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

public class StringView : MonoBehaviour, IView
{
    [SerializeField] private GameObject TextSlotPrefab;
    [SerializeField] private RectTransform Content;
    public AudioClip clip;

    [SerializeField] float blockWidth = 150f;
    private Setting setting;
    Vector2 targetPosition;
    Vector2 velocity = Vector2.zero;
    public UnityEvent OnChangeReady { get; }
    Coroutine coroutine;
    bool generated = false;

    public GameObject left, right;


    private void OnEnable()
    {
        if (coroutine == null)
        {
            coroutine = StartCoroutine(Display());
        }
    }
    private void OnDisable()
    {
        StopAllCoroutines();
        coroutine = null;
    }



    //Тут придется id настройки давать. А почему бы не везде так давать.
    public void Initialize(string settingId)
    {
        setting = SettingsManager.Container.TryGetSetting(settingId);
        if (setting.Type != SettingType.String)
        {
            Debug.LogError("Настройка не того типа (string)");
            return;
        }

        GenerateLine();
        StartCoroutine(Display());
    }
    public void ChangeValue(string newValue)
    {
        int index = setting.AllowedValues.IndexOf(setting.StringValue);
        Vector2 newtargetPosition = new Vector2(-index * blockWidth, 0);
        if(newtargetPosition != targetPosition)
        {
            targetPosition = newtargetPosition;
            SoundManager.instance.playClip(clip);
        }


        SetupPointers(index);
    }

    private void SetupPointers(int index)
    {
        if (index == 0)
        {
            left.SetActive(false);
            right.SetActive(true);
        }
        else if (index == setting.AllowedValues.Count - 1)
        {
            left.SetActive(true);
            right.SetActive(false);
        }
        else
        {
            left.SetActive(true);
            right.SetActive(true);
        }

    }

    private void GenerateLine()
    {
        float XPosition = 0;
        foreach (string text in setting.AllowedValues)
        {
            RectTransform rect = Instantiate(TextSlotPrefab, Content).GetComponent<RectTransform>();
            rect.anchoredPosition = new Vector2(XPosition, 0);
            XPosition += blockWidth;


            TextMeshProUGUI label = rect.GetComponent<TextMeshProUGUI>();
            label.text = text;
        }

        //переместиться на текущее значение
        int index = setting.AllowedValues.IndexOf(setting.StringValue);
        targetPosition = new Vector2(-index * blockWidth, 0);
        SetupPointers(index);
        generated = true;
    }

    IEnumerator Display()
    {
        if (!generated) yield break;
        while (true)
        {
            Content.anchoredPosition = Vector2.SmoothDamp(current: Content.anchoredPosition,
                                                          target: targetPosition,
                                                          currentVelocity: ref velocity,
                                                          smoothTime: 0.1f);
            yield return null;
        }
    }

}