using System;
using System.Collections;
using System.Collections.Generic;
using TMPro;
using UnityEngine;
using UnityEngine.UI;

public class CharacterSettingPanel : MonoBehaviour
{
    [SerializeField] TextMeshProUGUI nameLabel;
    [SerializeField] TextMeshProUGUI PrizeTypeLabel;
    [SerializeField] TextMeshProUGUI AmountLabel;

    [SerializeField] Image CharacterIcon;
    [SerializeField] Image ConfirmIcon;
    [SerializeField] RectTransform pointer;
    [SerializeField] List<Vector2> pointerPositions = new List<Vector2>() { };

    [SerializeField] List<Graphic> fadeGraphics;
    [SerializeField] float fadeTime = 0.5f;
    private Coroutine fadeInCoroutine;
    private Coroutine fadeOutCoroutine;


    Character[] characters;
    int botsAmount;
    List<Prize> prizes;

    int direction1; //джойстик 1 выбор настройки
    int direction2; //джойстик 2 выбор опции внутир настройки
    int direction3; //p1 | p2 переключение персонажа
    bool holdingSave; //держим p1 + p2
    float timeToConfirm = 3;
    float timeRest;

    int characterIndex = 0;
    int prizeTypeIndex;
    int prizeAmount;

    int setting = 0; // что сейчас настраивается. 0 - тип приза, 1 - количество призов
    Array PrizeTypes = Enum.GetValues(typeof(PrizeType));


    private void OnEnable() => Initialize();

    private void Update()
    {
        collectInputs();

        SwitchSetting(direction1);
        SwitchOption(direction2);
        SwitchCharacter(direction3);
        SaveProcess(holdingSave);
    }


    void Initialize()
    {
        prizes = PrizeSerializer.GetPrizes();
        characters = CharacterController.I.characters;
        botsAmount = GameManager.instance.botsAmount;
        timeRest = timeToConfirm;

        characterIndex = 0;
        SetCharacter(characterIndex);
    }

    void SetCharacter(int index)
    {
        Character characterToSet = characters[index];
        Prize prizeToSet = prizes[index];


        nameLabel.text = characterToSet.Name;
        PrizeTypeLabel.text = PrizeTypeToString(prizeToSet.PrizeType);

        prizeAmount = ValidatePrizeAmount(prizeToSet.Amount, prizeToSet.PrizeType);
        prizeToSet.Amount = prizeAmount;

        AmountLabel.text = prizeToSet.Amount.ToString();

        CharacterIcon.sprite = characterToSet.Icon;

        prizeTypeIndex = Array.IndexOf(PrizeTypes, prizeToSet.PrizeType);

        setting = 0;
        pointer.anchoredPosition = pointerPositions[setting];
    }

    void collectInputs()
    {
        direction1 = 0;
        direction1 += In.GetButtonDown(ButtonPinMapping.left1) ? -1 : 0;
        direction1 += In.GetButtonDown(ButtonPinMapping.right1) ? +1 : 0;

        direction2 = 0;
        direction2 += In.GetButtonDown(ButtonPinMapping.left2) ? -1 : 0;
        direction2 += In.GetButtonDown(ButtonPinMapping.right2) ? +1 : 0;

        direction3 = 0;
        direction3 += In.GetButtonDown(ButtonPinMapping.startOnePlayer) ? -1 : 0;
        direction3 += In.GetButtonDown(ButtonPinMapping.startTwoPlayers) ? +1 : 0;

        //holdingSave = In.GetButton(ButtonPinMapping.startOnePlayer) && In.GetButton(ButtonPinMapping.startTwoPlayers);
        //holdingSave = In.GetButton(ButtonPinMapping.down2);
        holdingSave = In.GetButton(ButtonPinMapping.startOnePlayer) && In.GetButton(ButtonPinMapping.startTwoPlayers);
    }

    //перекл между настройками (тип -> колво)
    void SwitchSetting(int direction)
    {
        if (direction == 0) return;

        if (direction == -1)
        {
            setting = 0;
        }
        if (direction == 1)
        {
            setting = 1;
        }

        pointer.anchoredPosition = pointerPositions[setting];
    }

    //перекл между опциями внутри настройки
    void SwitchOption(int direction)//тут будем записываться
    {
        if (direction == 0) return;
        
        if (setting == 0)//меняем тип
        {
            prizeTypeIndex = (prizeTypeIndex + direction + PrizeTypes.Length) % PrizeTypes.Length;
            PrizeType prizeTypeToSet = (PrizeType)PrizeTypes.GetValue(prizeTypeIndex);

            //validation: отсечь спец приз всем кроме последнего
            if (characterIndex != botsAmount-1 && prizeTypeToSet == PrizeType.Special)
            {
                prizeTypeIndex = (prizeTypeIndex + direction + PrizeTypes.Length) % PrizeTypes.Length;
                prizeTypeToSet = (PrizeType)PrizeTypes.GetValue(prizeTypeIndex);
            }


            PrizeTypeLabel.text = PrizeTypeToString(prizeTypeToSet);
            prizes[characterIndex].PrizeType = prizeTypeToSet;

            prizeAmount = ValidatePrizeAmount(prizeAmount, prizes[characterIndex].PrizeType);
            AmountLabel.text = prizeAmount.ToString();
            prizes[characterIndex].Amount = prizeAmount;
        }

        if (setting == 1)//меняем количество
        {
            prizeAmount += direction;
            prizeAmount = ValidatePrizeAmount(prizeAmount, prizes[characterIndex].PrizeType);
            prizes[characterIndex].Amount = prizeAmount;
            AmountLabel.text = prizeAmount.ToString();
        }
    }

    int ValidatePrizeAmount(int amount, PrizeType prizeType)
    {
        if (prizeType == PrizeType.None)
        {
            return 0;
        }
        if (prizeType == PrizeType.Hopper)
        {
            return Mathf.Clamp(amount, 1, 5);
        }
        if (prizeType == PrizeType.Special)
        {
            return 1;
        }
        if (prizeType == PrizeType.Ticket)
        {
            return Mathf.Clamp(amount, 1, 100);
        }
        if (prizeType == PrizeType.Marbles)
        {
            return Mathf.Clamp(amount, 1, 5);
        }
        return 0;
    }

    void SwitchCharacter(int direction)
    {
        if (direction == 0) { return; }

        characterIndex = (characterIndex + direction + botsAmount) % botsAmount;
        SetCharacter(characterIndex);
    }

    void SaveProcess(bool pressed)
    {
        HandleFadeAnimation(pressed);
        HandleConfirmationTimer(pressed);

        if (ShouldExecuteSave())
            SaveAndClose();
    }

    private bool ShouldExecuteSave() => 
        timeRest <= 0;
    private void HandleConfirmationTimer(bool pressed)
    {
        timeRest += Time.deltaTime;
        if (pressed) timeRest -= Time.deltaTime * 2;
        timeRest = Mathf.Clamp(timeRest, 0, timeToConfirm);

        ConfirmIcon.fillAmount = (timeToConfirm - timeRest) / timeToConfirm;
    }

    private void HandleFadeAnimation(bool pressed)
    {
        if (pressed)
        {
            if (fadeInCoroutine == null)
            {
                if (fadeOutCoroutine != null)
                {
                    StopCoroutine(fadeOutCoroutine);
                    fadeOutCoroutine = null;
                }
                fadeInCoroutine = StartCoroutine(Fade(1));
            }
        }
        else
        {
            if (Mathf.Approximately(timeRest, timeToConfirm) && fadeOutCoroutine == null)
            {
                if (fadeInCoroutine != null)
                {
                    StopCoroutine(fadeInCoroutine);
                    fadeInCoroutine = null;
                }
                fadeOutCoroutine = StartCoroutine(Fade(-1));
            }
        }
    }

    private void SaveAndClose()
    {
        Debug.Log("Сохранение конфига персонажей");
        PrizeSerializer.SetPrizes(prizes);
        CharacterController.I.RefreshPrizes();
        timeRest = timeToConfirm;
        GameManager.instance.stateMachine.ChangeState(new SettingsState());
    }

    string PrizeTypeToString(PrizeType prizeType)
    {
        return prizeType switch
        {
            PrizeType.None => "Без приза",
            PrizeType.Hopper => "Хоппер 1",
            PrizeType.Hopper2 => "Хоппер 2",
            PrizeType.Ticket => "Билет",
            PrizeType.Special => "Суперприз",
            PrizeType.Marbles => "Марблс",
            _ => "Без приза"
        };
    }


    IEnumerator Fade(int direction)
    {
        Vector4 color = fadeGraphics[0].color;

        Vector4 targetColor = direction switch
        {
            -1 => new Vector4(1, 1, 1, 0),
            1 => new Vector4(1, 1, 1, 1),
            _ => new Vector4(1, 1, 1, 0)
        };


        while (color != targetColor)
        {
            color = Vector4.MoveTowards(color, targetColor, Time.deltaTime / fadeTime);
            foreach (Graphic graphic in fadeGraphics)
            {
                graphic.color = color;
            }
            yield return null;
        }
    }

}