import moment from 'moment';
import { eFilterTime } from '../../enums';

export class TimeFilterHelper {
    static convertTimeToDate(
        period: string,
        year?: number
    ): { fromDate: string; toDate: string } {
        let today: moment.Moment;
        if (year) {
            today = moment().year(year).startOf(eFilterTime.DAY);
        } else {
            today = moment().startOf(eFilterTime.DAY);
        }

        let fromDate: moment.Moment = moment(),
            toDate: moment.Moment = moment();

        switch (period.toLowerCase()) {
            case eFilterTime.TODAY:
                fromDate = moment(today);
                toDate = moment(today);
                break;
            case eFilterTime.YESTERDAY:
                fromDate = moment(today).subtract(1, eFilterTime.DAYS);
                toDate = moment(today).subtract(1, eFilterTime.DAYS);
                break;
            case eFilterTime.THIS_WEEK:
                fromDate = moment(today).startOf(eFilterTime.WEEK);
                toDate = moment(today).endOf(eFilterTime.WEEK);
                break;
            case eFilterTime.LAST_WEEK:
                fromDate = moment(today)
                    .subtract(1, eFilterTime.WEEKS)
                    .startOf(eFilterTime.WEEK);
                toDate = moment(today)
                    .subtract(1, eFilterTime.WEEKS)
                    .endOf(eFilterTime.WEEK);
                break;
            case eFilterTime.NEXT_WEEK:
                fromDate = moment(today)
                    .add(1, eFilterTime.WEEKS)
                    .startOf(eFilterTime.WEEK);
                toDate = moment(today)
                    .add(1, eFilterTime.WEEKS)
                    .endOf(eFilterTime.WEEK);
                break;
            case eFilterTime.ONE_WEEK:
                fromDate = moment(today).subtract(1, eFilterTime.WEEKS);
                toDate = moment(today);
                break;
            case eFilterTime.ONE_WEEK_FUTURE:
                fromDate = moment(today);
                toDate = moment(today).add(1, eFilterTime.WEEKS);
                break;
            case eFilterTime.THIS_MONTH:
                fromDate = moment(today).startOf(eFilterTime.MONTH);
                toDate = moment(today).endOf(eFilterTime.MONTH);
                break;
            case eFilterTime.LAST_MONTH:
                fromDate = moment(today)
                    .subtract(1, eFilterTime.MONTHS)
                    .startOf(eFilterTime.MONTH);
                toDate = moment(today)
                    .subtract(1, eFilterTime.MONTHS)
                    .endOf(eFilterTime.MONTH);
                break;
            case eFilterTime.ONE_MONTH_FUTURE:
                fromDate = moment(today);
                toDate = moment(today).add(1, eFilterTime.MONTHS);
                break;
            case eFilterTime.ONE_MONTH:
                fromDate = moment(today).subtract(1, eFilterTime.MONTHS);
                toDate = moment(today);
                break;
            case eFilterTime.NEXT_MONTH:
                fromDate = moment(today)
                    .add(1, eFilterTime.MONTHS)
                    .startOf(eFilterTime.MONTH);
                toDate = moment(today)
                    .add(1, eFilterTime.MONTHS)
                    .endOf(eFilterTime.MONTH);
                break;
            case eFilterTime.THREE_MONTHS:
                fromDate = moment(today).subtract(3, eFilterTime.MONTHS);
                toDate = moment(today);
                break;
            case eFilterTime.THREE_MONTHS_FUTURE:
                fromDate = moment(today);
                toDate = moment(today)
                    .add(3, eFilterTime.MONTHS)
                    .endOf(eFilterTime.MONTH);
                break;
            case eFilterTime.THIS_QUARTER:
                fromDate = moment(today).startOf(eFilterTime.QUARTER);
                toDate = moment(today).endOf(eFilterTime.QUARTER);
                break;
            case eFilterTime.LAST_QUARTER:
                fromDate = moment(today)
                    .subtract(1, eFilterTime.QUARTERS)
                    .startOf(eFilterTime.QUARTER);
                toDate = moment(today)
                    .subtract(1, eFilterTime.QUARTERS)
                    .endOf(eFilterTime.QUARTER);
                break;
            case eFilterTime.NEXT_QUARTER:
                fromDate = moment(today)
                    .add(1, eFilterTime.QUARTERS)
                    .startOf(eFilterTime.QUARTER);
                toDate = moment(today)
                    .add(1, eFilterTime.QUARTERS)
                    .endOf(eFilterTime.QUARTER);
                break;
            case eFilterTime.THIS_YEAR:
                fromDate = moment(today).startOf(eFilterTime.YEAR);
                toDate = moment(today).endOf(eFilterTime.YEAR);
                break;
            case eFilterTime.ONE_YEAR_FUTURE:
                fromDate = moment(today);
                toDate = moment(today).add(1, eFilterTime.YEARS);
                break;
            case eFilterTime.ONE_YEAR:
                fromDate = moment(today).subtract(1, eFilterTime.YEARS);
                toDate = moment(today);
                break;
            case eFilterTime.LAST_YEAR:
            case eFilterTime.YEAR_BEFORE_LAST:
                fromDate = moment(today).startOf(eFilterTime.YEAR);
                toDate = moment(today).endOf(eFilterTime.YEAR);
                break;
            default:
                break;
        }

        const fromDateFormatted = fromDate.format(
            eFilterTime.MOMENT_DATE_FORMAT
        );
        const toDateFormatted = toDate.format(eFilterTime.MOMENT_DATE_FORMAT);

        return { fromDate: fromDateFormatted, toDate: toDateFormatted };
    }
}