import { OnInit, ChangeDetectorRef } from '@angular/core';
import { PurchaseService } from '@schoolbelle/api/purchase';
import { FormControl, FormArray, FormGroup } from '@angular/forms';
import { Subscription } from 'rxjs';
export declare class EffectiveRangeComponent implements OnInit {
    private purchase;
    private cdRef;
    disableStartingDate: boolean;
    allowCustomDate: boolean;
    form: FormGroup;
    products: FormArray;
    startsAt: FormControl;
    expiresAt: FormControl;
    months: FormControl;
    span: FormControl;
    paymentType: FormControl;
    maxDate: Date;
    /**
     * 2019.10.04 -> 2020.02.29
     *
     * 2020.01.01 -> 2020.02.29
     *
     * 2020.04.01 -> 2021.02.28
     */
    endOfSchoolYear: Date;
    howLong: 'oneYear' | 'tillEndOfSchoolYear';
    subscriptions: Subscription;
    shouldExtend: boolean;
    constructor(purchase: PurchaseService, cdRef: ChangeDetectorRef);
    ngOnInit(): void;
    ngOnDestroy(): void;
    private refreshMaxDate;
    private refreshEndOfSchoolYear;
    private getLastDayOfFebOfYear;
    /**
     * ceil
     */
    getNumberOfMonths(): number;
    /**
     *
     * @param date1 early date
     * @param date2 late date
     */
    private getNumberOfDiffInMonths;
}