/*
 * Copyright 2012-2017 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.boot.autoconfigure.mustache;

import com.samskivert.mustache.Mustache;
import org.junit.Test;

import org.springframework.boot.test.util.EnvironmentTestUtils;
import org.springframework.boot.web.reactive.context.GenericReactiveWebApplicationContext;
import org.springframework.boot.web.servlet.view.MustacheViewResolver;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;

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

/**
 * Tests for {@link MustacheAutoConfiguration}.
 *
 * @author Brian Clozel
 */
public class MustacheAutoConfigurationTests {

	private AnnotationConfigWebApplicationContext webContext;

	private GenericReactiveWebApplicationContext reactiveWebContext;

	@Test
	public void registerBeansForServletApp() {
		loadWithServlet(null);
		assertThat(this.webContext.getBeansOfType(Mustache.Compiler.class)).hasSize(1);
		assertThat(this.webContext.getBeansOfType(MustacheResourceTemplateLoader.class)).hasSize(1);
		assertThat(this.webContext.getBeansOfType(MustacheViewResolver.class)).hasSize(1);
	}

	@Test
	public void registerCompilerForServletApp() {
		loadWithServlet(CustomCompilerConfiguration.class);
		assertThat(this.webContext.getBeansOfType(MustacheResourceTemplateLoader.class)).hasSize(1);
		assertThat(this.webContext.getBeansOfType(MustacheViewResolver.class)).hasSize(1);
		assertThat(this.webContext.getBeansOfType(Mustache.Compiler.class)).hasSize(1);
		assertThat(this.webContext.getBean(Mustache.Compiler.class).standardsMode).isTrue();
	}

	@Test
	public void registerBeansForReactiveApp() {
		loadWithReactive(null);
		assertThat(this.reactiveWebContext.getBeansOfType(Mustache.Compiler.class)).hasSize(1);
		assertThat(this.reactiveWebContext.getBeansOfType(MustacheResourceTemplateLoader.class)).hasSize(1);
		assertThat(this.reactiveWebContext.getBeansOfType(MustacheViewResolver.class)).isEmpty();
		assertThat(this.reactiveWebContext
				.getBeansOfType(org.springframework.boot.web.reactive.result.view.MustacheViewResolver.class)
		).hasSize(1);
	}


	@Test
	public void registerCompilerForReactiveApp() {
		loadWithReactive(CustomCompilerConfiguration.class);
		assertThat(this.reactiveWebContext.getBeansOfType(Mustache.Compiler.class)).hasSize(1);
		assertThat(this.reactiveWebContext.getBeansOfType(MustacheResourceTemplateLoader.class)).hasSize(1);
		assertThat(this.reactiveWebContext.getBeansOfType(MustacheViewResolver.class)).isEmpty();
		assertThat(this.reactiveWebContext
				.getBeansOfType(org.springframework.boot.web.reactive.result.view.MustacheViewResolver.class)
		).hasSize(1);
		assertThat(this.reactiveWebContext.getBean(Mustache.Compiler.class).standardsMode).isTrue();
	}

	private void loadWithServlet(Class<?> config) {
		this.webContext = new AnnotationConfigWebApplicationContext();
		EnvironmentTestUtils.addEnvironment(this.webContext,
				"spring.mustache.prefix=classpath:/mustache-templates/");
		if (config != null) {
			this.webContext.register(config);
		}
		this.webContext.register(BaseConfiguration.class);
		this.webContext.refresh();
	}

	private void loadWithReactive(Class<?> config) {
		this.reactiveWebContext = new GenericReactiveWebApplicationContext();
		EnvironmentTestUtils.addEnvironment(this.reactiveWebContext,
				"spring.mustache.prefix=classpath:/mustache-templates/");
		if (config != null) {
			this.reactiveWebContext.register(config);
		}
		this.reactiveWebContext.register(BaseConfiguration.class);
		this.reactiveWebContext.refresh();
	}

	@Configuration
	@Import({MustacheAutoConfiguration.class})
	protected static class BaseConfiguration {

	}

	@Configuration
	protected static class CustomCompilerConfiguration {

		@Bean
		public Mustache.Compiler compiler(Mustache.TemplateLoader mustacheTemplateLoader) {
			return Mustache.compiler().standardsMode(true).withLoader(mustacheTemplateLoader);
		}
	}

}
