/*
 * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */

package org.opendaylight.controller.config.persist.storage.directory.xml;

import java.io.File;
import java.util.Collections;
import java.util.List;
import java.util.SortedSet;
import org.junit.Test;
import org.opendaylight.controller.config.persist.api.ConfigSnapshotHolder;
import org.opendaylight.controller.config.persist.api.Persister;
import org.opendaylight.controller.config.persist.test.PropertiesProviderTest;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

public class DirectoryStorageAdapterTest {

    Persister tested;

    @Test
    public void testEmptyDirectory() throws Exception {
        File folder = new File("target/emptyFolder");
        folder.mkdir();
        tested = new XmlDirectoryPersister((folder));
        assertEquals(Collections.<ConfigSnapshotHolder>emptyList(), tested.loadLastConfigs());

        try {
            tested.persistConfig(new ConfigSnapshotHolder() {
                @Override
                public String getConfigSnapshot() {
                    throw new RuntimeException();
                }

                @Override
                public SortedSet<String> getCapabilities() {
                    throw new RuntimeException();
                }
            });
            fail();
        } catch (UnsupportedOperationException e) {

        }
    }

    private File getFolder(String folderName) {
        File result = new File(("src/test/resources/" +
                folderName).replace("/", File.separator));
        assertTrue(result + " is not a directory", result.isDirectory());
        return result;
    }

    @Test
    public void testOneFile() throws Exception {
        File folder = getFolder("oneFile");

        PropertiesProviderTest pp = new PropertiesProviderTest();
        pp.addProperty("directoryStorage",folder.getPath());
        XmlDirectoryStorageAdapter xmlDsa = new XmlDirectoryStorageAdapter();
        tested = xmlDsa.instantiate(pp);

        List<ConfigSnapshotHolder> results = tested.loadLastConfigs();
        assertEquals(1, results.size());
        ConfigSnapshotHolder result = results.get(0);
        assertResult(result, "<config>1</config>", "cap1&rev", "cap2", "capa a");
    }

    private void assertResult(ConfigSnapshotHolder result, String s, String... caps) {
        assertEquals(s, result.getConfigSnapshot().replaceAll("\\s", ""));
        int i = 0;
        for (String capFromSnapshot : result.getCapabilities()) {
            assertEquals(capFromSnapshot, caps[i++]);
        }
    }

    @Test
    public void testTwoFiles() throws Exception {
        File folder = getFolder("twoFiles");

        PropertiesProviderTest pp = new PropertiesProviderTest();
        pp.addProperty("directoryStorage",folder.getPath());
        XmlDirectoryStorageAdapter xmlDsa = new XmlDirectoryStorageAdapter();
        tested = xmlDsa.instantiate(pp);

        List<ConfigSnapshotHolder> results = tested.loadLastConfigs();
        assertEquals(2, results.size());

        assertResult(results.get(0), "<config>1</config>", "cap1-a", "cap2-a", "capa a-a");
        assertResult(results.get(1), "<config>2</config>", "cap1-b", "cap2-b", "capa a-b");

    }

}