import { ContentType } from './ContentType';
import { TAPIBridgeFunction } from './FusePlugin';
import { IFusePermissionRequest } from './IFusePermissionRequest';
import { TFuseSerializable } from './TSerializable';
import { FusePermissionGrantResult } from './FusePermissionGrantResult';
/**
 * Invoked to handle when permission justification is necessary.
 *
 * This is an android concept, so it will only be invoked on Android devices,
 * as iOS has justification text embedded into the actual permission prompt.
 *
 * User dialog should be displayed to explain why the app wants to use the permission.
 * Android recommends giving the user the ability to accept or deny at this time, if the user deny,
 * then resolve the promise will false.
 *
 * Return true if the permission request should proceed.
 */
export type TFuseJustificationHandler = () => Promise<boolean>;
interface __IPermissionRequestArguments<T extends number> {
    permissionSet: T[];
    isJustified: boolean;
}
export type TFusePermissionRequestArguments<T extends number> = TFuseSerializable<__IPermissionRequestArguments<T>>;
export type TFuseAPIPermissionRequest<T extends number = number> = TAPIBridgeFunction<ContentType.JSON, TFusePermissionRequestArguments<T>>;
/**
 * Abstract class to handle permission request.
 * Concrete classes should implement the protected _request method to call on their
 * permission request Fuse API.
 */
export declare class FusePermissionRequest<TSupportedPermission extends number> implements IFusePermissionRequest<TSupportedPermission> {
    private static readonly TAG;
    private $api;
    private $permissionSet;
    private $justificationHandler;
    constructor(apiBridge: TFuseAPIPermissionRequest<TSupportedPermission>, permissionSet: TSupportedPermission[], justificationHandler?: TFuseJustificationHandler);
    getPermissionSet(): TSupportedPermission[];
    private $request;
    private $onJustificationRequest;
    request(): Promise<FusePermissionGrantResult<TSupportedPermission>>;
}
export {};