using UnityEngine;

namespace DuloGames.UI
{
    public class Demo_ResolutionSelect : MonoBehaviour {

        [SerializeField] private UISelectField m_SelectField;

        protected void Start()
        {
            if (this.m_SelectField == null)
                return;

            // Clear the options
            this.m_SelectField.ClearOptions();
            
            // Add the supported resolutions
            Resolution[] resolutions = Screen.resolutions;

            foreach (Resolution res in resolutions)
            {
                // Add new resolution option
                this.m_SelectField.AddOption(res.width + "x" + res.height + " @ " + res.refreshRate + "Hz");
            }

            Resolution currentResolution = Screen.currentResolution;

            // Set the current resolution as selected
            this.m_SelectField.SelectOption(currentResolution.width + "x" + currentResolution.height + " @ " + currentResolution.refreshRate + "Hz");
        }

        protected void OnEnable()
        {
            if (this.m_SelectField == null)
                return;

            this.m_SelectField.onChange.AddListener(OnSelectedOption);
        }

        protected void OnDisable()
        {
            if (this.m_SelectField == null)
                return;

            this.m_SelectField.onChange.RemoveListener(OnSelectedOption);
        }

        protected void OnSelectedOption(int index, string option)
        {
            Resolution res = Screen.resolutions[index];

            if (res.Equals(Screen.currentResolution))
                return;

            Screen.SetResolution(res.width, res.height, true, res.refreshRate);
        }
    }
}