using System;
using System.Collections.Generic;
using System.IO;
using Zio;

namespace TBL.GodotSharp.Content.FileSystem
{
    public class NativeFileSystem : Zio.FileSystems.FileSystem
    {
        /// <summary>
        /// 根目录
        /// </summary>
        private readonly string _rootPath;

        public NativeFileSystem(string rootPath)
        {
            _rootPath = rootPath;
        }
        
        private string GetFullPath(UPath uPath) => $"{_rootPath}{uPath}";

        protected override bool DirectoryExistsImpl(UPath path) => Directory.Exists(GetFullPath(path));

        protected override bool FileExistsImpl(UPath path) => File.Exists(GetFullPath(path));

        protected override Stream OpenFileImpl(UPath path, FileMode mode, FileAccess access, FileShare share) =>
            File.Open(GetFullPath(path), mode, access);

        protected override IEnumerable<UPath> EnumeratePathsImpl(
            UPath path,
            string searchPattern,
            SearchOption searchOption,
            SearchTarget searchTarget
        )
        {
            if (searchTarget == SearchTarget.Both || searchTarget == SearchTarget.File)
                foreach (var current in Directory.EnumerateFiles(GetFullPath(path), searchPattern, searchOption))
                {
                    yield return current.Substring(_rootPath.Length);
                }
            if (searchTarget == SearchTarget.Both || searchTarget == SearchTarget.Directory)
                foreach (var current in Directory.EnumerateDirectories(GetFullPath(path), searchPattern, searchOption))
                {
                    yield return current.Substring(_rootPath.Length);
                }
        }

        protected override void CreateDirectoryImpl(UPath path)
        {
            throw new NotImplementedException();
        }

        protected override void MoveDirectoryImpl(UPath srcPath, UPath destPath)
        {
            throw new NotImplementedException();
        }

        protected override void DeleteDirectoryImpl(UPath path, bool isRecursive)
        {
            throw new NotImplementedException();
        }

        protected override void CopyFileImpl(UPath srcPath, UPath destPath, bool overwrite)
        {
            throw new NotImplementedException();
        }

        protected override void ReplaceFileImpl(UPath srcPath, UPath destPath, UPath destBackupPath, bool ignoreMetadataErrors)
        {
            throw new NotImplementedException();
        }

        protected override long GetFileLengthImpl(UPath path)
        {
            throw new NotImplementedException();
        }

        protected override void MoveFileImpl(UPath srcPath, UPath destPath)
        {
            throw new NotImplementedException();
        }

        protected override void DeleteFileImpl(UPath path)
        {
            throw new NotImplementedException();
        }

        protected override FileAttributes GetAttributesImpl(UPath path)
        {
            throw new NotImplementedException();
        }

        protected override void SetAttributesImpl(UPath path, FileAttributes attributes)
        {
            throw new NotImplementedException();
        }

        protected override DateTime GetCreationTimeImpl(UPath path)
        {
            throw new NotImplementedException();
        }

        protected override void SetCreationTimeImpl(UPath path, DateTime time)
        {
            throw new NotImplementedException();
        }

        protected override DateTime GetLastAccessTimeImpl(UPath path)
        {
            throw new NotImplementedException();
        }

        protected override void SetLastAccessTimeImpl(UPath path, DateTime time)
        {
            throw new NotImplementedException();
        }

        protected override DateTime GetLastWriteTimeImpl(UPath path)
        {
            throw new NotImplementedException();
        }

        protected override void SetLastWriteTimeImpl(UPath path, DateTime time)
        {
            throw new NotImplementedException();
        }

        protected override IEnumerable<FileSystemItem> EnumerateItemsImpl(UPath path, SearchOption searchOption, SearchPredicate searchPredicate)
        {
            throw new NotImplementedException();
        }

        protected override IFileSystemWatcher WatchImpl(UPath path)
        {
            throw new NotImplementedException();
        }

        protected override string ConvertPathToInternalImpl(UPath path)
        {
            throw new NotImplementedException();
        }

        protected override UPath ConvertPathFromInternalImpl(string innerPath)
        {
            throw new NotImplementedException();
        }
    }
}