/***
 * Copyright (c) 2009 Caelum - www.caelum.com.br/opensource
 * All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * 	http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package br.com.caelum.vraptor.http;

import static javax.servlet.RequestDispatcher.INCLUDE_REQUEST_URI;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.sameInstance;
import static org.mockito.Matchers.any;
import static org.mockito.Matchers.anyString;
import static org.mockito.Mockito.when;

import java.util.EnumSet;

import javax.servlet.http.HttpServletRequest;

import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;

import br.com.caelum.vraptor.controller.ControllerMethod;
import br.com.caelum.vraptor.controller.HttpMethod;
import br.com.caelum.vraptor.http.route.MethodNotAllowedException;
import br.com.caelum.vraptor.http.route.Router;

public class DefaultControllerTranslatorTest {

	@Rule
	public ExpectedException exception = ExpectedException.none();

	private @Mock Router router;
	private @Mock HttpServletRequest request;

	private @Mock ControllerMethod method;

	private VRaptorRequest webRequest;


	private DefaultControllerTranslator translator;

	@Before
	public void setup() {
		MockitoAnnotations.initMocks(this);

		this.webRequest = new VRaptorRequest(request);
		this.translator = new DefaultControllerTranslator(router);
		when(request.getContextPath()).thenReturn("");
	}

	@Test
	public void handlesInclude() {

		when(request.getAttribute(INCLUDE_REQUEST_URI)).thenReturn("/url");
		when(request.getMethod()).thenReturn("POST");
		when(router.parse("/url", HttpMethod.POST, webRequest)).thenReturn(method);

		ControllerMethod controller = translator.translate(webRequest);
		assertThat(controller, is(sameInstance(method)));
	}

	@Test
	public void canHandleTheCorrectMethod() {

		when(request.getRequestURI()).thenReturn("/url");
		when(request.getMethod()).thenReturn("POST");
		when(router.parse("/url", HttpMethod.POST,webRequest)).thenReturn(method);

		ControllerMethod controller = translator.translate(webRequest);
		assertThat(controller, is(equalTo(method)));
	}

	@Test
	public void shouldAcceptCaseInsensitiveRequestMethods() {
		when(request.getRequestURI()).thenReturn("/url");
		when(request.getMethod()).thenReturn("pOsT");
		when(router.parse("/url", HttpMethod.POST,webRequest)).thenReturn(method);

		ControllerMethod controller = translator.translate(webRequest);

		assertThat(controller, is(equalTo(method)));
	}

	@Test
	public void shouldAcceptCaseInsensitiveGetRequestUsingThe_methodParameter() {
		when(request.getRequestURI()).thenReturn("/url");
		when(request.getParameter("_method")).thenReturn("gEt");
		when(request.getMethod()).thenReturn("POST");
		when(router.parse("/url", HttpMethod.GET, webRequest)).thenReturn(method);

		ControllerMethod controller = translator.translate(webRequest);
		assertThat(controller, is(equalTo(method)));
	}


	@Test
	public void shouldThrowExceptionWhenRequestANotKnownMethod() {
		exception.expect(MethodNotAllowedException.class);
		exception.expectMessage("Method COOK is not allowed for requested URI. Allowed Methods are [GET, POST]");
		
		when(request.getRequestURI()).thenReturn("/url");
		when(request.getMethod()).thenReturn("COOK");
		when(router.parse(anyString(), any(HttpMethod.class), any(MutableRequest.class))).thenReturn(method);
		when(router.allowedMethodsFor("/url")).thenReturn(EnumSet.of(HttpMethod.GET, HttpMethod.POST));

		translator.translate(webRequest);
	}

	@Test
	public void shouldOverrideTheHttpMethodByUsingThe_methodParameter() {
		when(request.getRequestURI()).thenReturn("/url");
		when(request.getParameter("_method")).thenReturn("DELETE");
		when(request.getMethod()).thenReturn("POST");
		when(router.parse("/url", HttpMethod.DELETE, webRequest)).thenReturn(method);

		ControllerMethod controller = translator.translate(webRequest);
		assertThat(controller, is(equalTo(method)));
	}

	@Test
	public void canHandleUrlIfRootContext() {
		when(request.getRequestURI()).thenReturn("/url");
		when(request.getContextPath()).thenReturn("");
		when(request.getMethod()).thenReturn("GET");
		when(router.parse("/url", HttpMethod.GET, webRequest)).thenReturn(method);

		ControllerMethod controller = translator.translate(webRequest);
		assertThat(controller, is(equalTo(method)));

	}

	@Test
	public void canHandleUrlIfNonRootContext() {
		when(request.getRequestURI()).thenReturn("/custom_context/url");
		when(request.getContextPath()).thenReturn("/custom_context");
		when(request.getMethod()).thenReturn("GET");
		when(router.parse("/url", HttpMethod.GET, webRequest)).thenReturn(method);

		ControllerMethod controller = translator.translate(webRequest);
		assertThat(controller, is(equalTo(method)));
	}

	@Test
	public void canHandleUrlIfPlainRootContext() {
		when(request.getRequestURI()).thenReturn("/");
		when(request.getMethod()).thenReturn("GET");
		when(router.parse("/", HttpMethod.GET, webRequest)).thenReturn(method);

		ControllerMethod controller = translator.translate(webRequest);
		assertThat(controller, is(equalTo(method)));
   	}

	@Test
	public void canHandleComposedUrlIfPlainRootContext() {
		when(request.getRequestURI()).thenReturn("/products/1");
		when(request.getMethod()).thenReturn("GET");
		when(router.parse("/products/1", HttpMethod.GET, webRequest)).thenReturn(method);

		ControllerMethod controller = translator.translate(webRequest);
		assertThat(controller, is(equalTo(method)));
	}

	@Test
	public void canHandleComposedUrlIfNonRootContext() {
		when(request.getRequestURI()).thenReturn("/custom_context/products/1");
		when(request.getContextPath()).thenReturn("/custom_context");
		when(request.getMethod()).thenReturn("GET");
		when(router.parse("/products/1", HttpMethod.GET, webRequest)).thenReturn(method);

		ControllerMethod controller = translator.translate(webRequest);
		assertThat(controller, is(equalTo(method)));
	}
	@Test
	public void canHandleUrlWithAppendedJSessionID() {
		when(request.getRequestURI()).thenReturn(
				"/custom_context/products/1;jsessionid=aslfasfaslkj22234lkjsdfaklsf",
				"/custom_context/products/1;JSESSIONID=aslfasfaslkj22234lkjsdfaklsf",
				"/custom_context/products/1;jsessionID=aslfasfaslkj22234lkjsdfaklsf");
		when(request.getContextPath()).thenReturn("/custom_context");
		when(request.getMethod()).thenReturn("GET");
		when(router.parse("/products/1", HttpMethod.GET, webRequest)).thenReturn(method);

		assertThat(translator.translate(webRequest), is(equalTo(method)));
		assertThat(translator.translate(webRequest), is(equalTo(method)));
		assertThat(translator.translate(webRequest), is(equalTo(method)));

	}

	@Test
	public void canHandleUrlIfNonRootContextButPlainRequest() {
		when(request.getRequestURI()).thenReturn("/custom_context/");
		when(request.getContextPath()).thenReturn("/custom_context");
		when(request.getMethod()).thenReturn("GET");
		when(router.parse("/", HttpMethod.GET, webRequest)).thenReturn(method);

		ControllerMethod controller = translator.translate(webRequest);
		assertThat(controller, is(equalTo(method)));
	}

}