/*******************************************************************************
 * This file is part of the Symfony eclipse plugin.
 * 
 * (c) Robert Gruendler <r.gruendler@gmail.com>
 * 
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 ******************************************************************************/
package com.dubture.symfony.core.codeassist.contexts;

import org.eclipse.core.resources.IProjectNature;
import org.eclipse.dltk.core.CompletionRequestor;
import org.eclipse.dltk.core.ISourceModule;
import org.eclipse.php.internal.core.util.text.TextSequence;

import com.dubture.symfony.core.builder.SymfonyNature;
import com.dubture.symfony.core.log.Logger;
import com.dubture.symfony.core.util.text.SymfonyTextSequenceUtilities;


/**
 * 
 * This context represents the state when staying in a function parameter to retrieve
 * a service from the DependencyInjection container. <br/>
 * Example:
 * 
 * <pre>
 *  $em = $this->get('|)
 * </pre>
 * 
 * 
 * @author "Robert Gruendler <r.gruendler@gmail.com>"
 *
 */
@SuppressWarnings("restriction")
public class ServiceContainerContext extends
	QuoteIdentifierContext {
	
	
	@Override
	public boolean isValid(ISourceModule sourceModule, int offset,
			CompletionRequestor requestor) {

		
		if (super.isValid(sourceModule, offset, requestor)) {
			try {
				
				IProjectNature nature = sourceModule.getScriptProject().getProject().getNature(SymfonyNature.NATURE_ID);
				
				// wrong nature
				if(!(nature instanceof SymfonyNature)) {
					return false;	
				}

				if (requestor == null || !requestor.getClass().toString().toLowerCase().contains("symfony"))
				    return false;
				
				TextSequence statementText = getStatementText();
				if (SymfonyTextSequenceUtilities.isInServiceContainerFunction(statementText) > -1) {
					
					//TODO: check if the containing class is implementing a ContainerAware Interface
					return true;
				}
				
			} catch (Exception e) {				
				Logger.logException(e);
			}
		}		
		
		return false;
	}
}