using System;
using UnityEngine;
using Object = UnityEngine.Object;
using System.Collections.Generic;
using TMPro;

public enum GameState
{
    RollDice,
    PickRoomOne,
    PickRoomTwo,
    PickDiceOne,
    PickDiceTwo,
}
public class GameManager : MonoBehaviour
{
    [SerializeField] private GameState state;
    [SerializeField] private GameObject rooms;
    [SerializeField] private DiceRoller diceRoller;

    private DicePair _dicePairOne = new DicePair();
    private DicePair _dicePairTwo = new DicePair();
    
    // Start is called once before the first execution of Update after the MonoBehaviour is created
    void Start()
    {
        diceRoller.diceRolled += DiceRolled;
        foreach (Transform roomTransform in rooms.transform)
        {
            roomTransform.gameObject.GetComponent<Room>().ValidRoomClicked += ValidRoomClicked;
        }
        foreach (Transform diceTransform in diceRoller.dice.transform)
        {
            diceTransform.gameObject.GetComponent<Die>().DieClicked += DieClicked;
        }
        StartNewTurn();
    }

    private void StartNewTurn()
    {
        state = GameState.RollDice;
        diceRoller.Enable();
        diceRoller.ResetDice();
        _dicePairOne = new DicePair();
        _dicePairTwo = new DicePair();
    }

    void ValidRoomClicked(object sender, Room room) {
        if (state != GameState.PickRoomOne && state != GameState.PickRoomTwo)
        {
            return;
        }

        switch (state)
        {
            case GameState.PickRoomOne when room.number != _dicePairOne.Sum():
            case GameState.PickRoomTwo when room.number != _dicePairTwo.Sum():
                return;
        }

        room.SetRoomExplored();
        if (state == GameState.PickRoomOne)
        {
            state = GameState.PickDiceTwo;
        }
        else
        {
            StartNewTurn();
        }
        
    }

    void DieClicked(object sender, Die die)
    {
        if (state != GameState.PickDiceOne && state != GameState.PickDiceTwo)
        {
            return;
        }

        switch (state)
        {
            case GameState.PickDiceOne:
            {
                if (!_dicePairOne.IsDieInPair(die))
                {
                    _dicePairOne.SelectDie(die);
            
                    if (_dicePairOne.AreBothDiceSelected())
                    {
                        state = GameState.PickRoomOne;
                        HighLightValidRoomsWithNumber(_dicePairOne.Sum());
                    }
                }

                break;
            }
            case GameState.PickDiceTwo:
            {
                if (!_dicePairTwo.IsDieInPair(die))
                {
                    _dicePairTwo.SelectDie(die);
            
                    if (_dicePairTwo.AreBothDiceSelected())
                    {
                        state = GameState.PickRoomTwo;
                        HighLightValidRoomsWithNumber(_dicePairTwo.Sum());
                    }
                }

                break;
            }
        }
    }

    void HighLightValidRoomsWithNumber(int number)
    {
        foreach (Transform roomTransform in rooms.transform)
        {
            Room room = roomTransform.gameObject.GetComponent<Room>();
            if (room.number == number && room.IsValidRoomToExplore())
            {
                room.HighlightRoomAsOption();
            }
        }
    }

    private void DiceRolled(object sender, EventArgs e)
    {
        if (state == GameState.RollDice)
        {
            diceRoller.Disable();
            state = GameState.PickDiceOne;
        }
    }
}