import { Pipe, PipeTransform } from '@angular/core';
import moment from 'moment';

// enums
import { eDateTimeFormats } from '../enums';

@Pipe({
    standalone: true,
    name: 'dateFromStringPipe',
})
export class DateFromStringPipe implements PipeTransform {
    transform(
        date: string | Date | null | undefined,
        template?: eDateTimeFormats | string
    ): any {
        switch (template) {
            case eDateTimeFormats.SHORT_FORMAT:
                return moment(date).format('MM/YY');

            case eDateTimeFormats.MONTH_FORMAT:
                return moment(date, 'YYYY-MM-DDTHH:mm:ss.SSS[Z]').format(
                    'MMMM DD, YYYY | hh:mm A'
                );

            case eDateTimeFormats.DIFFERENCE_DAYS: {
                const a = moment();
                const b = moment(date);
                const diff = a.diff(b, 'days');
                return diff < 1
                    ? 'Today'
                    : `${diff} ${diff === 1 ? 'day' : 'days'}`;
            }
            case eDateTimeFormats.DATE_TIME:
                return moment(date).format('MM/DD/YY hh:mm A');

            case eDateTimeFormats.TIME:
                return moment(date).format('hh:mm A');

            case eDateTimeFormats.TIME_AGO:
                return moment(date, 'YYYYMMDD').fromNow();

            default:
                return moment(date).format('MM/DD/YY');
        }
    }
}