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/*
 * Licensed to Laurent Broudoux (the "Author") under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. Author 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 io.github.microcks.web;

import io.github.microcks.domain.GenericResource;
import io.github.microcks.repository.GenericResourceRepository;
import org.bson.Document;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.PageRequest;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * @author laurent
 */
@org.springframework.web.bind.annotation.RestController
@RequestMapping("/api")
public class GenericResourceController {

   /** A simple logger for diagnostic messages. */
   private static Logger log = LoggerFactory.getLogger(GenericResourceController.class);

   public static final String ID_FIELD = "id";

   @Autowired
   GenericResourceRepository genericResourceRepository;

   @RequestMapping(value = "/genericresources/service/{serviceId}", method = RequestMethod.GET)
   public List listResources(
         @PathVariable("serviceId") String serviceId,
         @RequestParam(value = "page", required = false, defaultValue = "0") int page,
         @RequestParam(value = "size", required = false, defaultValue = "10") int size
   ) {
      log.debug("List resources for service '{}'", serviceId);

      List genericResources = genericResourceRepository.findByServiceId(serviceId, PageRequest.of(page, size));
      // Transform and collect resources.
      List resources = genericResources.stream()
            .map(genericResource -> addIdToPayload(genericResource))
            .collect(Collectors.toList());

      return resources;
   }

   @RequestMapping(value = "/genericresources/service/{serviceId}/count", method = RequestMethod.GET)
   public Map countResources(
         @PathVariable("serviceId") String serviceId
   ) {
      log.debug("Counting resources for service '{}'", serviceId);

      Map counter = new HashMap<>();
      counter.put("counter", genericResourceRepository.countByServiceId(serviceId));
      return counter;
   }

   private GenericResource addIdToPayload(GenericResource genericResource) {
      Document document = genericResource.getPayload();
      document.append(ID_FIELD, genericResource.getId());
      return genericResource;
   }
}