RESTClient.java

package kornell.api.client;

import static kornell.core.util.StringUtils.isSome;
import static kornell.core.util.StringUtils.mkurl;

import java.util.Date;
import java.util.logging.Logger;

import com.github.gwtbootstrap.client.ui.constants.AlertType;
import com.google.gwt.http.client.RequestBuilder;
import com.google.gwt.user.client.Cookies;
import com.google.gwt.user.client.Window;

import kornell.core.entity.AuthClientType;
import kornell.gui.client.util.ClientProperties;
import kornell.gui.client.util.view.KornellNotification;

public class RESTClient {
	
	Logger logger = Logger.getLogger(RESTClient.class.getName());
	
	private String apiURL = "/api";
	
	public String getApiUrl() {		
		return apiURL;
	}
	
	protected ExceptionalRequestBuilder GET(String... path) {
		String url = mkurl(getApiUrl(), path);
		url = appendTimestampIfIE(url);
		ExceptionalRequestBuilder reqBuilder = new ExceptionalRequestBuilder(
				RequestBuilder.GET, url);
		setAuthenticationHeaders(reqBuilder);
		return reqBuilder;
	}

	protected ExceptionalRequestBuilder HEAD(String... path) {
		String url = mkurl(getApiUrl(), path);
		ExceptionalRequestBuilder reqBuilder = new ExceptionalRequestBuilder(
				RequestBuilder.HEAD, url);
		setAuthenticationHeaders(reqBuilder);
		return reqBuilder;
	}

	protected ExceptionalRequestBuilder PUT(String... path) {
		String url = mkurl(getApiUrl(), path);
		ExceptionalRequestBuilder reqBuilder = new ExceptionalRequestBuilder(
				RequestBuilder.PUT, url);
		setAuthenticationHeaders(reqBuilder);
		return reqBuilder;
	}

	protected ExceptionalRequestBuilder POST(String... path) {
		String url = mkurl(getApiUrl(), path);
		ExceptionalRequestBuilder reqBuilder = new ExceptionalRequestBuilder(
				RequestBuilder.POST, url);
		setAuthenticationHeaders(reqBuilder);
		return reqBuilder;
	}
	
	protected ExceptionalRequestBuilder POST_LOGIN(String username, String password, String institutionUUID, String... path) {
		String url = mkurl(getApiUrl(), path);
		ExceptionalRequestBuilder reqBuilder = new ExceptionalRequestBuilder(
				RequestBuilder.POST, url);
		reqBuilder.setHeader("Content-Type","application/x-www-form-urlencoded");
		
		StringBuilder sb = new StringBuilder();
		sb.append("userkey=" + username + "&");
		sb.append("password=" + password + "&");
		sb.append("institutionUUID=" + institutionUUID + "&");
		sb.append("clientType=" + AuthClientType.web.toString());
		
		reqBuilder.setRequestData(sb.toString());
		return reqBuilder;
	}

	protected ExceptionalRequestBuilder DELETE(String... path) {
		String url = mkurl(getApiUrl(), path);
		ExceptionalRequestBuilder reqBuilder = new ExceptionalRequestBuilder(
				RequestBuilder.DELETE, url);
		setAuthenticationHeaders(reqBuilder);
		return reqBuilder;
	}

	protected void setAuthenticationHeaders(ExceptionalRequestBuilder reqBuilder) {
		String auth = ClientProperties.get(ClientProperties.X_KNL_TOKEN);
		if (isSome(auth)) {
			reqBuilder.setHeader(ClientProperties.X_KNL_TOKEN, auth);
		}
	}
	
	public void locationAssign(String... path) {
		if(Cookies.isCookieEnabled()){
			ClientProperties.setCookie(ClientProperties.X_KNL_TOKEN, ClientProperties.get(ClientProperties.X_KNL_TOKEN), new Date(new Date().getTime() + 2000));			
			String url = appendTimestampIfIE(mkurl(getApiUrl(), path));
			Window.open(url, "_blank", "");
		} else {
			KornellNotification.show("Por motivos de segurança, é necessário que os cookies estejam ativados para esta operação. Entre em contato com o suporte caso tenha alguma dúvida.", AlertType.ERROR, 10000);
		}
	}
	
	public String appendTimestampIfIE(String url) {
		if((Window.Navigator.getUserAgent().toLowerCase().indexOf("trident/") != -1))
			return url + (url.indexOf("?") == -1 ? "?" : "&") + "t=" + (new Date()).getTime();				
	    return url;
	}
}