/**
 * Copyright (C) 2025 Adrien Hopkins
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
package sevenUnitsGUI;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;

import java.util.stream.Stream;

import org.junit.jupiter.api.Test;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.Arguments;
import org.junit.jupiter.params.provider.MethodSource;

/**
 * Tests for the internationalization system.
 * 
 * @since v1.0.0
 */
class I18nTest {
	private static final Stream<Arguments> testLocalization() {
		return Stream.of(
				Arguments.of("tv.title", "en", "7Units [v]"),
				Arguments.of("tv.title", "fr", "7Unités [v]"),
				Arguments.of("tv.convert_units.title", "en", "Convert Units"),
				Arguments.of("tv.convert_units.title", "fr", "Convertir Unités"));
	}
	
	private static final Stream<String> testLocaleSupported() {
		return Stream.of("en", "fr");
	}

	/**
	 * Tests that the default locale is supported.
	 * 
	 * @since v1.0.0
	 * @see Presenter#DEFAULT_LOCALE
	 */
	@Test
	void testDefaultLocaleSupported() {
		Presenter p = new Presenter(new ViewBot());
		assertNotNull(p.locales.get(Presenter.DEFAULT_LOCALE),
				"Default locale is not supported.");
	}
	
	/**
	 * Ensures that the system supports the provided locale.
	 * 
	 * @param localeName locale to test for support
	 * 
	 * @since 2025-06-04
	 * @since v1.0.0
	 */
	@ParameterizedTest
	@MethodSource
	void testLocaleSupported(String localeName) {
		Presenter p = new Presenter(new ViewBot());
		assertNotNull(p.locales.get(localeName),
				"Locale \"" + localeName + "\" is not supported.");
	}

	/**
	 * Tests that the system can correctly localize text,
	 * using the default locales.
	 * 
	 * @param key      key of text to localize
	 * @param locale   locale to use
	 * @param expected expected value of output text
	 * 
	 * @since 2025-06-04
	 * @since v1.0.0
	 */
	@ParameterizedTest
	@MethodSource
	void testLocalization(String key, String locale, String expected) {
		Presenter p = new Presenter(new ViewBot());
		p.setUserLocale(locale);
		String actual = p.getLocalizedText(key);
		assertEquals(expected, actual);
	}

}