import {
    GroupedLayoutsInterface,
    LayoutInterface,
} from './index';

import {
    ObjectUtils,
} from './../../helpers/functions/index';

export default class GroupedLayoutModel {
    public static chooseARandomLayout(
        layouts: GroupedLayoutsInterface,
        lastLayoutValue?: LayoutInterface,
    ) {
        let property;
        while (!property || layouts[property].length === 0) {
            property = ObjectUtils.pickRandomProperty(layouts);
        }

        let nextValue: LayoutInterface;
        while (!nextValue || nextValue === lastLayoutValue) {
            nextValue = ObjectUtils.randomValueFromArray(
                layouts[property],
            );
        }
        lastLayoutValue = nextValue;
        return nextValue;
    }
}