#if UNITY_WEBGL && !UNITY_EDITOR
using System.Runtime.InteropServices; // for DllImport
#endif

using UnityEngine;

namespace WebGLSupport
{
    static class WebGLFullscreenPlugin
    {
#if UNITY_WEBGL && !UNITY_EDITOR
        [DllImport("__Internal")]
        public static extern void WebGLFullscreenInject();

        [DllImport("__Internal")]
        public static extern void WebGLSetFullscreen();

        [DllImport("__Internal")]
        public static extern void WebGLSetFullscreen2019();
#else
        public static void WebGLFullscreenInject() { }

        public static void WebGLSetFullscreen() { }

        public static void WebGLSetFullscreen2019() { }
#endif
    }

    public static class WebGLFullscreen
    {
        static void Init()
        {
            WebGLFullscreenPlugin.WebGLFullscreenInject();
        }

        [RuntimeInitializeOnLoadMethod]
        static void RuntimeInitializeOnLoadMethod()
        {
            Init();
        }

        public static void SetFullscreen()
        {
#if UNITY_2020_3_OR_NEWER
            WebGLFullscreenPlugin.WebGLSetFullscreen();
#else
            WebGLFullscreenPlugin.WebGLSetFullscreen2019();
#endif
        }

        public static void SetFullscreenOld()
        {
#pragma warning disable CS0618 // 类型或成员已过时
            Application.ExternalCall("SetFullscreenOld");
#pragma warning restore CS0618 // 类型或成员已过时
        }
    }
}