/*
 * 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.streampipes.manager.remote;

import com.google.gson.JsonSyntaxException;
import org.apache.http.client.fluent.Request;
import org.apache.http.client.fluent.Response;
import org.apache.http.entity.ContentType;
import org.apache.streampipes.commons.exceptions.NoServiceEndpointsAvailableException;
import org.apache.streampipes.manager.execution.endpoint.ExtensionsServiceEndpointGenerator;
import org.apache.streampipes.manager.execution.endpoint.ExtensionsServiceEndpointUtils;
import org.apache.streampipes.model.runtime.RuntimeOptionsRequest;
import org.apache.streampipes.model.runtime.RuntimeOptionsResponse;
import org.apache.streampipes.serializers.json.JacksonSerializer;
import org.apache.streampipes.svcdiscovery.api.model.SpServiceUrlProvider;

import java.io.IOException;

public class ContainerProvidedOptionsHandler {


  public RuntimeOptionsResponse fetchRemoteOptions(RuntimeOptionsRequest request) {

    try {
      String httpRequestBody = JacksonSerializer.getObjectMapper().writeValueAsString(request);
      Response httpResp = Request.Post(getEndpointUrl(request.getAppId())).bodyString(httpRequestBody, ContentType.APPLICATION_JSON).execute();
      return handleResponse(httpResp);
    } catch (Exception e) {
      e.printStackTrace();
      return new RuntimeOptionsResponse();
    }
  }

  private RuntimeOptionsResponse handleResponse(Response httpResp) throws JsonSyntaxException, IOException {
    String resp = httpResp.returnContent().asString();
    return JacksonSerializer.getObjectMapper().readValue(resp, RuntimeOptionsResponse.class);
  }

  private String getEndpointUrl(String appId) throws NoServiceEndpointsAvailableException {
    SpServiceUrlProvider provider = ExtensionsServiceEndpointUtils.getPipelineElementType(appId);
    return new ExtensionsServiceEndpointGenerator(appId, provider).getEndpointResourceUrl() + "/configurations";
  }
}
