using System;
using System.Linq;
using Content.Client.Interfaces;
using Content.Shared.Preferences;
using Robust.Shared.Interfaces.Network;
using Robust.Shared.IoC;

namespace Content.Client
{
    /// <summary>
    ///     Receives <see cref="PlayerPreferences" /> and <see cref="GameSettings" /> from the server during the initial
    ///     connection.
    ///     Stores preferences on the server through <see cref="SelectCharacter" /> and <see cref="UpdateCharacter" />.
    /// </summary>
    public class ClientPreferencesManager : SharedPreferencesManager, IClientPreferencesManager
    {
        [Dependency] private readonly IClientNetManager _netManager = default!;

        public event Action OnServerDataLoaded;
        public GameSettings Settings { get; private set; }
        public PlayerPreferences Preferences { get; private set; }

        public void Initialize()
        {
            _netManager.RegisterNetMessage<MsgPreferencesAndSettings>(nameof(MsgPreferencesAndSettings),
                HandlePreferencesAndSettings);
            _netManager.RegisterNetMessage<MsgUpdateCharacter>(nameof(MsgUpdateCharacter));
            _netManager.RegisterNetMessage<MsgSelectCharacter>(nameof(MsgSelectCharacter));
        }

        public void SelectCharacter(ICharacterProfile profile)
        {
            SelectCharacter(Preferences.IndexOfCharacter(profile));
        }

        public void SelectCharacter(int slot)
        {
            Preferences = new PlayerPreferences(Preferences.Characters, slot);
            var msg = _netManager.CreateNetMessage<MsgSelectCharacter>();
            msg.SelectedCharacterIndex = slot;
            _netManager.ClientSendMessage(msg);
        }

        public void UpdateCharacter(ICharacterProfile profile, int slot)
        {
            var characters = Preferences.Characters.ToArray();
            characters[slot] = profile;
            Preferences = new PlayerPreferences(characters, Preferences.SelectedCharacterIndex);
            var msg = _netManager.CreateNetMessage<MsgUpdateCharacter>();
            msg.Profile = profile;
            msg.Slot = slot;
            _netManager.ClientSendMessage(msg);
        }

        public void CreateCharacter(ICharacterProfile profile)
        {
            UpdateCharacter(profile, Preferences.FirstEmptySlot);
        }

        public void DeleteCharacter(ICharacterProfile profile)
        {
            DeleteCharacter(Preferences.IndexOfCharacter(profile));
        }

        public void DeleteCharacter(int slot)
        {
            UpdateCharacter(null, slot);
        }

        private void HandlePreferencesAndSettings(MsgPreferencesAndSettings message)
        {
            Preferences = message.Preferences;
            Settings = message.Settings;

            OnServerDataLoaded?.Invoke();
        }
    }
}