using System.Collections.Generic;
using System.ComponentModel.Design.Serialization;
using System.Linq;
using UnityEngine;
namespace _Project.Scripts.LevelGenerating
{
    public class WallsGenerator :  MonoBehaviour
    {
        [SerializeField] private int roomCountMin;
        [SerializeField] private int roomCountMax;
        [SerializeField] private int floorsCount;
        [SerializeField] private int lengthWallMin;
        [SerializeField] private int lengthWallMax;
        [SerializeField] private int lengthStartRoom;
        [SerializeField] private int lengthFloor;
        [SerializeField] private int corridorLength;
        [SerializeField] private int corridorWigth;
        [SerializeField] private GameObject GameObjectA;
        [SerializeField] private GameObject GameObjectB;
        
        
        

        private int RoomCount;
        private LevelManager levelManager;

        void Start()
        {
            levelManager = LevelManager.Instance;
            CreateStartRoom();
        }

        void GenerateRooms()
        {
            RoomCount = Random.Range(roomCountMin, roomCountMax);
            LevelManager.Rooms.Add(new Room(Vector2.zero,lengthStartRoom, lengthStartRoom,RoomType.Start));
            
        }
        Room CreateCorridor(Vector2 posRoom, int Length, int Wigth, ExitsInRoomType exitType)
        {
            Vector2 corridorPos = Vector2.zero;
            int cLength = 0;
            int cWidth = 0;
            EntranceToRoomType entranceToRoomType = EntranceToRoomType.Null;
            List<ExitsInRoomType> exitsInRoomType = new List<ExitsInRoomType>();
            switch (exitType)
            {
                // Выход направо (+X)
                case ExitsInRoomType.XAxisP:
                    // Начинается у правой стены комнаты (posRoom.x + Length)
                    // Центрируем коридор по высоте/оси Z: смещаем на половину разницы ширин
                    exitsInRoomType.Add (ExitsInRoomType.XAxisP);
                    entranceToRoomType = EntranceToRoomType.XAxisN;
                    corridorPos = new Vector2(
                        posRoom.x + Length, 
                        posRoom.y + (Wigth - corridorWigth) / 2f
                    );
                    cLength = corridorLength;
                    cWidth = corridorWigth;
                    
                    break;

                // Выход налево (-X)
                case ExitsInRoomType.XAxisN:
                    // Начинается слева от комнаты, отступая на длину коридора
                    exitsInRoomType .Add (ExitsInRoomType.XAxisN);
                    entranceToRoomType = EntranceToRoomType.XAxisP;
                    corridorPos = new Vector2(
                        posRoom.x - corridorLength, 
                        posRoom.y + (Wigth - corridorWigth) / 2f
                    );
                    cLength = corridorLength;
                    cWidth = corridorWigth;
                    break;

                // Выход вперед/вверх (+Z / в Vector2 это Y)
                case ExitsInRoomType.ZAxisP:
                    entranceToRoomType = EntranceToRoomType.ZAxisN;
                    
                    exitsInRoomType.Add (ExitsInRoomType.ZAxisP);
                    // Начинается у верхней стены комнаты (posRoom.y + Wigth)
                    // Центрируем коридор по горизонтали/оси X:
                    corridorPos = new Vector2(
                        posRoom.x + (Length - corridorWigth) / 2f, 
                        posRoom.y + Wigth
                    );
                    // По оси X коридор узкий, по оси Z — длинный:
                    cLength = corridorWigth;
                    cWidth = corridorLength;
                    break;

                // Выход назад/вниз (-Z / в Vector2 это Y)
                case ExitsInRoomType.ZAxisN:
                    entranceToRoomType = EntranceToRoomType.ZAxisP;

                    exitsInRoomType.Add (ExitsInRoomType.ZAxisN);
                    // Начинается ниже комнаты, отступая на длину коридора
                    corridorPos = new Vector2(
                        posRoom.x + (Length - corridorWigth) / 2f, 
                        posRoom.y - corridorLength
                    );
                    cLength = corridorWigth;
                    cWidth = corridorLength;
                    break;
            }

            // Создаем коридор как отдельную комнату
            
            Room corridor = new Room(corridorPos,
                cLength, cWidth, RoomType.Corridor,false,
                EntranceToRoomType.Null,exitsInRoomType); 
            
            LevelManager.Rooms.Add(corridor);

            // Визуализация коридора (расставляем маркеры по углам коридора для наглядности)
            Instantiate(GameObjectB, new Vector3(corridorPos.x, 0, corridorPos.y), Quaternion.identity);
            Instantiate(GameObjectB, new Vector3(corridorPos.x + cLength, 0, corridorPos.y), Quaternion.identity);
            Instantiate(GameObjectB, new Vector3(corridorPos.x + cLength, 0, corridorPos.y + cWidth), Quaternion.identity);
            Instantiate(GameObjectB, new Vector3(corridorPos.x, 0, corridorPos.y + cWidth), Quaternion.identity);
            return corridor;
        }

        void TryPlaceRoom(Room corridor)
        {
            
            // Room lastCorridor = LevelManager.Instance.GetLastRoom();
            if (corridor != null && corridor.exits.Count == 1)
            {
                switch (corridor.exits.Last())
                {
                    case ExitsInRoomType.XAxisP:
                    {
                        if ((lengthFloor - (corridor.Position.x + corridorLength + lengthWallMin) > 0)
                            && (lengthFloor - (corridor.Position.y + corridorWigth + lengthWallMin) > 0))
                        {
                            Room newRoom = GenerateRandomRoom();
                            if()
                        }
                        
                        break;
                    }

                }
            }

        }
        Room GenerateRandomRoom()
        {
            int a = Random.Range(lengthWallMin, lengthWallMax);
            int b = Random.Range(lengthWallMin, lengthWallMax);
            Room room = new Room();
            room.Length = a;
            room.Wigth = b;
            return room;
        }

        void CreateStartRoom()
        {
            float randValue = Random.value;
            int xR, zR;
            Vector2Int posStartRoom = new Vector2Int();
            
            Room room = new Room( lengthStartRoom, lengthStartRoom, RoomType.Start);
            if (randValue < 0.25f) //1 квадрант
            {
                xR = Random.Range(0,lengthFloor/2-lengthStartRoom);
                if (xR + lengthStartRoom <= lengthFloor / 4)
                {
                    room.exits.Add(ExitsInRoomType.XAxisP);
                    zR = Random.Range(0, lengthFloor/2-lengthStartRoom);
                }
                else
                {
                    room.exits.Add(ExitsInRoomType.ZAxisP);
                    zR = Random.Range(0, lengthFloor/4-lengthStartRoom);
                }
            }
            else if (randValue < 0.5f) // 2 квадрант
            {
                xR = Random.Range(lengthFloor/2, lengthFloor-lengthStartRoom);//от половины до конца
                if (xR + lengthStartRoom <= lengthFloor * 3/4)
                {
                    room.exits.Add(ExitsInRoomType.ZAxisP);
                    zR = Random.Range(0, lengthFloor/4-lengthStartRoom);
                }
                else
                {
                    room.exits.Add(ExitsInRoomType.XAxisN);
                    zR = Random.Range(0, lengthFloor/2-lengthStartRoom);
                }
            }
            else if (randValue < 0.75f)
            {
                xR = Random.Range(lengthFloor / 2, lengthFloor - lengthStartRoom);
                if (xR + lengthStartRoom <= lengthFloor * 3 / 4)
                {
                    room.exits.Add(ExitsInRoomType.ZAxisN);
                    zR = Random.Range(lengthFloor * 3 / 4, lengthFloor - lengthStartRoom);
                }
                else 
                {
                    room.exits.Add(ExitsInRoomType.XAxisN);
                    zR = Random.Range(lengthFloor / 2, lengthFloor - lengthStartRoom);
                }
            }
            else
            {
                xR = Random.Range(0, lengthFloor / 2 - lengthStartRoom);
                if (xR + lengthStartRoom <= lengthFloor / 4)
                {
                    room.exits.Add(ExitsInRoomType.XAxisP);
                    zR = Random.Range(lengthFloor / 2, lengthFloor - lengthStartRoom);
                }
                else 
                {
                    room.exits.Add(ExitsInRoomType.ZAxisN);
                    zR = Random.Range(lengthFloor * 3 / 4, lengthFloor - lengthStartRoom);
                }
            }

            room.entrance = EntranceToRoomType.Null;
            LevelManager.Rooms.Add(room);
            Instantiate(GameObjectA, new Vector3(0,-1,0), Quaternion.identity);
            
            Instantiate(GameObjectB, new Vector3(xR,0,zR), Quaternion.identity);
            Instantiate(GameObjectB, new Vector3(xR+lengthStartRoom,0,zR), Quaternion.identity);
            Instantiate(GameObjectB, new Vector3(xR+lengthStartRoom,0,zR+lengthStartRoom), Quaternion.identity);
            Instantiate(GameObjectB, new Vector3(xR,0,zR+lengthStartRoom), Quaternion.identity);
            
            CreateCorridor(new Vector2Int(xR, zR),lengthStartRoom,lengthStartRoom,room.exits.First());
            Room firstCorridor = CreateCorridor(new Vector2(xR, zR), lengthStartRoom, lengthStartRoom, room.exits.First());
            if (firstCorridor != null)
            {
                TryPlaceRoom(firstCorridor);
            }
        }
        
    }
}