using System;
using System.Collections.Generic;
using UnityEngine;
using YachtDice.Dice;

namespace YachtDice.Game
{

public sealed class DiceManager : MonoBehaviour
{
    [SerializeField] private List<DiceRoller> diceRollers = new();

    public event Action OnAllDiceSettled;
    public event Action<int, int> OnDieSettled;

    public int DiceCount => diceRollers.Count;

    private bool[] locked;
    private int[] currentValues;
    private int pendingCount;

    private void Awake()
    {
        int count = diceRollers.Count;
        locked = new bool[count];
        currentValues = new int[count];
    }

    public bool IsLocked(int index) => locked[index];

    public void ToggleLock(int index)
    {
        locked[index] = !locked[index];
    }

    public void SetLocked(int index, bool isLocked)
    {
        locked[index] = isLocked;
    }

    public void UnlockAll()
    {
        for (int i = 0; i < locked.Length; i++) locked[i] = false;
    }

    public void RollUnlocked()
    {
        for (int i = 0; i < diceRollers.Count; i++)
            if (diceRollers[i].IsRolling) return;

        pendingCount = 0;

        for (int i = 0; i < diceRollers.Count; i++)
        {
            if (locked[i]) continue;

            pendingCount++;
            int capturedIndex = i;

            void Handler(int value)
            {
                diceRollers[capturedIndex].OnRollFinished -= Handler;
                currentValues[capturedIndex] = value;
                OnDieSettled?.Invoke(capturedIndex, value);

                pendingCount--;
                if (pendingCount <= 0)
                    OnAllDiceSettled?.Invoke();
            }

            diceRollers[i].OnRollFinished += Handler;
            diceRollers[i].Roll();
        }

        if (pendingCount == 0)
            OnAllDiceSettled?.Invoke();
    }

    public int[] GetCurrentValues()
    {
        int[] copy = new int[currentValues.Length];
        Array.Copy(currentValues, copy, currentValues.Length);
        return copy;
    }

    public int GetValue(int index) => currentValues[index];

    public bool IsAnyRolling
    {
        get
        {
            for (int i = 0; i < diceRollers.Count; i++)
                if (diceRollers[i].IsRolling) return true;
            return false;
        }
    }

    public void ReadAllValues()
    {
        for (int i = 0; i < diceRollers.Count; i++)
        {
            var diceComponent = diceRollers[i].GetComponent<Dice>();
            if (diceComponent != null && diceComponent.TryGetTopValue(out int val))
                currentValues[i] = val;
        }
    }
}
}