/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2010, Red Hat, Inc. and/or its affiliates or third-party contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat, Inc.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */

package org.hibernate.search.query.dsl.impl;

import java.util.ArrayList;
import java.util.List;

import org.hibernate.search.query.dsl.PhraseMatchingContext;
import org.hibernate.search.query.dsl.PhraseTermination;

/**
 * @author Emmanuel Bernard
 */
public class ConnectedPhraseMatchingContext implements PhraseMatchingContext {
	private final QueryBuildingContext queryContext;
	private final QueryCustomizer queryCustomizer;
	private final PhraseQueryContext phraseContext;
	private final List<FieldContext> fieldContexts;
	//when a varargs of fields are passed, apply the same customization for all.
	//keep the index of the first context in this queue
	private int firstOfContext = 0;

	public ConnectedPhraseMatchingContext(String fieldName,
											PhraseQueryContext phraseContext,
											QueryCustomizer queryCustomizer,
											QueryBuildingContext queryContext) {
		this.queryContext = queryContext;
		this.queryCustomizer = queryCustomizer;
		this.phraseContext = phraseContext;
		this.fieldContexts = new ArrayList<FieldContext>(4);
		this.fieldContexts.add( new FieldContext( fieldName ) );
	}

	@Override
	public PhraseMatchingContext andField(String field) {
		this.fieldContexts.add( new FieldContext( field ) );
		this.firstOfContext = fieldContexts.size() - 1;
		return this;
	}

	@Override
	public PhraseTermination sentence(String sentence) {
		phraseContext.setSentence( sentence );
		return new ConnectedMultiFieldsPhraseQueryBuilder( phraseContext, queryCustomizer, fieldContexts, queryContext );
	}

	@Override
	public PhraseMatchingContext boostedTo(float boost) {
		for ( FieldContext fieldContext : getCurrentFieldContexts() ) {
			fieldContext.getFieldCustomizer().boostedTo( boost );
		}
		return this;
	}

	private List<FieldContext> getCurrentFieldContexts() {
		return fieldContexts.subList( firstOfContext, fieldContexts.size() );
	}

	@Override
	public PhraseMatchingContext ignoreAnalyzer() {
		for ( FieldContext fieldContext : getCurrentFieldContexts() ) {
			fieldContext.setIgnoreAnalyzer( true );
		}
		return this;
	}

	@Override
	public PhraseMatchingContext ignoreFieldBridge() {
		//this is a no-op
		return this;
	}
}
