using Mono.Options;
using System.Text;
using Repackinator.Core.Actions;
using System.Diagnostics;
using Repackinator.Core.Models;
using Repackinator.Core.Logging;

namespace Repackinator.Shell.Console
{
    public static class ConsoleRepack
    {
        public const string Action = "Repack";
        public static string Input { get; set; } = string.Empty;
        public static string Output { get; set; } = string.Empty;
        public static string Unpack { get; set; } = string.Empty;
        public static string Grouping { get; set; } = "NONE";
        public static bool Uppercase { get; set; } = false;
        public static bool Recurse { get; set; } = false;
        public static bool NoSplit { get; set; } = false;
        public static string Log { get; set; } = string.Empty;
        public static bool Compress { get; set; } = false;
        public static bool Scrub { get; set; } = false;
        public static bool TrimScrub { get; set; } = false; 
        public static bool ShowHelp { get; set; } = false;
        public static bool Wait { get; set; } = false;

        public static OptionSet GetOptions()
        {
            return new OptionSet {
                { "i|input=", "Input folder", i => Input = i },
                { "o|output=", "Output folder", o => Output = o },
                { "p|unpack=", "Unpack folder for temporary extraction (optional)", p => Unpack = p},
                { "g|grouping=", "Grouping (None *default*, Region, Letter, RegionLetter, LetterRegion)", g => Grouping = g.ToUpper() },
                { "u|uppercase", "Uppercase", u => Uppercase = u != null },
                { "r|recurse", "Recurse (Traverse Subdirs)", r => Recurse = r != null },
                { "c|compress", "Compress (CCI)", c => Compress = c != null },
                { "s|scrub", "Scrub", s => Scrub = s != null },
                { "t|trimscrub", "TrimScrub", t => TrimScrub = t != null },
                { "n|nosplit", "No Split of output file", n => NoSplit = n != null },
                { "l|log=", "log file", l => Log = l },
                { "h|help", "show help", h => ShowHelp = h != null },
                { "w|wait", "Wait on exit", w => Wait = w != null }
            };
        }

        public static void ShowOptionDescription()
        {
            System.Console.WriteLine();
            System.Console.WriteLine("Repack Action...");
            System.Console.WriteLine();
            System.Console.WriteLine("This action is used to repackinate your collection of xbox disk images.");
            System.Console.WriteLine();
            GetOptions().WriteOptionDescriptions(System.Console.Out);
        }

        public static void Process(string version, string[] args)
        {
            try
            {
                var options = GetOptions();
                options.Parse(args);
                if (ShowHelp)
                {
                    ConsoleUtil.ShowHelpHeaderForAction(version, Action, options);
                    ConsoleUtil.ProcessWait(Wait);
                    return;
                }

                if (string.IsNullOrEmpty(Input))
                {
                    throw new OptionException("input not specified.", "input");
                }

                string input;
                try
                {
                    input = Path.GetFullPath(Input);
                }
                catch (ArgumentException)
                {
                    throw new OptionException("input is not a valid directory.", "input");
                }

                if (!Directory.Exists(input))
                {
                    throw new OptionException("input directory does not exist.", "input");
                }

                if (string.IsNullOrEmpty(Output))
                {
                    throw new OptionException("output not specified.", "output");
                }

                string output;
                try
                {
                    output = Path.GetFullPath(Output);
                }
                catch (ArgumentException)
                {
                    throw new OptionException("output is not a valid directory.", "output");
                }

                var groupingValue = GroupingOptionType.None;
                if (string.Equals(Grouping, "NONE"))
                {
                    groupingValue = GroupingOptionType.None;
                }
                else if (string.Equals(Grouping, "REGION"))
                {
                    groupingValue = GroupingOptionType.Region;
                }
                else if (string.Equals(Grouping, "LETTER"))
                {
                    groupingValue = GroupingOptionType.Letter;
                }
                else if (string.Equals(Grouping, "REGIONLETTER"))
                {
                    groupingValue = GroupingOptionType.RegionLetter;
                }
                else if (string.Equals(Grouping, "LETTERREGION"))
                {
                    groupingValue = GroupingOptionType.LetterRegion;
                }
                else
                {
                    throw new OptionException("grouping is not valid.", "grouping");
                }

                var compressValue = CompressOptionType.None;
                if (Compress)
                {
                    compressValue = CompressOptionType.CCI;
                }

                var scrubValue = ScrubOptionType.None;
                if (TrimScrub)
                {
                    scrubValue = ScrubOptionType.TrimScrub;
                }
                else if (Scrub)
                {
                    scrubValue = ScrubOptionType.Scrub;
                }

                string unpack;
                if (!string.IsNullOrEmpty(Unpack))
                {
                    try
                    {
                        unpack = Path.GetFullPath(Unpack);
                        if (!Directory.Exists(unpack))
                        {
                            Directory.CreateDirectory(unpack);
                        }
                    }
                    catch (ArgumentException)
                    {
                        throw new OptionException("unpack is not a valid directory.", "unpack");
                    }
                }

                if (!Directory.Exists(output))
                {
                    Directory.CreateDirectory(output);
                }

                string log;
                FileStream? logStream = null;
                if (!string.IsNullOrEmpty(Log))
                {
                    try
                    {
                        log = Path.GetFullPath(Log);
                        string? dir = Path.GetDirectoryName(log);
                        if (!string.IsNullOrEmpty(dir) && !Directory.Exists(dir))
                        {
                            Directory.CreateDirectory(dir);
                        }
                        logStream = File.OpenWrite(log);
                    }
                    catch (ArgumentException)
                    {
                        throw new OptionException("log is not a valid filepath.", "log");
                    }
                }

                var logger = new Action<LogMessage>((logMessage) =>
                {
                    var formattedTime = logMessage.Time.ToString("HH:mm:ss");
                    var message = $"{formattedTime} {logMessage.Level} - {logMessage.Message}";
                    System.Console.WriteLine(message);
                    logStream?.Write(Encoding.UTF8.GetBytes(message));
                });

                var config = new Config
                {
                    InputPath = Input,
                    OutputPath = Output,
                    UnpackPath = Unpack,
                    GroupingOption = groupingValue,
                    RecurseInput = Recurse,
                    Uppercase = Uppercase,
                    CompressOption = compressValue,
                    NoSplit = NoSplit,
                    ScrubOption = scrubValue,
                };

                var gameData = GameDataHelper.LoadGameData();

                var prevMessage = string.Empty;

                var previousProgress1 = -1.0f;
                var previousProgress2 = -1.0f;
                var progress = new Action<Repackinator.Core.Models.ProgressInfo>((progressInfo) =>
                {
                    if (!string.IsNullOrEmpty(progressInfo.Progress1Text) && progressInfo.Progress1Text != prevMessage)
                    {
                        if (!string.IsNullOrEmpty(prevMessage))
                        {
                            System.Console.WriteLine();
                        }
                        System.Console.WriteLine(progressInfo.Progress1Text);
                        prevMessage = progressInfo.Progress1Text;
                    }

                    var amount1 = (float)Math.Round(progressInfo.Progress1 * 100);
                    if (amount1 != previousProgress1)
                    {
                        if (amount1 < 10)
                        {
                            System.Console.Write($"Progress   {amount1}%");
                        }
                        else if (amount1 < 100)
                        {
                            System.Console.Write($"Progress  {amount1}%");
                        }
                        else
                        {
                            System.Console.Write($"Progress {amount1}%");
                        }
                        System.Console.CursorLeft = 0;
                        previousProgress1 = amount1;
                    }

                    if (progressInfo.Progress1 >= 1.0f && !string.IsNullOrEmpty(progressInfo.Progress2Text))
                    {
                        var amount2 = (float)Math.Round(progressInfo.Progress2 * 100);
                        if (amount2 != previousProgress2)
                        {
                            System.Console.WriteLine();
                            System.Console.Write($"{progressInfo.Progress2Text} - ");
                            if (amount2 < 10)
                            {
                                System.Console.Write($"Progress   {amount2}%");
                            }
                            else if (amount2 < 100)
                            {
                                System.Console.Write($"Progress  {amount2}%");
                            }
                            else
                            {
                                System.Console.Write($"Progress {amount2}%");
                            }
                            System.Console.CursorLeft = 0;
                            previousProgress2 = amount2;
                        }
                    }
                });

                var repacker = new Repacker();
                repacker.StartRepacking(gameData, config, progress, logger, new Stopwatch(), default);

                logStream?.Dispose();

                System.Console.WriteLine();
                System.Console.WriteLine("Repack completed.");
            }
            catch (OptionException e)
            {
                ConsoleUtil.ShowOptionException(e, Action, version);
            }

            ConsoleUtil.ProcessWait(Wait);
        }
    }
}