using UnityEngine;

public enum ScreenRotateState {
    Free,
    LandscapeOnly,
    PortraitOnly
}

public enum SimpleDeviceOrientation {
    Unkown,
    Portrait,
    Landscape,
}

public static class ScreenExtensions {

    public static bool IsNarrowScreen(){
        float height = Screen.height;
        float width = Screen.width;
        if(height > width){
            return 16.1f / 9.0f < height / width;
        }else{
            return 16.1f / 9.0f < width / height;
        }
    }

    public static bool HasSafeArea(){
        float height = Screen.height;
        float width = Screen.width;
        if(height > width){
#if UNITY_EDITOR
            return Screen.height != (int)GetSafeArea().height;
#else
            return Screen.height != (int)Screen.safeArea.height;
#endif
        }else{
#if UNITY_EDITOR
            return Screen.width != (int)GetSafeArea().width;
#else
            return Screen.width != (int)Screen.safeArea.width;
#endif
        }
    }

    public static Rect GetSafeArea(){
#if UNITY_EDITOR
        if((Screen.width == 1125 && Screen.height == 2436) || 
            (Screen.width == 2436 && Screen.height == 1125)){
            var safeArea = Screen.safeArea;
            if(safeArea.height > safeArea.width){
                safeArea.height = 2202;
                safeArea.y = 102;
                safeArea.width = 1125;
            }else{
                safeArea.height = 1062;
                safeArea.y = 63;
                safeArea.width = 2172;
                safeArea.x = 132;
            }
            return safeArea;
        }else{
            return Screen.safeArea;
        }
#else
        return Screen.safeArea;
#endif
    }
    public static int GetSafeAreaTop(){
        var safeArea = GetSafeArea();
        return (int)((Screen.height - safeArea.height - safeArea.y) / safeArea.height * 1136.0f);
    }
    public static int GetSafeAreaBottom(){
        var safeArea = GetSafeArea();
        return (int)(safeArea.y / safeArea.height * 1136.0f);
    }

    public static bool IsiPhoneX(){
        return (NativeUtils.getWidth() == 1125 && NativeUtils.getHeight() == 2436)  // iPhone X XS
            || (NativeUtils.getWidth() == 2436 && NativeUtils.getHeight() == 1125)  // iPhone X XS
            || (NativeUtils.getWidth() ==  828 && NativeUtils.getHeight() == 1792)  // iPhone XR
            || (NativeUtils.getWidth() == 1792 && NativeUtils.getHeight() ==  828)  // iPhone XR
            || (NativeUtils.getWidth() == 1242 && NativeUtils.getHeight() == 2688)  // iPhone XSMax
            || (NativeUtils.getWidth() == 2688 && NativeUtils.getHeight() == 1242); // iPhone XSMax
    }

    public static void ChangeScreenRotateState(MonoBehaviour behaviour, ScreenRotateState state){
        switch(state){
        case ScreenRotateState.Free:
            Screen.autorotateToLandscapeLeft = true;
            Screen.autorotateToLandscapeRight = true;
            Screen.autorotateToPortrait = true;
            Screen.autorotateToPortraitUpsideDown = true;
            break;
        case ScreenRotateState.LandscapeOnly:
            Screen.autorotateToLandscapeLeft = true;
            Screen.autorotateToLandscapeRight = true;
            Screen.autorotateToPortrait = false;
            Screen.autorotateToPortraitUpsideDown = false;
#if UNITY_ANDROID
            // Portrait時に自動でLandscapeにならないので強制変更してからの自動化
            if(Screen.orientation == ScreenOrientation.Portrait || Screen.orientation == ScreenOrientation.PortraitUpsideDown){
                Screen.orientation = ScreenOrientation.LandscapeLeft;
                behaviour.CallWaitForOneFrame(() => Screen.orientation = ScreenOrientation.AutoRotation);
            }
#endif
            break;
        case ScreenRotateState.PortraitOnly:
            Screen.autorotateToLandscapeLeft = false;
            Screen.autorotateToLandscapeRight = false;
            Screen.autorotateToPortrait = true;
            Screen.autorotateToPortraitUpsideDown = true;
#if UNITY_ANDROID
            // Landscape時に自動でPortraitにならないので強制変更してからの自動化
            if(Screen.orientation == ScreenOrientation.LandscapeLeft || Screen.orientation == ScreenOrientation.LandscapeRight){
                Screen.orientation = ScreenOrientation.Portrait;
                behaviour.CallWaitForOneFrame(() => Screen.orientation = ScreenOrientation.AutoRotation);
            }
#endif
            break;
        }
    }

    public static SimpleDeviceOrientation DeviceOrientationToSimpleDeviceOrientation(DeviceOrientation deviceOrientation){
        switch(deviceOrientation){
        case DeviceOrientation.Portrait:
        case DeviceOrientation.PortraitUpsideDown:
            return SimpleDeviceOrientation.Portrait;
        case DeviceOrientation.LandscapeLeft:
        case DeviceOrientation.LandscapeRight:
            return SimpleDeviceOrientation.Landscape;
        default:
            return Screen.width < Screen.height ? SimpleDeviceOrientation.Portrait : SimpleDeviceOrientation.Landscape;
        }
    }
}