content: /*
   This file is part of Airsonic.
  
   Airsonic 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.
  
   Airsonic 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 Airsonic.  If not, see <http://www.gnu.org/licenses/>.
  
   Copyright 2016 (C) Airsonic Authors
   Based upon Subsonic, Copyright 2009 (C) Sindre Mehus
   */
  package org.airsonic.player.controller;
  
  import org.airsonic.player.command.MusicFolderSettingsCommand;
  import org.airsonic.player.dao.AlbumDao;
  import org.airsonic.player.dao.ArtistDao;
  import org.airsonic.player.dao.MediaFileDao;
  import org.airsonic.player.domain.MediaLibraryStatistics;
  import org.airsonic.player.domain.MusicFolder;
  import org.airsonic.player.service.MediaScannerService;
  import org.airsonic.player.service.SettingsService;
  import org.airsonic.player.service.search.IndexManager;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.stereotype.Controller;
  import org.springframework.ui.Model;
  import org.springframework.web.bind.annotation.GetMapping;
  import org.springframework.web.bind.annotation.ModelAttribute;
  import org.springframework.web.bind.annotation.PostMapping;
  import org.springframework.web.bind.annotation.RequestMapping;
  import org.springframework.web.bind.annotation.RequestParam;
  import org.springframework.web.servlet.mvc.support.RedirectAttributes;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.stream.Collectors;
  
  /**
   * Controller for the page used to administrate the set of music folders.
   *
   * @author Sindre Mehus
   */
  @Controller
  @RequestMapping("/musicFolderSettings")
  public class MusicFolderSettingsController {
  
      private static final Logger LOG = LoggerFactory.getLogger(MusicFolderSettingsController.class);
  
      @Autowired
      private SettingsService settingsService;
      @Autowired
      private MediaScannerService mediaScannerService;
      @Autowired
      private ArtistDao artistDao;
      @Autowired
      private AlbumDao albumDao;
      @Autowired
      private MediaFileDao mediaFileDao;
      @Autowired
      private IndexManager indexManager;
  
      @GetMapping
      protected String displayForm() {
          return "musicFolderSettings";
      }
  
      @ModelAttribute
      protected void formBackingObject(@RequestParam(value = "scanNow",required = false) String scanNow,
                                         @RequestParam(value = "expunge",required = false) String expunge,
                                         Model model) {
          MusicFolderSettingsCommand command = new MusicFolderSettingsCommand();
  
          if (scanNow != null) {
              settingsService.clearMusicFolderCache();
              mediaScannerService.scanLibrary();
          }
          if (expunge != null) {
              expunge();
          }
  
          command.setInterval(String.valueOf(settingsService.getIndexCreationInterval()));
          command.setHour(String.valueOf(settingsService.getIndexCreationHour()));
          command.setFastCache(settingsService.isFastCacheEnabled());
          command.setOrganizeByFolderStructure(settingsService.isOrganizeByFolderStructure());
          command.setScanning(mediaScannerService.isScanning());
          command.setMusicFolders(wrap(settingsService.getAllMusicFolders(true, true)));
          command.setNewMusicFolder(new MusicFolderSettingsCommand.MusicFolderInfo());
          command.setExcludePatternString(settingsService.getExcludePatternString());
          command.setIgnoreSymLinks(settingsService.getIgnoreSymLinks());
  
          model.addAttribute("command",command);
      }
  
  
      private synchronized void expunge() {
  
          MediaLibraryStatistics statistics = indexManager.getStatistics();
  
          /*
           * indexManager#expunge depends on DB delete flag.
           * For consistency, clean of DB and Lucene must run in one block.
           *
           * Lucene's writing is exclusive.
           * This process cannot be performed
           * while during scan or scan has never been performed.
           */
          if (statistics != null && !mediaScannerService.isScanning()) {
  
              // to be before dao#expunge
              LOG.debug("Cleaning search index...");
              indexManager.startIndexing();
              indexManager.expunge();
              indexManager.stopIndexing(statistics);
              LOG.debug("Search index cleanup complete.");
  
              // to be after indexManager#expunge
              LOG.debug("Cleaning database...");
              LOG.debug("Deleting non-present artists...");
              artistDao.expunge();
              LOG.debug("Deleting non-present albums...");
              albumDao.expunge();
              LOG.debug("Deleting non-present media files...");
              mediaFileDao.expunge();
              LOG.debug("Database cleanup complete.");
              mediaFileDao.checkpoint();
  
          } else {
              LOG.warn("Index hasn't been created yet or during scanning. Plese execute clean up after scan is completed.");
          }
      }
  
      private List<MusicFolderSettingsCommand.MusicFolderInfo> wrap(List<MusicFolder> musicFolders) {
          return musicFolders.stream().map(MusicFolderSettingsCommand.MusicFolderInfo::new).collect(Collectors.toCollection(ArrayList::new));
      }
  
      @PostMapping
      protected String onSubmit(@ModelAttribute("command") MusicFolderSettingsCommand command, RedirectAttributes redirectAttributes) {
  
          for (MusicFolderSettingsCommand.MusicFolderInfo musicFolderInfo : command.getMusicFolders()) {
              if (musicFolderInfo.isDelete()) {
                  settingsService.deleteMusicFolder(musicFolderInfo.getId());
              } else {
                  MusicFolder musicFolder = musicFolderInfo.toMusicFolder();
                  if (musicFolder != null) {
                      settingsService.updateMusicFolder(musicFolder);
                  }
              }
          }
  
          MusicFolder newMusicFolder = command.getNewMusicFolder().toMusicFolder();
          if (newMusicFolder != null) {
              settingsService.createMusicFolder(newMusicFolder);
          }
  
          settingsService.setIndexCreationInterval(Integer.parseInt(command.getInterval()));
          settingsService.setIndexCreationHour(Integer.parseInt(command.getHour()));
          settingsService.setFastCacheEnabled(command.isFastCache());
          settingsService.setOrganizeByFolderStructure(command.isOrganizeByFolderStructure());
          settingsService.setExcludePatternString(command.getExcludePatternString());
          settingsService.setIgnoreSymLinks(command.getIgnoreSymLinks());
          settingsService.save();
  
  
          redirectAttributes.addFlashAttribute("settings_toast", true);
          redirectAttributes.addFlashAttribute("settings_reload", true);
  
          mediaScannerService.schedule();
          return "redirect:musicFolderSettings.view";
      }
  
  }
  