using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.FileSystem;
using Tango.FileSystem.Network;
using static System.Environment;

namespace Tango.FSE.Common.FileSystem
{
    /// <summary>
    /// Represents a remote machine PPC file system provider.
    /// </summary>
    public interface IFileSystemProvider
    {
        /// <summary>
        /// Gets or sets a value indicating whether to enable a P2P WebRTC channel for fast transport.
        /// </summary>
        bool EnableWebRTC { get; set; }

        /// <summary>
        /// Gets a value indicating whether the WebRTC channel is available.
        /// </summary>
        bool IsWebRtcAvailable { get; }

        /// <summary>
        /// Gets a folder by the specified path.
        /// </summary>
        /// <param name="path">The path.</param>
        /// <returns></returns>
        Task<IFileSystemContainer> GetFolder(String path);

        /// <summary>
        /// Gets the specified special folder.
        /// </summary>
        /// <param name="specialFolder">The special folder.</param>
        /// <returns></returns>
        Task<IFileSystemContainer> GetSpecialFolder(SpecialFolder specialFolder);

        /// <summary>
        /// Gets the ThisPC (the root path of the PC).
        /// </summary>
        /// <returns></returns>
        Task<IFileSystemContainer> GetThisPC();

        /// <summary>
        /// Downloads the specified file or folder item.
        /// </summary>
        /// <param name="item">The file or folder.</param>
        /// <param name="localTargetFolderOrFile">The local target folder or file.</param>
        /// <param name="isLocaTargetFile">Indicates whether the localTargetFolder is a file.</param>
        /// <returns></returns>
        Task<FileSystemHandler> Download(FileSystemItem item, String localTargetFolderOrFile, bool isLocaTargetFile = false);

        /// <summary>
        /// Downloads the specified file or folder item.
        /// </summary>
        /// <param name="remotePath">The remote file or folder.</param>
        /// <param name="isRemotePathFile">Indicates whether the remote path is a file.</param>
        /// <param name="localTargetFolderOrFile">The local target folder or file.</param>
        /// <param name="isLocalTargetFile">Indicates whether the localTargetFolder is a file.</param>
        /// <returns></returns>
        Task<FileSystemHandler> Download(String remotePath, bool isRemotePathFile, String localTargetFolderOrFile, bool isLocalTargetFile = false);

        /// <summary>
        /// Uploads the specified local file or folder.
        /// </summary>
        /// <param name="localSourcePath">The local source path.</param>
        /// <param name="remoteFolder">The remote folder.</param>
        /// <returns></returns>
        Task<FileSystemHandler> Upload(String localSourcePath, FileSystemItem remoteFolder);

        /// <summary>
        /// Uploads the specified local file or folder.
        /// </summary>
        /// <param name="localSourcePath">The local source path.</param>
        /// <param name="remotePath">The remote destination path.</param>
        /// <param name="forRemoteUpgrade">Indicates whether this upload operation is performed for a remote upgrade.</param>
        /// <returns></returns>
        /// <exception cref="System.IO.FileNotFoundException">Could not locate the local file or directory to upload.</exception>
        Task<FileSystemHandler> Upload(String localSourcePath, String remotePath, bool forRemoteUpgrade = false);

        /// <summary>
        /// Copies the specified remote file or folder to the specified target remote folder.
        /// </summary>
        /// <param name="source">The remote source file or folder.</param>
        /// <param name="target">The remote target folder.</param>
        /// <returns></returns>
        Task Copy(FileSystemItem source, FileSystemItem target);

        /// <summary>
        /// Moves the specified remote file or folder to the remote target folder.
        /// </summary>
        /// <param name="source">The remote source file or folder.</param>
        /// <param name="target">The remote target folder.</param>
        /// <returns></returns>
        Task Move(FileSystemItem source, FileSystemItem target);

        /// <summary>
        /// Renames the specified file or folder.
        /// </summary>
        /// <param name="source">The remote source file or folder.</param>
        /// <param name="newName">The new name.</param>
        /// <returns></returns>
        Task Rename(FileSystemItem source, String newName);

        /// <summary>
        /// Deletes the specified file or folder.
        /// </summary>
        /// <param name="item">The remote file or folder.</param>
        /// <returns></returns>
        Task Delete(FileSystemItem item);

        /// <summary>
        /// Creates a new folder at the specified remote parent.
        /// </summary>
        /// <param name="parent">The remote parent path.</param>
        /// <param name="folderName">Name of the new folder.</param>
        /// <returns></returns>
        Task<FolderItem> CreateFolder(FileSystemItem parent, String folderName);

        /// <summary>
        /// Performs a disk space optimization.
        /// </summary>
        /// <returns></returns>
        Task<PerformDiskSpaceOptimizationResponse> PerformDiskSpaceOptimization();
    }
}