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

public class ComboSelection : MonoBehaviour
{
    public string[] Options;
    public string SelectedOption;
    public int SelectedIndex =0;
    [SerializeField]private TMP_Text selectedText;
    [SerializeField]private Button btnNext;
    [SerializeField]private Button btnPrev;

    public UnityEvent OnSelectedChanged;   

    CanvasGroup canvasGroup;

    void OnValidate(){
        if(selectedText==null) selectedText = GetComponentInChildren<TMP_Text>();
    }

    void Awake(){
        canvasGroup = GetComponent<CanvasGroup>();
        btnNext.onClick.AddListener(OnNext);
        btnPrev.onClick.AddListener(OnPrev);

        Refresh();
    }

    public void SetInteractable(bool val){
        canvasGroup.interactable = val;
    }

    void OnNext(){
        if(SelectedIndex < Options.Length-1){
            SelectedIndex++;
        }else{
            SelectedIndex = 0;
        }

        Refresh();
    }

    void OnPrev(){
        if(SelectedIndex > 0){
            SelectedIndex--;
        }else{
            SelectedIndex = Options.Length-1;
        }

        Refresh();
    }

    public void SetValue(string newVal){
        for(int i=0; i <  Options.Length; i++){
            if(Options[i].ToLower() == newVal.ToLower()){
                SelectedIndex = i;
                Refresh();
                return;
            }
        }

        Debug.LogError($"Cant set value to an non-existing option ({newVal})");


    }

    public void Refresh(){
        selectedText.text = Options[SelectedIndex];
        SelectedOption = Options[SelectedIndex];
        OnSelectedChanged.Invoke();
    }
}