using System;
using System.Linq;

namespace SharpChat {
    public class ChatCommandContext {
        public string Name { get; }
        public string[] Args { get; }
        public ChatContext Chat { get; }
        public ChatUser User { get; }
        public ChatConnection Connection { get; }
        public ChatChannel Channel { get; }

        public ChatCommandContext(
            string text,
            ChatContext chat,
            ChatUser user,
            ChatConnection connection,
            ChatChannel channel
        ) {
            if(text == null)
                throw new ArgumentNullException(nameof(text));

            Chat = chat ?? throw new ArgumentNullException(nameof(chat));
            User = user ?? throw new ArgumentNullException(nameof(user));
            Connection = connection ?? throw new ArgumentNullException(nameof(connection));
            Channel = channel ?? throw new ArgumentNullException(nameof(channel));

            string[] parts = text[1..].Split(' ');
            Name = parts.First().Replace(".", string.Empty);
            Args = parts.Skip(1).ToArray();
        }

        public ChatCommandContext(
            string name,
            string[] args,
            ChatContext chat,
            ChatUser user,
            ChatConnection connection,
            ChatChannel channel
        ) {
            Name = name ?? throw new ArgumentNullException(nameof(name));
            Args = args ?? throw new ArgumentNullException(nameof(args));
            Chat = chat ?? throw new ArgumentNullException(nameof(chat));
            User = user ?? throw new ArgumentNullException(nameof(user));
            Connection = connection ?? throw new ArgumentNullException(nameof(connection));
            Channel = channel ?? throw new ArgumentNullException(nameof(channel));
        }

        public bool NameEquals(string name) {
            return Name.Equals(name, StringComparison.InvariantCultureIgnoreCase);
        }
    }
}