EmailQuota.java

/**
 * Licensed to Apereo under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright ownership. Apereo
 * licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use
 * this file except in compliance with the License. You may obtain a copy of the License at the
 * following location:
 *
 * <p>http://www.apache.org/licenses/LICENSE-2.0
 *
 * <p>Unless required by applicable law or agreed to in writing, software distributed under the
 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jasig.portlet.emailpreview;

import java.math.BigDecimal;

public class EmailQuota {
  public static final String QUOTA_UNIT_MB = "MB";
  public static final String QUOTA_UNIT_GB = "GB";
  public static final long QUOTA_COEF_MB = 1024;
  public static final long QUOTA_COEF_GB = 1048576; //(1024*1024);

  private static final long TWO_DECIMAL_PLACES = (long) 100.0;

  private long usage;
  private long limit;

  public EmailQuota() {
    this(0, 0);
  }

  public EmailQuota(long limit, long usage) {
    this.limit = limit;
    this.usage = usage;
  }

  public long getLimit() {
    return limit;
  }

  public void setLimit(long limit) {
    this.limit = limit;
  }

  public long getUsage() {
    return usage;
  }

  public void setUsage(long usage) {
    this.usage = usage;
  }

  public String getLimitAsString() {
    return getValueAsString(limit);
  }

  public String getUsageAsString() {
    return getValueAsString(usage);
  }

  public String getUsageAsPercentage() {
    double quotient = ((double) usage / (double) limit);
    double percent = quotient * TWO_DECIMAL_PLACES;
    return new BigDecimal(String.valueOf(percent))
        .setScale(2, BigDecimal.ROUND_DOWN)
        .toString()
        .concat("%");
  }

  private String getValueAsString(long value) {
    String unit = QUOTA_UNIT_MB;
    long coef = QUOTA_COEF_MB;

    if (value > 999999) {
      unit = QUOTA_UNIT_GB;
      coef = QUOTA_COEF_GB;
    }

    return new BigDecimal(String.valueOf(((double) (value)) / coef))
        .setScale(2, BigDecimal.ROUND_DOWN)
        .toString()
        .concat(unit);
  }
}