/*
    * 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 javax.annotation.PostConstruct;
  import java.lang.reflect.Type;
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.logging.log4j.LogManager;
  import org.apache.logging.log4j.Logger;
  import org.apache.logging.log4j.catalog.api.Category;
  import org.apache.logging.log4j.catalog.jpa.model.CategoryModel;
  import org.apache.logging.log4j.catalog.jpa.service.CategoryService;
  import org.apache.logging.log4j.catalog.jpa.converter.CategoryConverter;
  import org.apache.logging.log4j.catalog.jpa.converter.CategoryModelConverter;
  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.PostMapping;
  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;
  
  /**
   * Catalog Category controller
   */
  
  @RequestMapping(value = "/api/categories")
  @RestController
  public class CategoryController {
      private static final Logger LOGGER = LogManager.getLogger();
  
      private ModelMapper modelMapper = new ModelMapper();
  
      @Autowired
      private CategoryService categoryService;
  
  
      @Autowired
      private CategoryModelConverter categoryModelConverter;
  
      @Autowired
      private CategoryConverter categoryConverter;
  
      @PostConstruct
      public void init() {
          modelMapper.addConverter(categoryModelConverter);
      }
  
      @PostMapping(value = "/list")
      public ResponseEntity<Map<String, Object>> categoryList(@RequestParam(value="jtStartIndex", required=false) Integer startIndex,
                                                              @RequestParam(value="jtPageSize", required=false) Integer pageSize,
                                                              @RequestParam(value="jtSorting", required=false) String sorting) {
          Type listType = new TypeToken<List<Category>>() {}.getType();
          Map<String, Object> response = new HashMap<>();
          try {
              List<Category> categories = null;
              if (startIndex == null || pageSize == null) {
                  categories = modelMapper.map(categoryService.getCategories(), listType);
              } else {
                  int startPage = 0;
                  if (startIndex > 0) {
                      startPage = startIndex / pageSize;
                  }
                  String sortColumn = "name";
                  String sortDirection = "ASC";
                  if (sorting != null) {
                      String[] sortInfo = sorting.split(" ");
                      sortColumn = sortInfo[0];
                      if (sortInfo.length > 0) {
                          sortDirection = sortInfo[1];
                      }
                  }
                  categories = modelMapper.map(categoryService.getCategories(startPage, pageSize, sortColumn, sortDirection), listType);
              }
              if (categories == null) {
                  categories = new ArrayList<>();
              }
              response.put("Result", "OK");
             response.put("Records", categories);
         } catch (Exception ex) {
             response.put("Result", "FAILURE");
         }
         return new ResponseEntity<>(response, HttpStatus.OK);
     }
 
     @PostMapping(value = "/create")
     public ResponseEntity<Map<String, Object>> createCategory(@RequestBody Category category) {
         Map<String, Object> response = new HashMap<>();
         try {
             CategoryModel model = categoryConverter.convert(category);
             model = categoryService.saveCategory(model);
             response.put("Result", "OK");
             response.put("Records", categoryModelConverter.convert(model));
         } catch (Exception ex) {
             response.put("Result", "FAILURE");
         }
         return new ResponseEntity<>(response, HttpStatus.OK);
     }
 
     @PostMapping(value = "/update")
     public ResponseEntity<Map<String, Object>> updateCategory(@RequestBody Category category) {
         Map<String, Object> response = new HashMap<>();
         try {
             CategoryModel model = categoryConverter.convert(category);
             model = categoryService.saveCategory(model);
             response.put("Result", "OK");
             response.put("Records", categoryModelConverter.convert(model));
         } catch (Exception ex) {
             response.put("Result", "FAILURE");
         }
         return new ResponseEntity<>(response, HttpStatus.OK);
     }
 
     @PostMapping(value = "/delete")
     public ResponseEntity<Map<String, Object>> deleteCategory(@RequestBody Category category) {
         Map<String, Object> response = new HashMap<>();
         try {
             categoryService.deleteCategory(category.getId());
             response.put("Result", "OK");
         } catch (Exception ex) {
             response.put("Result", "FAILURE");
         }
         return new ResponseEntity<>(response, HttpStatus.OK);
     }
 }