using System;
using System.Collections.Generic;
using UnityEngine;
using DungeonMapGenerator;
using Unity.VisualScripting;
using Object = UnityEngine.Object;


namespace DungeonGenerator
{
    public class DungeonMapLoader
    {
        private const string ROOMS_PARENT = "RoomsParent";
        private const string MONSTER_ROOM = "Rooms\\MonsterRoom";
        private const string BOSS_ROOM = "Rooms\\BossRoom";
        private const string NORMAL_ROOM = "Rooms\\Room";

        
        private Dictionary<int, GameObject> _roomIdToGameObject = new Dictionary<int, GameObject>();

        public void AddDungeonRoomsToGameObject(GameObject gameObject, string pathToDungeonFile)
        {
            DungeonMap map = DungeonMapSerializer.DeserializeFromFile(pathToDungeonFile);
            GameObject bossRoomPrefab = Resources.Load<GameObject>(BOSS_ROOM);
            GameObject monsterRoomPrefab = Resources.Load<GameObject>(MONSTER_ROOM);
            GameObject normalRoomPrefab = Resources.Load<GameObject>(NORMAL_ROOM);
            
            GameObject bossRoomGO = Object.Instantiate(bossRoomPrefab, 
                ConvertToUnityPosition(map.GetBossRoom().GetCenterOfRoom(), map.Width, map.Height),
                Quaternion.identity,
                gameObject.transform);
            _roomIdToGameObject[map.GetBossRoom().Id] = bossRoomGO;
            
            foreach (var monsterRoom in map.GetMonsterRooms())
            {
                GameObject monsterRoomGO = Object.Instantiate(
                    monsterRoomPrefab,
                    ConvertToUnityPosition(monsterRoom.GetCenterOfRoom(), map.Width, map.Height),
                    Quaternion.identity,
                    gameObject.transform);
                _roomIdToGameObject[monsterRoom.Id] = monsterRoomGO;
            }

            foreach (var normalRoom in map.GetNormalRooms())
            {
                GameObject normalRoomGO = Object.Instantiate(
                    normalRoomPrefab,
                    ConvertToUnityPosition(normalRoom.GetCenterOfRoom(), map.Width, map.Height),
                    Quaternion.identity,
                    gameObject.transform);
                _roomIdToGameObject[normalRoom.Id] = normalRoomGO;
            }

            foreach (var entranceRoom in map.GetEntranceRooms())
            {
                GameObject entranceRoomGO = Object.Instantiate(
                    normalRoomPrefab,
                    ConvertToUnityPosition(entranceRoom.GetCenterOfRoom(), map.Width, map.Height),
                    Quaternion.identity,
                    gameObject.transform);
                entranceRoomGO.GetComponent<Room>().IsEntrance = true;
                _roomIdToGameObject[entranceRoom.Id] = entranceRoomGO;
            }

            foreach (var mapRoom in map.GetAllRooms())
            {
                HashSet<int> adjacentRoomsIds = mapRoom.GetAdjacentRoomIds();
                Room roomComponent = _roomIdToGameObject[mapRoom.Id].GetComponent<Room>();
                foreach (var id in adjacentRoomsIds)
                {
                    roomComponent.AdjacentRooms.Add(_roomIdToGameObject[id]);
                }
            }
        }

        private Vector3 ConvertToUnityPosition(Point dungeonPosition, int mapWidth, int mapHeight)
        {
            float newX = (dungeonPosition.X - (mapWidth / 2f)) / 2;
            float newY = -(dungeonPosition.Y - (mapHeight / 2f)) / 2;

            return new Vector3(newX, newY, 0f);
        }
    }
}