package plugindevelopment;

import java.io.File;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Vector;

import org.junit.Test;

import junit.framework.TestCase;
import mycompiler.MyCompiler;
import mycompiler.MyCompilerAPI;
import mycompiler.myparser.JavaParser.yyException;
import mycompiler.mytypereconstruction.TypeinferenceResultSet;
import typinferenz.typedeployment.TypeInsertPoint;
import typinferenz.typedeployment.TypeInsertSet;

public class InsertSingleTypeTest {
	private static final String testFile = "SingleTypeInsertTest.jav";
	
	@Test
	public void test1(){
		TypeinferenceResultSet res = test(testFile);
		TypeInsertPoint p = res.getTypeInsertionPoints().points.firstElement();
		try {
			System.out.println(res.getTypeInsertionPoints().insertType(p, this.getFileContent(rootDirectory + testFile)));
		} catch (IOException e) {
			TestCase.fail();
			e.printStackTrace();
		}
	}
	
	static final String rootDirectory = System.getProperty("user.dir")+"/test/plugindevelopment/";
	
	public static TypeinferenceResultSet test(String sourceFileToInfere){
		String inferedSource = "";
		MyCompilerAPI compiler = MyCompiler.getAPI();
		try {
			compiler.parse(new File(rootDirectory + sourceFileToInfere));
			Vector<TypeinferenceResultSet> results = compiler.typeReconstruction();
			TestCase.assertTrue("Es darf nicht mehr als eine Lösungsmöglichkeit geben und nicht "+results.size(), results.size()==1);
			return results.firstElement();
		} catch (IOException | yyException e) {
			e.printStackTrace();
			TestCase.fail();
			return null;
		}
	}
	
	//Source: https://stackoverflow.com/questions/326390/how-to-create-a-java-string-from-the-contents-of-a-file
	//PS: benötigt Java 7
	public static String getFileContent(String path)throws IOException 
	{
		byte[] encoded = Files.readAllBytes(Paths.get(path));
		return StandardCharsets.UTF_8.decode(ByteBuffer.wrap(encoded)).toString();
	}
}