/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * See LICENSE.txt included in this distribution for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at LICENSE.txt.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
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 *
 * CDDL HEADER END
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/*
 * Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
 */
package org.opensolaris.opengrok.configuration;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;

import java.io.File;
import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.util.ArrayList;
import java.util.List;

import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.opensolaris.opengrok.analysis.JFlexXrefTest;
import org.opensolaris.opengrok.analysis.XrefWriter;
import org.opensolaris.opengrok.analysis.plain.PlainXref;
import org.opensolaris.opengrok.history.RepositoryInfo;
import org.opensolaris.opengrok.web.Prefix;

/**
 * Test the RuntimeEnvironment class
 * 
 * @author Trond Norbye
 */
public class RuntimeEnvironmentTest {
    private static File orgiginalConfig;

    @SuppressWarnings("javadoc")
    @BeforeClass
    public static void setUpClass() throws Exception {
        // preserve the original
        orgiginalConfig = File.createTempFile("config", ".xml");
        RuntimeEnvironment.writeConfig(orgiginalConfig);

        // Create a default configuration
        Configuration config = new Configuration();
        RuntimeEnvironment.setConfig(config);
    }

    @SuppressWarnings("javadoc")
    @AfterClass
    public static void tearDownClass() throws Exception {
        // restore the configuration
        RuntimeEnvironment.readConfig(orgiginalConfig);
        RuntimeEnvironment.register();
        orgiginalConfig.delete();
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testDataRoot() throws IOException {
        Configuration cfg = RuntimeEnvironment.getConfig();
        assertNull(cfg.getDataRootFile());
        assertNull(cfg.getDataRoot());
        File f = File.createTempFile("dataroot", null);
        String path = f.getCanonicalPath();
        assertTrue(f.delete());
        assertFalse(f.exists());
        cfg.setDataRoot(path);
        // setDataRoot() used to create path if it didn't exist, but that
        // logic has been moved. Verify that it is so.
        assertFalse(f.exists());
        assertTrue(f.mkdirs());
        assertEquals(path, cfg.getDataRoot());
        assertEquals(path, cfg.getDataRootFile().getCanonicalPath());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testSourceRoot() throws IOException, InterruptedException {
        final File f = File.createTempFile("sourceroot", null);
        final String path = f.getCanonicalPath();
        Runnable runnable = new Runnable() {
            @Override
            public void run() {
                Configuration cfg = RuntimeEnvironment.getConfig();
                assertNull("" + cfg.getSourceRootFile(), cfg.getSourceRootFile());
                assertNull(cfg.getSourceRoot(), cfg.getSourceRoot());
                assertTrue(f.delete());
                cfg.setSourceRoot(path);
                assertEquals(path, cfg.getSourceRoot());
                try {
                    assertEquals(path, cfg.getSourceRootFile().getCanonicalPath());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
        };
        Thread thread = new Thread(runnable);
        thread.start();
        thread.join(1000);
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testProjects() throws InterruptedException {
        // actually all tests should use this pattern to make sure to really 
        // have a virgin RE
        Runnable runnable = new Runnable() {
            @Override
            public void run() {
                Configuration cfg = RuntimeEnvironment.getConfig();
                assertFalse(cfg.hasProjects());
                assertNotNull(cfg.getProjects());
                assertEquals(0, cfg.getProjects().size());
                assertNull(cfg.getDefaultProject());
        
                File file = new File("/opengrok_automatic_test/foo/bar");
                cfg.setSourceRoot("/opengrok_automatic_test/foo");
                Project p = new Project();
                p.setPath("/bar");
                assertEquals("/bar", p.getId());
                cfg.getProjects().add(p);
                assertEquals(p, Project.getProject(file));
                cfg.setProjects(null);
                assertNull(cfg.getProjects());
            }
        };
        Thread thread = new Thread(runnable);
        thread.start();
        thread.join(1000);
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testRegister() throws InterruptedException, IOException {
        Configuration cfg = RuntimeEnvironment.getConfig();
        String path = "/tmp/dataroot";
        cfg.setDataRoot(path);
        RuntimeEnvironment.register();
        Thread t = new Thread(new Runnable() {
            @Override
            public void run() {
                Configuration c = new Configuration();
                RuntimeEnvironment.setConfig(c);
                
            }
        });
        t.start();
        t.join(1000);
        assertEquals(new File(path).getCanonicalPath(), cfg.getDataRoot());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testUrlPrefix() {
        Configuration cfg = RuntimeEnvironment.getConfig();
        assertEquals("/source" + Prefix.SEARCH_R + '?', cfg.getUrlPrefix());
        String prefix = "/opengrok" + Prefix.SEARCH_R + '?';
        cfg.setUrlPrefix(prefix);
        assertEquals(prefix, cfg.getUrlPrefix());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testCtags() {
        Configuration cfg = RuntimeEnvironment.getConfig();
        assertEquals("ctags", cfg.getCtags());
        String path = "/usr/bin/ctags";
        cfg.setCtags(path);
        assertEquals(path, cfg.getCtags());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testHistoryReaderTimeLimit() {
        Configuration cfg = RuntimeEnvironment.getConfig();
        assertEquals(30, cfg.getHistoryCacheTime());
        cfg.setHistoryCacheTime(50);
        assertEquals(50, cfg.getHistoryCacheTime());
    }

    @SuppressWarnings({ "javadoc", "static-method" })
    @Test
    public void testUseHistoryCache() {
        Configuration cfg = RuntimeEnvironment.getConfig();
        assertTrue(cfg.isHistoryCache());
        cfg.setHistoryCache(false);
        assertFalse(cfg.isHistoryCache());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testStoreHistoryCacheInDB() {
        Configuration cfg = RuntimeEnvironment.getConfig();
        assertFalse(cfg.isHistoryCacheInDB());
        cfg.setHistoryCacheInDB(true);
        assertTrue(cfg.isHistoryCacheInDB());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testGenerateHtml() {
        Configuration cfg = RuntimeEnvironment.getConfig();
        assertTrue(cfg.isGenerateHtml());
        cfg.setGenerateHtml(false);
        assertFalse(cfg.isGenerateHtml());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testCompressXref() {
        Configuration cfg = RuntimeEnvironment.getConfig();
        assertTrue(cfg.isCompressXref());
        cfg.setCompressXref(false);
        assertFalse(cfg.isCompressXref());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testQuickContextScan() {
        Configuration cfg = RuntimeEnvironment.getConfig();
        assertTrue(cfg.isQuickContextScan());
        cfg.setQuickContextScan(false);
        assertFalse(cfg.isQuickContextScan());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testRepositories() {
        Configuration cfg = RuntimeEnvironment.getConfig();
        assertNotNull(cfg.getRepositories());
        cfg.setRepositories(null);
        assertNull(cfg.getRepositories());
        List<RepositoryInfo> reps = new ArrayList<RepositoryInfo>();
        cfg.setRepositories(reps);
        assertSame(reps, cfg.getRepositories());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testIndexWordLimit() {
        Configuration cfg = RuntimeEnvironment.getConfig();
        //default is unlimited
        assertEquals(Integer.MAX_VALUE, cfg.getIndexWordLimit());
        cfg.setIndexWordLimit(100000);
        assertEquals(100000, cfg.getIndexWordLimit());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testVerbose() {
        Configuration cfg = RuntimeEnvironment.getConfig();
        assertFalse(cfg.isVerbose());
        cfg.setVerbose(true);
        assertTrue(cfg.isVerbose());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testAllowLeadingWildcard() {
        Configuration cfg = RuntimeEnvironment.getConfig();
        assertFalse(cfg.isAllowLeadingWildcard());
        cfg.setAllowLeadingWildcard(true);
        assertTrue(cfg.isAllowLeadingWildcard());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testIgnoredNames() {
        Configuration cfg = RuntimeEnvironment.getConfig();
        assertNotNull(cfg.getIgnoredNames());
        cfg.setIgnoredNames(null);
        assertNotNull(cfg.getIgnoredNames());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testUserPage() {
        Configuration cfg = RuntimeEnvironment.getConfig();
        String page = "http://www.opensolaris.org/viewProfile.jspa?username=";
        assertEquals(page, cfg.getUserPage());
        cfg.setUserPage(page.substring(5));
        assertEquals(page.substring(5), cfg.getUserPage());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testBugPage() {
        Configuration cfg = RuntimeEnvironment.getConfig();
        String page = "http://bugs.opensolaris.org/bugdatabase/view_bug.do?bug_id=";
        assertEquals(page, cfg.getBugPage());
        cfg.setBugPage(page.substring(5));
        assertEquals(page.substring(5), cfg.getBugPage());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testBugPattern() {
        Configuration cfg = RuntimeEnvironment.getConfig();
        String page = "\\b([12456789][0-9]{6})\\b";
        assertEquals(page, cfg.getBugPattern());
        cfg.setBugPattern(page.substring(5));
        assertEquals(page.substring(5), cfg.getBugPattern());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testReviewPage() {
        Configuration cfg = RuntimeEnvironment.getConfig();
        String page = "http://arc.opensolaris.org/caselog/PSARC/";
        assertEquals(page, cfg.getReviewPage());
        cfg.setReviewPage(page.substring(5));
        assertEquals(page.substring(5), cfg.getReviewPage());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testReviewPattern() {
        Configuration cfg = RuntimeEnvironment.getConfig();
        String page = "\\b(\\d{4}/\\d{3})\\b";
        assertEquals(page, cfg.getReviewPattern());
        cfg.setReviewPattern(page.substring(5));
        assertEquals(page.substring(5), cfg.getReviewPattern());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testWebappLAF() {
        Configuration cfg = RuntimeEnvironment.getConfig();
        assertEquals(Configuration.DEFAULT_STYLE, cfg.getWebappLAF());
        cfg.setWebappLAF("foo");
        assertEquals("foo", cfg.getWebappLAF());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testRemoteScmSupported() {
        Configuration cfg = RuntimeEnvironment.getConfig();
        assertFalse(cfg.isRemoteScmSupported());
        cfg.setRemoteScmSupported(true);
        assertTrue(cfg.isRemoteScmSupported());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testOptimizeDatabase() {
        Configuration cfg = RuntimeEnvironment.getConfig();
        assertTrue(cfg.isOptimizeDatabase());
        cfg.setOptimizeDatabase(false);
        assertFalse(cfg.isOptimizeDatabase());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testUsingLuceneLocking() {
        Configuration cfg = RuntimeEnvironment.getConfig();
        assertFalse(cfg.isUsingLuceneLocking());
        cfg.setUsingLuceneLocking(true);
        assertTrue(cfg.isUsingLuceneLocking());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testIndexVersionedFilesOnly() {
        Configuration cfg = RuntimeEnvironment.getConfig();
        assertFalse(cfg.isIndexVersionedFilesOnly());
        cfg.setIndexVersionedFilesOnly(true);
        assertTrue(cfg.isIndexVersionedFilesOnly());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testConfigListenerThread() throws IOException {
        SocketAddress addr = new InetSocketAddress(0);
        assertTrue(RuntimeEnvironment.startConfigListenerThread(addr));
        try {
            Thread.sleep(1000);
        } catch (InterruptedException exp) {
            // do nothing
        }
        RuntimeEnvironment.getInstance().writeConfig();
        RuntimeEnvironment.stopConfigListenerThread();
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test(expected=ArrayIndexOutOfBoundsException.class)
    public void testXMLencdec() throws IOException {
        Configuration c = new Configuration();
        String m = c.getXMLRepresentationAsString();
        Configuration o = Configuration.makeXMLStringAsConfiguration(m);
        assertNotNull(o);
        m = m.replace('a', 'm');
        o = Configuration.makeXMLStringAsConfiguration(m);
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testBug3095() throws IOException {
        Configuration cfg = RuntimeEnvironment.getConfig();
        File file = new File("foobar");
        assertTrue(file.createNewFile());
        assertFalse(file.isAbsolute());
        cfg.setDataRoot(file.getName());
        File f = cfg.getDataRootFile();
        assertNotNull(f);
        assertEquals("foobar", f.getName());
        assertTrue(f.isAbsolute());
        assertTrue(file.delete());
    }
    
    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void testBug3154() throws IOException {
        Configuration cfg = RuntimeEnvironment.getConfig();
        File file = File.createTempFile("dataroot", null);
        assertTrue(file.delete());
        assertFalse(file.exists());
        cfg.setDataRoot(file.getAbsolutePath());
        // The point of this test was to verify that setDataRoot() created
        // the directory, but that logic has been moved as of bug 16986, so
        // expect that the file does not exist.
        assertFalse(file.exists());
    }

    @SuppressWarnings({ "javadoc", "static-method" })
    @Test
    public void testObfuscateEMail() throws IOException {
        Configuration cfg = RuntimeEnvironment.getConfig();
        // By default, don't obfuscate.
        assertObfuscated(Boolean.FALSE, cfg);

        cfg.setObfuscatingEMailAddresses(true);
        assertObfuscated(Boolean.TRUE, cfg);

        cfg.setObfuscatingEMailAddresses(false);
        assertObfuscated(Boolean.FALSE, cfg);
    }

    @SuppressWarnings("boxing")
    private static void assertObfuscated(Boolean expected, Configuration cfg)
        throws IOException 
    {
        assertEquals(expected, cfg.isObfuscatingEMailAddresses());

        String address = "opengrok-discuss@opensolaris.org";

        PlainXref xref = new PlainXref(new StringReader(address));
        StringWriter out = new StringWriter();
        XrefWriter w = new XrefWriter(out);
        xref.write(w);
        w.close();
        String expectedAddress = expected.booleanValue() 
            ? address.replace("@", " (at) ")
            : address;

        String expectedOutput = JFlexXrefTest.FIRST_LINE_PREAMBLE
            + expectedAddress + JFlexXrefTest.LINE_SUFFIX + JFlexXrefTest.EOS;

        assertEquals(expectedOutput, out.toString());
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void isChattyStatusPage() {
        Configuration cfg = RuntimeEnvironment.getConfig();

        // By default, status page should not be chatty.
        assertFalse(cfg.isChattyStatusPage());

        cfg.setChattyStatusPage(true);
        assertTrue(cfg.isChattyStatusPage());

        cfg.setChattyStatusPage(false);
        assertFalse(cfg.isChattyStatusPage());
    }
}