using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using TMPro;
public class ListGameResolutions : MonoBehaviour
{
    public TMP_Dropdown ResolutionDropdown;
    private List<Resolution> FilteredResolutions;
    //int DropdownResolutionValue;
    private Resolution[] resolutions;
    private float currentRefreshrate;
    private int currentResolutionIndex = 0;
    private int fl;
    private int fw;

    public static string ToAspectRatio(int width, int height)
    {
        int r;
        int oa = width;
        int ob = height;
        while (height != 0)
        {
            r = width % height;
            width = height;
            height = r;
        }
        return (oa / width).ToString() + ":" + (ob / width).ToString();
    }

    void Start()
    {
        if (ResolutionDropdown)
        {
            resolutions = Screen.resolutions;
            FilteredResolutions = new List<Resolution>();
            ResolutionDropdown.ClearOptions();
            currentRefreshrate = Screen.currentResolution.refreshRate;

            for (int i = 0; i < resolutions.Length; i++)
            {
                if (resolutions[i].refreshRate == currentRefreshrate)
                {
                    FilteredResolutions.Add(resolutions[i]);
                }
            }
            List<string> options = new List<string>();

            for (int i = 0; i < FilteredResolutions.Count; i++)
            {

                if (ToAspectRatio(FilteredResolutions[i].width, FilteredResolutions[i].height) == "16:9")
                {
                    string ResolOption = FilteredResolutions[i].width + "x" + FilteredResolutions[i].height;
                    options.Add(ResolOption);

                    if (FilteredResolutions[i].width == Screen.width && FilteredResolutions[i].height == Screen.height)
                    {
                        currentResolutionIndex = i;
                    }
                }
            }
            ResolutionDropdown.AddOptions(options);
            ResolutionDropdown.value = currentResolutionIndex;
            ResolutionDropdown.RefreshShownValue();
            //}
        }
    }

    public void SetWindowResolution(int ResolutionIndex)
    {
        Resolution resolution = FilteredResolutions[ResolutionIndex];
        Screen.SetResolution(resolution.width, resolution.height, true);
        fl = resolution.width;
        fw = resolution.height;
        PlayerPrefs.SetInt("ResolutionIndex", ResolutionIndex);
        Debug.Log("Changed window resolution index in PlayerPrefs: " + PlayerPrefs.GetInt("ResolutionIndex"));
    }
}