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

public class SetPasswordPanel : MonoBehaviour
{
    [SerializeField] GameObject ModalWindow;
    [SerializeField] AnimationCurve fillCurve;

    int enteredSymbols = 0;
    int SymbolsCount = 6;

    float acceptTimer = 0;
    public Image AcceptImage;

    float clearTimer = 0;
    public Image ClearImage;

    public List<string> symbols = new List<string>();

    public List<RectTransform> slots;
    public GameObject L1;
    public GameObject L2;
    public GameObject R1;
    public GameObject R2;
    public GameObject D1;
    public GameObject D2;
    private List<GameObject> spawnedObjs = new();


    List<ButtonPinMapping> availableButtons = new List<ButtonPinMapping> 
    {
        ButtonPinMapping.left1,
        ButtonPinMapping.left2,
        ButtonPinMapping.right1,
        ButtonPinMapping.right2,
        ButtonPinMapping.down1,
        ButtonPinMapping.down2,
    };


    bool ready = false;
    private void OnEnable()
    {
        ModalWindow.SetActive(true);
    }

    void Update()
    {
        if (!ready)
        {
            ready = AllButtonsUp();
            return;
        }

        //когда готово

        //p1 применить
        AcceptProcess();
        //p2 очистить
        ClearProcess();

        //получить комбинацию по кнопке
        ButtonsProcess();
    }

    void AcceptProcess()
    {
        ProcessImageTimer(AcceptImage, acceptTimer, 2);
        if (enteredSymbols != SymbolsCount) return;

        if (In.GetButton(ButtonPinMapping.startOnePlayer)) acceptTimer += Time.deltaTime;
        else acceptTimer -= Time.deltaTime;
        acceptTimer = Mathf.Clamp(acceptTimer, 0.0f, 2.0f);

        if (acceptTimer == 2)
        {
            acceptTimer = 0.0f;
            Accept();
        }
    }
    private void Accept()
    {
        string pwd = "";
        foreach (var s in symbols)
        {
            pwd += s;
        }
        ExternalFilesGetter.SetPassword(pwd);
        Clear();
        GameManager.instance.stateMachine.ChangeState(new SettingsState());

    }

    void ClearProcess()
    {

        if (In.GetButton(ButtonPinMapping.startTwoPlayers)) clearTimer += Time.deltaTime;
        else clearTimer -= Time.deltaTime;
        clearTimer = Mathf.Clamp(clearTimer, 0.0f, 2.0f);
        ProcessImageTimer(ClearImage, clearTimer, 2);

        if (clearTimer == 2)
        {
            clearTimer = 0.0f;
            Clear();
        }

    }
    private void Clear()
    {
        acceptTimer = 0;
        clearTimer = 0;
        enteredSymbols = 0;
        symbols.Clear();

        foreach (var go in spawnedObjs)
        {
            Destroy(go);
        }
        spawnedObjs.Clear();
        ready = false;
    }


    void ButtonsProcess()
    {
        if (enteredSymbols >= SymbolsCount) return;

        foreach (ButtonPinMapping button in availableButtons)
        {
            if (In.GetButtonDown(button))
            {
                string combinationStr = GetStrCombination(button);
                symbols.Add(combinationStr);
                DisplaySymbol(combinationStr);
                enteredSymbols++;
                return;
            }
        }

    }

    void DisplaySymbol(string symbol)
    {
        GameObject prefab = symbol switch
        {
            "L1" => L1,
            "L2" => L2,
            "R1" => R1,
            "R2" => R2,
            "A1" => D1,
            "A2" => D2,
            _ => L1
        };

        GameObject spawned = Instantiate(prefab, slots[enteredSymbols]);
        spawnedObjs.Add(spawned);
    }

    string GetStrCombination(ButtonPinMapping button)
    => button switch
    {
        ButtonPinMapping.left1 => "L1",
        ButtonPinMapping.left2 => "L2",
        ButtonPinMapping.right1 => "R1",
        ButtonPinMapping.right2 => "R2",
        ButtonPinMapping.down1 => "A1",
        ButtonPinMapping.down2 => "A2",
        _ => null
    };


    void ProcessImageTimer(Image image, float time, float maxtime)
        => image.fillAmount = fillCurve.Evaluate(time / maxtime);

    bool AllButtonsUp()
    {
        bool anyButtonDown =
            In.GetButtonAnyPlayer(PlayerAction.left) ||
            In.GetButtonAnyPlayer(PlayerAction.right) ||
            In.GetButtonAnyPlayer(PlayerAction.down) ||
            In.GetButtonDown(ButtonPinMapping.startOnePlayer) ||
            In.GetButtonDown(ButtonPinMapping.startOnePlayer);

        if (anyButtonDown) return false;
        else
        {
            ModalWindow.SetActive(false);
            return true;
        }
    }

}