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

namespace IRCStates
{
    // ReSharper disable once InconsistentNaming
    public class ISupportPrefix
    {
        /// <summary>
        /// Split the prefix value and add them to our known <see cref="Modes"/> and <see cref="Prefixes"/>
        /// </summary>
        /// <param name="splitVal"></param>
        /// <exception cref="ArgumentNullException"></exception>
        public ISupportPrefix(string splitVal)
        {
            if (splitVal == null) throw new ArgumentNullException(nameof(splitVal));

            var split = splitVal[1..].Split(')', 2);
            Modes = new List<string>();
            Modes.AddRange(split[0].Select(c => c.ToString(CultureInfo.InvariantCulture)));
            Prefixes = new List<string>();
            Prefixes.AddRange(split[1].Select(c => c.ToString(CultureInfo.InvariantCulture)));
        }

        public List<string> Modes { get; }
        public List<string> Prefixes { get; }

        // ReSharper disable once UnusedMember.Global
        public string FromMode(char mode)
        {
            return FromMode(mode.ToString(CultureInfo.InvariantCulture));
        }

        public string FromMode(string mode)
        {
            return Modes.Contains(mode) ? Prefixes[Modes.IndexOf(mode)] : null;
        }

        public string FromPrefix(char prefix)
        {
            return FromPrefix(prefix.ToString(CultureInfo.InvariantCulture));
        }

        public string FromPrefix(string prefix)
        {
            return Prefixes.Contains(prefix) ? Modes[Prefixes.IndexOf(prefix)] : null;
        }
    }
}