// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

using System;
using System.IO;

#nullable enable

namespace Microsoft.Arcade.Common;

public class FileSystem : IFileSystem
{
    public void CreateDirectory(string path) => Directory.CreateDirectory(path);

    public bool DirectoryExists(string path) => Directory.Exists(path);

    public bool FileExists(string path) => File.Exists(path);

    public void DeleteFile(string path) => File.Delete(path);

    public string? GetDirectoryName(string? path) => Path.GetDirectoryName(path);

    public string? GetFileName(string? path) => Path.GetFileName(path);

    public string? GetFileNameWithoutExtension(string? path) => Path.GetFileNameWithoutExtension(path);

    public string? GetExtension(string? path) => Path.GetExtension(path);

    public string GetFullPath(string path) => Path.GetFullPath(path);

    public string PathCombine(string path1, string path2) => Path.Combine(path1, path2);

    public string PathCombine(string path1, string path2, string path3) => Path.Combine(path1, path2, path3);

    public void WriteToFile(string path, string content)
    {
        string? dirPath = Path.GetDirectoryName(path);
        Directory.CreateDirectory(dirPath!);
        File.WriteAllText(path, content);
    }

    public virtual void CopyFile(string sourceFileName, string destFileName, bool overwrite = false) => File.Copy(sourceFileName, destFileName, overwrite);

    public Stream GetFileStream(string path, FileMode mode, FileAccess access) => new FileStream(path, mode, access);

    public FileAttributes GetAttributes(string path) => File.GetAttributes(path);

    /// <summary>
    /// Intentionally NYI since the backing API is not supported on framework and core.
    /// We use this in the PushToBuildStorage task under a limited set of circumstances.
    /// </summary>
    /// <param name="basePath">Base path</param>
    /// <param name="targetPath">Target path that is relative to base path.</param>
    /// <exception cref="NotImplementedException"></exception>
    public virtual string GetRelativePath(string basePath, string targetPath) => throw new NotImplementedException("Not supported in default FileSystem implementation");
}