package tudelft.healthpsychology.traumaontologies;

import static org.junit.Assert.assertTrue;

import java.io.IOException;
import java.io.InputStream;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameter;
import org.junit.runners.Parameterized.Parameters;

import tudelft.utilities.translator.BasicCsvTranslator;

/**
 * Check csv translation files
 * 
 * @author wouter
 *
 */
@RunWith(Parameterized.class)
public class CsvTranslationFilesTest {

	private final static String[] csvFiles = new String[] { "NL.csv",
			"EN.csv" };

	@Parameters
	public static Object[] data() {
		return csvFiles;
	}

	@Parameter
	public String csvFile;

	/**
	 * Test that all csv files have the same keys (the original language
	 * sentences)
	 * 
	 * @throws IOException
	 */
	@Test
	public void testSameKeys() throws IOException {
		System.out.println("testing file " + csvFile);

		MyTranslator tested = new MyTranslator(
				getClass().getResourceAsStream("/" + csvFile));

		MyTranslator baseline = new MyTranslator(
				getClass().getResourceAsStream("/" + csvFiles[0]));

		checkMissing(tested.getMap().keySet(), baseline.getMap().keySet(),
				"There are keys missing in " + csvFile);
		checkMissing(baseline.getMap().keySet(), tested.getMap().keySet(),
				"There are keys extra in " + csvFile);

	}

	/**
	 * Check if values are missing in testset that are in baselineset.
	 * 
	 * @param testset     the set to check
	 * @param baselineset the baseline of must-have values
	 * @param message     error message if there are values
	 */
	private void checkMissing(Set<String> testkeys, Set<String> baselinekeys,
			String message) {
		Set<String> remaining = new HashSet<String>(baselinekeys);
		remaining.removeAll(testkeys);
		assertTrue(message + ":" + remaining, remaining.isEmpty());
	}

}

/**
 * Extend to access map for direct testing of map contents.
 *
 */
class MyTranslator extends BasicCsvTranslator {
	public MyTranslator(InputStream csvResource) throws IOException {
		super(csvResource);
	}

	public Map<String, String> getMap() {
		return map;
	}
}