/**
 * Copyright (C) 2013 - present by OpenGamma Inc. and the OpenGamma group of companies
 * 
 * Please see distribution for license.
 */
package com.opengamma.analytics.financial.interestrate;

import com.opengamma.analytics.financial.interestrate.swaption.derivative.SwaptionCashFixedIbor;
import com.opengamma.analytics.financial.interestrate.swaption.derivative.SwaptionPhysicalFixedIbor;
import com.opengamma.analytics.financial.interestrate.swaption.method.SwaptionCashFixedIborBlackMethod;
import com.opengamma.analytics.financial.interestrate.swaption.method.SwaptionPhysicalFixedIborBlackMethod;
import com.opengamma.analytics.financial.model.option.definition.YieldCurveWithBlackSwaptionBundle;
import com.opengamma.util.ArgumentChecker;

/**
 * 
 */
@Deprecated
public class DeltaBlackCalculator extends InstrumentDerivativeVisitorAdapter<YieldCurveBundle, Double> {

  /**
   * The unique instance of the calculator.
   */
  private static final DeltaBlackCalculator INSTANCE = new DeltaBlackCalculator();

  /**
   * Gets the calculator instance.
   * @return The calculator.
   */
  public static DeltaBlackCalculator getInstance() {
    return INSTANCE;
  }

  /**
   * Constructor.
   */
  DeltaBlackCalculator() {
  }

  /**
   * The methods used in the calculator.
   */
  private static final SwaptionPhysicalFixedIborBlackMethod PHYSICAL_SWAPTION = SwaptionPhysicalFixedIborBlackMethod.getInstance();
  private static final SwaptionCashFixedIborBlackMethod CASH_SWAPTION = SwaptionCashFixedIborBlackMethod.getInstance();

  @Override
  public Double visitSwaptionCashFixedIbor(final SwaptionCashFixedIbor swaption, final YieldCurveBundle curves) {
    ArgumentChecker.notNull(swaption, "swaption");
    ArgumentChecker.notNull(curves, "curves");
    if (curves instanceof YieldCurveWithBlackSwaptionBundle) {
      final YieldCurveWithBlackSwaptionBundle curvesBlack = (YieldCurveWithBlackSwaptionBundle) curves;
      return CASH_SWAPTION.delta(swaption, curvesBlack).getAmount();
    }
    throw new UnsupportedOperationException("The DeltaBlackCalculator visitor visitSwaptionCashFixedIbor requires a YieldCurveWithBlackSwaptionBundle as data.");
  }

  @Override
  public Double visitSwaptionPhysicalFixedIbor(final SwaptionPhysicalFixedIbor swaption, final YieldCurveBundle curves) {
    ArgumentChecker.notNull(swaption, "swaption");
    ArgumentChecker.notNull(curves, "curves");
    if (curves instanceof YieldCurveWithBlackSwaptionBundle) {
      final YieldCurveWithBlackSwaptionBundle curvesBlack = (YieldCurveWithBlackSwaptionBundle) curves;
      return PHYSICAL_SWAPTION.delta(swaption, curvesBlack).getAmount();
    }
    throw new UnsupportedOperationException("The DeltaBlackCalculator visitor visitSwaptionPhysicalFixedIbor requires a YieldCurveWithBlackSwaptionBundle as data.");
  }
}