import { Status } from "../../DataFrame";
import { IDIService } from "../../IDIService";
import { ResponseResult } from "../FieldChangeResult";
import { IPicture } from "../Pictures/IPicture";
import { AccessLevel, IUser } from "./IUser";
export interface IUsersService extends IDIService {
    GetUsersAsync(): Promise<IUser[]>;
    CanEditUser(user: IUser): boolean;
    CanEditUsersOfAccessLevel(level: AccessLevel): boolean;
    /**
    * Returns user by ID, or the currently logged user when the 'id' parameter is not present.
    * @param id GUID of user
    * @returns 'null' when user not exists or other error ocurs, 'IUser' when request finished successful.
    */
    GetUserAsync(id?: string): Promise<IUser | null>;
    /**
    * Function creates user with given data
    * @param user user to add
    * @returns ResponseResult<Status> with relevant status, as ResponseResult data we can get
    *  - EmailIsAlreadyUsed
    *  - EmailIsInIncorrectFormat
    *  - EmailIsToShort
    *  - PasswordMustBeDifferentThanEmail
    *  - PasswordIsToShort
    *  - UserWithGivenEmailAlreadyExists
    *  - GuidMustBeEmpty
    *  - UnknownError
    *  - (empty string)
    */
    CreateUserAsync(user: IUser, password: string): Promise<ResponseResult<Status>>;
    /**
    * Function to change user password
    * @param user
    * @param password
    * @returns ResponseResult<Status> with relevant status, as ResponseResult data we can get
    *  - PasswordMustBeDifferentThanEmail
    *  - PasswordIsToShort
    *  - CannotGetUser
    *  - GuidCannotBeEmpty
    *  - UnknownError
    *  - (empty string)
    */
    ChangePasswordAsync(user: IUser, password: string): Promise<ResponseResult<Status>>;
    /**
    * Function to edit given user
    * @param user updated user data
    * @returns ResponseResult<Status> with relevant status, as ResponseResult data we can get
    *  - EmailIsAlreadyUsed
    *  - EmailIsInIncorrectFormat
    *  - EmailIsToShort
    *  - GuidCannotBeEmpty
    *  - UnknownError
    *  - (empty string)
    */
    UpdateUserAsync(user: IUser): Promise<ResponseResult<Status>>;
    /**
    * Function to remove user by given ID
    * @param id the identifier of the user to be deleted, if ID is empty - the current user will be deleted.
    * @returns relevant status
    */
    DeleteUserAsync(id?: string): Promise<Status>;
    /**
     * Function to get user profile picture
     * @param pictureGuid
     * @returns
     * - Picture when request finished with success
     * - ResponseResult<Status> with relevant message when error occurs, below described statuses with assigned messages:
     * - WrongData | GuidCannotBeEmpty
     * - UnknownError | NoDataInResult
     * - ResourceDoesNotExists | PictureNotFound
     * - FatalError | ExceptionOccurred
     * - other status | UnknownReason
     */
    GetUserProfilePictureAsync(user: IUser): Promise<IPicture | ResponseResult<Status>>;
    /**
     * Function to set profile picture. Picture coud be edited (if exists) or added.
     * @param user
     * @param base64PictureString
     *  ResponseResult<Status> with relevant message:
     * - OK | PictureSet
     * - WrongData | GuidCannotBeEmpty
     * - Error | ErrorWhenTryingToCheckIfCurrentProfilePictureExists
     * - all statuses form AddPictureAsync | PictureServiceError
     * - all statuses from EditPictureAsync | PictureServiceError
     */
    SetUserProfilePictureAsync(user: IUser, base64PictureString: string): Promise<ResponseResult<Status>>;
}