/*
 * Copyright 2002-2018 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.oauth2.server.resource.authentication;

import java.util.Arrays;
import java.util.Collection;

import org.junit.jupiter.api.Test;

import org.springframework.core.convert.converter.Converter;
import org.springframework.security.authentication.AbstractAuthenticationToken;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.oauth2.jwt.Jwt;
import org.springframework.security.oauth2.jwt.TestJwts;

import static org.assertj.core.api.Assertions.assertThat;

/**
 * Tests for {@link ReactiveJwtAuthenticationConverterAdapter}
 *
 * @author Josh Cummings
 */
public class ReactiveJwtAuthenticationConverterAdapterTests {

	Converter<Jwt, AbstractAuthenticationToken> converter = new JwtAuthenticationConverter();

	ReactiveJwtAuthenticationConverterAdapter jwtAuthenticationConverter = new ReactiveJwtAuthenticationConverterAdapter(
			this.converter);

	@Test
	public void convertWhenTokenHasScopeAttributeThenTranslatedToAuthorities() {
		Jwt jwt = TestJwts.jwt().claim("scope", "message:read message:write").build();
		AbstractAuthenticationToken authentication = this.jwtAuthenticationConverter.convert(jwt).block();
		Collection<GrantedAuthority> authorities = authentication.getAuthorities();
		// @formatter:off
		assertThat(authorities)
				.containsExactly(new SimpleGrantedAuthority("SCOPE_message:read"),
						new SimpleGrantedAuthority("SCOPE_message:write"));
		// @formatter:on
	}

	@Test
	public void convertWhenTokenHasEmptyScopeAttributeThenTranslatedToNoAuthorities() {
		Jwt jwt = TestJwts.jwt().claim("scope", "").build();
		AbstractAuthenticationToken authentication = this.jwtAuthenticationConverter.convert(jwt).block();
		Collection<GrantedAuthority> authorities = authentication.getAuthorities();
		assertThat(authorities).containsExactly();
	}

	@Test
	public void convertWhenTokenHasScpAttributeThenTranslatedToAuthorities() {
		Jwt jwt = TestJwts.jwt().claim("scp", Arrays.asList("message:read", "message:write")).build();
		AbstractAuthenticationToken authentication = this.jwtAuthenticationConverter.convert(jwt).block();
		Collection<GrantedAuthority> authorities = authentication.getAuthorities();
		// @formatter:off
		assertThat(authorities)
				.containsExactly(new SimpleGrantedAuthority("SCOPE_message:read"),
						new SimpleGrantedAuthority("SCOPE_message:write"));
		// @formatter:on
	}

	@Test
	public void convertWhenTokenHasEmptyScpAttributeThenTranslatedToNoAuthorities() {
		Jwt jwt = TestJwts.jwt().claim("scp", Arrays.asList()).build();
		AbstractAuthenticationToken authentication = this.jwtAuthenticationConverter.convert(jwt).block();
		Collection<GrantedAuthority> authorities = authentication.getAuthorities();
		assertThat(authorities).containsExactly();
	}

	@Test
	public void convertWhenTokenHasBothScopeAndScpThenScopeAttributeIsTranslatedToAuthorities() {
		Jwt jwt = TestJwts.jwt().claim("scp", Arrays.asList("message:read", "message:write"))
				.claim("scope", "missive:read missive:write").build();
		AbstractAuthenticationToken authentication = this.jwtAuthenticationConverter.convert(jwt).block();
		Collection<GrantedAuthority> authorities = authentication.getAuthorities();
		// @formatter:off
		assertThat(authorities)
				.containsExactly(new SimpleGrantedAuthority("SCOPE_missive:read"),
						new SimpleGrantedAuthority("SCOPE_missive:write"));
		// @formatter:on
	}

	@Test
	public void convertWhenTokenHasEmptyScopeAndNonEmptyScpThenScopeAttributeIsTranslatedToNoAuthorities() {
		// @formatter:off
		Jwt jwt = TestJwts.jwt()
				.claim("scp", Arrays.asList("message:read", "message:write"))
				.claim("scope", "")
				.build();
		// @formatter:on
		AbstractAuthenticationToken authentication = this.jwtAuthenticationConverter.convert(jwt).block();
		Collection<GrantedAuthority> authorities = authentication.getAuthorities();
		assertThat(authorities).containsExactly();
	}

}
