not LargeContainer) // not kept
            br.Dispose();
        return container;
    }

    /// <summary>
    /// Gets a <see cref="IFileContainer"/> for the stream within the <see cref="BinaryReader"/>.
    /// </summary>
    /// <param name="br">Reader for the binary data</param>
    public static IFileContainer? GetContainer(BinaryReader br)
    {
        IFileContainer? container;
        if ((container = GARC.GetGARC(br)) != null)
            return container;
        if ((container = MiniUtil.GetMini(br)) != null)
            return container;
        if ((container = SARC.GetSARC(br)) != null)
            return container;
        return null;
    }
}