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

public class QrTextInput : MonoBehaviour
{

    [SerializeField] private List<QrTextSlot> slots;
    [SerializeField] private Image frame;
    [TextArea][SerializeField] private string alphabet = "1";

    private QrTextSlot CurrentSlot => slots[index];

    private int index = 0;
    private float LastSwipeLetter = 0;

    [SerializeField] float minInterval = 0.07f;
    [SerializeField] float maxInterval = 0.3f;
    [SerializeField] float acceleration = 3f;
    [SerializeField] private float interval;
    [SerializeField] AudioClip ClickClip;


    private bool CanSwipe => Time.time - LastSwipeLetter > interval;

    private void OnEnable()
    {
        index = 0;
        interval = maxInterval;
    }

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

        CurrentSlot.SetActive(false);
        index = (index + direction + slots.Count) % slots.Count;
        CurrentSlot.SetActive(true);
        ClickSound();
    }

    public void DisableAllSlots()
    {
        foreach(QrTextSlot slot in slots) { slot.SetActive(false); }
    }
    public void EnableFirstSlot()
    {
        index = 0;
        CurrentSlot.SetActive(true);
    }
    
    



    private void ClickSound()
    {
        if (ClickClip != null) SoundManager.instance.playClip(ClickClip);
    }
    public void SwitchLetter(int direction)
    {
        if (direction == 0) {return;}
        if (!CanSwipe) { return; }

        LastSwipeLetter = Time.time;
        interval-= acceleration * Time.deltaTime;
        interval = Mathf.Clamp(interval, minInterval, maxInterval);

        ClickSound();

        int currentLetterIndex = alphabet.IndexOf(CurrentSlot.GetText());
        if (currentLetterIndex != -1)
        {
            currentLetterIndex = (currentLetterIndex + direction + alphabet.Length) % alphabet.Length;
            CurrentSlot.SetText(alphabet[currentLetterIndex].ToString());
        }
        else
        {
            currentLetterIndex = 0;
            CurrentSlot.SetText(alphabet[0].ToString());
        }
    }

    private void Update()
    {
        bool left = In.GetButton(ButtonPinMapping.left1);
        bool right = In.GetButton(ButtonPinMapping.right1);

        if (!(left || right))
        {
            interval = maxInterval;
            LastSwipeLetter = 0;
        }
    }
    public string GetText()
    {
        var sb = new StringBuilder();
        foreach (var slot in slots)
            sb.Append(slot.GetText());

        return sb.ToString().Trim();
    }

    public void SetText(string text)
    {
        if(text.Length > slots.Count)
        {
            text = text.Substring(0, slots.Count - 1);
        }

        int min = Mathf.Min(text.Length, slots.Count);
        for (int i = 0; i < min; i++)
        {
            slots[i].SetText(text[i].ToString());
        }


    }

    public void Light(Color color)
    {
        frame.color = color;
    }


}