package net.sumaris.server.http.graphql;
   
   /*-
    * #%L
    * SUMARiS:: Server
    * %%
    * Copyright (C) 2018 SUMARiS Consortium
    * %%
    * This program is free software: you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as
   * published by the Free Software Foundation, either version 3 of the
   * License, or (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public
   * License along with this program.  If not, see
   * <http://www.gnu.org/licenses/gpl-3.0.html>.
   * #L%
   */
  
  import com.fasterxml.jackson.databind.ObjectMapper;
  import graphql.ExecutionInput;
  import graphql.ExecutionResult;
  import graphql.GraphQL;
  import graphql.schema.GraphQLSchema;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.http.MediaType;
  import org.springframework.web.bind.annotation.PostMapping;
  import org.springframework.web.bind.annotation.RequestBody;
  import org.springframework.web.bind.annotation.ResponseBody;
  import org.springframework.web.bind.annotation.RestController;
  
  import javax.servlet.http.HttpServletRequest;
  import java.util.Map;
  
  
  @RestController
  public class GraphQLRestController {
  
      private static final Logger log = LoggerFactory.getLogger(GraphQLRestController.class);
  
      private final GraphQL graphQL;
  
      private final ObjectMapper objectMapper;
  
      @Autowired
      public GraphQLRestController(GraphQLSchema schema,
                                   ObjectMapper objectMapper) {
          this.graphQL = GraphQL.newGraphQL(schema).build();
          this.objectMapper = objectMapper;
          log.info(String.format("Starting GraphQL rest controller at {%s}...", GraphQLPaths.BASE_PATH));
      }
  
  
  
      @PostMapping(value = GraphQLPaths.BASE_PATH, consumes = MediaType.APPLICATION_JSON_UTF8_VALUE, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
      @ResponseBody
      public Map<String, Object> indexFromAnnotated(@RequestBody Map<String, Object> request, HttpServletRequest rawRequest) {
          ExecutionResult executionResult = graphQL.execute(ExecutionInput.newExecutionInput()
                  .query((String) request.get("query"))
                  .operationName((String) request.get("operationName"))
                  .variables(GraphQLHelper.getVariables(request, objectMapper))
                  .context(rawRequest)
                  .build());
  
          return GraphQLHelper.processExecutionResult(executionResult);
      }
  
      /* -- private methods -- */
  
  }