using QSB.Messaging;
using UnityEngine;
using System.Linq;
using UnityEngine.SceneManagement;

namespace QSB.TransformSync
{
    public class SectorSync : MonoBehaviour
    {
        public static SectorSync Instance { get; private set; }

        private Sector[] _allSectors;
        private MessageHandler<SectorMessage> _sectorHandler;

        private readonly Sector.Name[] _sectorWhitelist = {
            Sector.Name.BrambleDimension,
            Sector.Name.BrittleHollow,
            Sector.Name.Comet,
            Sector.Name.DarkBramble,
            Sector.Name.EyeOfTheUniverse,
            Sector.Name.GiantsDeep,
            Sector.Name.HourglassTwin_A,
            Sector.Name.HourglassTwin_B,
            Sector.Name.OrbitalProbeCannon,
            Sector.Name.QuantumMoon,
            Sector.Name.SunStation,
            Sector.Name.TimberHearth,
            Sector.Name.TimberMoon,
            Sector.Name.VolcanicMoon,
            Sector.Name.WhiteHole
        };

        private void Awake()
        {
            SceneManager.sceneLoaded += OnSceneLoaded;
        }

        private void Start()
        {
            Instance = this;

            _sectorHandler = new MessageHandler<SectorMessage>();
            _sectorHandler.OnClientReceiveMessage += OnClientReceiveMessage;
            _sectorHandler.OnServerReceiveMessage += OnServerReceiveMessage;

            QSB.Helper.HarmonyHelper.AddPrefix<SectorDetector>("AddSector", typeof(Patches), "PreAddSector");
        }

        private void OnSceneLoaded(Scene scene, LoadSceneMode mode)
        {
            _allSectors = null;
        }

        public void SetSector(uint id, Sector.Name sectorName)
        {
            DebugLog.ToScreen("Gonna set sector");

            PlayerRegistry.UpdateSector(id, FindSectorTransform(sectorName));

            var msg = new SectorMessage
            {
                SectorId = (int)sectorName,
                SenderId = id
            };
            _sectorHandler.SendToServer(msg);
        }

        private Transform FindSectorTransform(Sector.Name sectorName)
        {
            if (_allSectors == null)
            {
                _allSectors = FindObjectsOfType<Sector>();
            }
            return _allSectors
                .Where(sector => sectorName == sector.GetName())
                .Select(sector => sector.transform)
                .FirstOrDefault();
        }

        private void OnClientReceiveMessage(SectorMessage message)
        {
            DebugLog.ToScreen("OnClientReceiveMessage SectorSync");

            var sectorName = (Sector.Name)message.SectorId;
            var sectorTransform = FindSectorTransform(sectorName);

            if (sectorTransform == null)
            {
                DebugLog.ToScreen("Sector", sectorName, "not found");
                return;
            }

            DebugLog.ToScreen("Found sector", sectorName, ", setting for", message.SenderId);
            PlayerRegistry.UpdateSector(message.SenderId, sectorTransform);
        }

        private void OnServerReceiveMessage(SectorMessage message)
        {
            DebugLog.ToScreen("OnServerReceiveMessage SectorSync");
            _sectorHandler.SendToAll(message);
        }

        private static class Patches
        {
            private static void PreAddSector(Sector sector, DynamicOccupant ____occupantType)
            {
                if (!Instance._sectorWhitelist.Contains(sector.GetName()))
                {
                    return;
                }

                if (____occupantType == DynamicOccupant.Player && PlayerTransformSync.LocalInstance != null)
                {
                    PlayerTransformSync.LocalInstance?.EnterSector(sector);
                    PlayerCameraSync.LocalInstance?.EnterSector(sector);
                    return;
                }

                if (____occupantType == DynamicOccupant.Ship && ShipTransformSync.LocalInstance != null)
                {
                    ShipTransformSync.LocalInstance.EnterSector(sector);
                }
            }
        }

    }
}