/*******************************************************************************
 * Copyright (c) 2012-2013 University of Stuttgart.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and the Apache License 2.0 which both accompany this distribution,
 * and are available at http://www.eclipse.org/legal/epl-v10.html
 * and http://www.apache.org/licenses/LICENSE-2.0
 *
 * Contributors:
 *     Oliver Kopp - initial API and implementation
 *******************************************************************************/
package org.eclipse.winery.repository.resources.interfaces;

import java.util.List;

import javax.ws.rs.Consumes;
import javax.ws.rs.FormParam;
import javax.ws.rs.POST;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;

import org.apache.commons.lang3.StringUtils;
import org.eclipse.winery.model.tosca.TBoolean;
import org.eclipse.winery.model.tosca.TParameter;
import org.eclipse.winery.repository.backend.BackendUtils;
import org.eclipse.winery.repository.resources._support.IPersistable;
import org.eclipse.winery.repository.resources._support.collections.withid.EntityWithIdCollectionResource;
import org.restdoc.annotations.RestDocParam;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.sun.jersey.api.view.Viewable;

public class ParametersResource extends EntityWithIdCollectionResource<ParameterResource, TParameter> {
	
	private static final Logger logger = LoggerFactory.getLogger(ParametersResource.class);
	
	
	public ParametersResource(List<TParameter> parameters, IPersistable typeResource) {
		super(ParameterResource.class, TParameter.class, parameters, typeResource);
	}
	
	@POST
	@Consumes(MediaType.APPLICATION_FORM_URLENCODED)
	@Produces(MediaType.TEXT_PLAIN)
	// @formatter:off
	public Response createParamter(
			@FormParam("name") String name,
			@FormParam("type") String type,
			@FormParam("required") @RestDocParam(description="type tYesNo, not Boolean. For convenience, on/off is also supported. In case this parameter is not provided, 'off' is assumed. This is in contrast to the specification, but it eases implementing the UI") String required) {
		// @formatter:on
		if (StringUtils.isEmpty(name)) {
			return Response.status(Status.BAD_REQUEST).entity("name must not be null").build();
		}
		if (StringUtils.isEmpty(type)) {
			return Response.status(Status.BAD_REQUEST).entity("type must not be null").build();
		}
		
		TParameter param = new TParameter();
		param.setName(name);
		param.setType(type);
		TBoolean tb;
		if (required == null) {
			// The specification states that the default value is "yes"
			// We assume "no", because Chrome does not send the checkbox data if a checkbox is not checked
			tb = TBoolean.NO;
		} else {
			if (required.equalsIgnoreCase("on")) {
				tb = TBoolean.YES;
			} else if (required.equalsIgnoreCase("off")) {
				tb = TBoolean.NO;
			} else {
				try {
					tb = TBoolean.valueOf(required);
				} catch (java.lang.IllegalArgumentException e) {
					return Response.status(Status.BAD_REQUEST).entity("Wrong format of required").build();
				}
			}
		}
		param.setRequired(tb);
		
		this.list.add(param);
		
		return BackendUtils.persist(this.res);
	}
	
	@Override
	public String getId(TParameter entity) {
		return entity.getName();
	}
	
	@Override
	public Viewable getHTML() {
		throw new IllegalStateException("Not yet implemented.");
	}
	
}