// @flow

import { isIPhoneX, Platform } from '../base/react';

const IPHONE_OFFSET = 20;
const IPHONEX_OFFSET = 44;

/**
* Determines the offset to be used for the device.
* This uses a custom implementation to minimize empty area around screen,
* especially on iPhone X.
*
* @returns {number}
*/
export function getSafetyOffset() {
    if (Platform.OS === 'android') {
        /* Android doesn't need offset, except the Essential phone. Should be
        * addressed later with a generic solution.
        */
        return 0;
    }

    if (isIPhoneX()) {
        return IPHONEX_OFFSET;
    }

    return IPHONE_OFFSET;
}