using System;
using System.Collections.Generic;
using System.Linq;

namespace NBF
{
    public struct CommandArgsStruct
    {
        public override bool Equals(object obj)
        {
            return obj is CommandArgsStruct other && Equals(other);
        }

        public override int GetHashCode()
        {
            return (Value != null ? Value.GetHashCode() : 0);
        }

        private string Value { get; set; }

        public CommandArgsStruct(string val = "")
        {
            Value = val;
        }

        public bool Equals(CommandArgsStruct other)
        {
            return Value == other.Value;
        }

        public static bool operator ==(CommandArgsStruct a, CommandArgsStruct b) => a.Value == b.Value;
        public static bool operator !=(CommandArgsStruct a, CommandArgsStruct b) => a.Value != b.Value;

        public override string ToString() => Value;

        public int ToInt()
        {
            return int.TryParse(Value, out var i) ? i : 0;
        }

        public float ToFloat()
        {
            return float.TryParse(Value, out var i) ? i : 0;
        }

        public T[] ToArr<T>(string split = ",") where T : IConvertible
        {
            var arr = Value.Split(split);
            return arr.Select(a => (T)Convert.ChangeType(a, typeof(T))).ToArray();
        }
    }

    public class CommandArgs
    {
        public string Command { get; private set; }

        private readonly List<CommandArgsStruct> _args = new List<CommandArgsStruct>();


        public CommandArgs(string str)
        {
            _args.Clear();
            var args = str.Split(' ');
            for (var i = 0; i < args.Length; i++)
            {
                if (i == 0)
                {
                    Command = args[i];
                }
                else
                {
                    _args.Add(new CommandArgsStruct(args[i]));
                }
            }
        }

        public CommandArgsStruct this[int index] => Get(index);

        public CommandArgsStruct Get(int index)
        {
            if (index < _args.Count && index >= 0)
            {
                return _args[index];
            }

            return new CommandArgsStruct();
        }
    }
}