/*
 * Copyright 2014-2015 Groupon, Inc
 * Copyright 2014-2015 The Billing Project, LLC
 *
 * The Billing Project 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.killbill.billing.jaxrs.resources;

import javax.inject.Inject;
import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;

import org.killbill.billing.account.api.AccountUserApi;
import org.killbill.billing.entitlement.api.SubscriptionApiException;
import org.killbill.billing.jaxrs.json.PluginInfoJson;
import org.killbill.billing.jaxrs.util.Context;
import org.killbill.billing.jaxrs.util.JaxrsUriBuilder;
import org.killbill.billing.osgi.api.PluginInfo;
import org.killbill.billing.osgi.api.PluginsInfoApi;
import org.killbill.billing.payment.api.PaymentApi;
import org.killbill.billing.util.api.AuditUserApi;
import org.killbill.billing.util.api.CustomFieldUserApi;
import org.killbill.billing.util.api.TagUserApi;
import org.killbill.clock.Clock;
import org.killbill.commons.metrics.TimedResource;

import com.google.common.base.Function;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Iterables;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;

import static javax.ws.rs.core.MediaType.APPLICATION_JSON;

@Path(JaxrsResource.PLUGINS_INFO_PATH)
@Api(value = JaxrsResource.PLUGINS_INFO_PATH, description = "Operations on plugins")
public class PluginInfoResource extends JaxRsResourceBase {

    private final PluginsInfoApi pluginsInfoApi;

    @Inject
    public PluginInfoResource(final JaxrsUriBuilder uriBuilder,
                              final TagUserApi tagUserApi,
                              final CustomFieldUserApi customFieldUserApi,
                              final AuditUserApi auditUserApi,
                              final AccountUserApi accountUserApi,
                              final PaymentApi paymentApi,
                              final PluginsInfoApi pluginsInfoApi,
                              final Clock clock,
                              final Context context) {
        super(uriBuilder, tagUserApi, customFieldUserApi, auditUserApi, accountUserApi, paymentApi, null, clock, context);
        this.pluginsInfoApi = pluginsInfoApi;
    }

    @TimedResource
    @GET
    @Produces(APPLICATION_JSON)
    @ApiOperation(value = "Retrieve the list of registered plugins", response = PluginInfoJson.class, responseContainer = "List")
    public Response getPluginsInfo(@javax.ws.rs.core.Context final HttpServletRequest request) throws SubscriptionApiException {
        return Response.status(Status.OK).entity(ImmutableList.copyOf(Iterables.transform(pluginsInfoApi.getPluginsInfo(), new Function<PluginInfo, PluginInfoJson>() {
            @Override
            public PluginInfoJson apply(final PluginInfo input) {
                return new PluginInfoJson(input);
            }
        }))).build();
    }

}