package sbst.runtool;

import java.io.File;
import java.util.List;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.BufferedReader;
import java.io.InputStream;

public class Randoop implements ITestingTool{

    List<File> classPath;
    static final String randoopJar = System.getProperty("sbst.benchmark.randoop");

	public List<File> getExtraClassPath(){
        return null;
    }

	public void initialize(File src, File bin, List<File> classPath){
        this.classPath = classPath;
    }

	public void run(String cName){
        try{
            StringBuilder sb = new StringBuilder();
            for(int i = 0; i < classPath.size(); i++){
                if(i > 0)
                    sb.append(":");
                sb.append(classPath.get(i));
            }
            randoop(sb.toString(), cName);
        }catch(IOException ioe){
            ioe.printStackTrace();
            throw new RuntimeException("Failed to run Randoop");
        }
    }


	private boolean randoop(String cp, String cut) throws IOException {
        final String javaCmd = "java";
		ProcessBuilder pbuilder = new ProcessBuilder(javaCmd, "-Xmx512m", "-classpath", randoopJar + ":" + cp,
                                                      "randoop.main.Main", "gentests", "--testclass=" + cut,
                                                      /*"--timelimit=120", "--outputlimit=100", "--output-tests=all",*/ "--junit-output-dir=./temp/testcases/");

		pbuilder.redirectErrorStream(true);
		Process process = null;
		InputStreamReader stdout = null;
		InputStream stderr = null;
		OutputStreamWriter stdin = null;
		boolean mutationExitStatus = false;
		
		process = pbuilder.start();
	    stderr = process.getErrorStream();
	    stdout = new InputStreamReader(process.getInputStream());
	    stdin = new OutputStreamWriter(process.getOutputStream());
	    
        BufferedReader reader = new BufferedReader(stdout);
        String line = null;
        while((line = reader.readLine()) != null) {
            //System.out.println(line);
        }
        reader.close();
	    
		try {
            process.waitFor();
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
		
		int exitStatus = process.exitValue();
		
		//System.out.println("exit status = " + exitStatus);
		
		mutationExitStatus = exitStatus == 0;
		
		if(stdout !=null) stdout.close();
		if(stdin !=null) stdin.close();
		if(stderr !=null) stderr.close();
		if(process !=null) process.destroy();

        new File("./temp/testcases/RandoopTest.java").delete();
		return mutationExitStatus;
	}
}