/*
 * Copyright 2019 Flipkart Internet Pvt. Ltd.
 *
 * Licensed 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
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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 com.flipkart.android.proteus.toolbox;

import java.math.BigDecimal;

/**
 * LazilyParsedNumber
 *
 * <p>This class is copied from Google's implementation of LazilyParsedNumber which can be found at
 * the following link @{link
 * https://github.com/google/gson/blob/master/gson/src/main/java/com/google/gson/internal/LazilyParsedNumber.java}
 *
 * @author adityasharat
 */
public class LazilyParsedNumber extends Number {

  private final String value;

  /**
   * @param value must not be null
   */
  public LazilyParsedNumber(String value) {
    this.value = value;
  }

  @Override
  public int intValue() {
    try {
      return Integer.parseInt(value);
    } catch (NumberFormatException e) {
      try {
        return (int) Long.parseLong(value);
      } catch (NumberFormatException nfe) {
        return new BigDecimal(value).intValue();
      }
    }
  }

  @Override
  public long longValue() {
    try {
      return Long.parseLong(value);
    } catch (NumberFormatException e) {
      return new BigDecimal(value).longValue();
    }
  }

  @Override
  public float floatValue() {
    return Float.parseFloat(value);
  }

  @Override
  public double doubleValue() {
    return Double.parseDouble(value);
  }

  @Override
  public String toString() {
    return value;
  }

  @Override
  public int hashCode() {
    return value.hashCode();
  }

  @Override
  public boolean equals(Object obj) {
    if (this == obj) {
      return true;
    }
    if (obj instanceof LazilyParsedNumber) {
      LazilyParsedNumber other = (LazilyParsedNumber) obj;
      //noinspection StringEquality
      return value == other.value || value.equals(other.value);
    }
    return false;
  }
}
