import { ActivatedRouteSnapshot, Route, RouterStateSnapshot } from '@angular/router';
import { List } from '../utils';
import { AllowFn, IqserPermissionsData, IqserPermissionsRouterData, IqserRedirectToNavigationParameters } from './types';

export function isFunction<T>(value: unknown): value is T {
    return typeof value === 'function';
}

export function isPlainObject(value: unknown): boolean {
    if (Object.prototype.toString.call(value) !== '[object Object]') {
        return false;
    }

    const prototype = Object.getPrototypeOf(value);
    return prototype === null || prototype === Object.prototype;
}

export function isString(value: unknown): value is string {
    return typeof value === 'string';
}

export function isBoolean(value: unknown): value is boolean {
    return typeof value === 'boolean';
}

export function isArray<T>(value: unknown): value is List<T>;
export function isArray<T>(value: unknown): value is T[] {
    return Array.isArray(value);
}

export function toArray(value?: string | List): List {
    return isString(value) ? [value] : (value ?? []);
}

export function isRedirectWithParameters(object: any | IqserRedirectToNavigationParameters): object is IqserRedirectToNavigationParameters {
    return isPlainObject(object) && (!!object.navigationCommands || !!object.navigationExtras);
}

export function transformPermission(
    permissions: IqserPermissionsRouterData,
    route: ActivatedRouteSnapshot | Route,
    state?: RouterStateSnapshot,
): IqserPermissionsData {
    const allow = isFunction<AllowFn>(permissions.allow) ? permissions.allow(route, state) : toArray(permissions.allow);
    const redirectTo = permissions.redirectTo;

    return {
        allow,
        redirectTo,
    };
}