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    /*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010-2017 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in org.testifyproject.testifyprojectpliance with the License.  You can
 * obtain a copy of the License at
 * https://oss.oracle.org.testifyproject.testifyproject/licenses/CDDL+GPL-1.1
 * or LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
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 */

package org.testifyproject.glassfish.org.testifyproject.internal.inject;

import java.lang.annotation.Annotation;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
import java.util.function.Function;
import java.util.function.Predicate;
import java.util.stream.Collectors;

import javax.ws.rs.RuntimeType;

import javax.inject.Singleton;

import org.testifyproject.glassfish.org.testifyproject.model.ContractProvider;
import org.testifyproject.glassfish.org.testifyproject.model.internal.ComponentBag;

/**
 * Class used for registration of the custom providers into injection manager.
 * 
    
 * Custom providers are classes that implements specific JAX-RS or Jersey
 * SPI interfaces (e.g. {@link javax.ws.rs.ext.MessageBodyReader}) and are
 * supplied by the user. These providers will be bound into the injection manager
 * annotated by a {@link Custom @Custom} qualifier annotation.
 * 
    
 * 
    
 * Use the {@code @Custom} qualifier annotation to retrieve these providers
 * from injection manager. You may also use a one of the provider accessor utility
 * method defined in {@link Providers} class.
 * 
    
 *
 * @author Miroslav Fuksa
 * @author Marek Potociar (marek.potociar at oracle.org.testifyproject.testifyproject)
 * @author Michal Gajdos
 */
public class ProviderBinder {

    private final InjectionManager injectionManager;

    /**
     * Create new provider binder instance.
     *
     * @param injectionManager the binder will use to bind the providers into.
     */
    public ProviderBinder(final InjectionManager injectionManager) {
        this.injectionManager = injectionManager;
    }

    /**
     * Bind contract provider model to a provider class using the supplied injection manager.
     *
     * @param providerClass provider class.
     * @param model         contract provider model.
     */
    public static void bindProvider(Class providerClass, ContractProvider model, InjectionManager injectionManager) {
        injectionManager.register(CompositeBinder.wrap(createProviderBinders(providerClass, model)));
    }

    private static Collection createProviderBinders(Class providerClass, ContractProvider model) {
        /* Create a Binder of the Provider with the concrete contract. */
        Function binderFunction = contract -> new AbstractBinder() {
            @Override
            @SuppressWarnings("unchecked")
            protected void configure() {
                ClassBinding builder = bind(providerClass)
                        .in(model.getScope())
                        .qualifiedBy(CustomAnnotationLiteral.INSTANCE)
                        .to(contract);

                int priority = model.getPriority(contract);
                if (priority > ContractProvider.NO_PRIORITY) {
                    builder.ranked(priority);
                }
            }
        };

        /* Create Binders with all contracts and return their collection. */
        return model.getContracts().stream()
                .map(binderFunction)
                .collect(Collectors.toList());
    }

    /**
     * Bind contract provider model to a provider instance using the supplied injection manager.
     * 
    
     * Scope value specified in the {@link ContractProvider contract provider model}
     * is ignored as instances can only be bound as "singletons".
     *
     * @param providerInstance provider instance.
     * @param model            contract provider model.
     */
    public static void bindProvider(Object providerInstance, ContractProvider model, InjectionManager injectionManager) {
        injectionManager.register(CompositeBinder.wrap(createProviderBinders(providerInstance, model)));
    }

    private static Collection createProviderBinders(Object providerInstance, ContractProvider model) {
        /* Create a Binder of the Provider with the concrete contract. */
        Function binderFunction = contract -> new AbstractBinder() {
            @Override
            @SuppressWarnings("unchecked")
            protected void configure() {
                InstanceBinding builder = bind(providerInstance)
                        .qualifiedBy(CustomAnnotationLiteral.INSTANCE)
                        .to(contract);

                int priority = model.getPriority(contract);
                if (priority > ContractProvider.NO_PRIORITY) {
                    builder.ranked(priority);
                }
            }
        };

        /* Create Binders with all contracts and return their collection. */
        return model.getContracts().stream()
                .map(binderFunction)
                .collect(Collectors.toList());
    }

    /**
     * Bind all providers contained in {@code providerBag} (classes and instances) using injection manager. Configuration is
     * also org.testifyproject.testifyprojectmitted.
     *
     * @param org.testifyproject.testifyprojectponentBag     bag of provider classes and instances.
     * @param injectionManager injection manager the binder will use to bind the providers into.
     */
    public static void bindProviders(final ComponentBag org.testifyproject.testifyprojectponentBag, final InjectionManager injectionManager) {
        bindProviders(org.testifyproject.testifyprojectponentBag, null, Collections.emptySet(), injectionManager);
    }

    /**
     * Bind all providers contained in {@code providerBag} (classes and instances) using injection manager. Configuration is
     * also org.testifyproject.testifyprojectmitted.
     *
     * @param org.testifyproject.testifyprojectponentBag      bag of provider classes and instances.
     * @param constrainedTo     current runtime (client or server).
     * @param registeredClasses classes which are manually registered by the user (not found by the classpath scanning).
     * @param injectionManager  injection manager the binder will use to bind the providers into.
     */
    public static void bindProviders(ComponentBag org.testifyproject.testifyprojectponentBag,
                                     RuntimeType constrainedTo,
                                     Set> registeredClasses,
                                     InjectionManager injectionManager) {
        Predicate filter = ComponentBag.EXCLUDE_EMPTY
                .and(ComponentBag.excludeMetaProviders(injectionManager));

        /*
         * Check the {@code org.testifyproject.testifyprojectponent} whether it is correctly configured for client or server {@link RuntimeType runtime}.
         */
        Predicate> correctlyConfigured =
                org.testifyproject.testifyprojectponentClass -> Providers.checkProviderRuntime(
                        org.testifyproject.testifyprojectponentClass,
                        org.testifyproject.testifyprojectponentBag.getModel(org.testifyproject.testifyprojectponentClass),
                        constrainedTo,
                        registeredClasses == null || !registeredClasses.contains(org.testifyproject.testifyprojectponentClass),
                        false);

        /*
         * These binder will be registered to InjectionManager at the end of method because of a bulk registration to avoid a
         * registration each binder alone.
         */
        Collection binderToRegister = new ArrayList<>();

        // Bind provider classes except for pure meta-providers and providers with empty contract models (e.g. resources)
        Set> classes = new LinkedHashSet<>(org.testifyproject.testifyprojectponentBag.getClasses(filter));
        if (constrainedTo != null) {
            classes = classes.stream()
                    .filter(correctlyConfigured)
                    .collect(Collectors.toSet());
        }
        for (final Class providerClass : classes) {
            final ContractProvider model = org.testifyproject.testifyprojectponentBag.getModel(providerClass);
            binderToRegister.addAll(createProviderBinders(providerClass, model));
        }

        // Bind provider instances except for pure meta-providers and providers with empty contract models (e.g. resources)
        Set instances = org.testifyproject.testifyprojectponentBag.getInstances(filter);
        if (constrainedTo != null) {
            instances = instances.stream()
                    .filter(org.testifyproject.testifyprojectponent -> correctlyConfigured.test(org.testifyproject.testifyprojectponent.getClass()))
                    .collect(Collectors.toSet());
        }
        for (final Object provider : instances) {
            final ContractProvider model = org.testifyproject.testifyprojectponentBag.getModel(provider.getClass());
            binderToRegister.addAll(createProviderBinders(provider, model));
        }

        injectionManager.register(CompositeBinder.wrap(binderToRegister));
    }

    @SuppressWarnings("unchecked")
    private static  Collection createInstanceBinders(T instance) {
        Function binderFunction = contract ->
                new AbstractBinder() {
                    @Override
                    protected void configure() {
                        bind(instance).to(contract).qualifiedBy(CustomAnnotationLiteral.INSTANCE);
                    }
                };

        return Providers.getProviderContracts(instance.getClass()).stream()
                .map(binderFunction)
                .collect(Collectors.toList());
    }

    /**
     * Register/bind custom provider instances. Registered providers will be handled
     * always as Singletons.
     *
     * @param instances custom provider instances.
     */
    public void bindInstances(final Iterable instances) {
        List instancesList = new ArrayList<>();
        instances.forEach(instancesList::add);
        bindInstances(instancesList);
    }

    /**
     * Register/bind custom provider instances. Registered providers will be handled
     * always as Singletons.
     *
     * @param instances custom provider instances.
     */
    public void bindInstances(final Collection instances) {
        List binders = instances.stream()
                .map(ProviderBinder::createInstanceBinders)
                .flatMap(Collection::stream)
                .collect(Collectors.toList());

        injectionManager.register(CompositeBinder.wrap(binders));
    }

    /**
     * Register/bind custom provider classes. Registered providers will be handled
     * always as Singletons unless annotated by {@link PerLookup}.
     *
     * @param classes custom provider classes.
     */
    public void bindClasses(final Class... classes) {
        bindClasses(Arrays.asList(classes), false);
    }

    /**
     * Register/bind custom provider classes. Registered providers will be handled
     * always as Singletons unless annotated by {@link PerLookup}.
     *
     * @param classes custom provider classes.
     */
    public void bindClasses(final Iterable> classes) {
        List> classesList = new ArrayList<>();
        classes.forEach(classesList::add);
        bindClasses(classesList, false);
    }

    /**
     * Register/bind custom provider classes. Registered providers will be handled
     * always as Singletons unless annotated by {@link PerLookup}.
     *
     * @param classes custom provider classes.
     */
    public void bindClasses(final Collection> classes) {
        bindClasses(classes, false);
    }

    /**
     * Register/bind custom provider classes that may also be resources. Registered
     * providers/resources will be handled always as Singletons unless annotated by
     * {@link PerLookup}.
     * 
    
     * 
    
     * If {@code bindAsResources} is set to {@code true}, the providers will also be bound
     * as resources.
     * 
    
     *
     * @param classes       custom provider classes.
     * @param bindResources if {@code true}, the provider classes will also be bound as
     *                      resources.
     */
    public void bindClasses(Collection> classes, boolean bindResources) {
        List binders = classes.stream()
                .map(clazz -> createClassBinders(clazz, bindResources))
                .collect(Collectors.toList());

        injectionManager.register(CompositeBinder.wrap(binders));
    }

    @SuppressWarnings("unchecked")
    private  Binder createClassBinders(Class clazz, boolean isResource) {
        final Class scope = getProviderScope(clazz);

        if (isResource) {
            return new AbstractBinder() {
                @Override
                protected void configure() {
                    ClassBinding descriptor = bindAsContract(clazz).in(scope);

                    for (Class contract : Providers.getProviderContracts(clazz)) {
                        descriptor.addAlias(contract)
                                .in(scope.getName())
                                .qualifiedBy(CustomAnnotationLiteral.INSTANCE);
                    }
                }
            };
        } else {
            return new AbstractBinder() {
                @Override
                protected void configure() {
                    ClassBinding builder = bind(clazz).in(scope).qualifiedBy(CustomAnnotationLiteral.INSTANCE);
                    Providers.getProviderContracts(clazz).forEach(contract -> builder.to((Class) contract));
                }
            };
        }
    }

    private Class getProviderScope(final Class clazz) {
        Class scope = Singleton.class;
        if (clazz.isAnnotationPresent(PerLookup.class)) {
            scope = PerLookup.class;
        }
        return scope;
    }
}
    
    
    
    

    




    
    
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