/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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.sling.models.impl;

import static org.junit.Assert.*;
import static org.mockito.Mockito.*;

import java.util.Collections;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Map;

import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.api.resource.ValueMap;
import org.apache.sling.api.scripting.SlingBindings;
import org.apache.sling.api.scripting.SlingScriptHelper;
import org.apache.sling.api.wrappers.ValueMapDecorator;
import org.apache.sling.models.impl.injectors.BindingsInjector;
import org.apache.sling.models.impl.injectors.ChildResourceInjector;
import org.apache.sling.models.impl.injectors.OSGiServiceInjector;
import org.apache.sling.models.impl.injectors.RequestAttributeInjector;
import org.apache.sling.models.impl.injectors.ValueMapInjector;
import org.apache.sling.models.impl.via.BeanPropertyViaProvider;
import org.apache.sling.models.testmodels.classes.InjectorSpecificAnnotationModel;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.Mockito;
import org.mockito.runners.MockitoJUnitRunner;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Constants;
import org.osgi.framework.InvalidSyntaxException;
import org.osgi.framework.ServiceReference;
import org.osgi.service.component.ComponentContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

@RunWith(MockitoJUnitRunner.class)
public class InjectorSpecificAnnotationTest {

    @Mock
    private ComponentContext componentCtx;

    @Mock
    private BundleContext bundleContext;

    @Mock
    private SlingHttpServletRequest request;

    @Mock
    private Logger log;

    private ModelAdapterFactory factory;

    private OSGiServiceInjector osgiInjector;

    @Before
    public void setup() {
        when(componentCtx.getBundleContext()).thenReturn(bundleContext);
        when(componentCtx.getProperties()).thenReturn(new Hashtable<String, Object>());

        factory = new ModelAdapterFactory();
        factory.activate(componentCtx);

        osgiInjector = new OSGiServiceInjector();
        osgiInjector.activate(componentCtx);

        BindingsInjector bindingsInjector = new BindingsInjector();
        ValueMapInjector valueMapInjector = new ValueMapInjector();
        ChildResourceInjector childResourceInjector = new ChildResourceInjector();
        RequestAttributeInjector requestAttributeInjector = new RequestAttributeInjector();

        factory.bindInjector(bindingsInjector,
                Collections.<String, Object> singletonMap(Constants.SERVICE_ID, 1L));
        factory.bindInjector(valueMapInjector,
                Collections.<String, Object> singletonMap(Constants.SERVICE_ID, 2L));
        factory.bindInjector(childResourceInjector,
                Collections.<String, Object> singletonMap(Constants.SERVICE_ID, 3L));
        factory.bindInjector(requestAttributeInjector,
                Collections.<String, Object> singletonMap(Constants.SERVICE_ID, 4L));
        factory.bindInjector(osgiInjector, Collections.<String, Object> singletonMap(Constants.SERVICE_ID, 5L));

        factory.bindStaticInjectAnnotationProcessorFactory(bindingsInjector,
                Collections.<String, Object> singletonMap(Constants.SERVICE_ID, 1L));
        factory.bindInjectAnnotationProcessorFactory(valueMapInjector,
                Collections.<String, Object> singletonMap(Constants.SERVICE_ID, 2L));
        factory.bindInjectAnnotationProcessorFactory2(childResourceInjector,
                Collections.<String, Object> singletonMap(Constants.SERVICE_ID, 3L));
        factory.bindStaticInjectAnnotationProcessorFactory(requestAttributeInjector,
                Collections.<String, Object> singletonMap(Constants.SERVICE_ID, 4L));
        factory.bindStaticInjectAnnotationProcessorFactory(osgiInjector,
                Collections.<String, Object> singletonMap(Constants.SERVICE_ID, 5L));
        factory.bindViaProvider(new BeanPropertyViaProvider(), null);

        SlingBindings bindings = new SlingBindings();
        bindings.setLog(log);
        Mockito.when(request.getAttribute(SlingBindings.class.getName())).thenReturn(bindings);

        factory.adapterImplementations.addClassesAsAdapterAndImplementation(InjectorSpecificAnnotationModel.class, org.apache.sling.models.testmodels.classes.constructorinjection.InjectorSpecificAnnotationModel.class);
    }

    @Test
    public void testSimpleValueModelField() {
        Map<String, Object> map = new HashMap<String, Object>();
        map.put("first", "first-value");
        map.put("second", "second-value");
        ValueMap vm = new ValueMapDecorator(map);

        Resource res = mock(Resource.class);
        when(res.adaptTo(ValueMap.class)).thenReturn(vm);
        when(request.getResource()).thenReturn(res);

        InjectorSpecificAnnotationModel model = factory.getAdapter(request, InjectorSpecificAnnotationModel.class);
        assertNotNull("Could not instanciate model", model);
        assertEquals("first-value", model.getFirst());
        assertEquals("second-value", model.getSecond());
    }

    @Test
    public void testOrderForValueAnnotationField() {
        // make sure that that the correct injection is used
        // make sure that log is adapted from value map
        // and not coming from request attribute
        Logger logFromValueMap = LoggerFactory.getLogger(this.getClass());

        Map<String, Object> map = new HashMap<String, Object>();
        map.put("first", "first-value");
        map.put("log", logFromValueMap);
        ValueMap vm = new ValueMapDecorator(map);

        Resource res = mock(Resource.class);
        when(res.adaptTo(ValueMap.class)).thenReturn(vm);
        when(request.getResource()).thenReturn(res);

        InjectorSpecificAnnotationModel model = factory.getAdapter(request, InjectorSpecificAnnotationModel.class);
        assertNotNull("Could not instanciate model", model);
        assertEquals("first-value", model.getFirst());
        assertEquals(logFromValueMap, model.getLog());
    }

    @Test
    public void testOSGiServiceField() throws InvalidSyntaxException {
        ServiceReference ref = mock(ServiceReference.class);
        Logger log = mock(Logger.class);
        when(bundleContext.getServiceReferences(Logger.class.getName(), null)).thenReturn(
                new ServiceReference[] { ref });
        when(bundleContext.getService(ref)).thenReturn(log);

        InjectorSpecificAnnotationModel model = factory.getAdapter(request, InjectorSpecificAnnotationModel.class);
        assertNotNull("Could not instanciate model", model);
        assertEquals(log, model.getService());
    }

    @Test
    public void testScriptVariableField() throws InvalidSyntaxException {
        SlingBindings bindings = new SlingBindings();
        SlingScriptHelper helper = mock(SlingScriptHelper.class);
        bindings.setSling(helper);
        when(request.getAttribute(SlingBindings.class.getName())).thenReturn(bindings);

        InjectorSpecificAnnotationModel model = factory.getAdapter(request, InjectorSpecificAnnotationModel.class);
        assertNotNull("Could not instanciate model", model);
        assertEquals(helper, model.getHelper());
    }

    @Test
    public void testRequestAttributeField() throws InvalidSyntaxException {
        Object attribute = new Object();
        when(request.getAttribute("attribute")).thenReturn(attribute);

        InjectorSpecificAnnotationModel model = factory.getAdapter(request, InjectorSpecificAnnotationModel.class);
        assertNotNull("Could not instanciate model", model);
        assertEquals(attribute, model.getRequestAttribute());
    }

    @Test
    public void testChildResourceField() {
        Resource res = mock(Resource.class);
        Resource child = mock(Resource.class);
        when(res.getChild("child1")).thenReturn(child);
        when(request.getResource()).thenReturn(res);

        InjectorSpecificAnnotationModel model = factory.getAdapter(request, InjectorSpecificAnnotationModel.class);
        assertNotNull("Could not instanciate model", model);
        assertEquals(child, model.getChildResource());
    }

    @Test
    public void testSimpleValueModelConstructor() {
        Map<String, Object> map = new HashMap<String, Object>();
        map.put("first", "first-value");
        map.put("second", "second-value");
        ValueMap vm = new ValueMapDecorator(map);

        Resource res = mock(Resource.class);
        when(res.adaptTo(ValueMap.class)).thenReturn(vm);
        when(request.getResource()).thenReturn(res);

        org.apache.sling.models.testmodels.classes.constructorinjection.InjectorSpecificAnnotationModel model
                = factory.getAdapter(request, org.apache.sling.models.testmodels.classes.constructorinjection.InjectorSpecificAnnotationModel.class);
        assertNotNull("Could not instanciate model", model);
        assertEquals("first-value", model.getFirst());
        assertEquals("second-value", model.getSecond());
    }

    @Test
    public void testOrderForValueAnnotationConstructor() {
        // make sure that that the correct injection is used
        // make sure that log is adapted from value map
        // and not coming from request attribute
        Logger logFromValueMap = LoggerFactory.getLogger(this.getClass());

        Map<String, Object> map = new HashMap<String, Object>();
        map.put("first", "first-value");
        map.put("log", logFromValueMap);
        ValueMap vm = new ValueMapDecorator(map);

        Resource res = mock(Resource.class);
        when(res.adaptTo(ValueMap.class)).thenReturn(vm);
        when(request.getResource()).thenReturn(res);

        org.apache.sling.models.testmodels.classes.constructorinjection.InjectorSpecificAnnotationModel model
                = factory.getAdapter(request, org.apache.sling.models.testmodels.classes.constructorinjection.InjectorSpecificAnnotationModel.class);
        assertNotNull("Could not instanciate model", model);
        assertEquals("first-value", model.getFirst());
        assertEquals(logFromValueMap, model.getLog());
    }

    @Test
    public void testOSGiServiceConstructor() throws InvalidSyntaxException {
        ServiceReference ref = mock(ServiceReference.class);
        Logger log = mock(Logger.class);
        when(bundleContext.getServiceReferences(Logger.class.getName(), null)).thenReturn(
                new ServiceReference[] { ref });
        when(bundleContext.getService(ref)).thenReturn(log);

        org.apache.sling.models.testmodels.classes.constructorinjection.InjectorSpecificAnnotationModel model
                = factory.getAdapter(request, org.apache.sling.models.testmodels.classes.constructorinjection.InjectorSpecificAnnotationModel.class);
        assertNotNull("Could not instanciate model", model);
        assertEquals(log, model.getService());
    }

    @Test
    public void testScriptVariableConstructor() throws InvalidSyntaxException {
        SlingBindings bindings = new SlingBindings();
        SlingScriptHelper helper = mock(SlingScriptHelper.class);
        bindings.setSling(helper);
        when(request.getAttribute(SlingBindings.class.getName())).thenReturn(bindings);

        org.apache.sling.models.testmodels.classes.constructorinjection.InjectorSpecificAnnotationModel model
                = factory.getAdapter(request, org.apache.sling.models.testmodels.classes.constructorinjection.InjectorSpecificAnnotationModel.class);
        assertNotNull("Could not instanciate model", model);
        assertEquals(helper, model.getHelper());
    }

    @Test
    public void testRequestAttributeConstructor() throws InvalidSyntaxException {
        Object attribute = new Object();
        when(request.getAttribute("attribute")).thenReturn(attribute);

        org.apache.sling.models.testmodels.classes.constructorinjection.InjectorSpecificAnnotationModel model
                = factory.getAdapter(request, org.apache.sling.models.testmodels.classes.constructorinjection.InjectorSpecificAnnotationModel.class);
        assertNotNull("Could not instanciate model", model);
        assertEquals(attribute, model.getRequestAttribute());
    }

    @Test
    public void testChildResourceConstructor() {
        Resource res = mock(Resource.class);
        Resource child = mock(Resource.class);
        when(res.getChild("child1")).thenReturn(child);
        when(request.getResource()).thenReturn(res);

        org.apache.sling.models.testmodels.classes.constructorinjection.InjectorSpecificAnnotationModel model
                = factory.getAdapter(request, org.apache.sling.models.testmodels.classes.constructorinjection.InjectorSpecificAnnotationModel.class);
        assertNotNull("Could not instanciate model", model);
        assertEquals(child, model.getChildResource());
    }

}