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package org.glassfish.jersey.client.filter;


import java.util.concurrent.Future;

import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.Invocation;
import javax.ws.rs.core.Configuration;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriBuilder;

import org.glassfish.jersey.client.ClientConfig;
import org.glassfish.jersey.client.ClientRequest;
import org.glassfish.jersey.client.ClientResponse;
import org.glassfish.jersey.client.authentication.HttpAuthenticationFeature;
import org.glassfish.jersey.client.spi.AsyncConnectorCallback;
import org.glassfish.jersey.client.spi.Connector;
import org.glassfish.jersey.client.spi.ConnectorProvider;
import org.glassfish.jersey.internal.util.Base64;

import org.junit.Test;
import static org.junit.Assert.assertEquals;

/**
 * HTTP Basic authentication filter test.
 *
 * @author Martin Matula
 */
public class HttpBasicAuthFilterTest {

    @Test
    public void testGet() {
        Client client = ClientBuilder.newClient(new ClientConfig(HttpAuthenticationFeature.basic("Uzivatelske jmeno", "Heslo"))
                .connectorProvider(new TestConnector()));
        Invocation.Builder invBuilder = client.target(UriBuilder.fromUri("/").build()).request();
        Response r = invBuilder.get();

        assertEquals("Basic " + Base64.encodeAsString("Uzivatelske jmeno:Heslo"), r.getHeaderString(HttpHeaders.AUTHORIZATION));
    }

    @Test
    public void testBlankUsernamePassword() {
        Client client = ClientBuilder.newClient(new ClientConfig(HttpAuthenticationFeature.basic("", ""))
                .connectorProvider(new TestConnector()));
        Invocation.Builder invBuilder = client.target(UriBuilder.fromUri("/").build()).request();
        Response r = invBuilder.get();

        assertEquals("Basic " + Base64.encodeAsString(":"), r.getHeaderString(HttpHeaders.AUTHORIZATION));
    }

    private static class TestConnector implements Connector, ConnectorProvider {

        @Override
        public Connector getConnector(Client client, Configuration runtimeConfig) {
            return this;
        }

        @Override
        public ClientResponse apply(ClientRequest requestContext) {
            final ClientResponse responseContext = new ClientResponse(
                    Response.Status.OK, requestContext);

            final String headerValue = requestContext.getHeaderString(HttpHeaders.AUTHORIZATION);
            if (headerValue != null) {
                responseContext.header(HttpHeaders.AUTHORIZATION, headerValue);
            }
            return responseContext;
        }

        @Override
        public Future<?> apply(ClientRequest clientRequest, AsyncConnectorCallback callback) {
            throw new UnsupportedOperationException("Asynchronous execution not supported.");
        }

        @Override
        public void close() {
            // do nothing
        }

        @Override
        public String getName() {
            return null;
        }
    }
}
