/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2014, Red Hat, Inc., and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This 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 software 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 software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.jboss.as.test.integration.management.cli;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import java.io.File;
import java.io.IOException;
import java.io.Writer;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;

import org.jboss.as.test.shared.TestSuiteEnvironment;
import org.junit.AfterClass;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.wildfly.core.testrunner.WildflyTestRunner;

/**
 *
 * @author Alexey Loubyansky
 */
@RunWith(WildflyTestRunner.class)
public class FileArgumentTestCase {

    private static final String PROP_NAME = "cli-arg-test";
    private static final String SET_PROP_COMMAND = "/system-property=" + PROP_NAME + ":add(value=set)";
    private static final String GET_PROP_COMMAND = "/system-property=" + PROP_NAME + ":read-resource";
    private static final String REMOVE_PROP_COMMAND = "/system-property=" + PROP_NAME + ":remove";

    private static final String FILE_NAME = "jboss-cli-file-arg-test.cli";
    private static final File TMP_FILE;
    static {
        TMP_FILE = new File(new File(TestSuiteEnvironment.getTmpDir()), FILE_NAME);
    }

    @AfterClass
    public static void cleanUp() {
        if(TMP_FILE.exists()) {
            TMP_FILE.delete();
        }
    }

    /**
     * Tests that the exit code is 0 value after a successful operation
     * @throws Exception
     */
    @Test
    public void testSuccess() {
        int exitCode = executeAsFile(new String[]{SET_PROP_COMMAND}, true);
        if(exitCode == 0) {
            executeAsFile(new String[]{REMOVE_PROP_COMMAND}, true);
        }
        assertEquals(0, exitCode);
    }

    /**
     * Tests that the exit code is not 0 after a failed operation.
     * @throws Exception
     */
    @Test
    public void testFailure() {
        assertFailure(GET_PROP_COMMAND);
    }

    /**
     * Tests that commands following a failed command aren't executed.
     * @throws Exception
     */
    @Test
    public void testValidCommandAfterInvalidCommand() {
        int exitCode = executeAsFile(new String[]{GET_PROP_COMMAND, SET_PROP_COMMAND}, false);
        if(exitCode == 0) {
            executeAsFile(new String[]{REMOVE_PROP_COMMAND}, true);
        } else {
            assertFailure(GET_PROP_COMMAND);
        }
        assertTrue(exitCode != 0);
    }

    /**
     * Tests that commands preceding a failed command are't affected by the failure.
     * @throws Exception
     */
    @Test
    public void testValidCommandBeforeInvalidCommand() {
        int exitCode = executeAsFile(new String[]{SET_PROP_COMMAND, "bad-wrong-illegal"}, true);
        assertSuccess(GET_PROP_COMMAND);
        executeAsFile(new String[]{REMOVE_PROP_COMMAND}, true);
        assertTrue(exitCode != 0);
    }

    protected void assertSuccess(String cmd) {
        assertEquals(0, executeAsFile(new String[]{cmd}, true));
    }

    protected void assertFailure(String cmd) {
        assertTrue(executeAsFile(new String[]{cmd}, false) != 0);
    }

    protected int executeAsFile(String[] cmd, boolean logFailure) {
        createFile(cmd);
        return execute(TMP_FILE, logFailure);
    }

    protected void createFile(String[] cmd) {
        if(TMP_FILE.exists()) {
            if(!TMP_FILE.delete()) {
                fail("Failed to delete " + TMP_FILE.getAbsolutePath());
            }
        }

        try (final Writer writer = Files.newBufferedWriter(TMP_FILE.toPath(),StandardCharsets.UTF_8)){
            for(String line : cmd) {
                writer.write(line);
                writer.write('\n');
            }
        } catch (IOException e) {
            fail("Failed to write to " + TMP_FILE.getAbsolutePath() + ": " + e.getLocalizedMessage());
        }
    }

    protected int execute(File f, boolean logFailure) {
        CliProcessWrapper cli = new CliProcessWrapper()
                .addCliArgument("--controller=" + TestSuiteEnvironment.getServerAddress() + ":"
                        + (TestSuiteEnvironment.getServerPort()))
                .addCliArgument("--connect")
                .addCliArgument("--file=" + f.getAbsolutePath());
        try {
            cli.executeNonInteractive();
        } catch (IOException ex) {
            if (logFailure) {
                System.out.println("Exception " + ex.getLocalizedMessage());
            }
            return 1;
        }
        int exitCode = cli.getProcessExitValue();
        if (logFailure && exitCode != 0) {
            System.out.println("Command's output: '" + cli.getOutput() + "'");
        }
        return exitCode;
    }
}
