using Qrakhen.Qamp.Core;
using Qrakhen.Qamp.Core.Execution;
using Qrakhen.Qamp.Core.Logging;
using System.Text;

// do args here too, keep console, etc. output with exit, all the spicy things
// if no file is given for example in args just keep cli live until quit

void Init(string[] args)
{
    Console.WriteLine(string.Join(',', args));
    string command = args.Length > 1 ? args[0] : args.Length == 1 ? "run" : "cli";
    string target = args.Length > 1 ? args[1] : args.Length == 1 ? args[0] : "";
    switch (command) {
        case "run":
            // check wheter .sqi or .sqr file
            break;
        case "cli":

            break;
        case "read":

            break;
        case "digest":

            break;
        case "help":

            break;
    }
}

Init(args);

List<char> Ignored = [ '\0', '\b' ];
LoggerService.Default = LogLevel.Error;
List<byte[]> History = [];
int historyCursor = -1;
ConsoleKeyInfo input;
bool useSyntaxHighlighting = false;
(int x, int y) cursor = (0, 0);
ConsoleCode code = ConsoleCode.Error;
Runner runner = new(new Options());
do {
    Console.ForegroundColor = ConsoleColor.White;
    MemoryStream stream = new MemoryStream();
    Console.Write(" <: ");
    cursor = Console.GetCursorPosition();
    do {
        if (useSyntaxHighlighting)
            new ConsoleRenderer(stream).Render(cursor);
        input = Console.ReadKey(true);

        if (input.Modifiers == ConsoleModifiers.Control) {
            if (input.Key == ConsoleKey.H) {
                useSyntaxHighlighting = !useSyntaxHighlighting;
                Console.Write($"\n #: {nameof(useSyntaxHighlighting)} = {useSyntaxHighlighting}\n <: ");
                cursor = Console.GetCursorPosition();
            }
            if (input.Key == ConsoleKey.L) {
                LoggerService.Default = LoggerService.Default < LogLevel.All ? LogLevel.All : LogLevel.Info;
                Console.Write($"\n #: LogLevel = {LoggerService.Default}\n <: ");
                cursor = Console.GetCursorPosition();
            }
            continue;
        }

        if (input.Key == ConsoleKey.LeftArrow) {
            if (stream.Position > 0) {
                stream.Position--;
                Console.CursorLeft--;
            }
            continue;
        }

        if (input.Key == ConsoleKey.RightArrow) {
            if (stream.Position < stream.Length) {
                stream.Position++;
                Console.CursorLeft++;
            }
            continue;
        }

        if (input.Key == ConsoleKey.UpArrow) {
            historyCursor = Math.Min(History.Count - 1, historyCursor + 1);
            byte[] bytes = History[historyCursor];
            continue;
        }

        if (input.Key == ConsoleKey.DownArrow) {
            historyCursor = Math.Max(0, historyCursor - 1);
            byte[] bytes = History[historyCursor];
            continue;
        }

        if (input.Key == ConsoleKey.Backspace && stream.Position > 0) {
            Console.CursorLeft -= 1;
            Console.Write(' ');
            if (!useSyntaxHighlighting)
                Console.CursorLeft -= 1;
            //stream.Position--;
            //stream.SetLength(stream.Position);
            stream.Remove(stream.Position - 1, 1);
        } else if (input.Key == ConsoleKey.Enter && input.Modifiers == ConsoleModifiers.Shift) {
            if (!useSyntaxHighlighting)
                Console.Write("\n  : ");
            stream.Insert(Encoding.Default.GetBytes(Environment.NewLine));
        } else if (Ignored.IndexOf(input.KeyChar) < 0) {
            if (!useSyntaxHighlighting)
                Console.Write(input.KeyChar);
            stream.Insert(Encoding.Default.GetBytes([input.KeyChar], 0, 1));
        }
    } while (input.Key != ConsoleKey.Enter || input.Modifiers == ConsoleModifiers.Shift);
    try {
        History.Insert(0, stream.GetBuffer());
        Console.WriteLine();
        runner.Run(stream);
        stream.Dispose();
    }
    catch (QampException e) {
        Console.ForegroundColor = ConsoleColor.Yellow;
        Console.WriteLine($" !> {e.Message}");
        if (e.StackTrace != null) {
            Console.Write($" !  ");
            Console.WriteLine(string.Join("\n !  ", e.StackTrace.Split('\n')));
        }
    }
    catch (Exception e) {
        Console.ForegroundColor = ConsoleColor.DarkRed;
        Console.WriteLine($" !? {e.Message}");
        if (e.StackTrace != null) {
            Console.Write($" !  ");
            Console.WriteLine(string.Join("\n !  ", e.StackTrace.Split('\n')));
        }
    }
} while(code != ConsoleCode.Exit);

public class Command
{

    public class Parameters
    {

    }

    public class Definition
    {
        public string Name { get; init; }
        public string Alias { get; init; }

        public class Parameter
        {
            public string Name { get; init; }
            public string Alias { get; init; }
        }
    }
}

public class ArgumentAttribute(string name, string alias, string description)
{
    public string Name { get; } = name;
    public string Alias { get; } = alias;
    public string Description { get; } = description;
}