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/*
 The MIT License

 Copyright (c) 2004-2015 Paul R. Holser, Jr.

 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the
 "Software"), to deal in the Software without restriction, including
 without limitation the rights to use, copy, modify, merge, publish,
 distribute, sublicense, and/or sell copies of the Software, and to
 permit persons to whom the Software is furnished to do so, subject to
 the following conditions:

 The above copyright notice and this permission notice shall be
 included in all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

package org.graylog.shaded.opensearch2.joptsimple;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Locale;
import java.util.Set;

import org.graylog.shaded.opensearch2.joptsimple.internal.Strings;

import static java.util.Collections.*;
import static org.graylog.shaded.opensearch2.joptsimple.internal.Messages.*;

/**
 * Thrown when a problem occurs during option parsing.
 *
 * @author Paul Holser
 */
public abstract class OptionException extends RuntimeException {
    private static final long serialVersionUID = -1L;

    private final List options = new ArrayList<>();

    protected OptionException( List options ) {
        this.options.addAll( options );
    }

    protected OptionException( Collection> options ) {
        this.options.addAll( specsToStrings( options ) );
    }

    protected OptionException( Collection> options, Throwable cause ) {
        super( cause );
        this.options.addAll( specsToStrings( options ) );
    }

    private List specsToStrings( Collection> options ) {
        List strings = new ArrayList<>();
        for ( OptionSpec each : options )
            strings.add( specToString( each ) );
        return strings;
    }

    private String specToString( OptionSpec option ) {
        return Strings.join( new ArrayList<>( option.options() ), "/" );
    }

    /**
     * Gives the option being considered when the exception was created.
     *
     * @return the option being considered when the exception was created
     */
    public List options() {
        return unmodifiableList( options );
    }

    protected final String singleOptionString() {
        return singleOptionString( options.get( 0 ) );
    }

    protected final String singleOptionString( String option ) {
        return option;
    }

    protected final String multipleOptionString() {
        StringBuilder buffer = new StringBuilder( "[" );

        Set asSet = new LinkedHashSet( options );
        for ( Iterator iter = asSet.iterator(); iter.hasNext(); ) {
            buffer.append( singleOptionString(iter.next()) );
            if ( iter.hasNext() )
                buffer.append( ", " );
        }

        buffer.append( ']' );

        return buffer.toString();
    }

    static OptionException unrecognizedOption( String option ) {
        return new UnrecognizedOptionException( option );
    }

    @Override
    public final String getMessage() {
        return localizedMessage( Locale.getDefault() );
    }

    final String localizedMessage( Locale locale ) {
        return formattedMessage( locale );
    }

    private String formattedMessage( Locale locale ) {
        return message( locale, "org.graylog.shaded.opensearch2.joptsimple.ExceptionMessages", getClass(), "message", messageArguments() );
    }

    abstract Object[] messageArguments();
}