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

@Pipe({
  name: "shortDate",
  standalone: false,
})
export class ShortDatePipe implements PipeTransform {
  public sameDayFormat: string = "h:mmA";
  public sameYearFormat: string = "MMM DD h:mmA";
  public differentYearFormat: string = "MMM DD YYYY h:mmA";

  // fake now is added for testability. It is difficult to test based on the
  // clock of the system.
  transform(dateStr, fakeNow?): string {
    const date = moment(dateStr);
    const now = fakeNow || moment();

    if (date.isSame(now, "day")) {
      return date.format(this.sameDayFormat);
    }
    if (date.isSame(now, "year")) {
      return date.format(this.sameYearFormat);
    }
    return date.format(this.differentYearFormat);
  }
}