/*
 * Copyright 2012-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.boot.context.config;

import java.util.List;

import org.junit.jupiter.api.Test;

import org.springframework.boot.context.properties.bind.Bindable;
import org.springframework.boot.context.properties.bind.Binder;
import org.springframework.boot.context.properties.source.MapConfigurationPropertySource;

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

/**
 * Tests for {@link ConfigDataLocationBindHandler}.
 *
 * @author Phillip Webb
 * @author Scott Frederick
 */
class ConfigDataLocationBindHandlerTests {

	private static final Bindable<ConfigDataLocation[]> ARRAY = Bindable.of(ConfigDataLocation[].class);

	private static final Bindable<ValueObject> VALUE_OBJECT = Bindable.of(ValueObject.class);

	private final ConfigDataLocationBindHandler handler = new ConfigDataLocationBindHandler();

	@Test
	void bindToArrayFromCommaStringPropertySetsOrigin() {
		MapConfigurationPropertySource source = new MapConfigurationPropertySource();
		source.put("locations", "a,b,c");
		Binder binder = new Binder(source);
		ConfigDataLocation[] bound = binder.bind("locations", ARRAY, this.handler).get();
		String expectedLocation = "\"locations\" from property source \"source\"";
		assertThat(bound[0]).hasToString("a");
		assertThat(bound[0].getOrigin()).hasToString(expectedLocation);
		assertThat(bound[1]).hasToString("b");
		assertThat(bound[1].getOrigin()).hasToString(expectedLocation);
		assertThat(bound[2]).hasToString("c");
		assertThat(bound[2].getOrigin()).hasToString(expectedLocation);
	}

	@Test
	void bindToArrayFromCommaStringPropertyDoesNotFailOnEmptyElements() {
		MapConfigurationPropertySource source = new MapConfigurationPropertySource();
		source.put("locations", ",a,,b,c,");
		Binder binder = new Binder(source);
		ConfigDataLocation[] bound = binder.bind("locations", ARRAY, this.handler).get();
		String expectedLocation = "\"locations\" from property source \"source\"";
		assertThat(bound[0]).hasToString("");
		assertThat(bound[0].getOrigin()).hasToString(expectedLocation);
		assertThat(bound[1]).hasToString("a");
		assertThat(bound[1].getOrigin()).hasToString(expectedLocation);
		assertThat(bound[2]).hasToString("");
		assertThat(bound[2].getOrigin()).hasToString(expectedLocation);
		assertThat(bound[3]).hasToString("b");
		assertThat(bound[3].getOrigin()).hasToString(expectedLocation);
		assertThat(bound[4]).hasToString("c");
		assertThat(bound[4].getOrigin()).hasToString(expectedLocation);
		assertThat(bound[5]).hasToString("");
		assertThat(bound[5].getOrigin()).hasToString(expectedLocation);
	}

	@Test
	void bindToArrayFromIndexedPropertiesSetsOrigin() {
		MapConfigurationPropertySource source = new MapConfigurationPropertySource();
		source.put("locations[0]", "a");
		source.put("locations[1]", "b");
		source.put("locations[2]", "c");
		Binder binder = new Binder(source);
		ConfigDataLocation[] bound = binder.bind("locations", ARRAY, this.handler).get();
		assertThat(bound[0]).hasToString("a");
		assertThat(bound[0].getOrigin()).hasToString("\"locations[0]\" from property source \"source\"");
		assertThat(bound[1]).hasToString("b");
		assertThat(bound[1].getOrigin()).hasToString("\"locations[1]\" from property source \"source\"");
		assertThat(bound[2]).hasToString("c");
		assertThat(bound[2].getOrigin()).hasToString("\"locations[2]\" from property source \"source\"");
	}

	@Test
	void bindToValueObjectFromCommaStringPropertySetsOrigin() {
		MapConfigurationPropertySource source = new MapConfigurationPropertySource();
		source.put("test.locations", "a,b,c");
		Binder binder = new Binder(source);
		ValueObject bound = binder.bind("test", VALUE_OBJECT, this.handler).get();
		String expectedLocation = "\"test.locations\" from property source \"source\"";
		assertThat(bound.getLocation(0)).hasToString("a");
		assertThat(bound.getLocation(0).getOrigin()).hasToString(expectedLocation);
		assertThat(bound.getLocation(1)).hasToString("b");
		assertThat(bound.getLocation(1).getOrigin()).hasToString(expectedLocation);
		assertThat(bound.getLocation(2)).hasToString("c");
		assertThat(bound.getLocation(2).getOrigin()).hasToString(expectedLocation);
	}

	@Test
	void bindToValueObjectFromCommaStringPropertyDoesNotFailOnEmptyElements() {
		MapConfigurationPropertySource source = new MapConfigurationPropertySource();
		source.put("test.locations", ",a,b,,c,");
		Binder binder = new Binder(source);
		ValueObject bound = binder.bind("test", VALUE_OBJECT, this.handler).get();
		String expectedLocation = "\"test.locations\" from property source \"source\"";
		assertThat(bound.getLocation(0)).hasToString("");
		assertThat(bound.getLocation(0).getOrigin()).hasToString(expectedLocation);
		assertThat(bound.getLocation(1)).hasToString("a");
		assertThat(bound.getLocation(1).getOrigin()).hasToString(expectedLocation);
		assertThat(bound.getLocation(2)).hasToString("b");
		assertThat(bound.getLocation(2).getOrigin()).hasToString(expectedLocation);
		assertThat(bound.getLocation(3)).hasToString("");
		assertThat(bound.getLocation(3).getOrigin()).hasToString(expectedLocation);
		assertThat(bound.getLocation(4)).hasToString("c");
		assertThat(bound.getLocation(4).getOrigin()).hasToString(expectedLocation);
		assertThat(bound.getLocation(5)).hasToString("");
		assertThat(bound.getLocation(5).getOrigin()).hasToString(expectedLocation);
	}

	@Test
	void bindToValueObjectFromIndexedPropertiesSetsOrigin() {
		MapConfigurationPropertySource source = new MapConfigurationPropertySource();
		source.put("test.locations[0]", "a");
		source.put("test.locations[1]", "b");
		source.put("test.locations[2]", "c");
		Binder binder = new Binder(source);
		ValueObject bound = binder.bind("test", VALUE_OBJECT, this.handler).get();
		assertThat(bound.getLocation(0)).hasToString("a");
		assertThat(bound.getLocation(0).getOrigin())
			.hasToString("\"test.locations[0]\" from property source \"source\"");
		assertThat(bound.getLocation(1)).hasToString("b");
		assertThat(bound.getLocation(1).getOrigin())
			.hasToString("\"test.locations[1]\" from property source \"source\"");
		assertThat(bound.getLocation(2)).hasToString("c");
		assertThat(bound.getLocation(2).getOrigin())
			.hasToString("\"test.locations[2]\" from property source \"source\"");
	}

	static class ValueObject {

		private final List<ConfigDataLocation> locations;

		ValueObject(List<ConfigDataLocation> locations) {
			this.locations = locations;
		}

		ConfigDataLocation getLocation(int index) {
			return this.locations.get(index);
		}

	}

}
