/*
 * Copyright 2004-present 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
 *
 *      https://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.security.test.web.servlet.showcase.csrf;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.security.web.csrf.CsrfTokenRepository;
import org.springframework.security.web.csrf.HttpSessionCsrfTokenRepository;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit.jupiter.SpringExtension;
import org.springframework.test.context.web.WebAppConfiguration;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;

import static org.springframework.security.test.web.servlet.request.SecurityMockMvcRequestPostProcessors.csrf;
import static org.springframework.security.test.web.servlet.setup.SecurityMockMvcConfigurers.springSecurity;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.put;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

@ExtendWith(SpringExtension.class)
@ContextConfiguration(classes = CustomCsrfShowcaseTests.Config.class)
@WebAppConfiguration
public class CustomCsrfShowcaseTests {

	@Autowired
	private WebApplicationContext context;

	@Autowired
	private CsrfTokenRepository repository;

	private MockMvc mvc;

	@BeforeEach
	public void setup() {
		this.mvc = MockMvcBuilders.webAppContextSetup(this.context)
			.defaultRequest(get("/").with(csrf()))
			.apply(springSecurity())
			.build();
	}

	@Test
	public void postWithCsrfWorks() throws Exception {
		this.mvc.perform(post("/").with(csrf())).andExpect(status().isNotFound());
	}

	@Test
	public void postWithCsrfWorksWithPut() throws Exception {
		this.mvc.perform(put("/").with(csrf())).andExpect(status().isNotFound());
	}

	@Configuration
	@EnableWebSecurity
	@EnableWebMvc
	static class Config {

		@Bean
		SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
			// @formatter:off
			http
				.csrf((csrf) -> csrf
					.csrfTokenRepository(repo()));
			return http.build();
			// @formatter:on
		}

		@Autowired
		void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
			// @formatter:off
			auth
				.inMemoryAuthentication()
					.withUser("user").password("password").roles("USER");
			// @formatter:on
		}

		@Bean
		CsrfTokenRepository repo() {
			HttpSessionCsrfTokenRepository repo = new HttpSessionCsrfTokenRepository();
			repo.setParameterName("custom_csrf");
			return repo;
		}

	}

}
