using System;
using System.Collections.Generic;
using System.IO;
using System.Threading.Tasks;
using Tesses.VirtualFilesystem;

namespace Tesses.YouTubeDownloader.VFS
{
    public class TYTDVFS : TYTDStorage
    {
        IVirtualFilesystem fs;
        public TYTDVFS(IVirtualFilesystem fs)
        {
            this.fs =fs;
        }

        public override async Task<Stream> CreateAsync(string path)
        {
            return await fs.OpenAsync(path,FileMode.Create,FileAccess.Write,FileShare.Inheritable);
        }

        public override void CreateDirectory(string path)
        {
            fs.CreateDirectory(path);
        }

        public override void DeleteDirectory(string dir, bool recursive = false)
        {
            fs.DeleteDirectory(dir, recursive);
        }

        public override void DeleteFile(string file)
        {
            fs.DeleteFile(file);
        }

        public override async Task<bool> DirectoryExistsAsync(string path)
        {
            return await fs.DirectoryExistsAsync(path);
        }

        public override async IAsyncEnumerable<string> EnumerateDirectoriesAsync(string path)
        {
            await foreach(var dir in fs.EnumerateDirectoriesAsync(path))
            {
                yield return dir.Name;
            }
        }

        public override async IAsyncEnumerable<string> EnumerateFilesAsync(string path)
        {
            await foreach(var file in fs.EnumerateFilesAsync(path))
            {
                yield return file.Name;
            }
        }

        public override async Task<bool> FileExistsAsync(string path)
        {
            return await fs.FileExistsAsync(path);
        }

        public override void MoveDirectory(string src, string dest)
        {
            fs.MoveDirectory(src,dest);
        }

        public override async Task<Stream> OpenOrCreateAsync(string path)
        {
            return await fs.OpenAsync(path,FileMode.OpenOrCreate,FileAccess.ReadWrite,FileShare.Inheritable);
        }

        public override async Task<Stream> OpenReadAsync(string path)
        {
            return await fs.OpenAsync(path,FileMode.Open,FileAccess.Read,FileShare.Read);
        }

        public override void RenameFile(string src, string dest)
        {
            fs.MoveFile(src,dest);
        }
        public override IEnumerable<string> EnumerateDirectories(string path)
        {
            foreach(var item in fs.EnumerateDirectories(path)) yield return item.Name;
        }
        public override IEnumerable<string> EnumerateFiles(string path)
        {
            foreach(var item in fs.EnumerateFiles(path)) yield return item.Name;

        }
        public override bool DirectoryExists(string path)
        {
            return fs.DirectoryExists(path);
        }
        public new bool FileExists(string path)
        {
            return fs.FileExists(path);
        }
    }
}