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/*

 * Copyright 2009 Electronic Business Systems Ltd.

 *

 * This file is part of GSS.

 *

 * GSS is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * GSS 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 General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with GSS.  If not, see <http://www.gnu.org/licenses/>.

 */

package gr.ebs.gss.client.rest;

import gr.ebs.gss.client.GSS;

import gr.ebs.gss.client.exceptions.InsufficientPermissionsException;

import com.google.gwt.http.client.Request;

import com.google.gwt.http.client.RequestCallback;

import com.google.gwt.http.client.Response;

/**

 * @author kman

 *

 */

public abstract class DeleteCommand extends RestCommand{

        boolean complete = false;

        public DeleteCommand(String pathToDelete){

                this(pathToDelete, true);

        }

        public DeleteCommand(String pathToDelete, boolean showLoading){

                setShowLoadingIndicator(showLoading);

                if(isShowLoadingIndicator())

                        GSS.get().showLoadingIndicator();

                final String path;

                if(pathToDelete.endsWith("/"))

                        path = pathToDelete;

                else

                        path = pathToDelete+"/";

                RestRequestBuilder builder = new RestRequestBuilder("DELETE", path);

                try {

                        handleHeaders(builder, path);

                        builder.sendRequest("", new RequestCallback() {

                                public void onError(Request arg0, Throwable arg1) {

                                        complete = true;

                                        DeleteCommand.this.onError(arg1);

                                }

                                public void onResponseReceived(Request arg0, Response arg1) {

                                        complete=true;

                                        if(arg1.getStatusCode() == 204)

                                                onComplete();

                                        else if(arg1.getStatusCode() == 403)

                                                sessionExpired();

                                        else if(arg1.getStatusCode() == 405)

                                                DeleteCommand.this.onError(new InsufficientPermissionsException("You don't have permissions to delete this resource"));

                                        else

                                                DeleteCommand.this.onError(new RestException(path, arg1.getStatusCode(), arg1.getStatusText(), arg1.getText()));

                                }

                        });

                } catch (Exception ex) {

                        complete=true;

                        onError(ex);

                }

        }

        public boolean isComplete() {

                return complete;

        }

        public boolean execute() {

                boolean com = isComplete();

                if(com){

                        if(isShowLoadingIndicator())

                                GSS.get().hideLoadingIndicator();

                        return false;

                }

                return true;

        }

}