// --------------------------------------------------------------------------------------------------------------------
// <copyright file="DriveUtilities.cs" company="HandBrake Project (http://handbrake.fr)">
//   This file is part of the HandBrake source code - It may be used under the terms of the GNU General Public License.
// </copyright>
// <summary>
//   The drive utilities.
// </summary>
// --------------------------------------------------------------------------------------------------------------------

namespace HandBrakeWPF.Utilities
{
    using System.Collections.Generic;
    using System.IO;

    using HandBrakeWPF.Model;

    /// <summary>
    /// The drive utilities.
    /// </summary>
    public class DriveUtilities
    {
        /// <summary>
        /// Get a list of available DVD drives which are ready and contain DVD content.
        /// </summary>
        /// <returns>A List of Drives with their details</returns>
        public static List<DriveInformation> GetDrives()
        {
            var drives = new List<DriveInformation>();
            DriveInfo[] theCollectionOfDrives = DriveInfo.GetDrives();
            int id = 0;
            foreach (DriveInfo curDrive in theCollectionOfDrives)
            {
                if (curDrive.DriveType == DriveType.CDRom && curDrive.IsReady)
                {
                    if (Directory.Exists(curDrive.RootDirectory + "VIDEO_TS") ||
                        Directory.Exists(curDrive.RootDirectory + "BDMV"))
                    {
                        drives.Add(
                            new DriveInformation
                            {
                                Id = id, 
                                VolumeLabel = curDrive.VolumeLabel, 
                                RootDirectory = curDrive.RootDirectory?.ToString()
                            });
                        id++;
                    }
                }
            }

            return drives;
        }

        public static bool HasMinimumDiskSpace(string destination, long minimumInBytes)
        {
            string drive = Path.GetPathRoot(destination);
            if (!string.IsNullOrEmpty(drive) && !drive.StartsWith("\\"))
            {
                DriveInfo c = new DriveInfo(drive);
                if (c.AvailableFreeSpace < minimumInBytes)
                {
                    return false;
                }
            }

            return true;
        }
    }
}