export interface ContextMenuType {
    visible: boolean;
    position: {
        top: number;
        left: number;
    };
    menu: ContextMenu
}

export interface ContextMenu {
    entries: ContextMenuEntry[];
}

interface ContextMenuEntryWithAction {
    menuText: string;
    actionTrigger: string;
}

interface ContextMenuEntryWithChildren {
    expanded: boolean;
    menuText: string;
    children: ContextMenuEntry[];
}

type ContextMenuEntry = ContextMenuEntryWithAction | ContextMenuEntryWithChildren;

export type ExtractActionTriggers<T> =
    T extends { actionTrigger: infer U } ? U :
        T extends { children: infer C } ? ExtractActionTriggers<C> :
            T extends (infer R)[] ? ExtractActionTriggers<R> :
                never;

export function menuEntryWithAction(entry: ContextMenuEntry): entry is ContextMenuEntryWithAction {
    return 'actionTrigger' in entry;
}

export function menuEntryWithChildren(entry: ContextMenuEntry): entry is ContextMenuEntryWithChildren {
    return 'children' in entry;
}