/*
 * generated by Xtext 2.13.0
 */
package rba.tool.editor.endpoint

import com.google.inject.Injector
import javax.servlet.annotation.WebServlet
import org.eclipse.emf.common.util.URI
import org.eclipse.xtext.resource.IResourceServiceProvider
import org.eclipse.xtext.util.DisposableRegistry
import org.eclipse.xtext.web.server.InvalidRequestException.UnknownLanguageException
import org.eclipse.xtext.web.servlet.HttpServiceContext
import org.eclipse.xtext.web.servlet.XtextServlet
import rba.tool.editor.endpoint.server.persistence.RBAModelResourceBaseProviderImpl
import org.eclipse.xtext.web.server.XtextServiceDispatcher.ServiceDescriptor
import org.eclipse.xtext.web.server.IServiceResult

/**
 * Deploy this class into a servlet container to enable DSL-specific services.
 */
@WebServlet(name='XtextServices', urlPatterns='/xtext-service/*')
class RBAModelServlet extends XtextServlet {

	val serviceProviderRegistry = IResourceServiceProvider.Registry.INSTANCE

	DisposableRegistry disposableRegistry

	override init() {
		super.init()
		val resourceBaseProvider = new RBAModelResourceBaseProviderImpl('')
		new RBAModelWebSetup(resourceBaseProvider).createInjectorAndDoEMFRegistration
	}

	override protected getInjector(HttpServiceContext serviceContext) throws UnknownLanguageException {
		var IResourceServiceProvider resourceServiceProvider

		val emfURI = URI.createURI('./sample.rba')
		val contentType = serviceContext.getParameter('contentType')
		if (contentType.nullOrEmpty) {

			resourceServiceProvider = serviceProviderRegistry.getResourceServiceProvider(emfURI)
			if (resourceServiceProvider === null) {
				if (emfURI.toString.empty)
					throw new UnknownLanguageException('''Unable to identify the Xtext language: missing parameter 'resource' or 'contentType'.''')
				else
					throw new UnknownLanguageException('''Unable to identify the Xtext language for resource emfURI.''')
			}
		} else {
			resourceServiceProvider = serviceProviderRegistry.getResourceServiceProvider(emfURI, contentType)
			if (resourceServiceProvider === null)
				throw new UnknownLanguageException('''Unable to identify the Xtext language for contentType contentType.''')
		}
		return resourceServiceProvider.get(Injector)
	}
	
	override protected getEncoding(ServiceDescriptor service, IServiceResult result) {
		'Shift_JIS'
	}

	override destroy() {
		if (disposableRegistry !== null) {
			disposableRegistry.dispose()
			disposableRegistry = null
		}
		super.destroy()
	}

}