import { DomainEvent, RecordedActivity, Result } from '@serenity-js/core/lib/domain';
import { FileSystem } from '@serenity-js/core/lib/io/file_system';
import { Stage, StageCrewMember } from '@serenity-js/core/lib/stage';
import { TimingBehaviour } from './photographer-timing';
export declare function photographer(): StageCrewMember;
export declare class ActivityOfInterest {
    private resultsOfInterest;
    constructor(resultsOfInterest: Result);
    isAResultOfInterest(result: Result): boolean;
}
export declare class PhotographySchedule {
    Failures: ActivityOfInterest;
    Tasks_and_Interactions: ActivityOfInterest;
    Activity_Starts_and_Finishes: TimingBehaviour;
    Activity_Starts: TimingBehaviour;
    Activity_Finishes: TimingBehaviour;
    private activityOfInterest;
    private photoTiming;
    private pathToPhotos;
    private photoNamingStrategy;
    takesPhotosOf(activityOfInterest: ActivityOfInterest): PhotographySchedule;
    takesPhotosWhen(photoTiming: TimingBehaviour): PhotographySchedule;
    storesPhotosAt(pathToPhotos: string): PhotographySchedule;
    build(): Photographer;
}
export declare class Photographer implements StageCrewMember {
    private fieldOfInterest;
    private fs;
    private naming;
    private static Events_of_Interest;
    private stage;
    private strategy;
    static who(scheduler: (schedule: PhotographySchedule) => PhotographySchedule): Photographer;
    constructor(fieldOfInterest: ActivityOfInterest, behaviour: TimingBehaviour, fs: FileSystem, naming?: PictureNamingStrategy);
    assignTo(stage: Stage): void;
    notifyOf(event: DomainEvent<any>): void;
    canWork(): boolean;
    photograph(subject: RecordedActivity, timestamp: number): void;
    private photographWorkOf(actor);
}
export interface PictureNamingStrategy {
    nameFor(base64encodedData: string): string;
}
export declare class Md5HashedPictureNames implements PictureNamingStrategy {
    private fileExtension;
    constructor(fileExtension?: string);
    nameFor(base64encodedData: string): string;
    private extension();
}