/*
 * Copyright (c) 2010, 2023 BSI Business Systems Integration AG
 *
 * This program and the accompanying materials are made
 * available under the terms of the Eclipse Public License 2.0
 * which is available at https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 */
import {dates, JsonDateRange} from '../index';

export class DateRange {
  from: Date;
  to: Date;

  constructor(from?: Date, to?: Date) {
    this.from = from;
    this.to = to;
  }

  /**
   * Checks if given date is covered by the date range.
   *
   * If the truncateToDay parameter is set to true, it
   * truncates the from and to date to day, as well as
   * the date parameter.
   */
  covers(date: Date, truncateToDay?: boolean): boolean {
    let from = this.from, to = this.to, d = date;
    if (truncateToDay) {
      from = dates.trunc(from);
      to = dates.trunc(to);
      d = dates.trunc(d);
    }
    return d >= from && d <= to;
  }

  equals(other: DateRange): boolean {
    if (!other) {
      return false;
    }
    return dates.equals(this.from, other.from) &&
      dates.equals(this.to, other.to);
  }

  toString(): string {
    return `DateRange {from: ${this.from}, to: ${this.to}}`;
  }

  static ensure(dateRange: DateRange | JsonDateRange): DateRange {
    if (!dateRange) {
      return dateRange as DateRange;
    }
    if (dateRange instanceof DateRange) {
      return dateRange;
    }
    return new DateRange(
      dates.ensure(dateRange.from),
      dates.ensure(dateRange.to));
  }
}