/*
 * $Id$
 *
 * Copyright 1996-2008 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */
package com.sun.javatest.lib;

import java.io.File;
import com.sun.javatest.Script;
import com.sun.javatest.Status;
import com.sun.javatest.TestDescription;
import com.sun.javatest.TestEnvironment;
import com.sun.javatest.util.StringArray;

/**
 * A Script to compile/execute a standard test.
 */
public class StdTestScript extends Script
{
    public Status run(String[] args, TestDescription td, TestEnvironment env) {
	try {
	    String[] m = env.lookup("script.mode");
	    if (m != null && m.length == 1)
		setMode(m[0]);
	}
	catch (TestEnvironment.Fault e) {
	    return Status.failed("error determining script mode: " + e.getMessage());
	}

	boolean compile = false;
	boolean execute = false;
	boolean expectFail = false;

	for (int i = 0; i < args.length; i++) {
	    String arg = args[i];
	    
	    if (arg.equals("-certify")) {
		compile = false;
		execute = true;
	    }
	    else if (arg.equals("-precompile")) {
		compile = true;
		execute = false;
	    }
	    else if (arg.equals("-developer")) {
		compile = true;
		execute = true;
	    }
	    else if (arg.equals("-compile")) {
		compile = true;
	    }
	    else if (arg.equals("-execute")) {
		execute = true;
	    }
	    else if (arg.equals("-expectFail")) {
		expectFail = true;
	    }
	    else
		return Status.failed("bad arg for script: `" + arg + "'");
	}

	if (compile == false && execute == false) {
	    // not set in args, so set from mode
	    compile = (mode == DEVELOPER || mode == PRECOMPILE);
	    execute = (mode == DEVELOPER || mode == CERTIFY);
	}

	if (compile) {
	    String srcsParameter = td.getParameter("sources");
	    if (srcsParameter == null)
		// check "source" for backwards compatibility
		srcsParameter = td.getParameter("source");
	    String[] srcs = StringArray.split(srcsParameter);
	    File[] files = new File[srcs.length];
	    File tdDir  = td.getDir();
	    for (int i = 0; i < files.length; i++) 
		files[i] = new File(tdDir, srcs[i].replace('/', File.separatorChar));

	    Status compileStatus = compileTogether(files);

	    // if we're not going to execute the test, this is the end of the task
	    if (!execute)  {
		if (expectFail) {
		    // backwards compatibility for negative compiler tests,
		    // for which we expect the compilation to fail,
		    // so verify that it did, and return accordingly
		    if (compileStatus.getType() == Status.FAILED) 
			return pass_compFailExp.augment(compileStatus);
		    else
			return fail_compSuccUnexp.augment(compileStatus);
		} else
		    // normal exit for compile-only tests
		    return compileStatus;
	    } 

	    // if we want to execute the test, but the compilation failed, we can't go on
	    if (compileStatus.isFailed())
		return fail_compFailUnexp.augment(compileStatus);
	}

	if (execute) {
	    String executeClass = td.getParameter("executeClass");
	    if (executeClass == null)
		return error_noExecuteClass;

	    Status executeStatus = execute(executeClass, td.getParameter("executeArgs"));

	    if (expectFail) {
		// backwards compatibility for negative execution tests,
		// for which we expect the execution to fail,
		// so verify that it did, and return accordingly
		if (executeStatus.getType() == Status.FAILED) 
		    return pass_execFailExp.augment(executeStatus);
		else
		    return fail_execSuccUnexp.augment(executeStatus);
	    } else
		// normal exit for (compile and) execute tests
		return executeStatus;
	}

	return error_noActionSpecified;
    }

    /**
     * Get the execution mode for this script. The default mode is CERTIFY.
     * @return an integer signifying the execution mode for this script
     * @see #setMode
     * @see #UNKNOWN
     * @see #CERTIFY
     * @see #PRECOMPILE
     * @see #DEVELOPER
     */
    public int getMode() {
	return mode;
    }

    /**
     * Set the execution mode for this script. 
     * @param mode an integer signifying the execution mode for this script
     * @see #getMode
     * @see #UNKNOWN
     * @see #CERTIFY
     * @see #PRECOMPILE
     * @see #DEVELOPER
     */
    public void setMode(int mode) {
	switch (mode) {
	case CERTIFY:
	case PRECOMPILE:
	case DEVELOPER:
	    this.mode = mode;
	    break;

	default:
	    throw new IllegalArgumentException();
	}
    }

    private void setMode(String mode) {
	setMode(parseMode(mode));
    }
    
    private static int parseMode(String m) {
	if (m == null || m.equals("certify"))
	    return CERTIFY;
	else if (m.equals("precompile"))
	    return PRECOMPILE;
	else if (m.equals("developer"))
	    return DEVELOPER;
	else 
	    return UNKNOWN;
    }

    private static int getDefaultMode() {
	return parseMode(System.getProperty("javatest.stdTestScript.defaultMode"));
    }

    /**
     * An integer signifying that the execution mode is unknown.
     */
    public static final int UNKNOWN = 0;

    /**
     * An integer signifying that the execution mode is to perform
     * a certification run, executing precompiled classes.
     */
    public static final int CERTIFY = 1;

    /**
     * An integer signifying that the execution mode is to precompile
     * but not otherwise execute the tests.
     */
    public static final int PRECOMPILE = 2;

    /**
     * An integer signifying that the execution mode is to compile
     * and execute the tests.
     */
    public static final int DEVELOPER = 3;

    private int mode = getDefaultMode();
}