/*
 * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
 * Copyright (C) $$Year-Rel$$ The Jalview Authors
 * 
 * This file is part of Jalview.
 * 
 * Jalview is free software: you can redistribute it and/or
 * modify it under the terms of the GNU General Public License 
 * as published by the Free Software Foundation, either version 3
 * of the License, or (at your option) any later version.
 *  
 * Jalview 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with Jalview.  If not, see <http://www.gnu.org/licenses/>.
 * The Jalview Authors are detailed in the 'AUTHORS' file.
 */
package jalview.bin;

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;

import org.testng.Assert;
import org.testng.FileAssert;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;

public class CommandLineOperations
{

  @BeforeClass
  public static void setUpBeforeClass() throws Exception
  {
  }

  @AfterClass
  public static void tearDownAfterClass() throws Exception
  {
  }

  /***
   * from
   * http://stackoverflow.com/questions/808276/how-to-add-a-timeout-value-when
   * -using-javas-runtime-exec
   * 
   * @author jimp
   * 
   */
  private static class Worker extends Thread
  {
    private final Process process;

    private Integer exit;

    private Worker(Process process)
    {
      this.process = process;
    }

    public void run()
    {
      try
      {
        exit = process.waitFor();
      } catch (InterruptedException ignore)
      {
        return;
      }
    }
  }

  private Worker jalviewDesktopRunner(boolean withAwt, String cmd,
          int timeout) throws InterruptedException, IOException
  {
    String _cmd = "java "
            + (withAwt ? "-Djava.awt.headless=true" : "")
            + " -Djava.ext.dirs=./lib -classpath ./classes jalview.bin.Jalview ";
    System.out.println("############ Testing Jalview CMD: " + _cmd + cmd);
    Process ls2_proc = Runtime.getRuntime().exec(_cmd + cmd);
    BufferedReader outputReader = new BufferedReader(new InputStreamReader(
            ls2_proc.getInputStream()));

    BufferedReader errorReader = new BufferedReader(new InputStreamReader(
            ls2_proc.getErrorStream()));
    Worker worker = new Worker(ls2_proc);
    worker.start();
    worker.join(timeout);
    // System.out.println("Output:  ");
    // String ln = null;
    // while ((ln = outputReader.readLine()) != null)
    // {
    // System.out.println(ln);
    // }
    //
    // System.out.println("Error:  ");
    // while ((ln = errorReader.readLine()) != null)
    // {
    // System.out.println(ln);
    // }
    return worker;
  }

  @BeforeTest
  public void initialize()
  {
    new CommandLineOperations();
  }

  @Test(dataProvider = "headlessModeOutputParams")
  public void testHeadlessModeOutputs(String harg, String type,
          String fileName, boolean withAWT, int expectedMinFileSize)
  {
    String cmd = harg + type + " " + fileName;
    // System.out.println(">>>>>>>>>>>>>>>> Command : " + cmd);
    File file = new File(fileName);
    Worker worker = null;
    try
    {
      worker = jalviewDesktopRunner(withAWT, cmd, 9000);
    } catch (InterruptedException e)
    {
      e.printStackTrace();
    } catch (IOException e)
    {
      e.printStackTrace();
    }

    FileAssert.assertFile(file, "Didn't create an output" + type
            + " file.[" + harg + "]");
    FileAssert.assertMinLength(new File(fileName), expectedMinFileSize);
    if (worker != null && worker.exit == null)
    {
      worker.interrupt();
      Thread.currentThread().interrupt();
      worker.process.destroy();
      Assert.fail("Jalview did not exit after  "
              + type
              + " generation (try running test again to verify - timeout at 9000ms). ["
              + harg + "]");
    }
    new File(fileName).delete();
  }

  @DataProvider(name = "headlessModeOutputParams")
  public static Object[][] headlessModeOutput()
  {
    return new Object[][]
    {
        { "nodisplay -open examples/uniref50.fa", " -eps",
            "test_uniref50_out.eps", true, 4096 },
        { "nodisplay -open examples/uniref50.fa", " -eps",
            "test_uniref50_out.eps", false, 4096 },
        { "headless -open examples/uniref50.fa", " -eps",
            "test_uniref50_out.eps", true, 4096 },
        { "headless -open examples/uniref50.fa", " -eps",
            "test_uniref50_out.eps", false, 4096 },
        { "nogui -open examples/uniref50.fa", " -eps",
            "test_uniref50_out.eps", true, 4096 },
        { "nogui -open examples/uniref50.fa", " -eps",
            "test_uniref50_out.eps", false, 4096 },
        { "headless -open examples/uniref50.fa", " -svg",
            "test_uniref50_out.svg", true, 4096 },
        { "headless -open examples/uniref50.fa", " -svg",
            "test_uniref50_out.svg", false, 4096 },
        { "headless -open examples/uniref50.fa", " -png",
            "test_uniref50_out.png", true, 4096 },
        { "headless -open examples/uniref50.fa", " -png",
            "test_uniref50_out.png", false, 4096 },
        { "headless -open examples/uniref50.fa", " -html",
            "test_uniref50_out.html", true, 4096 },
        { "headless -open examples/uniref50.fa", " -html",
            "test_uniref50_out.html", false, 4096 },
        { "headless -open examples/uniref50.fa", " -fasta",
            "test_uniref50_out.mfa", true, 2096 },
        { "headless -open examples/uniref50.fa", " -fasta",
            "test_uniref50_out.mfa", false, 2096 },
        { "headless -open examples/uniref50.fa", " -clustal",
            "test_uniref50_out.aln", true, 2096 },
        { "headless -open examples/uniref50.fa", " -clustal",
            "test_uniref50_out.aln", false, 2096 },
        { "headless -open examples/uniref50.fa", " -msf",
            "test_uniref50_out.msf", true, 2096 },
        { "headless -open examples/uniref50.fa", " -msf",
            "test_uniref50_out.msf", false, 2096 },
        { "headless -open examples/uniref50.fa", " -pileup",
            "test_uniref50_out.aln", true, 2096 },
        { "headless -open examples/uniref50.fa", " -pileup",
            "test_uniref50_out.aln", false, 2096 },
        { "headless -open examples/uniref50.fa", " -pir",
            "test_uniref50_out.pir", true, 2096 },
        { "headless -open examples/uniref50.fa", " -pir",
            "test_uniref50_out.pir", false, 2096 },
        { "headless -open examples/uniref50.fa", " -pfam",
            "test_uniref50_out.pfam", true, 2096 },
        { "headless -open examples/uniref50.fa", " -pfam",
            "test_uniref50_out.pfam", false, 2096 },
        { "headless -open examples/uniref50.fa", " -blc",
            "test_uniref50_out.blc", true, 2096 },
        { "headless -open examples/uniref50.fa", " -blc",
            "test_uniref50_out.blc", false, 2096 },
        { "headless -open examples/uniref50.fa", " -jalview",
            "test_uniref50_out.jvp", true, 2096 },
        { "headless -open examples/uniref50.fa", " -jalview",
            "test_uniref50_out.jvp", false, 2096 },
    };
  }


}