/*
 * Copyright 2002-2015 the original author or authors.
 *
 * 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 org.springframework.web.util;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.junit.Test;

import org.springframework.http.HttpHeaders;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServletServerHttpRequest;
import org.springframework.mock.web.test.MockHttpServletRequest;
import org.springframework.util.MultiValueMap;

import static org.junit.Assert.*;

/**
 * @author Juergen Hoeller
 * @author Arjen Poutsma
 * @author Rossen Stoyanchev
 * @author Sebastien Deleuze
 */
public class WebUtilsTests {

	@Test
	public void findParameterValue() {
		Map<String, Object> params = new HashMap<String, Object>();
		params.put("myKey1", "myValue1");
		params.put("myKey2_myValue2", "xxx");
		params.put("myKey3_myValue3.x", "xxx");
		params.put("myKey4_myValue4.y", new String[] {"yyy"});

		assertNull(WebUtils.findParameterValue(params, "myKey0"));
		assertEquals("myValue1", WebUtils.findParameterValue(params, "myKey1"));
		assertEquals("myValue2", WebUtils.findParameterValue(params, "myKey2"));
		assertEquals("myValue3", WebUtils.findParameterValue(params, "myKey3"));
		assertEquals("myValue4", WebUtils.findParameterValue(params, "myKey4"));
	}

	@Test
	public void extractFilenameFromUrlPath() {
		assertEquals("index", WebUtils.extractFilenameFromUrlPath("index.html"));
		assertEquals("index", WebUtils.extractFilenameFromUrlPath("/index.html"));
		assertEquals("view", WebUtils.extractFilenameFromUrlPath("/products/view.html"));
		assertEquals("view", WebUtils.extractFilenameFromUrlPath("/products/view.html?param=a"));
		assertEquals("view", WebUtils.extractFilenameFromUrlPath("/products/view.html?param=/path/a"));
		assertEquals("view", WebUtils.extractFilenameFromUrlPath("/products/view.html?param=/path/a.do"));
	}

	@Test
	public void extractFullFilenameFromUrlPath() {
		assertEquals("index.html", WebUtils.extractFullFilenameFromUrlPath("index.html"));
		assertEquals("index.html", WebUtils.extractFullFilenameFromUrlPath("/index.html"));
		assertEquals("view.html", WebUtils.extractFullFilenameFromUrlPath("/products/view.html"));
		assertEquals("view.html", WebUtils.extractFullFilenameFromUrlPath("/products/view.html?param=a"));
		assertEquals("view.html", WebUtils.extractFullFilenameFromUrlPath("/products/view.html?param=/path/a"));
		assertEquals("view.html", WebUtils.extractFullFilenameFromUrlPath("/products/view.html?param=/path/a.do"));
	}

	@Test
	public void parseMatrixVariablesString() {
		MultiValueMap<String, String> variables;

		variables = WebUtils.parseMatrixVariables(null);
		assertEquals(0, variables.size());

		variables = WebUtils.parseMatrixVariables("year");
		assertEquals(1, variables.size());
		assertEquals("", variables.getFirst("year"));

		variables = WebUtils.parseMatrixVariables("year=2012");
		assertEquals(1, variables.size());
		assertEquals("2012", variables.getFirst("year"));

		variables = WebUtils.parseMatrixVariables("year=2012;colors=red,blue,green");
		assertEquals(2, variables.size());
		assertEquals(Arrays.asList("red", "blue", "green"), variables.get("colors"));
		assertEquals("2012", variables.getFirst("year"));

		variables = WebUtils.parseMatrixVariables(";year=2012;colors=red,blue,green;");
		assertEquals(2, variables.size());
		assertEquals(Arrays.asList("red", "blue", "green"), variables.get("colors"));
		assertEquals("2012", variables.getFirst("year"));

		variables = WebUtils.parseMatrixVariables("colors=red;colors=blue;colors=green");
		assertEquals(1, variables.size());
		assertEquals(Arrays.asList("red", "blue", "green"), variables.get("colors"));
	}

	@Test
	public void isValidOrigin() {
		List<String> allowedOrigins = new ArrayList<>();
		MockHttpServletRequest servletRequest = new MockHttpServletRequest();
		ServerHttpRequest request = new ServletServerHttpRequest(servletRequest);

		servletRequest.setServerName("mydomain1.com");
		request.getHeaders().set(HttpHeaders.ORIGIN, "http://mydomain1.com");
		assertTrue(WebUtils.isValidOrigin(request, allowedOrigins));

		servletRequest.setServerName("mydomain1.com");
		request.getHeaders().set(HttpHeaders.ORIGIN, "http://mydomain1.com:80");
		assertTrue(WebUtils.isValidOrigin(request, allowedOrigins));

		servletRequest.setServerName("mydomain1.com");
		servletRequest.setServerPort(443);
		request.getHeaders().set(HttpHeaders.ORIGIN, "https://mydomain1.com");
		assertTrue(WebUtils.isValidOrigin(request, allowedOrigins));

		servletRequest.setServerName("mydomain1.com");
		servletRequest.setServerPort(443);
		request.getHeaders().set(HttpHeaders.ORIGIN, "https://mydomain1.com:443");
		assertTrue(WebUtils.isValidOrigin(request, allowedOrigins));

		servletRequest.setServerName("mydomain1.com");
		servletRequest.setServerPort(123);
		request.getHeaders().set(HttpHeaders.ORIGIN, "http://mydomain1.com:123");
		assertTrue(WebUtils.isValidOrigin(request, allowedOrigins));

		servletRequest.setServerName("mydomain1.com");
		request.getHeaders().set(HttpHeaders.ORIGIN, "http://mydomain2.com");
		assertFalse(WebUtils.isValidOrigin(request, allowedOrigins));

		servletRequest.setServerName("mydomain1.com");
		request.getHeaders().set(HttpHeaders.ORIGIN, "https://mydomain1.com");
		assertFalse(WebUtils.isValidOrigin(request, allowedOrigins));

		servletRequest.setServerName("invalid-origin");
		request.getHeaders().set(HttpHeaders.ORIGIN, "invalid-origin");
		assertFalse(WebUtils.isValidOrigin(request, allowedOrigins));

		allowedOrigins = Arrays.asList("*");
		servletRequest.setServerName("mydomain1.com");
		request.getHeaders().set(HttpHeaders.ORIGIN, "http://mydomain2.com");
		assertTrue(WebUtils.isValidOrigin(request, allowedOrigins));

		allowedOrigins = Arrays.asList("http://mydomain1.com");
		servletRequest.setServerName("mydomain2.com");
		request.getHeaders().set(HttpHeaders.ORIGIN, "http://mydomain1.com");
		assertTrue(WebUtils.isValidOrigin(request, allowedOrigins));

		allowedOrigins = Arrays.asList("http://mydomain1.com");
		servletRequest.setServerName("mydomain2.com");
		request.getHeaders().set(HttpHeaders.ORIGIN, "http://mydomain3.com");
		assertFalse(WebUtils.isValidOrigin(request, allowedOrigins));
	}

}