/*
    * 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.logging.log4j.catalog.controller;
  
  import java.lang.reflect.Type;
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  
  import org.apache.logging.log4j.LogManager;
  import org.apache.logging.log4j.Logger;
  import org.apache.logging.log4j.catalog.api.Attribute;
  import org.apache.logging.log4j.catalog.api.Constraint;
  import org.apache.logging.log4j.catalog.jpa.model.ConstraintModel;
  import org.apache.logging.log4j.catalog.jpa.service.ConstraintService;
  import org.modelmapper.ModelMapper;
  import org.modelmapper.TypeToken;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.http.HttpStatus;
  import org.springframework.http.ResponseEntity;
  import org.springframework.web.bind.annotation.DeleteMapping;
  import org.springframework.web.bind.annotation.GetMapping;
  import org.springframework.web.bind.annotation.PostMapping;
  import org.springframework.web.bind.annotation.PutMapping;
  import org.springframework.web.bind.annotation.RequestBody;
  import org.springframework.web.bind.annotation.RequestMapping;
  import org.springframework.web.bind.annotation.RequestParam;
  import org.springframework.web.bind.annotation.RestController;
  
  /**
   * Constraint controller
   */
  
  @RequestMapping(value = "/api/constraints")
  @RestController
  public class ConstraintController {
      private static final Logger LOGGER = LogManager.getLogger();
  
      private ModelMapper modelMapper = new ModelMapper();
  
      @Autowired
      private ConstraintService constraintService;
  
      @PostMapping(value = "/list")
      public ResponseEntity<Map<String, Object>> attributeList(@RequestParam("attributeId") Long attributeId) {
          Type listType = new TypeToken<List<Attribute>>() {}.getType();
          Map<String, Object> response = new HashMap<>();
          try {
              List<Attribute> attributes = modelMapper.map(constraintService.getConstraints(), listType);
              if (attributes == null) {
                  attributes = new ArrayList<>();
              }
              response.put("Result", "OK");
              response.put("Records", attributes);
          } catch (Exception ex) {
              response.put("Result", "FAILURE");
          }
          return new ResponseEntity<>(response, HttpStatus.OK);
      }
  
      @GetMapping(value = "/types")
      public ResponseEntity<Set<String>> getConstraintTypes() {
          return new ResponseEntity<>(constraintService.getConstraintTypes(), HttpStatus.OK);
      }
  
      @PostMapping(value = "/constraint")
      public ResponseEntity<Long> addConstraint(@RequestBody Constraint constraint) {
          ConstraintModel model = modelMapper.map(constraint, ConstraintModel.class);
          model = constraintService.saveConstraint(model);
          return new ResponseEntity<>(model.getId(), HttpStatus.CREATED);
      }
  
      @PutMapping(value = "/constraint/{id}")
      public ResponseEntity<Long> updateConstraint(@RequestParam Long id, @RequestBody Constraint constraint) {
          ConstraintModel model = modelMapper.map(constraint, ConstraintModel.class);
          model.setId(id);
          model = constraintService.saveConstraint(model);
          return new ResponseEntity<>(model.getId(), HttpStatus.OK);
      }
  
      @DeleteMapping(value = "/constraint/{id}")
      public ResponseEntity<?> deleteConstraint(@RequestParam Long id) {
          constraintService.deleteConstraint(id);
         return new ResponseEntity<>(HttpStatus.NO_CONTENT);
     }
 }