// progress-width.pipe.ts
import { Pipe, PipeTransform } from '@angular/core';

//Moment library
import moment from 'moment';

@Pipe({
    standalone: true,
    name: 'progressExpirationWidth',
})
export class ProgressExpirationWidthPipe implements PipeTransform {
    transform(
        expireDate: Date,
        startDate?: Date,
        completedDate?: Date
    ): string {
        const today = moment();
        const expireMoment = moment(expireDate);
        const completedMoment = completedDate ? moment(completedDate) : null;
        const startTaskDate = moment(startDate);

        const totalDays = expireMoment.diff(moment(startTaskDate), 'days');
        const daysLeft = expireMoment.diff(today, 'days');
        const diffTotalandDay = totalDays - daysLeft;

        let percentage: number;

        if (
            completedMoment &&
            completedMoment.isBefore(today) &&
            expireMoment
        ) {
            percentage = 100;
        } else if (diffTotalandDay !== 0) {
            if (!completedMoment || !completedMoment.isValid()) {
                percentage = (daysLeft / totalDays) * 100;
            } else if (completedMoment && completedMoment.isValid()) {
                percentage = 100 - (daysLeft / totalDays) * 100;
            } else {
                percentage = (daysLeft / 365) * 100;
            }
        } else {
            const timeDifference = today.diff(moment(), 'hours');
            if (timeDifference > 0) {
                const daysProgress =
                    totalDays !== 0 ? (1 / totalDays) * 100 : (1 / 365) * 100;
                percentage = daysProgress / (24 / timeDifference);
            } else {
                percentage = 0;
            }
        }

        if (!percentage) {
            percentage = totalDays > 0 ? (daysLeft / totalDays) * 100 : 0;
        }

        return `${percentage}%`;
    }
}