using System;
using Dalamud.Game.Command;

namespace NominaOcculta {
    internal class Commands : IDisposable {
        private Plugin Plugin { get; }

        internal Commands(Plugin plugin) {
            this.Plugin = plugin;

            this.Plugin.CommandManager.AddHandler("/occulta", new CommandInfo(this.OnCommand) {
                HelpMessage = "Toggle the Nomina Occulta interface",
            });
        }

        public void Dispose() {
            this.Plugin.CommandManager.RemoveHandler("/occulta");
        }

        private void OnCommand(string command, string arguments) {
            arguments = arguments.Trim();

            if (arguments.Length == 0) {
                this.Plugin.Ui.Visible ^= true;
                return;
            }

            var first = arguments.Split(' ', 2);
            bool? enable;
            switch (first[0]) {
                case "enable":
                    enable = true;
                    break;
                case "disable":
                    enable = false;
                    break;
                case "toggle":
                    enable = null;
                    break;
                case "reset":
                    this.Plugin.NameRepository.Reset();
                    return;
                default:
                    this.Plugin.ChatGui.PrintError($"Invalid operation \"{first[0]}\", was expecting enable, disable, toggle, or reset.");
                    return;
            }
            string? rest = null;
            if (first.Length > 1) {
                rest = first[1];
            }

            void Set(ref bool setting) {
                if (enable == null) {
                    setting ^= true;
                } else {
                    setting = enable.Value;
                }
            }

            switch (rest) {
                case null:
                    Set(ref this.Plugin.Config.Enabled);
                    break;
                case "self":
                    Set(ref this.Plugin.Config.SelfFull);
                    Set(ref this.Plugin.Config.SelfFirst);
                    Set(ref this.Plugin.Config.SelfLast);
                    break;
                case "self full":
                    Set(ref this.Plugin.Config.SelfFull);
                    break;
                case "self first":
                    Set(ref this.Plugin.Config.SelfFirst);
                    break;
                case "self last":
                    Set(ref this.Plugin.Config.SelfLast);
                    break;
                case "party":
                    Set(ref this.Plugin.Config.Party);
                    break;
                case "others":
                    Set(ref this.Plugin.Config.Others);
                    break;
                case "exclude friends":
                    Set(ref this.Plugin.Config.ExcludeFriends);
                    break;
                default:
                    this.Plugin.ChatGui.PrintError($"Invalid option \"{rest}\".");
                    return;
            }

            this.Plugin.SaveConfig();
        }
    }
}