/*
    * Copyright 2011 The Kuali Foundation.
    * 
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    * 
   * 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.kuali.ole.select.service.impl;
  
  import org.kuali.ole.select.OleSelectConstant;
  import org.kuali.ole.select.service.FileProcessingService;
  import org.kuali.ole.sys.context.SpringContext;
  import org.kuali.rice.core.api.config.property.ConfigurationService;
  
  import java.io.*;
  import java.util.HashMap;
  
  public class FileProcessingServiceImpl implements FileProcessingService {
      protected static org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(FileProcessingServiceImpl.class);
  
      @Override
      public HashMap<String, String> getFileContentAndDeleteFile(HashMap<String, String> dataMap) throws Exception {
          StringBuilder strigObj = new StringBuilder();
          String xmlString = null;
          String filePath = dataMap.get(OleSelectConstant.FILEPATH) + dataMap.get(OleSelectConstant.FILENAME) + OleSelectConstant.XML_FILE_TYPE_EXTENSION;
          boolean isFileExist = true;
          boolean isBibEdit = false;
          if (isCreateFileExist(dataMap)) {
              isFileExist = true;
          } else if (isEditFileExist(dataMap)) {
              isFileExist = true;
              isBibEdit = true;
              filePath = dataMap.get(OleSelectConstant.FILEPATH) + dataMap.get(OleSelectConstant.FILENAME) + "edit" + OleSelectConstant.XML_FILE_TYPE_EXTENSION;
          }
  
          if (LOG.isInfoEnabled())
              LOG.info("FileProcessingServiceImpl.getFileContentAndDeleteFile filePath--------->" + filePath);
          FileInputStream fstream = null;
          DataInputStream in = null;
          BufferedReader br = null;
          try {
              if (isFileExist) {
                  fstream = new FileInputStream(filePath);
                  in = new DataInputStream(fstream);
                  br = new BufferedReader(new InputStreamReader(in));
                  String strLine;
                  while ((strLine = br.readLine()) != null) {
                      strigObj.append(strLine);
                  }
                  xmlString = strigObj.toString();
              }
          } catch (FileNotFoundException fnfe) {
              throw new FileNotFoundException("The file mentioned in particular path is not available");
          } catch (Exception e) {
              LOG.error("Exception while getting the file content of the file...",e);
              throw new RuntimeException(e);
          } finally {
              if (in != null && br != null) {
                  fstream.close();
                  in.close();
                  br.close();
              }
          }
          File file = new File(filePath);
          file.delete();
          dataMap.put(OleSelectConstant.XML_FILE_CONTENT, xmlString);
          dataMap.put(OleSelectConstant.IS_BIB_EDIT, String.valueOf(isBibEdit));
          return dataMap;
      }
  
      public String getMarcXMLFileDirLocation() throws Exception {
          ConfigurationService kualiConfigurationService = SpringContext.getBean(ConfigurationService.class);
          String externaleDirectory = kualiConfigurationService.getPropertyValueAsString(OleSelectConstant.BIBMARCXML_DIR);
          return externaleDirectory;
      }
  
      public boolean isCreateFileExist(HashMap<String, String> dataMap) throws Exception {
          String filePath = dataMap.get(OleSelectConstant.FILEPATH) + dataMap.get(OleSelectConstant.FILENAME) + OleSelectConstant.XML_FILE_TYPE_EXTENSION;
          File file = new File(filePath);
          boolean isFileExist = true;
          if (!file.exists()) {
              isFileExist = false;
          }
          return isFileExist;
      }
  
      public boolean isEditFileExist(HashMap<String, String> dataMap) throws Exception {
          String filePath = dataMap.get(OleSelectConstant.FILEPATH) + dataMap.get(OleSelectConstant.FILENAME) + OleSelectConstant.XML_FILE_TYPE_EXTENSION;
          File file = new File(filePath);
          boolean isFileExist = true;
          if (!file.exists()) {
             filePath = dataMap.get(OleSelectConstant.FILEPATH) + dataMap.get(OleSelectConstant.FILENAME) + "edit" + OleSelectConstant.XML_FILE_TYPE_EXTENSION;
             file = new File(filePath);
             if (file.exists()) {
                 isFileExist = true;
             } else {
                 isFileExist = false;
             }
         }
         return isFileExist;
     }
 
 }