// This Source Code is in the Public Domain per: http://unlicense.org
package org.litesoft.core.simpletypes.currency;

import org.litesoft.core.simpletypes.nonpublic.*;

public final class Money extends AbstractFixedPointLong<Money>
{
    private static final long serialVersionUID = 1L;

    private /* final */ Currency mCurrency;

    @SuppressWarnings({"deprecation", "UnusedDeclaration"}) @Deprecated /** for Serialization */
    protected Money()
    {
    }

    public Money( long pValue, Currency pCurrency )
    {
        super( pValue, pCurrency.getDefaultFractionDigits(), pCurrency.getFormatControl() );
        mCurrency = pCurrency;
    }

    public Currency getCurrency()
    {
        return mCurrency;
    }

    public static Money fromString( Currency pCurrency, String pToString )
    {
        Money rv = new Money( 0, pCurrency );
        rv.setValueTo( pToString );
        return rv;
    }

    @Override
    public boolean equals( LL_FloatingPointLong<Money> them )
    {
        if ( them instanceof Money )
        {
            return isCompatibleCurrency( (Money) them ) && super.equals( them );
        }
        return super.equals( them );
    }

    @Override
    public int compareTo( Money them )
    {
        assertLikeCurrency( them );
        return super.compareTo( them );
    }

    public boolean lessThan( Money them )
    {
        return lessThan( compareTo( them ) );
    }

    public boolean greaterThan( Money them )
    {
        return greaterThan( compareTo( them ) );
    }

    private boolean isCompatibleCurrency( Money them )
    {
        return (them != null) && ((this.getCurrency() == null) || (them.getCurrency() == null) || this.getCurrency().equals( them.getCurrency() ));
    }

    private void assertLikeCurrency( Money them )
    {
        if ( !isCompatibleCurrency( them ) )
        {
            throw new ClassCastException( "Unable to cast Money with Currency '" + getCurrency( them ) + "' to Money with Currency '" + getCurrency() + "'" );
        }
    }

    private Currency getCurrency( Money them )
    {
        return (them != null) ? them.getCurrency() : null;
    }

    // todo: Math support...
}