/*
 * $Id$
 *
 * Copyright (C) 2003-2015 JNode.org
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 *
 * This library 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 Lesser General Public 
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; If not, write to the Free Software Foundation, Inc., 
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
package org.jnode.shell.command.test;

import java.io.PrintWriter;
import java.util.Arrays;
import java.util.Set;

import junit.framework.Test;
import junit.framework.TestSuite;

import org.jnode.driver.console.CompletionInfo;
import org.jnode.shell.AbstractCommand;
import org.jnode.shell.syntax.Argument;
import org.jnode.shell.syntax.CommandSyntaxException;
import org.jnode.shell.syntax.FlagArgument;
import org.jnode.shell.syntax.StringArgument;
import org.jnode.test.framework.TestManager;

/**
 * This command runs JUnit tests registered with the JNode test framework.
 * 
 * @author Fabien DUMINY (fduminy@jnode.org)
 * @author crawley@jnode.org
 */
public class SuiteCommand extends AbstractCommand {
    private final FlagArgument FLAG_LIST = new FlagArgument(
            "list", Argument.OPTIONAL, "list the tests");

    private final FlagArgument FLAG_RUN = new FlagArgument(
            "run", Argument.OPTIONAL, "run the tests");

    private final CategoryArgument ARG_CATEGORY = new CategoryArgument(
            "category", Argument.OPTIONAL | Argument.MULTIPLE,
            "test categories to run or list");

    
    public SuiteCommand() {
        super("Run one or more JUnit testcase(s)");
        registerArguments(FLAG_LIST, FLAG_RUN, ARG_CATEGORY);
    }

    public static void main(String[] args) throws Exception {
        new SuiteCommand().execute(args);
    }

    /**
     * Execute this command
     */
    public void execute() {
        TestManager mgr = TestManager.getInstance();
        if (FLAG_LIST.isSet()) {
            PrintWriter out = getOutput().getPrintWriter();
            for (Class<? extends Test> test : mgr.getTests()) {
                out.print(test.getName() + " :");
                for (String category : mgr.getCategories(test)) {
                    out.print(" ");
                    out.print(category);
                }
                out.println();
            }
        } else if (FLAG_RUN.isSet()) {
            String[] categories = ARG_CATEGORY.getValues();
            if (categories == null) {
                categories = new String[0];
            }
            TestSuite suite = mgr.getTestSuite(Arrays.asList(categories));
            junit.textui.TestRunner.run(suite);
        }
    }

    /**
     * Validate and complete test categories against the categories known to
     * the TestManager.
     */
    private static class CategoryArgument extends StringArgument {

        public CategoryArgument(String label, int flags, String description) {
            super(label, flags, description);        
        }

        public void doComplete(CompletionInfo completions, String partial, int flags) {
            Set<String> availCategories = TestManager.getInstance().getCategories();
            for (String availCategory : availCategories) {
                if (availCategory.startsWith(partial)) {
                    completions.addCompletion(availCategory);
                }
            }
        }

        protected String doAccept(String category) throws CommandSyntaxException {
            Set<String> availCategories = TestManager.getInstance().getCategories();
            if (availCategories.contains(category)) {
                return category;
            } else {
                throw new CommandSyntaxException("not a recognized JUnit test category");
            }
        }    
    }
}