import { OnInit, ChangeDetectorRef, EventEmitter } from '@angular/core';
import { Observable, Subscription } from 'rxjs';
import { FileInfoType, FileService } from '@schoolbelle/api/file';
import { Letter, LetterService } from '@schoolbelle/api/letter';
import { GroupService } from '@schoolbelle/api/group';
import { LetterTargetService } from '@schoolbelle/api/letter-target';
import { LocationService } from '@schoolbelle/common/location';
import { AuthService } from '@schoolbelle/api/auth';
import { pushMethod } from '@schoolbelle/api/notification-push';
import { FormGroup, FormControl } from '@angular/forms';
import { LedgerService } from '@schoolbelle/api/ledger';
import { LetterTracker } from './letter-tracker';
import { BoardService } from '@schoolbelle/api/board';
import { TreeService } from '@schoolbelle/api/group-to-group';
import { SurveyV5Service } from '@schoolbelle/api/survey-v5';
export declare type AttatchmentLimits = {
    MAX_FILE_LENGTH: number;
    MAX_VIDEO_LENGTH: number;
    MAX_IMAGE_SIZE: number;
    MAX_FILE_SIZE: number;
};
export declare const DEFAULT_ATTACHMENT_LIMITS: AttatchmentLimits;
export declare enum AttachmentLimitError {
    MAX_FILE_LENGTH = 0,
    MAX_VIDEO_LENGTH = 1,
    MAX_IMAGE_SIZE = 2,
    MAX_FILE_SIZE = 3
}
export declare class LetterWriteAbstractComponent implements OnInit {
    auth: AuthService;
    group: GroupService;
    board: BoardService;
    protected ledger: LedgerService;
    protected file: FileService;
    protected letterService: LetterService;
    protected target: LetterTargetService;
    protected tree: TreeService;
    protected location: LocationService;
    protected cdRef: ChangeDetectorRef;
    protected locale_id: string;
    protected surveyV5: SurveyV5Service;
    letter: Letter;
    letterType: string;
    memberType: 'student' | 'faculty';
    sent: EventEmitter<Letter>;
    form: FormGroup;
    title: FormControl;
    content: FormControl;
    targets: FormControl;
    files: FormControl;
    currentLang: string;
    usedLangs: string[];
    getCurrentLangText(v: string | {
        [lang: string]: string;
    }): string;
    currentMailmergeItemIndex: number;
    showMailmerge: boolean;
    method: pushMethod;
    byteLength: number;
    subscriptions: Subscription;
    tracker: LetterTracker;
    froalaOptions: any;
    constructor(auth: AuthService, group: GroupService, board: BoardService, ledger: LedgerService, file: FileService, letterService: LetterService, target: LetterTargetService, tree: TreeService, location: LocationService, cdRef: ChangeDetectorRef, locale_id: string, surveyV5: SurveyV5Service);
    editing: boolean;
    showExpirationWarning: boolean;
    expires_at: number;
    expirationType: 'valid' | 'soon' | 'expired';
    calculateTranslations(): {
        lang: string;
        title: string;
        content: string;
    }[];
    ngOnInit(): void;
    ngOnDestroy(): void;
    createForm(): void;
    fillForm(): void;
    setInitialTargets(): void;
    fillInDefaultValues(): void;
    initialize(letter?: any): void;
    updateFileList(list: (Blob | FileInfoType)[], limits?: Partial<AttatchmentLimits>): void;
    uploadFiles(selector_id: string, opt?: {
        process?: boolean;
        face_recognition?: boolean;
    }): Observable<any>;
    processTargetsBeforeSend(): void;
    goBack(): void;
    send(opt?: {
        process?: boolean;
        face_recognition?: boolean;
        queue?: boolean;
        v5?: boolean;
    }): Observable<any>;
    canDeactivate(): boolean;
    deleteLang(code: string): void;
}