package mc.server.di;

import com.typesafe.config.Config;
import lombok.SneakyThrows;
import org.junit.jupiter.api.Test;

import java.net.URL;
import java.nio.file.Path;
import java.nio.file.Paths;

import static org.junit.jupiter.api.Assertions.*;

class ConfigModuleTest {

	private static final String emptyConfig = "./config-empty.conf";

	/*
	Проверяем, что загруженный объект конфига является singleton
	 */
	@Test
	void singleton() {
		ConfigComponent component = DaggerConfigComponent.builder()
				.configModule(new ConfigModule(emptyConfig, pathResource("/config-1.conf"))).build();
		Config config1 = component.getConfig();
		Config config2 = component.getConfig();

		assertEquals(config1, config2);
		assertSame(config1, config2);
	}

	/*
	Корректная загрузка конфига
	 */
	@Test
	void loadConfig() {
		ConfigComponent component = DaggerConfigComponent.builder()
				.configModule(new ConfigModule(emptyConfig, pathResource("/config-1.conf"))).build();

		Config config = component.getConfig();
		assertEquals("value1", config.getString("key1"));
		assertEquals("value2", config.getString("key2.subkey1"));
		assertEquals("value3", config.getString("key3.subkey1"));
		assertEquals("value4", config.getString("\"key4.somename\""));
		assertEquals("value5", config.getString("key5"));
	}

	/*
	Проверка include
	 */
	@Test
	void includeTest() {
		ConfigComponent component = DaggerConfigComponent.builder()
				.configModule(new ConfigModule(emptyConfig, pathResource("/config-2.conf"))).build();

		Config config = component.getConfig();
		assertEquals("value1", config.getString("key1"));
		assertEquals("value2", config.getString("key2.subkey1"));
		assertEquals("value3", config.getString("key3.subkey1"));
		assertEquals("value4", config.getString("\"key4.somename\""));
		assertEquals("value5", config.getString("key5"));
	}

	/*
	Работа с многострочностью
	 */
	@Test
	void multilineTest() {
		ConfigComponent component = DaggerConfigComponent.builder()
				.configModule(new ConfigModule(emptyConfig, pathResource("/config-1.conf"))).build();

		Config config = component.getConfig();
		assertEquals("line1\nline2", config.getString("key6"));
	}

	/*
	Проверяем работу merge config
	 */
	@Test
	void mergeConfigTest() {
		ConfigComponent component = DaggerConfigComponent.builder()
				.configModule(new ConfigModule("./config-1.conf", pathResource("/config-3.conf"))).build();
		Config config = component.getConfig();

		assertEquals("value1_merged", config.getString("key1"));
		assertEquals("value2", config.getString("key2.subkey1"));
	}

	@SneakyThrows
	private static Path pathResource(String resource) {
		URL url = ConfigModuleTest.class.getResource(resource);
		assertNotNull(url);

		return Paths.get(url.toURI());
	}
}