using UnityEngine;

namespace NBF.Setting
{
    /// <summary>
    /// 分辨率设置
    /// </summary>
    [Sort(2)]
    public class ResolutionSetting : MultiOption<Resolution>
    {
        private Resolution _defaultResolution;
        public override string Name => "Resolution";
        public override string Group => SettingsDef.Group.Graphic;
        protected override Resolution DefaultValue => _defaultResolution;

        protected override void OnInitialize()
        {
            _defaultResolution = Screen.currentResolution;
            var supportedResolutions = Screen.resolutions;

            foreach (var resolution in supportedResolutions)
            {
                if (resolution.width < 720 || resolution.height < 720) continue;
                AddOption($"{resolution.width}x{resolution.height}", resolution);
            }

            SelectOption(r => AreEqual(r, Screen.currentResolution), defaultIndex: 0);
        }

        protected override void OnApply()
        {
            var resolution = GetSelectedOption();

            switch (Screen.fullScreenMode)
            {
                case FullScreenMode.ExclusiveFullScreen:
                    Screen.SetResolution(Screen.width, Screen.width, FullScreenMode.ExclusiveFullScreen);
                    break;
                case FullScreenMode.FullScreenWindow:
                    Screen.SetResolution(resolution.width, resolution.height, FullScreenMode.FullScreenWindow);
                    break;
                case FullScreenMode.MaximizedWindow:
                    Screen.SetResolution(resolution.width, resolution.height, FullScreenMode.MaximizedWindow);
                    break;
                case FullScreenMode.Windowed:
                    Screen.SetResolution(resolution.width, resolution.height, FullScreenMode.Windowed);
                    break;
                default:
                    Screen.SetResolution(Screen.width, Screen.width, FullScreenMode.ExclusiveFullScreen);
                    break;
            }
        }

        protected override void OnReset()
        {
            SelectOption(r => AreEqual(r, Screen.currentResolution), defaultIndex: 0);
        }


        bool AreEqual(Resolution a, Resolution b)
        {
            return a.width == b.width && a.height == b.height;
        }
    }
}