/**
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.winegrower;

import static java.util.stream.Collectors.toMap;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertTrue;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Writer;
import java.util.Map;

import org.apache.winegrower.deployer.BundleImpl;
import org.apache.winegrower.deployer.OSGiBundleLifecycle;
import org.apache.winegrower.service.BundleActivatorHandler;
import org.apache.winegrower.test.WithRipener;
import org.apache.winegrower.test.WithRipener.Entry;
import org.apache.winegrower.test.WithRipener.Service;
import org.apache.winegrower.test.simpleactivator.MyActivator;
import org.junit.jupiter.api.Test;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleActivator;

class RipenerTest {

    @Test
    @WithRipener
    void stopFrameworkBundle(@Service final Ripener ripener) {
        final BundleImpl bundle = ripener.getRegistry().getBundles().get(0L).getBundle();
        assertEquals(Bundle.ACTIVE, bundle.getState());
        ripener.stop();
        assertEquals(Bundle.UNINSTALLED, bundle.getState());
    }

    @Test
    @WithRipener
    void workDir(@Service final Ripener ripener) throws IOException {
        final File workDir = ripener.getConfiguration().getWorkDir();
        assertFalse(workDir.exists());
        final File file = ripener.getRegistry()
                                  .getBundles()
                                  .values()
                                  .iterator()
                                  .next()
                                  .getBundle()
                                  .getDataFile("tmp");
        try (final Writer writer = new FileWriter(file)) {
            writer.write("created");
        }
        assertTrue(file.getParentFile().exists());
        assertTrue(workDir.exists());
        ripener.stop();
        assertFalse(workDir.exists());
    }

    @Test
    @WithRipener
    void ensureFrameworkBundle(@Service final Ripener ripener) {
        assertEquals(2, ripener.getRegistry().getBundles().size());
    }

    @Test
    @WithRipener(includeResources = @Entry(path = "org.apache.winegrower.test.simpleactivator"))
    void simpleActivator(@Service final Ripener ripener) {
        assertEquals(3, ripener.getRegistry().getBundles().size());

        final BundleActivatorHandler activatorHandler = ripener.getRegistry().getBundles().values().stream()
                .filter(it -> it.getActivator() != null)
                .findFirst()
                .orElseThrow(IllegalStateException::new)
                .getActivator();
        assertNotNull(activatorHandler);
        final BundleActivator activator = activatorHandler.getActivator();
        assertNotNull(activator);
        assertTrue(MyActivator.class.isInstance(activator));
        final MyActivator myActivator = MyActivator.class.cast(activator);
        assertNotNull(myActivator.getContext());
        assertEquals(1, myActivator.getStarted());
        assertEquals(0, myActivator.getStopped());
        ripener.stop();
        assertEquals(1, myActivator.getStarted());
        assertEquals(1, myActivator.getStopped());
    }

    @Test
    @WithRipener(includeResources = @Entry(path = "org.apache.winegrower.test.simpleservice"))
    void simpleServiceRegistration(@Service final Ripener ripener) {
        assertEquals(1, ripener.getServices().getServices().size());
    }

    @Test
    @WithRipener(includeResources = { @Entry(path = "org.apache.winegrower.test.simpleservice", jarName = "service"),
            @Entry(path = "org.apache.winegrower.test.simpleconsumer", jarName = "consumer") })
    void simpleService(@Service final Ripener ripener) {
        validateTracker(ripener);
    }

    @Test
    @WithRipener(includeResources = { @Entry(path = "org.apache.winegrower.test.simpleservice", jarName = "1_service"),
            @Entry(path = "org.apache.winegrower.test.simpleconsumer", jarName = "2_consumer") })
    void simpleServiceReversedOrder(@Service final Ripener ripener) {
        validateTracker(ripener);
    }

    private void validateTracker(final Ripener ripener) {
        assertEquals(1, ripener.getServices().getServices().size());

        final Map<String, BundleActivatorHandler> activatorHandler = ripener.getRegistry().getBundles().values().stream()
                .filter(it -> it.getActivator() != null)
                .collect(toMap(it -> it.getBundle().getSymbolicName(), OSGiBundleLifecycle::getActivator));
        assertNotNull(activatorHandler);
        final BundleActivator activator = activatorHandler.get("consumer").getActivator();
        assertNotNull(activator);
        assertTrue(org.apache.winegrower.test.simpleconsumer.MyActivator.class.isInstance(activator));
        final org.apache.winegrower.test.simpleconsumer.MyActivator myActivator = org.apache.winegrower.test.simpleconsumer.MyActivator.class
                .cast(activator);
        assertTrue(myActivator.registered);
    }

}