MPF/MPF.Frontend/ViewModels/MainViewModel.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.IO;
using System.Threading.Tasks;
using BinaryObjectScanner;
using MPF.Frontend.ComboBoxItems;
using MPF.Frontend.Tools;
using SabreTools.IO;
using SabreTools.IO.Extensions;
using SabreTools.RedumpLib.Data;

namespace MPF.Frontend.ViewModels
{
    public class MainViewModel : INotifyPropertyChanged
    {
        #region Fields

        /// <summary>
        /// Access to the current options
        /// </summary>
        public Options Options
        {
            get => _options;
            set
            {
                _options = value;
                OptionsLoader.SaveToConfig(_options);
            }
        }
        private Options _options;

        /// <summary>
        /// Indicates if SelectionChanged events can be executed
        /// </summary>
        public bool CanExecuteSelectionChanged { get; private set; } = false;

        /// <inheritdoc/>
        public event PropertyChangedEventHandler? PropertyChanged;

        /// <summary>
        /// Action to process logging statements
        /// </summary>
        private Action<LogLevel, string>? _logger;

        /// <summary>
        /// Display a message to a user
        /// </summary>
        /// <remarks>
        /// T1 - Title to display to the user
        /// T2 - Message to display to the user
        /// T3 - Number of default options to display
        /// T4 - true for inquiry, false otherwise
        /// TResult - true for positive, false for negative, null for neutral
        /// </remarks>
        private Func<string, string, int, bool, bool?>? _displayUserMessage;

        /// <summary>
        /// Detected media type, distinct from the selected one
        /// </summary>
        private MediaType? _detectedMediaType;

        /// <summary>
        /// Current dumping environment
        /// </summary>
        private DumpEnvironment? _environment;

        /// <summary>
        /// Function to process user information
        /// </summary>
        private ProcessUserInfoDelegate? _processUserInfo;

        #endregion

        #region Properties

        /// <summary>
        /// Indicates the status of the check dump menu item
        /// </summary>
        public bool CheckDumpMenuItemEnabled
        {
            get => _checkDumpMenuItemEnabled;
            set
            {
                _checkDumpMenuItemEnabled = value;
                TriggerPropertyChanged(nameof(CheckDumpMenuItemEnabled));
            }
        }
        private bool _checkDumpMenuItemEnabled;

        /// <summary>
        /// Indicates the status of the create IRD menu item
        /// </summary>
        public bool CreateIRDMenuItemEnabled
        {
            get => _createIRDMenuItemEnabled;
            set
            {
                _createIRDMenuItemEnabled = value;
                TriggerPropertyChanged(nameof(CreateIRDMenuItemEnabled));
            }
        }
        private bool _createIRDMenuItemEnabled;

        /// <summary>
        /// Indicates the status of the options menu item
        /// </summary>
        public bool OptionsMenuItemEnabled
        {
            get => _optionsMenuItemEnabled;
            set
            {
                _optionsMenuItemEnabled = value;
                TriggerPropertyChanged(nameof(OptionsMenuItemEnabled));
            }
        }
        private bool _optionsMenuItemEnabled;

        /// <summary>
        /// Currently selected system value
        /// </summary>
        public RedumpSystem? CurrentSystem
        {
            get => _currentSystem;
            set
            {
                _currentSystem = value;
                TriggerPropertyChanged(nameof(CurrentSystem));
            }
        }
        private RedumpSystem? _currentSystem;

        /// <summary>
        /// Indicates the status of the system type combo box
        /// </summary>
        public bool SystemTypeComboBoxEnabled
        {
            get => _systemTypeComboBoxEnabled;
            set
            {
                _systemTypeComboBoxEnabled = value;
                TriggerPropertyChanged(nameof(SystemTypeComboBoxEnabled));
            }
        }
        private bool _systemTypeComboBoxEnabled;

        /// <summary>
        /// Currently selected media type value
        /// </summary>
        public MediaType? CurrentMediaType
        {
            get => _currentMediaType;
            set
            {
                _currentMediaType = value;
                TriggerPropertyChanged(nameof(CurrentMediaType));
            }
        }
        private MediaType? _currentMediaType;

        /// <summary>
        /// Indicates the status of the media type combo box
        /// </summary>
        public bool MediaTypeComboBoxEnabled
        {
            get => _mediaTypeComboBoxEnabled;
            set
            {
                _mediaTypeComboBoxEnabled = value;
                TriggerPropertyChanged(nameof(MediaTypeComboBoxEnabled));
            }
        }
        private bool _mediaTypeComboBoxEnabled;

        /// <summary>
        /// Currently provided output path
        /// Not guaranteed to be a valid path
        /// </summary>
        public string OutputPath
        {
            get => _outputPath;
            set
            {
                _outputPath = value;
                TriggerPropertyChanged(nameof(OutputPath));
            }
        }
        private string _outputPath;

        /// <summary>
        /// Indicates the status of the output path text box
        /// </summary>
        public bool OutputPathTextBoxEnabled
        {
            get => _outputPathTextBoxEnabled;
            set
            {
                _outputPathTextBoxEnabled = value;
                TriggerPropertyChanged(nameof(OutputPathTextBoxEnabled));
            }
        }
        private bool _outputPathTextBoxEnabled;

        /// <summary>
        /// Indicates the status of the output path browse button
        /// </summary>
        public bool OutputPathBrowseButtonEnabled
        {
            get => _outputPathBrowseButtonEnabled;
            set
            {
                _outputPathBrowseButtonEnabled = value;
                TriggerPropertyChanged(nameof(OutputPathBrowseButtonEnabled));
            }
        }
        private bool _outputPathBrowseButtonEnabled;

        /// <summary>
        /// Currently selected drive value
        /// </summary>
        public Drive? CurrentDrive
        {
            get => _currentDrive;
            set
            {
                _currentDrive = value;
                TriggerPropertyChanged(nameof(CurrentDrive));
            }
        }
        private Drive? _currentDrive;

        /// <summary>
        /// Indicates the status of the drive combo box
        /// </summary>
        public bool DriveLetterComboBoxEnabled
        {
            get => _driveLetterComboBoxEnabled;
            set
            {
                _driveLetterComboBoxEnabled = value;
                TriggerPropertyChanged(nameof(DriveLetterComboBoxEnabled));
            }
        }
        private bool _driveLetterComboBoxEnabled;

        /// <summary>
        /// Currently selected drive speed value
        /// </summary>
        public int DriveSpeed
        {
            get => _driveSpeed;
            set
            {
                _driveSpeed = value;
                TriggerPropertyChanged(nameof(DriveSpeed));
            }
        }
        private int _driveSpeed;

        /// <summary>
        /// Indicates the status of the drive speed combo box
        /// </summary>
        public bool DriveSpeedComboBoxEnabled
        {
            get => _driveSpeedComboBoxEnabled;
            set
            {
                _driveSpeedComboBoxEnabled = value;
                TriggerPropertyChanged(nameof(DriveSpeedComboBoxEnabled));
            }
        }
        private bool _driveSpeedComboBoxEnabled;

        /// <summary>
        /// Currently selected dumping program
        /// </summary>
        public InternalProgram CurrentProgram
        {
            get => _currentProgram;
            set
            {
                _currentProgram = value;
                TriggerPropertyChanged(nameof(CurrentProgram));
            }
        }
        private InternalProgram _currentProgram;

        /// <summary>
        /// Indicates the status of the dumping program combo box
        /// </summary>
        public bool DumpingProgramComboBoxEnabled
        {
            get => _dumpingProgramComboBoxEnabled;
            set
            {
                _dumpingProgramComboBoxEnabled = value;
                TriggerPropertyChanged(nameof(DumpingProgramComboBoxEnabled));
            }
        }
        private bool _dumpingProgramComboBoxEnabled;

        /// <summary>
        /// Currently provided parameters
        /// </summary>
        public string Parameters
        {
            get => _parameters;
            set
            {
                _parameters = value;
                TriggerPropertyChanged(nameof(Parameters));
            }
        }
        private string _parameters;

        /// <summary>
        /// Indicates the status of the parameters text box
        /// </summary>
        public bool ParametersTextBoxEnabled
        {
            get => _parametersTextBoxEnabled;
            set
            {
                _parametersTextBoxEnabled = value;
                TriggerPropertyChanged(nameof(ParametersTextBoxEnabled));
            }
        }
        private bool _parametersTextBoxEnabled;

        /// <summary>
        /// Indicates the status of the parameters check box
        /// </summary>
        public bool ParametersCheckBoxEnabled
        {
            get => _parametersCheckBoxEnabled;
            set
            {
                _parametersCheckBoxEnabled = value;
                TriggerPropertyChanged(nameof(ParametersCheckBoxEnabled));
            }
        }
        private bool _parametersCheckBoxEnabled;

        /// <summary>
        /// Indicates the status of the parameters check box
        /// </summary>
        public bool EnableParametersCheckBoxEnabled
        {
            get => _enableParametersCheckBoxEnabled;
            set
            {
                _enableParametersCheckBoxEnabled = value;
                TriggerPropertyChanged(nameof(EnableParametersCheckBoxEnabled));
            }
        }
        private bool _enableParametersCheckBoxEnabled;

        /// <summary>
        /// Indicates the status of the start/stop button
        /// </summary>
        public bool StartStopButtonEnabled
        {
            get => _startStopButtonEnabled;
            set
            {
                _startStopButtonEnabled = value;
                TriggerPropertyChanged(nameof(StartStopButtonEnabled));
            }
        }
        private bool _startStopButtonEnabled;

        /// <summary>
        /// Current value for the start/stop dumping button
        /// </summary>
        public object StartStopButtonText
        {
            get => _startStopButtonText;
            set
            {
                _startStopButtonText = (value as string) ?? string.Empty;
                TriggerPropertyChanged(nameof(StartStopButtonText));
            }
        }
        private string _startStopButtonText;

        /// <summary>
        /// Indicates the status of the media scan button
        /// </summary>
        public bool MediaScanButtonEnabled
        {
            get => _mediaScanButtonEnabled;
            set
            {
                _mediaScanButtonEnabled = value;
                TriggerPropertyChanged(nameof(MediaScanButtonEnabled));
            }
        }
        private bool _mediaScanButtonEnabled;

        /// <summary>
        /// Indicates the status of the update volume label button
        /// </summary>
        public bool UpdateVolumeLabelEnabled
        {
            get => _updateVolumeLabelEnabled;
            set
            {
                _updateVolumeLabelEnabled = value;
                TriggerPropertyChanged(nameof(UpdateVolumeLabelEnabled));
            }
        }
        private bool _updateVolumeLabelEnabled;

        /// <summary>
        /// Indicates the status of the copy protect scan button
        /// </summary>
        public bool CopyProtectScanButtonEnabled
        {
            get => _copyProtectScanButtonEnabled;
            set
            {
                _copyProtectScanButtonEnabled = value;
                TriggerPropertyChanged(nameof(CopyProtectScanButtonEnabled));
            }
        }
        private bool _copyProtectScanButtonEnabled;

        /// <summary>
        /// Currently displayed status
        /// </summary>
        public string Status
        {
            get => _status;
            set
            {
                _status = value;
                TriggerPropertyChanged(nameof(Status));
            }
        }
        private string _status;

        /// <summary>
        /// Indicates the status of the log panel
        /// </summary>
        public bool LogPanelExpanded
        {
            get => _logPanelExpanded;
            set
            {
                _logPanelExpanded = value;
                TriggerPropertyChanged(nameof(LogPanelExpanded));
            }
        }
        private bool _logPanelExpanded;

        #endregion

        #region List Properties

        /// <summary>
        /// Current list of drives
        /// </summary>
        public List<Drive> Drives
        {
            get => _drives;
            set
            {
                _drives = value;
                TriggerPropertyChanged(nameof(Drives));
            }
        }
        private List<Drive> _drives;

        /// <summary>
        /// Current list of drive speeds
        /// </summary>
        public List<int> DriveSpeeds
        {
            get => _driveSpeeds;
            set
            {
                _driveSpeeds = value;
                TriggerPropertyChanged(nameof(DriveSpeeds));
            }
        }
        private List<int> _driveSpeeds;

        /// <summary>
        /// Current list of supported media types
        /// </summary>
        public List<Element<MediaType>>? MediaTypes
        {
            get => _mediaTypes;
            set
            {
                _mediaTypes = value;
                TriggerPropertyChanged(nameof(MediaTypes));
            }
        }
        private List<Element<MediaType>>? _mediaTypes;

        /// <summary>
        /// Current list of supported system profiles
        /// </summary>
        public List<RedumpSystemComboBoxItem> Systems
        {
            get => _systems;
            set
            {
                _systems = value;
                TriggerPropertyChanged(nameof(Systems));
            }
        }
        private List<RedumpSystemComboBoxItem> _systems;

        /// <summary>
        /// List of available internal programs
        /// </summary>
        public List<Element<InternalProgram>> InternalPrograms
        {
            get => _internalPrograms;
            set
            {
                _internalPrograms = value;
                TriggerPropertyChanged(nameof(InternalPrograms));
            }
        }
        private List<Element<InternalProgram>> _internalPrograms;

        #endregion

        #region Constants

        private const string DiscNotDetectedValue = "Disc Not Detected";
        private const string StartDumpingValue = "Start Dumping";
        private const string StopDumpingValue = "Stop Dumping";

        #endregion

        /// <summary>
        /// Generic constructor
        /// </summary>
        public MainViewModel()
        {
            _options = OptionsLoader.LoadFromConfig();

            // Added to clear warnings, all are set externally
            _drives = [];
            _driveSpeeds = [];
            _internalPrograms = [];
            _outputPath = string.Empty;
            _parameters = string.Empty;
            _startStopButtonText = string.Empty;
            _status = string.Empty;
            _systems = [];

            OptionsMenuItemEnabled = true;
            CheckDumpMenuItemEnabled = true;
            CreateIRDMenuItemEnabled = true;
            SystemTypeComboBoxEnabled = true;
            MediaTypeComboBoxEnabled = true;
            OutputPathTextBoxEnabled = true;
            OutputPathBrowseButtonEnabled = true;
            DriveLetterComboBoxEnabled = true;
            DumpingProgramComboBoxEnabled = true;
            StartStopButtonEnabled = true;
            StartStopButtonText = StartDumpingValue;
            MediaScanButtonEnabled = true;
            ParametersCheckBoxEnabled = true;
            EnableParametersCheckBoxEnabled = true;
            LogPanelExpanded = _options.OpenLogWindowAtStartup;

            MediaTypes = [];
            Systems = RedumpSystemComboBoxItem.GenerateElements();
            InternalPrograms = [];
        }

        /// <summary>
        /// Initialize the main window after loading
        /// </summary>
        public void Init(
            Action<LogLevel, string> loggerAction,
            Func<string, string, int, bool, bool?> displayUserMessage,
            ProcessUserInfoDelegate processUserInfo)
        {
            // Set the callbacks
            _logger = loggerAction;
            _displayUserMessage = displayUserMessage;
            _processUserInfo = processUserInfo;

            // Finish initializing the rest of the values
            InitializeUIValues(removeEventHandlers: false, rebuildPrograms: true, rescanDrives: true);
        }

        #region Property Updates

        /// <summary>
        /// Trigger a property changed event
        /// </summary>
        private void TriggerPropertyChanged(string propertyName)
        {
            // Disable event handlers temporarily
            bool cachedCanExecuteSelectionChanged = CanExecuteSelectionChanged;
            DisableEventHandlers();

            // If the property change event is initialized
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));

            // Reenable event handlers, if necessary
            if (cachedCanExecuteSelectionChanged) EnableEventHandlers();
        }

        #endregion

        #region Population

        /// <summary>
        /// Get a complete list of active disc drives and fill the combo box
        /// </summary>
        /// <remarks>TODO: Find a way for this to periodically run, or have it hook to a "drive change" event</remarks>
        private void PopulateDrives()
        {
            // Disable other UI updates
            bool cachedCanExecuteSelectionChanged = CanExecuteSelectionChanged;
            DisableEventHandlers();

            VerboseLogLn("Scanning for drives..");

            // Always enable the media scan
            MediaScanButtonEnabled = true;
            UpdateVolumeLabelEnabled = true;

            // If we have a selected drive, keep track of it
            char? lastSelectedDrive = CurrentDrive?.Name?[0] ?? null;

            // Populate the list of drives and add it to the combo box
            Drives = Drive.CreateListOfDrives(Options.IgnoreFixedDrives);

            if (Drives.Count > 0)
            {
                VerboseLogLn($"Found {Drives.Count} drives: {string.Join(", ", [.. Drives.ConvertAll(d => d.Name)])}");

                // Check for the last selected drive, if possible
                int index = -1;
                if (lastSelectedDrive != null)
                    index = Drives.FindIndex(d => d.MarkedActive && (d.Name?[0] ?? '\0') == lastSelectedDrive);

                // Check for active optical drives
                if (index == -1)
                    index = Drives.FindIndex(d => d.MarkedActive && d.InternalDriveType == InternalDriveType.Optical);

                // Check for active floppy drives
                if (index == -1)
                    index = Drives.FindIndex(d => d.MarkedActive && d.InternalDriveType == InternalDriveType.Floppy);

                // Check for any active drives
                if (index == -1)
                    index = Drives.FindIndex(d => d.MarkedActive);

                // Set the selected index
                CurrentDrive = (index != -1 ? Drives[index] : Drives[0]);
                Status = "Valid drive found! Choose your Media Type";
                CopyProtectScanButtonEnabled = true;

                // Get the current system type
                if (index != -1)
                    DetermineSystemType();

                // Only enable the start/stop if we don't have the default selected
                StartStopButtonEnabled = ShouldEnableDumpingButton();
            }
            else
            {
                VerboseLogLn("Found no drives");
                CurrentDrive = null;
                Status = "No valid drive found!";
                StartStopButtonEnabled = false;
                CopyProtectScanButtonEnabled = false;
            }

            // Reenable event handlers, if necessary
            if (cachedCanExecuteSelectionChanged) EnableEventHandlers();
        }

        /// <summary>
        /// Populate media type according to system type
        /// </summary>
        private void PopulateMediaType()
        {
            // Disable other UI updates
            bool cachedCanExecuteSelectionChanged = CanExecuteSelectionChanged;
            DisableEventHandlers();

            if (CurrentSystem != null)
            {
                var mediaTypeValues = CurrentSystem.MediaTypes();
                int index = mediaTypeValues.FindIndex(m => m == CurrentMediaType);
                if (CurrentMediaType != null && index == -1)
                    VerboseLogLn($"Disc of type '{CurrentMediaType.LongName()}' found, but the current system does not support it!");

                MediaTypes = mediaTypeValues.ConvertAll(m => new Element<MediaType>(m ?? MediaType.NONE));
                MediaTypeComboBoxEnabled = MediaTypes.Count > 1;
                CurrentMediaType = (index > -1 ? MediaTypes[index] : MediaTypes[0]);
            }
            else
            {
                MediaTypeComboBoxEnabled = false;
                MediaTypes = null;
                CurrentMediaType = null;
            }

            // Reenable event handlers, if necessary
            if (cachedCanExecuteSelectionChanged) EnableEventHandlers();
        }

        /// <summary>
        /// Populate media type according to system type
        /// </summary>
        private void PopulateInternalPrograms()
        {
            // Disable other UI updates
            bool cachedCanExecuteSelectionChanged = CanExecuteSelectionChanged;
            DisableEventHandlers();

            // Create a static list of supported programs, not everything
            var ipArr = (InternalProgram[])Enum.GetValues(typeof(InternalProgram));
            ipArr = Array.FindAll(ipArr, ip => InternalProgramExists(ip));
            InternalPrograms = [.. Array.ConvertAll(ipArr, ip => new Element<InternalProgram>(ip))];

            // Get the current internal program
            InternalProgram internalProgram = Options.InternalProgram;

            // Select the current default dumping program
            if (InternalPrograms.Count == 0)
            {
                // If no programs are found, default to InternalProgram.NONE
                CurrentProgram = InternalProgram.NONE;
            }
            else
            {
                int currentIndex = InternalPrograms.FindIndex(m => m == internalProgram);
                CurrentProgram = (currentIndex > -1 ? InternalPrograms[currentIndex].Value : InternalPrograms[0].Value);
            }

            // Reenable event handlers, if necessary
            if (cachedCanExecuteSelectionChanged) EnableEventHandlers();
        }

        #endregion

        #region UI Commands

        /// <summary>
        /// Change the currently selected dumping program
        /// </summary>
        public void ChangeDumpingProgram()
        {
            VerboseLogLn($"Changed dumping program to: {((InternalProgram?)CurrentProgram).LongName()}");
            EnsureDiscInformation();
            // New output name depends on new environment
            GetOutputNames(false);
            // New environment depends on new output name
            EnsureDiscInformation();
        }

        /// <summary>
        /// Change the currently selected media type
        /// </summary>
        public void ChangeMediaType(System.Collections.IList removedItems, System.Collections.IList addedItems)
        {
            // Only change the media type if the selection and not the list has changed
            if ((removedItems == null || removedItems.Count == 1) && (addedItems == null || addedItems.Count == 1))
                SetSupportedDriveSpeed();

            GetOutputNames(false);
            EnsureDiscInformation();
        }

        /// <summary>
        /// Change the currently selected system
        /// </summary>
        public void ChangeSystem()
        {
            VerboseLogLn($"Changed system to: {CurrentSystem.LongName()}");
            PopulateMediaType();
            GetOutputNames(false);
            EnsureDiscInformation();
        }

        /// <summary>
        /// Check for available updates
        /// </summary>
        public void CheckForUpdates(out bool different, out string message, out string? url)
        {
            FrontendTool.CheckForNewVersion(out different, out message, out url);

            SecretLogLn(message);
            if (url == null)
                message = "An exception occurred while checking for versions, please try again later. See the log window for more details.";
        }

        /// <summary>
        /// Build the about text 
        /// </summary>
        /// <returns></returns>
        public string CreateAboutText()
        {
            string aboutText = $"Media Preservation Frontend (MPF)"
                + $"{Environment.NewLine}"
                + $"{Environment.NewLine}A community preservation frontend developed in C#."
                + $"{Environment.NewLine}Supports Redumper, Aaru, and DiscImageCreator."
                + $"{Environment.NewLine}Originally created to help the Redump project."
                + $"{Environment.NewLine}"
                + $"{Environment.NewLine}Thanks to everyone who has supported this project!"
                + $"{Environment.NewLine}"
                + $"{Environment.NewLine}Version {FrontendTool.GetCurrentVersion()}";
            SecretLogLn(aboutText);
            return aboutText;
        }

        /// <summary>
        /// Build a dummy SubmissionInfo
        /// </summary>
        public static SubmissionInfo CreateDebugSubmissionInfo()
        {
            return new SubmissionInfo()
            {
                SchemaVersion = 1,
                FullyMatchedID = 3,
                PartiallyMatchedIDs = [0, 1, 2, 3],
                Added = DateTime.UtcNow,
                LastModified = DateTime.UtcNow,

                CommonDiscInfo = new CommonDiscInfoSection()
                {
                    System = SabreTools.RedumpLib.Data.RedumpSystem.IBMPCcompatible,
                    Media = DiscType.BD128,
                    Title = "Game Title",
                    ForeignTitleNonLatin = "Foreign Game Title",
                    DiscNumberLetter = "1",
                    DiscTitle = "Install Disc",
                    Category = DiscCategory.Games,
                    Region = Region.World,
                    Languages = [Language.English, Language.Spanish, Language.French],
                    LanguageSelection = [LanguageSelection.BiosSettings],
                    Serial = "Disc Serial",
                    Layer0MasteringRing = "L0 Mastering Ring",
                    Layer0MasteringSID = "L0 Mastering SID",
                    Layer0ToolstampMasteringCode = "L0 Toolstamp",
                    Layer0MouldSID = "L0 Mould SID",
                    Layer0AdditionalMould = "L0 Additional Mould",
                    Layer1MasteringRing = "L1 Mastering Ring",
                    Layer1MasteringSID = "L1 Mastering SID",
                    Layer1ToolstampMasteringCode = "L1 Toolstamp",
                    Layer1MouldSID = "L1 Mould SID",
                    Layer1AdditionalMould = "L1 Additional Mould",
                    Layer2MasteringRing = "L2 Mastering Ring",
                    Layer2MasteringSID = "L2 Mastering SID",
                    Layer2ToolstampMasteringCode = "L2 Toolstamp",
                    Layer3MasteringRing = "L3 Mastering Ring",
                    Layer3MasteringSID = "L3 Mastering SID",
                    Layer3ToolstampMasteringCode = "L3 Toolstamp",
                    RingWriteOffset = "+12",
                    Barcode = "UPC Barcode",
                    EXEDateBuildDate = "19xx-xx-xx",
                    ErrorsCount = "0",
                    Comments = "Comment data line 1\r\nComment data line 2",
                    CommentsSpecialFields = new Dictionary<SiteCode, string>()
                    {
                        [SiteCode.ISBN] = "ISBN",
                    },
                    Contents = "Special contents 1\r\nSpecial contents 2",
                    ContentsSpecialFields = new Dictionary<SiteCode, string>()
                    {
                        [SiteCode.PlayableDemos] = "Game Demo 1",
                    },
                },

                VersionAndEditions = new VersionAndEditionsSection()
                {
                    Version = "Original",
                    VersionDatfile = "Alt",
                    CommonEditions = ["Taikenban"],
                    OtherEditions = "Rerelease",
                },

                EDC = new EDCSection()
                {
                    EDC = YesNo.Yes,
                },

                ParentCloneRelationship = new ParentCloneRelationshipSection()
                {
                    ParentID = "12345",
                    RegionalParent = false,
                },

                Extras = new ExtrasSection()
                {
                    PVD = "PVD with a stupidly long line and nothing else but a little more\nPVD with a stupidly long line and nothing else but a little more\nPVD with a stupidly long line and nothing else but a little more\nPVD with a stupidly long line and nothing else but a little more\nPVD with a stupidly long line and nothing else but a little more\nPVD with a stupidly long line and nothing else but a little more\n",
                    DiscKey = "Disc key",
                    DiscID = "Disc ID",
                    PIC = "PIC",
                    Header = "Header",
                    BCA = "BCA",
                    SecuritySectorRanges = "SSv1 Ranges",
                },

                CopyProtection = new CopyProtectionSection()
                {
                    AntiModchip = YesNo.Yes,
                    LibCrypt = YesNo.No,
                    LibCryptData = "LibCrypt data",
                    Protection = "List of protections",
                    SecuROMData = "SecuROM data",
                },

                DumpersAndStatus = new DumpersAndStatusSection()
                {
                    Status = DumpStatus.TwoOrMoreGreen,
                    Dumpers = ["Dumper1", "Dumper2"],
                    OtherDumpers = "Dumper3",
                },

                TracksAndWriteOffsets = new TracksAndWriteOffsetsSection()
                {
                    ClrMameProData = "Datfile",
                    Cuesheet = "Cuesheet",
                    CommonWriteOffsets = [0, 12, -12],
                    OtherWriteOffsets = "-2",
                },

                SizeAndChecksums = new SizeAndChecksumsSection()
                {
                    Layerbreak = 0,
                    Layerbreak2 = 1,
                    Layerbreak3 = 2,
                    Size = 12345,
                    CRC32 = "CRC32",
                    MD5 = "MD5",
                    SHA1 = "SHA1",
                },

                DumpingInfo = new DumpingInfoSection()
                {
                    DumpingProgram = "DiscImageCreator 20500101",
                    DumpingDate = DateTime.UtcNow.ToString("yyyy-MM-dd HH:mm:ss"),
                    Manufacturer = "ATAPI",
                    Model = "Optical Drive",
                    Firmware = "1.23",
                    ReportedDiscType = "CD-R",
                },

                Artifacts = new Dictionary<string, string>()
                {
                    ["Sample Artifact"] = "Sample Data",
                },
            };
        }

        /// <summary>
        /// Toggle the Start/Stop button
        /// </summary>
        public void ToggleStartStop()
        {
            // Dump or stop the dump
            if (StartStopButtonText as string == StartDumpingValue)
            {
                StartDumping();
            }
            else if (StartStopButtonText as string == StopDumpingValue)
            {
                VerboseLogLn("Canceling dumping process...");
                _environment?.CancelDumping();
                CopyProtectScanButtonEnabled = true;
            }
        }

        /// <summary>
        /// Update the internal options from a closed OptionsWindow
        /// </summary>
        /// <param name="savedSettings">Indicates if the settings were saved or not</param>
        /// <param name="newOptions">Options representing the new, saved values</param>
        public void UpdateOptions(bool savedSettings, Options? newOptions)
        {
            // Get which options to save
            var optionsToSave = savedSettings ? newOptions : Options;

            // Ensure the first run flag is unset
            var continuingOptions = new Options(optionsToSave) { FirstRun = false };
            Options = continuingOptions;

            // If settings were changed, reinitialize the UI
            if (savedSettings)
                InitializeUIValues(removeEventHandlers: true, rebuildPrograms: true, rescanDrives: true);
        }

        #endregion

        #region UI Functionality

        /// <summary>
        /// Performs UI value setup end to end
        /// </summary>
        /// <param name="removeEventHandlers">Whether event handlers need to be removed first</param>
        /// <param name="rebuildPrograms">Whether the available program list should be rebuilt</param>
        /// <param name="rescanDrives">Whether drives should be rescanned or not</param>
        public void InitializeUIValues(bool removeEventHandlers, bool rebuildPrograms, bool rescanDrives)
        {
            // Disable the dumping button
            StartStopButtonEnabled = false;

            // Safely check the parameters box, just in case
            if (ParametersCheckBoxEnabled == false)
            {
                bool cachedCanExecuteSelectionChanged = CanExecuteSelectionChanged;
                DisableEventHandlers();
                ParametersCheckBoxEnabled = true;
                if (cachedCanExecuteSelectionChanged) EnableEventHandlers();
            }

            // Remove event handlers to ensure ordering
            if (removeEventHandlers)
                DisableEventHandlers();

            // Populate the list of drives and determine the system
            if (rescanDrives)
            {
                Status = "Creating drive list, please wait!";
                PopulateDrives();
            }
            else
            {
                DetermineSystemType();
            }

            // Determine current media type, if possible
            PopulateMediaType();
            CacheCurrentDiscType();
            SetCurrentDiscType();

            // Set the dumping program
            if (rebuildPrograms)
                PopulateInternalPrograms();

            // Set the initial environment and UI values
            SetSupportedDriveSpeed();
            _environment = DetermineEnvironment();
            GetOutputNames(true);
            EnsureDiscInformation();

            // Enable event handlers
            EnableEventHandlers();

            // Enable the dumping button, if necessary
            StartStopButtonEnabled = ShouldEnableDumpingButton();
        }

        /// <summary>
        /// Performs a fast update of the output path while skipping disc checks
        /// </summary>
        /// <param name="removeEventHandlers">Whether event handlers need to be removed first</param>
        public void FastUpdateLabel(bool removeEventHandlers)
        {
            // Disable the dumping button
            StartStopButtonEnabled = false;

            // Safely check the parameters box, just in case
            if (ParametersCheckBoxEnabled == false)
            {
                bool cachedCanExecuteSelectionChanged = CanExecuteSelectionChanged;
                DisableEventHandlers();
                ParametersCheckBoxEnabled = true;
                if (cachedCanExecuteSelectionChanged) EnableEventHandlers();
            }

            // Remove event handlers to ensure ordering
            if (removeEventHandlers)
                DisableEventHandlers();

            // Refresh the drive info
            CurrentDrive?.RefreshDrive();

            // Set the initial environment and UI values
            _environment = DetermineEnvironment();
            GetOutputNames(true);
            EnsureDiscInformation();

            // Enable event handlers
            EnableEventHandlers();

            // Enable the dumping button, if necessary
            StartStopButtonEnabled = ShouldEnableDumpingButton();
        }

        /// <summary>
        /// Enable all textbox and combobox event handlers
        /// </summary>
        private void EnableEventHandlers()
        {
            CanExecuteSelectionChanged = true;
        }

        /// <summary>
        /// Disable all textbox and combobox event handlers
        /// </summary>
        private void DisableEventHandlers()
        {
            CanExecuteSelectionChanged = false;
        }

        #endregion

        #region Logging

        /// <summary>
        /// Enqueue text to the log
        /// </summary>
        /// <param name="text">Text to write to the log</param>
        private void Log(string text)
        {
            _logger?.Invoke(LogLevel.USER, text);
        }

        /// <summary>
        /// Enqueue text with a newline to the log
        /// </summary>
        /// <param name="text">Text to write to the log</param>
        private void LogLn(string text) => Log(text + "\n");

        /// <summary>
        /// Enqueue error text to the log
        /// </summary>
        /// <param name="text">Text to write to the log</param>
        private void ErrorLog(string text)
        {
            _logger?.Invoke(LogLevel.ERROR, text);
        }

        /// <summary>
        /// Enqueue error text with a newline to the log
        /// </summary>
        /// <param name="text">Text to write to the log</param>
        private void ErrorLogLn(string text) => ErrorLog(text + "\n");

        /// <summary>
        /// Enqueue secret text to the log
        /// </summary>
        /// <param name="text">Text to write to the log</param>
        private void SecretLog(string text)
        {
            _logger?.Invoke(LogLevel.SECRET, text);
        }

        /// <summary>
        /// Enqueue secret text with a newline to the log
        /// </summary>
        /// <param name="text">Text to write to the log</param>
        private void SecretLogLn(string text) => SecretLog(text + "\n");

        /// <summary>
        /// Enqueue verbose text to the log
        /// </summary>
        /// <param name="text">Text to write to the log</param>
        private void VerboseLog(string text)
        {
            if (_logger != null && Options.VerboseLogging)
                _logger(LogLevel.VERBOSE, text);
        }

        /// <summary>
        /// Enqueue verbose text with a newline to the log
        /// </summary>
        /// <param name="text">Text to write to the log</param>
        private void VerboseLogLn(string text)
        {
            if (Options.VerboseLogging)
                VerboseLog(text + "\n");
        }

        #endregion

        #region Helpers

        /// <summary>
        /// Cache the current disc type to internal variable
        /// </summary>
        private void CacheCurrentDiscType()
        {
            // If the selected item is invalid, we just skip
            if (CurrentDrive == null)
                return;

            // Get reasonable default values based on the current system
            var mediaTypes = CurrentSystem.MediaTypes();
            MediaType? defaultMediaType = mediaTypes.Count > 0 ? mediaTypes[0] : MediaType.CDROM;
            if (defaultMediaType == MediaType.NONE)
                defaultMediaType = MediaType.CDROM;

            // If we're skipping detection, set the default value
            if (Options.SkipMediaTypeDetection)
            {
                VerboseLogLn($"Media type detection disabled, defaulting to {defaultMediaType.LongName()}.");
                CurrentMediaType = defaultMediaType;
            }
            // If the drive is marked active, try to read from it
            else if (CurrentDrive.MarkedActive)
            {
                VerboseLog($"Trying to detect media type for drive {CurrentDrive.Name} [{CurrentDrive.DriveFormat}] using size and filesystem.. ");
                MediaType? detectedMediaType = CurrentDrive.GetMediaType(CurrentSystem);

                // If we got either an error or no media, default to the current System default
                if (detectedMediaType == null)
                {
                    VerboseLogLn($"Could not detect media type, defaulting to {defaultMediaType.LongName()}.");
                    CurrentMediaType = defaultMediaType;
                }
                else
                {
                    VerboseLogLn($"Detected {detectedMediaType.LongName()}.");
                    _detectedMediaType = detectedMediaType;
                    CurrentMediaType = detectedMediaType;
                }
            }

            // All other cases, just use the default
            else
            {
                VerboseLogLn($"Drive marked as empty, defaulting to {defaultMediaType.LongName()}.");
                CurrentMediaType = defaultMediaType;
            }
        }

        /// <summary>
        /// Create a DumpEnvironment with all current settings
        /// </summary>
        /// <returns>Filled DumpEnvironment Parent</returns>
        private DumpEnvironment DetermineEnvironment()
        {
            return new DumpEnvironment(
                Options,
                EvaluateOutputPath(OutputPath),
                CurrentDrive,
                CurrentSystem,
                CurrentMediaType,
                CurrentProgram,
                Parameters);
        }

        /// <summary>
        /// Determine and set the current system type, if allowed
        /// </summary>
        private void DetermineSystemType()
        {
            if (Drives == null || Drives.Count == 0 || CurrentDrive == null)
            {
                VerboseLogLn("Skipping system type detection because no valid drives found!");
            }
            else if (CurrentDrive?.MarkedActive != true)
            {
                VerboseLogLn("Skipping system type detection because drive not marked as active!");
            }
            else if (!Options.SkipSystemDetection)
            {
                VerboseLog($"Trying to detect system for drive {CurrentDrive.Name}.. ");
                var currentSystem = GetRedumpSystem(CurrentDrive);
                VerboseLogLn(currentSystem == null ? $"unable to detect, defaulting to {Options.DefaultSystem.LongName()}" : ($"detected {currentSystem.LongName()}."));
                currentSystem ??= Options.DefaultSystem;

                if (currentSystem != null)
                {
                    int sysIndex = Systems.FindIndex(s => s == currentSystem);
                    CurrentSystem = Systems[sysIndex];
                }
            }
            else if (Options.SkipSystemDetection && Options.DefaultSystem != null)
            {
                var currentSystem = Options.DefaultSystem;
                VerboseLogLn($"System detection disabled, defaulting to {currentSystem.LongName()}.");
                int sysIndex = Systems.FindIndex(s => s == currentSystem);
                CurrentSystem = Systems[sysIndex];
            }
        }

        /// <summary>
        /// Disable all UI elements during dumping
        /// </summary>
        public void DisableAllUIElements()
        {
            OptionsMenuItemEnabled = false;
            CheckDumpMenuItemEnabled = false;
            CreateIRDMenuItemEnabled = false;
            SystemTypeComboBoxEnabled = false;
            MediaTypeComboBoxEnabled = false;
            OutputPathTextBoxEnabled = false;
            OutputPathBrowseButtonEnabled = false;
            DriveLetterComboBoxEnabled = false;
            DriveSpeedComboBoxEnabled = false;
            DumpingProgramComboBoxEnabled = false;
            EnableParametersCheckBoxEnabled = false;
            StartStopButtonText = StopDumpingValue;
            MediaScanButtonEnabled = false;
            UpdateVolumeLabelEnabled = false;
            CopyProtectScanButtonEnabled = false;
        }

        /// <summary>
        /// Enable all UI elements after dumping
        /// </summary>
        public void EnableAllUIElements()
        {
            OptionsMenuItemEnabled = true;
            CheckDumpMenuItemEnabled = true;
            CreateIRDMenuItemEnabled = true;
            SystemTypeComboBoxEnabled = true;
            MediaTypeComboBoxEnabled = true;
            OutputPathTextBoxEnabled = true;
            OutputPathBrowseButtonEnabled = true;
            DriveLetterComboBoxEnabled = true;
            DriveSpeedComboBoxEnabled = true;
            DumpingProgramComboBoxEnabled = true;
            EnableParametersCheckBoxEnabled = true;
            StartStopButtonText = StartDumpingValue;
            MediaScanButtonEnabled = true;
            UpdateVolumeLabelEnabled = true;
            CopyProtectScanButtonEnabled = true;
        }

        /// <summary>
        /// Ensure information is consistent with the currently selected disc type
        /// </summary>
        public void EnsureDiscInformation()
        {
            // Get the current environment information
            _environment = DetermineEnvironment();

            // Get the status to write out
            ResultEventArgs result = _environment.GetSupportStatus();
            if (CurrentProgram == InternalProgram.NONE)
                Status = "No dumping program found";
            else
                Status = result.Message;

            // Enable or disable the button
            StartStopButtonEnabled = result && ShouldEnableDumpingButton();

            // If we're in a type that doesn't support drive speeds
            DriveSpeedComboBoxEnabled = _environment.DoesSupportDriveSpeed();

            // If input params are enabled, generate the full parameters from the environment
            if (ParametersCheckBoxEnabled)
            {
                var generated = _environment.GetFullParameters(DriveSpeed);
                if (generated != null)
                    Parameters = generated;
            }
        }

        /// <summary>
        /// Replaces %-delimited variables inside a path string with their values
        /// </summary>
        /// <param name="outputPath">Path to be evaluated</param>
        /// <returns>String with %-delimited variables evaluated</returns>
        public string EvaluateOutputPath(string outputPath)
        {
            string systemLong = _currentSystem.LongName() ?? "Unknown System";
            if (string.IsNullOrEmpty(systemLong))
                systemLong = "Unknown System";
            string systemShort = _currentSystem.ShortName() ?? "unknown";
            if (string.IsNullOrEmpty(systemShort))
                systemShort = "unknown";
            string mediaLong = _currentMediaType.LongName() ?? "Unknown Media";
            if (string.IsNullOrEmpty(mediaLong))
                mediaLong = "Unknown Media";
            string program = _currentProgram.ToString() ?? "Unknown Program";
            if (string.IsNullOrEmpty(program))
                program = "Unknown Program";
            string programShort = program == "DiscImageCreator" ? "DIC" : program;
            if (string.IsNullOrEmpty(programShort))
                programShort = "Unknown Program";
            string label = GetFormattedVolumeLabel(_currentDrive) ?? "track";
            if (string.IsNullOrEmpty(label))
                label = "track";
            string date = DateTime.Today.ToString("yyyyMMdd");
            if (string.IsNullOrEmpty(date))
                date = "UNKNOWN";
            string datetime = DateTime.Now.ToString("yyyyMMdd-HHmmss");
            if (string.IsNullOrEmpty(datetime))
                datetime = "UNKNOWN";

            return outputPath
                .Replace("%SYSTEM%", systemLong)
                .Replace("%SYS%", systemShort.ToUpperInvariant())
                .Replace("%sys%", systemShort)
                .Replace("%MEDIA%", mediaLong)
                .Replace("%PROGRAM%", program)
                .Replace("%PROG%", programShort)
                .Replace("%LABEL%", label)
                .Replace("%DATE%", date)
                .Replace("%DATETIME%", datetime);
        }

        /// <summary>
        /// Get the default output directory name from the currently selected drive
        /// </summary>
        /// <param name="driveChanged">Force an updated name if the drive letter changes</param>
        public void GetOutputNames(bool driveChanged)
        {
            if (Drives == null || Drives.Count == 0 || CurrentDrive == null)
            {
                VerboseLogLn("Skipping output name building because no valid drives found!");
                return;
            }

            // Get path pieces that are used in all branches
            string defaultOutputPath = Options.DefaultOutputPath ?? "ISO";
            string extension = _environment?.GetDefaultExtension(CurrentMediaType) ?? ".bin";
            string label = GetFormattedVolumeLabel(CurrentDrive) ?? CurrentSystem.LongName() ?? "track";
            string defaultFilename = $"{label}{extension}";

            // If no path exists, set one using default values
            if (string.IsNullOrEmpty(OutputPath))
            {
#if NET20 || NET35
                OutputPath = Path.Combine(Path.Combine(defaultOutputPath, label), defaultFilename);
#else
                OutputPath = Path.Combine(defaultOutputPath, label, defaultFilename);
#endif
                return;
            }

            // For all other cases, separate the last path
            string lastPath = FrontendTool.NormalizeOutputPaths(OutputPath, false);
            string lastDirectory = Path.GetDirectoryName(lastPath) ?? string.Empty;
            string lastFilename = Path.GetFileNameWithoutExtension(lastPath);

            // Set the output filename, if we changed drives
            if (driveChanged)
            {
                // If the previous path is exactly the default path and last filename
                if (lastDirectory.EndsWith(Path.Combine(defaultOutputPath, lastFilename)))
                    lastDirectory = Path.GetDirectoryName(lastDirectory) ?? string.Empty;

                // Create the output path
                if (lastDirectory == defaultOutputPath)
#if NET20 || NET35
                    OutputPath = Path.Combine(Path.Combine(lastDirectory, label), defaultFilename);
#else
                    OutputPath = Path.Combine(lastDirectory, label, defaultFilename);
#endif
                else
                    OutputPath = Path.Combine(lastDirectory, defaultFilename);
            }

            // Otherwise, reset the extension of the currently set path
            else
            {
                lastFilename = $"{lastFilename}{extension}";
                OutputPath = Path.Combine(lastDirectory, lastFilename);
            }
        }

        /// <summary>
        /// Get the current system from drive
        /// </summary>
        private static RedumpSystem? GetRedumpSystem(Drive? drive)
        {
            // If the drive does not exist, we can't do anything
            if (drive == null)
                return null;

            // If we can't read the media in that drive, we can't do anything
            if (string.IsNullOrEmpty(drive.Name) || !Directory.Exists(drive.Name))
                return null;

            // We're going to assume for floppies, HDDs, and removable drives
            if (drive.InternalDriveType != InternalDriveType.Optical)
                return RedumpSystem.IBMPCcompatible;

            // Check volume labels first
            RedumpSystem? systemFromLabel = FrontendTool.GetRedumpSystemFromVolumeLabel(drive.VolumeLabel);
            if (systemFromLabel != null)
                return systemFromLabel;

            // Get a list of files for quicker checking
            #region Arcade

            // funworld Photo Play
            if (File.Exists(Path.Combine(drive.Name, "PP.INF"))
                && Directory.Exists(Path.Combine(drive.Name, "PPINC")))
            {
                return RedumpSystem.funworldPhotoPlay;
            }

            // Konami Python 2
            if (Directory.Exists(Path.Combine(drive.Name, "PY2.D")))
            {
                return RedumpSystem.KonamiPython2;
            }

            #endregion

            #region Consoles

            // Bandai Playdia Quick Interactive System
            try
            {
                List<string> files = [.. Directory.GetFiles(drive.Name, "*", SearchOption.TopDirectoryOnly)];

                if (files.Exists(f => f.EndsWith(".AJS", StringComparison.OrdinalIgnoreCase))
                    && files.Exists(f => f.EndsWith(".GLB", StringComparison.OrdinalIgnoreCase)))
                {
                    return RedumpSystem.BandaiPlaydiaQuickInteractiveSystem;
                }
            }
            catch { }

            // Bandai Pippin
            if (File.Exists(Path.Combine(drive.Name, "PippinAuthenticationFile")))
            {
                return RedumpSystem.BandaiPippin;
            }

            // Commodore CDTV/CD32
#if NET20 || NET35
            if (File.Exists(Path.Combine(Path.Combine(drive.Name, "S"), "STARTUP-SEQUENCE")))
#else
            if (File.Exists(Path.Combine(drive.Name, "S", "STARTUP-SEQUENCE")))
#endif
            {
                if (File.Exists(Path.Combine(drive.Name, "CDTV.TM")))
                    return RedumpSystem.CommodoreAmigaCDTV;
                else
                    return RedumpSystem.CommodoreAmigaCD32;
            }

            // Mattel HyperScan -- TODO: May need case-insensitivity added
            if (File.Exists(Path.Combine(drive.Name, "hyper.exe")))
            {
                return RedumpSystem.MattelHyperScan;
            }

            // Mattel Fisher-Price iXL
#if NET20 || NET35
            if (File.Exists(Path.Combine(Path.Combine(drive.Name, "iXL"), "iXLUpdater.exe")))
#else
            if (File.Exists(Path.Combine(drive.Name, "iXL", "iXLUpdater.exe")))
#endif
            {
                return RedumpSystem.MattelFisherPriceiXL;
            }

            // Microsoft Xbox 360
            try
            {
                if (Directory.Exists(Path.Combine(drive.Name, "$SystemUpdate"))
                    && IOExtensions.SafeGetFiles(Path.Combine(drive.Name, "$SystemUpdate")).Length > 0
                    && drive.TotalSize <= 500_000_000)
                {
                    return RedumpSystem.MicrosoftXbox360;
                }
            }
            catch { }

            // Microsoft Xbox One and Series X
            try
            {
                if (Directory.Exists(Path.Combine(drive.Name, "MSXC")))
                {
                    try
                    {
#if NET20 || NET35
                        string catalogjs = Path.Combine(drive.Name, Path.Combine("MSXC", Path.Combine("Metadata", "catalog.js")));
#else
                        string catalogjs = Path.Combine(drive.Name, "MSXC", "Metadata", "catalog.js");
#endif
                        if (!File.Exists(catalogjs))
                            return RedumpSystem.MicrosoftXboxOne;

                        SabreTools.Models.Xbox.Catalog? catalog = SabreTools.Serialization.Deserializers.Catalog.DeserializeFile(catalogjs);
                        if (catalog != null && catalog.Version != null && catalog.Packages != null)
                        {
                            if (!double.TryParse(catalog.Version, out double version))
                                return RedumpSystem.MicrosoftXboxOne;

                            if (version < 4)
                                return RedumpSystem.MicrosoftXboxOne;

                            foreach (var package in catalog.Packages)
                            {
                                if (package.Generation != "9")
                                    return RedumpSystem.MicrosoftXboxOne;
                            }

                            return RedumpSystem.MicrosoftXboxSeriesXS;
                        }
                    }
                    catch
                    {
                        return RedumpSystem.MicrosoftXboxOne;
                    }
                }
            }
            catch { }

            // Sega Dreamcast
            if (File.Exists(Path.Combine(drive.Name, "IP.BIN")))
            {
                return RedumpSystem.SegaDreamcast;
            }

            // Sega Mega-CD / Sega-CD
#if NET20 || NET35
            if (File.Exists(Path.Combine(Path.Combine(drive.Name, "_BOOT"), "IP.BIN"))
                || File.Exists(Path.Combine(Path.Combine(drive.Name, "_BOOT"), "SP.BIN"))
                || File.Exists(Path.Combine(Path.Combine(drive.Name, "_BOOT"), "SP_AS.BIN"))
                || File.Exists(Path.Combine(drive.Name, "FILESYSTEM.BIN")))
#else
            if (File.Exists(Path.Combine(drive.Name, "_BOOT", "IP.BIN"))
                || File.Exists(Path.Combine(drive.Name, "_BOOT", "SP.BIN"))
                || File.Exists(Path.Combine(drive.Name, "_BOOT", "SP_AS.BIN"))
                || File.Exists(Path.Combine(drive.Name, "FILESYSTEM.BIN")))
#endif
            {
                return RedumpSystem.SegaMegaCDSegaCD;
            }

            // Sony PlayStation and Sony PlayStation 2
            string psxExePath = Path.Combine(drive.Name, "PSX.EXE");
            string systemCnfPath = Path.Combine(drive.Name, "SYSTEM.CNF");
            if (File.Exists(systemCnfPath))
            {
                // Check for either BOOT or BOOT2
                var systemCnf = new IniFile(systemCnfPath);
                if (systemCnf.ContainsKey("BOOT"))
                    return RedumpSystem.SonyPlayStation;
                else if (systemCnf.ContainsKey("BOOT2"))
                    return RedumpSystem.SonyPlayStation2;
            }
            else if (File.Exists(psxExePath))
            {
                return RedumpSystem.SonyPlayStation;
            }

            // Sony PlayStation 3
            try
            {
                if (Directory.Exists(Path.Combine(drive.Name, "PS3_GAME"))
                    || Directory.Exists(Path.Combine(drive.Name, "PS3_UPDATE"))
                    || File.Exists(Path.Combine(drive.Name, "PS3_DISC.SFB")))
                {
                    return RedumpSystem.SonyPlayStation3;
                }
            }
            catch { }

            // Sony PlayStation 4
            // There are more possible paths that could be checked.
            //  There are some entries that can be found on most PS4 discs:
            //    "/app/GAME_SERIAL/app.pkg"
            //    "/bd/param.sfo"
            //    "/license/rif"
            // There are also extra files that can be found on some discs:
            //    "/patch/GAME_SERIAL/patch.pkg" can be found in Redump entry 66816.
            //        Originally on disc as "/patch/CUSA11302/patch.pkg".
            //        Is used as an on-disc update for the base game app without needing to get update from the internet.
            //    "/addcont/GAME_SERIAL/CONTENT_ID/ac.pkg" can be found in Redump entry 97619.
            //        Originally on disc as "/addcont/CUSA00288/FFXIVEXPS400001A/ac.pkg".
#if NET20 || NET35
            if (File.Exists(Path.Combine(Path.Combine(Path.Combine(drive.Name, "PS4"), "UPDATE"), "PS4UPDATE.PUP")))
#else
            if (File.Exists(Path.Combine(drive.Name, "PS4", "UPDATE", "PS4UPDATE.PUP")))
#endif
            {
                return RedumpSystem.SonyPlayStation4;
            }

            // V.Tech V.Flash / V.Smile Pro
            if (File.Exists(Path.Combine(drive.Name, "0SYSTEM")))
            {
                return RedumpSystem.VTechVFlashVSmilePro;
            }

            #endregion

            #region Computers

            // Sharp X68000
            if (File.Exists(Path.Combine(drive.Name, "COMMAND.X")))
            {
                return RedumpSystem.SharpX68000;
            }

            #endregion

            #region Video Formats

            // BD-Video
            if (Directory.Exists(Path.Combine(drive.Name, "BDMV")))
            {
                // Technically BD-Audio has this as well, but it's hard to split that out right now
                return RedumpSystem.BDVideo;
            }

            // DVD-Audio and DVD-Video
            try
            {
                if (Directory.Exists(Path.Combine(drive.Name, "AUDIO_TS"))
                    && IOExtensions.SafeGetFiles(Path.Combine(drive.Name, "AUDIO_TS")).Length > 0)
                {
                    return RedumpSystem.DVDAudio;
                }

                else if (Directory.Exists(Path.Combine(drive.Name, "VIDEO_TS"))
                    && IOExtensions.SafeGetFiles(Path.Combine(drive.Name, "VIDEO_TS")).Length > 0)
                {
                    return RedumpSystem.DVDVideo;
                }
            }
            catch { }

            // HD-DVD-Video
            try
            {
                if (Directory.Exists(Path.Combine(drive.Name, "HVDVD_TS"))
                    && IOExtensions.SafeGetFiles(Path.Combine(drive.Name, "HVDVD_TS")).Length > 0)
                {
                    return RedumpSystem.HDDVDVideo;
                }
            }
            catch { }

            // Photo CD
            try
            {
                if (Directory.Exists(Path.Combine(drive.Name, "PHOTO_CD"))
                    && IOExtensions.SafeGetFiles(Path.Combine(drive.Name, "PHOTO_CD")).Length > 0)
                {
                    return RedumpSystem.PhotoCD;
                }
            }
            catch { }

            // VCD
            try
            {
                if (Directory.Exists(Path.Combine(drive.Name, "VCD"))
                    && IOExtensions.SafeGetFiles(Path.Combine(drive.Name, "VCD")).Length > 0)
                {
                    return RedumpSystem.VideoCD;
                }
            }
            catch { }

            #endregion

            // Default return
            return null;
        }

        /// <summary>
        /// Process the current custom parameters back into UI values
        /// </summary>
        public void ProcessCustomParameters()
        {
            // Set the execution context and processor
            if (_environment?.SetExecutionContext(Parameters) != true)
                return;
            if (_environment?.SetProcessor() != true)
                return;

            // Catch this in case there's an input path issue
            try
            {
                int driveIndex = Drives.ConvertAll(d => d.Name?[0] ?? '\0')
                    .IndexOf(_environment.ContextInputPath?[0] ?? default);
                CurrentDrive = (driveIndex != -1 ? Drives[driveIndex] : Drives[0]);
            }
            catch { }

            int driveSpeed = _environment.Speed ?? -1;
            if (driveSpeed > 0)
                DriveSpeed = driveSpeed;
            else
                _environment.Speed = DriveSpeed;

            // Disable change handling
            DisableEventHandlers();

            OutputPath = FrontendTool.NormalizeOutputPaths(_environment.ContextOutputPath, false);

            if (MediaTypes != null)
            {
                MediaType? mediaType = _environment.GetMediaType();
                if (mediaType != null)
                {
                    int mediaTypeIndex = MediaTypes.FindIndex(m => m == mediaType);
                    CurrentMediaType = (mediaTypeIndex > -1 ? MediaTypes[mediaTypeIndex] : MediaTypes[0]);
                }
            }

            // Reenable change handling
            EnableEventHandlers();
        }

        /// <summary>
        /// Scan and show copy protection for the current disc
        /// </summary>
        public async Task<string?> ScanAndShowProtection()
        {
            // Determine current environment, just in case
            _environment ??= DetermineEnvironment();

            // If we don't have a valid drive
            if (CurrentDrive?.Name == null)
            {
                ErrorLogLn("No valid drive found!");
                return null;
            }

            VerboseLogLn($"Scanning for copy protection in {CurrentDrive.Name}");

            var tempContent = Status;
            Status = "Scanning for copy protection... this might take a while!";

            // Disable UI elements
            OptionsMenuItemEnabled = false;

            SystemTypeComboBoxEnabled = false;
            MediaTypeComboBoxEnabled = false;

            OutputPathTextBoxEnabled = false;
            OutputPathBrowseButtonEnabled = false;
            DriveLetterComboBoxEnabled = false;
            DriveSpeedComboBoxEnabled = false;
            DumpingProgramComboBoxEnabled = false;
            EnableParametersCheckBoxEnabled = false;

            StartStopButtonEnabled = false;
            MediaScanButtonEnabled = false;
            UpdateVolumeLabelEnabled = false;
            CopyProtectScanButtonEnabled = false;

            var progress = new Progress<ProtectionProgress>();
            progress.ProgressChanged += ProgressUpdated;

            try
            {
                var protections = await ProtectionTool.RunProtectionScanOnPath(CurrentDrive.Name, Options, progress);
                var output = ProtectionTool.FormatProtections(protections);

                LogLn($"Detected the following protections in {CurrentDrive.Name}:\r\n\r\n{output}");
                return output;
            }
            catch (Exception ex)
            {
                ErrorLogLn($"Path could not be scanned! Exception information:\r\n\r\n{ex}");
                return null;
            }
            finally
            {
                // Reset the status
                Status = tempContent;

                // Enable UI elements
                OptionsMenuItemEnabled = true;

                SystemTypeComboBoxEnabled = true;
                MediaTypeComboBoxEnabled = true;

                OutputPathTextBoxEnabled = true;
                OutputPathBrowseButtonEnabled = true;
                DriveLetterComboBoxEnabled = true;
                DriveSpeedComboBoxEnabled = true;
                DumpingProgramComboBoxEnabled = true;
                EnableParametersCheckBoxEnabled = true;

                StartStopButtonEnabled = ShouldEnableDumpingButton();
                MediaScanButtonEnabled = true;
                UpdateVolumeLabelEnabled = true;
                CopyProtectScanButtonEnabled = true;
            }
        }

        /// <summary>
        /// Media label as read by Windows, formatted to avoid odd outputs
        /// If no volume label present, use PSX or PS2 serial if valid
        /// Otherwise, use "track" as volume label
        /// </summary>
        private static string? GetFormattedVolumeLabel(Drive? drive)
        {
            if (drive == null)
                return null;

            string? volumeLabel = DiscNotDetectedValue;
            if (!drive.MarkedActive)
                return volumeLabel;

            if (!string.IsNullOrEmpty(drive.VolumeLabel))
            {
                volumeLabel = drive.VolumeLabel;
            }
            else
            {
                // No Volume Label found, fallback to something sensible
                switch (GetRedumpSystem(drive))
                {
                    case RedumpSystem.SonyPlayStation:
                    case RedumpSystem.SonyPlayStation2:
                        string? serial = PhysicalTool.GetPlayStationSerial(drive);
                        volumeLabel = serial ?? "track";
                        break;

                    default:
                        volumeLabel = "track";
                        break;
                }
            }

            foreach (char c in Path.GetInvalidFileNameChars())
            {
                volumeLabel = volumeLabel?.Replace(c, '_');
            }

            return volumeLabel;
        }

        /// <summary>
        /// Set the current disc type in the combo box
        /// </summary>
        private void SetCurrentDiscType()
        {
            // If we don't have any selected media types, we don't care and return
            if (MediaTypes == null)
                return;

            // If we have a detected media type, use that first
            if (_detectedMediaType != null)
            {
                int detectedIndex = MediaTypes.FindIndex(kvp => kvp.Value == _detectedMediaType);
                if (detectedIndex > -1)
                {
                    CurrentMediaType = _detectedMediaType;
                    return;
                }
            }

            // If we have an invalid current type, we don't care and return
            if (CurrentMediaType == null || CurrentMediaType == MediaType.NONE)
                return;

            // Now set the selected item, if possible
            int index = MediaTypes.FindIndex(kvp => kvp.Value == CurrentMediaType);
            if (CurrentMediaType != null && index == -1)
                VerboseLogLn($"Disc of type '{CurrentMediaType.LongName()}' found, but the current system does not support it!");

            CurrentMediaType = (index > -1 ? MediaTypes[index] : MediaTypes[0]);
        }

        /// <summary>
        /// Set the drive speed based on reported maximum and user-defined option
        /// </summary>
        public void SetSupportedDriveSpeed()
        {
            // Set the drive speed list that's appropriate
            DriveSpeeds = InterfaceConstants.GetSpeedsForMediaType(CurrentMediaType);
            VerboseLogLn($"Supported media speeds: {string.Join(", ", [.. DriveSpeeds.ConvertAll(ds => ds.ToString())])}");

            // Set the selected speed
            int speed = FrontendTool.GetDefaultSpeedForMediaType(CurrentMediaType, Options);

            VerboseLogLn($"Setting drive speed to: {speed}");
            DriveSpeed = speed;
        }

        /// <summary>
        /// Determine if the dumping button should be enabled
        /// </summary>
        private bool ShouldEnableDumpingButton()
        {
            return Drives != null
                && Drives.Count > 0
                && CurrentSystem != null
                && CurrentMediaType != null
                && ProgramSupportsMedia();
        }

        /// <summary>
        /// Returns false if a given InternalProgram does not support a given MediaType
        /// </summary>
        private bool ProgramSupportsMedia()
        {
            // If the media type is not set, return false
            if (CurrentMediaType == null || CurrentMediaType == MediaType.NONE)
                return false;

            return CurrentProgram switch
            {
                // Aaru
                InternalProgram.Aaru when CurrentMediaType == MediaType.BluRay => true,
                InternalProgram.Aaru when CurrentMediaType == MediaType.CDROM => true,
                InternalProgram.Aaru when CurrentMediaType == MediaType.CompactFlash => true,
                InternalProgram.Aaru when CurrentMediaType == MediaType.DVD => true,
                InternalProgram.Aaru when CurrentMediaType == MediaType.GDROM => true,
                InternalProgram.Aaru when CurrentMediaType == MediaType.FlashDrive => true,
                InternalProgram.Aaru when CurrentMediaType == MediaType.FloppyDisk => true,
                InternalProgram.Aaru when CurrentMediaType == MediaType.HardDisk => true,
                InternalProgram.Aaru when CurrentMediaType == MediaType.HDDVD => true,
                InternalProgram.Aaru when CurrentMediaType == MediaType.NintendoGameCubeGameDisc => true,
                InternalProgram.Aaru when CurrentMediaType == MediaType.NintendoWiiOpticalDisc => true,
                InternalProgram.Aaru when CurrentMediaType == MediaType.NintendoWiiUOpticalDisc => true,
                InternalProgram.Aaru when CurrentMediaType == MediaType.SDCard => true,

                // DiscImageCreator
                InternalProgram.DiscImageCreator when CurrentMediaType == MediaType.BluRay => true,
                InternalProgram.DiscImageCreator when CurrentMediaType == MediaType.CDROM => true,
                InternalProgram.DiscImageCreator when CurrentMediaType == MediaType.CompactFlash => true,
                InternalProgram.DiscImageCreator when CurrentMediaType == MediaType.DVD => true,
                InternalProgram.DiscImageCreator when CurrentMediaType == MediaType.GDROM => true,
                InternalProgram.DiscImageCreator when CurrentMediaType == MediaType.FlashDrive => true,
                InternalProgram.DiscImageCreator when CurrentMediaType == MediaType.FloppyDisk => true,
                InternalProgram.DiscImageCreator when CurrentMediaType == MediaType.HardDisk => true,
                InternalProgram.DiscImageCreator when CurrentMediaType == MediaType.HDDVD => true,
                InternalProgram.DiscImageCreator when CurrentMediaType == MediaType.NintendoGameCubeGameDisc => true,
                InternalProgram.DiscImageCreator when CurrentMediaType == MediaType.NintendoWiiOpticalDisc => true,
                InternalProgram.DiscImageCreator when CurrentMediaType == MediaType.NintendoWiiUOpticalDisc => true,
                InternalProgram.DiscImageCreator when CurrentMediaType == MediaType.SDCard => true,

                // Redumper
                InternalProgram.Redumper when CurrentMediaType == MediaType.BluRay => true,
                InternalProgram.Redumper when CurrentMediaType == MediaType.CDROM => true,
                InternalProgram.Redumper when CurrentMediaType == MediaType.DVD => true,
                InternalProgram.Redumper when CurrentMediaType == MediaType.GDROM => true,
                InternalProgram.Redumper when CurrentMediaType == MediaType.HDDVD => true,
                InternalProgram.Redumper when CurrentMediaType == MediaType.NintendoGameCubeGameDisc => true,
                InternalProgram.Redumper when CurrentMediaType == MediaType.NintendoWiiOpticalDisc => true,
                InternalProgram.Redumper when CurrentMediaType == MediaType.NintendoWiiUOpticalDisc => true,

                // Default
                _ => false,
            };
        }

        /// <summary>
        /// Begin the dumping process using the given inputs
        /// </summary>
        public async void StartDumping()
        {
            // One last check to determine environment, just in case
            _environment = DetermineEnvironment();

            // Force an internal drive refresh in case the user entered things manually
            _environment.RefreshDrive();

            // If still in custom parameter mode, check that users meant to continue or not
            if (ParametersCheckBoxEnabled == false && _displayUserMessage != null)
            {
                bool? result = _displayUserMessage("Custom Changes", "It looks like you have custom parameters that have not been saved. Would you like to apply those changes before starting to dump?", 3, true);
                if (result == true)
                {
                    ParametersCheckBoxEnabled = true;
                    ProcessCustomParameters();
                }
                else if (result == null)
                {
                    return;
                }
                // If false, then we continue with the current known environment
            }

            try
            {
                // Run pre-dumping validation checks
                if (!ValidateBeforeDumping())
                    return;

                // Disable all UI elements apart from dumping button
                DisableAllUIElements();

                // Refresh the drive, if it wasn't null
                _environment.RefreshDrive();

                // Output to the label and log
                Status = "Starting dumping process... please wait!";
                LogLn("Starting dumping process... please wait!");
                LogLn("Look for the separate command window for more details");

                // Get progress indicators
                var resultProgress = new Progress<ResultEventArgs>();
                resultProgress.ProgressChanged += ProgressUpdated;
                var protectionProgress = new Progress<ProtectionProgress>();
                protectionProgress.ProgressChanged += ProgressUpdated;
                _environment.ReportStatus += ProgressUpdated;

                // Run the program with the parameters
                ResultEventArgs result = await _environment.Run(resultProgress);

                // If we didn't execute a dumping command we cannot get submission output
                if (!_environment.IsDumpingCommand())
                {
                    LogLn("No dumping command was run, submission information will not be gathered.");
                    Status = "Execution complete!";

                    // Reset all UI elements
                    EnableAllUIElements();
                    return;
                }

                // Verify dump output and save it
                if (result)
                {
                    result = await _environment.VerifyAndSaveDumpOutput(resultProgress, protectionProgress, _processUserInfo);
                }
                else
                {
                    ErrorLogLn(result.Message);
                    Status = "Execution failed!";
                }
            }
            catch (Exception ex)
            {
                ErrorLogLn(ex.ToString());
                Status = "An exception occurred!";
            }
            finally
            {
                // Reset all UI elements
                EnableAllUIElements();
            }
        }

        /// <summary>
        /// Toggle the parameters input box
        /// </summary>
        public void ToggleParameters()
        {
            if (ParametersCheckBoxEnabled == false)
            {
                OptionsMenuItemEnabled = false;

                SystemTypeComboBoxEnabled = false;
                MediaTypeComboBoxEnabled = false;

                OutputPathTextBoxEnabled = false;
                OutputPathBrowseButtonEnabled = false;
                DriveLetterComboBoxEnabled = false;
                DriveSpeedComboBoxEnabled = false;
                DumpingProgramComboBoxEnabled = false;
                ParametersTextBoxEnabled = true;

                MediaScanButtonEnabled = false;
                UpdateVolumeLabelEnabled = false;
                CopyProtectScanButtonEnabled = false;
            }
            else
            {
                ProcessCustomParameters();

                OptionsMenuItemEnabled = true;

                SystemTypeComboBoxEnabled = true;
                MediaTypeComboBoxEnabled = true;

                OutputPathTextBoxEnabled = true;
                OutputPathBrowseButtonEnabled = true;
                DriveLetterComboBoxEnabled = true;
                DriveSpeedComboBoxEnabled = true;
                DumpingProgramComboBoxEnabled = true;
                ParametersTextBoxEnabled = false;

                MediaScanButtonEnabled = true;
                UpdateVolumeLabelEnabled = true;
                CopyProtectScanButtonEnabled = true;
            }
        }

        /// <summary>
        /// Perform validation, including user input, before attempting to start dumping
        /// </summary>
        /// <returns>True if dumping should start, false otherwise</returns>
        private bool ValidateBeforeDumping()
        {
            if (Parameters == null || _environment == null)
                return false;

            // Validate that we have an output path of any sort
            if (string.IsNullOrEmpty(_environment.OutputPath))
            {
                if (_displayUserMessage != null)
                    _ = _displayUserMessage("Missing Path", "No output path was provided so dumping cannot continue.", 1, false);
                LogLn("Dumping aborted!");
                return false;
            }

            // Validate that the user explicitly wants an inactive drive to be considered for dumping
            if (!_environment.DriveMarkedActive && _displayUserMessage != null)
            {
                string message = "The currently selected drive does not appear to contain a disc! "
                    + (!_environment!.DetectedByWindows() ? $"This is normal for {_environment.SystemName} as the discs may not be readable on Windows. " : string.Empty)
                    + "Do you want to continue?";

                bool? mbresult = _displayUserMessage("No Disc Detected", message, 2, false);
                if (mbresult != true)
                {
                    LogLn("Dumping aborted!");
                    return false;
                }
            }

            // Pre-split the output path
            var outputDirectory = Path.GetDirectoryName(_environment!.OutputPath);
            string outputFilename = Path.GetFileName(_environment.OutputPath);

            // If a complete dump already exists
            bool foundFiles = _environment.FoundAllFiles(outputDirectory, outputFilename);
            if (foundFiles && _displayUserMessage != null)
            {
                bool? mbresult = _displayUserMessage("Overwrite?", "A complete dump already exists! Are you sure you want to overwrite?", 2, true);
                if (mbresult != true)
                {
                    LogLn("Dumping aborted!");
                    return false;
                }
            }
            else
            {
                // If a complete dump exists from a different program
                InternalProgram? programFound = _environment.CheckForMatchingProgram(outputDirectory, outputFilename);
                if (programFound != null && _displayUserMessage != null)
                {
                    bool? mbresult = _displayUserMessage("Overwrite?", $"A complete dump from {programFound} already exists! Dumping here may cause issues. Are you sure you want to overwrite?", 2, true);
                    if (mbresult != true)
                    {
                        LogLn("Dumping aborted!");
                        return false;
                    }
                }
            }

            // Validate that at least some space exists
            // TODO: Tie this to the size of the disc, type of disc, etc.
            string fullPath;
            if (string.IsNullOrEmpty(outputDirectory))
                fullPath = Path.GetFullPath(_environment.OutputPath);
            else
                fullPath = Path.GetFullPath(outputDirectory);

            var driveInfo = new DriveInfo(Path.GetPathRoot(fullPath) ?? string.Empty);
            if (driveInfo.AvailableFreeSpace < Math.Pow(2, 30) && _displayUserMessage != null)
            {
                bool? mbresult = _displayUserMessage("Low Space", "There is less than 1gb of space left on the target drive. Are you sure you want to continue?", 2, true);
                if (mbresult != true)
                {
                    LogLn("Dumping aborted!");
                    return false;
                }
            }

            // If nothing above fails, we want to continue
            return true;
        }

        /// <summary>
        /// Checks whether a internal program is found in its path
        /// </summary>
        /// <param name="program">Program to check for</param>
        /// <returns>True if the program is found, false otherwise</returns>
        private bool InternalProgramExists(InternalProgram program)
        {
            try
            {
                return program switch
                {
                    InternalProgram.Redumper => File.Exists(Options.RedumperPath),
                    InternalProgram.Aaru => File.Exists(Options.AaruPath),
                    InternalProgram.DiscImageCreator => File.Exists(Options.DiscImageCreatorPath),
                    _ => false,
                };
            }
            catch
            {
                return false;
            }
        }

        #endregion

        #region Progress Reporting

        /// <summary>
        /// Handler for Result ProgressChanged event
        /// </summary>
        private void ProgressUpdated(object? sender, StringEventArgs value)
        {
            try
            {
                LogLn(value);
            }
            catch { }
        }

        /// <summary>
        /// Handler for Result ProgressChanged event
        /// </summary>
        private void ProgressUpdated(object? sender, ResultEventArgs value)
        {
            var message = value?.Message;

            // Update the label with only the first line of output
            if (message != null && message.Contains("\n"))
                Status = value?.Message?.Split('\n')[0] + " (See log output)";
            else
                Status = value?.Message ?? string.Empty;

            // Log based on success or failure
            if (value != null && value)
                VerboseLogLn(message ?? string.Empty);
            else if (value != null && !value)
                ErrorLogLn(message ?? string.Empty);
        }

        /// <summary>
        /// Handler for ProtectionProgress ProgressChanged event
        /// </summary>
        private void ProgressUpdated(object? sender, ProtectionProgress value)
        {
            string message = $"{value.Percentage * 100:N2}%: {value.Filename} - {value.Protection}";
            Status = message;
            VerboseLogLn(message);
        }

        #endregion
    }
}