src/main/java/net/pterodactylus/rhynodge/triggers/NewEpisodeTrigger.java

   1 /*
   2  * Rhynodge - NewEpisodeTrigger.java - Copyright © 2013 David Roden
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.pterodactylus.rhynodge.triggers;
  19
  20 import static com.google.common.base.Preconditions.checkState;
  21
  22 import java.util.Collection;
  23 import java.util.Map;
  24 import java.util.Map.Entry;
  25
  26 import net.pterodactylus.rhynodge.Reaction;
  27 import net.pterodactylus.rhynodge.State;
  28 import net.pterodactylus.rhynodge.Trigger;
  29 import net.pterodactylus.rhynodge.output.DefaultOutput;
  30 import net.pterodactylus.rhynodge.output.Output;
  31 import net.pterodactylus.rhynodge.states.EpisodeState;
  32 import net.pterodactylus.rhynodge.states.EpisodeState.Episode;
  33 import net.pterodactylus.rhynodge.states.TorrentState.TorrentFile;
  34
  35 import org.apache.commons.lang3.StringEscapeUtils;
  36
  37 import com.google.common.base.Function;
  38 import com.google.common.collect.FluentIterable;
  39 import com.google.common.collect.ImmutableMap;
  40 import com.google.common.collect.Lists;
  41 import com.google.common.collect.Maps;
  42 import com.google.common.collect.Ordering;
  43 import com.google.common.collect.Sets;
  44
  45 /**
  46  * {@link Trigger} implementation that compares two {@link EpisodeState}s for
  47  * new and changed {@link Episode}s.
  48  *
  49  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  50  */
  51 public class NewEpisodeTrigger implements Trigger {
  52
  53         /** All episodes. */
  54         private final Collection<Episode> allEpisodes = Sets.newHashSet();
  55
  56         /** All new episodes. */
  57         private final Collection<Episode> newEpisodes = Sets.newHashSet();
  58
  59         /** All changed episodes. */
  60         private final Collection<Episode> changedEpisodes = Sets.newHashSet();
  61
  62         /** All new torrent files. */
  63         private final Collection<TorrentFile> newTorrentFiles = Sets.newHashSet();
  64
  65         //
  66         // TRIGGER METHODS
  67         //
  68
  69         /**
  70          * {@inheritDocs}
  71          */
  72         @Override
  73         public State mergeStates(State previousState, State currentState) {
  74                 checkState(currentState instanceof EpisodeState, "currentState is not a EpisodeState but a %s", currentState.getClass().getName());
  75                 checkState(previousState instanceof EpisodeState, "previousState is not a EpisodeState but a %s", currentState.getClass().getName());
  76                 newEpisodes.clear();
  77                 changedEpisodes.clear();
  78                 this.allEpisodes.clear();
  79                 newTorrentFiles.clear();
  80                 Map<Episode, Episode> allEpisodes = Maps.newHashMap(FluentIterable.from(((EpisodeState) previousState).episodes()).toMap(new Function<Episode, Episode>() {
  81
  82                         @Override
  83                         public Episode apply(Episode episode) {
  84                                 return episode;
  85                         }
  86                 }));
  87                 for (Episode episode : ((EpisodeState) currentState).episodes()) {
  88                         if (!allEpisodes.containsKey(episode)) {
  89                                 allEpisodes.put(episode, episode);
  90                                 newEpisodes.add(episode);
  91                         }
  92                         for (TorrentFile torrentFile : Lists.newArrayList(episode.torrentFiles())) {
  93                                 int oldSize = allEpisodes.get(episode).torrentFiles().size();
  94                                 allEpisodes.get(episode).addTorrentFile(torrentFile);
  95                                 int newSize = allEpisodes.get(episode).torrentFiles().size();
  96                                 if (oldSize != newSize) {
  97                                         newTorrentFiles.add(torrentFile);
  98                                 }
  99                                 if (!newEpisodes.contains(episode) && (oldSize != newSize)) {
 100                                         changedEpisodes.add(episode);
 101                                 }
 102                         }
 103                 }
 104                 this.allEpisodes.addAll(allEpisodes.values());
 105                 return new EpisodeState(this.allEpisodes);
 106         }
 107
 108         /**
 109          * {@inheritDoc}
 110          */
 111         @Override
 112         public boolean triggers() {
 113                 return !newEpisodes.isEmpty() || !changedEpisodes.isEmpty();
 114         }
 115
 116         /**
 117          * {@inheritDoc}
 118          */
 119         @Override
 120         public Output output(Reaction reaction) {
 121                 String summary;
 122                 if (!newEpisodes.isEmpty()) {
 123                         if (!changedEpisodes.isEmpty()) {
 124                                 summary = String.format("%d new and %d changed Torrent(s) for “%s!”", newEpisodes.size(), changedEpisodes.size(), reaction.name());
 125                         } else {
 126                                 summary = String.format("%d new Torrent(s) for “%s!”", newEpisodes.size(), reaction.name());
 127                         }
 128                 } else {
 129                         summary = String.format("%d changed Torrent(s) for “%s!”", changedEpisodes.size(), reaction.name());
 130                 }
 131                 DefaultOutput output = new DefaultOutput(summary);
 132                 output.addText("text/plain", generatePlainText(reaction, newEpisodes, changedEpisodes, allEpisodes));
 133                 output.addText("text/html", generateHtmlText(reaction, newEpisodes, changedEpisodes, allEpisodes));
 134                 return output;
 135         }
 136
 137         //
 138         // STATIC METHODS
 139         //
 140
 141         /**
 142          * Generates the plain text trigger output.
 143          *
 144          * @param reaction
 145          *            The reaction that was triggered
 146          * @param newEpisodes
 147          *            The new episodes
 148          * @param changedEpisodes
 149          *            The changed episodes
 150          * @param allEpisodes
 151          *            All episodes
 152          * @return The plain text output
 153          */
 154         private static String generatePlainText(Reaction reaction, Collection<Episode> newEpisodes, Collection<Episode> changedEpisodes, Collection<Episode> allEpisodes) {
 155                 StringBuilder stringBuilder = new StringBuilder();
 156                 if (!newEpisodes.isEmpty()) {
 157                         stringBuilder.append(reaction.name()).append(" - New Episodes\n\n");
 158                         for (Episode episode : newEpisodes) {
 159                                 stringBuilder.append("- ").append(episode.identifier()).append("\n");
 160                                 for (TorrentFile torrentFile : episode) {
 161                                         stringBuilder.append("  - ").append(torrentFile.name()).append(", ").append(torrentFile.size()).append("\n");
 162                                         if ((torrentFile.magnetUri() != null) && (torrentFile.magnetUri().length() > 0)) {
 163                                                 stringBuilder.append("    Magnet: ").append(torrentFile.magnetUri()).append("\n");
 164                                         }
 165                                         if ((torrentFile.downloadUri() != null) && (torrentFile.downloadUri().length() > 0)) {
 166                                                 stringBuilder.append("    Download: ").append(torrentFile.downloadUri()).append("\n");
 167                                         }
 168                                 }
 169                         }
 170                 }
 171                 if (!changedEpisodes.isEmpty()) {
 172                         stringBuilder.append(reaction.name()).append(" - Changed Episodes\n\n");
 173                         for (Episode episode : changedEpisodes) {
 174                                 stringBuilder.append("- ").append(episode.identifier()).append("\n");
 175                                 for (TorrentFile torrentFile : episode) {
 176                                         stringBuilder.append("  - ").append(torrentFile.name()).append(", ").append(torrentFile.size()).append("\n");
 177                                         if ((torrentFile.magnetUri() != null) && (torrentFile.magnetUri().length() > 0)) {
 178                                                 stringBuilder.append("    Magnet: ").append(torrentFile.magnetUri()).append("\n");
 179                                         }
 180                                         if ((torrentFile.downloadUri() != null) && (torrentFile.downloadUri().length() > 0)) {
 181                                                 stringBuilder.append("    Download: ").append(torrentFile.downloadUri()).append("\n");
 182                                         }
 183                                 }
 184                         }
 185                 }
 186                 /* list all known episodes. */
 187                 stringBuilder.append(reaction.name()).append(" - All Known Episodes\n\n");
 188                 ImmutableMap<Integer, Collection<Episode>> episodesBySeason = FluentIterable.from(allEpisodes).index(new Function<Episode, Integer>() {
 189
 190                         @Override
 191                         public Integer apply(Episode episode) {
 192                                 return episode.season();
 193                         }
 194                 }).asMap();
 195                 for (Entry<Integer, Collection<Episode>> seasonEntry : episodesBySeason.entrySet()) {
 196                         stringBuilder.append("  Season ").append(seasonEntry.getKey()).append("\n\n");
 197                         for (Episode episode : Ordering.natural().sortedCopy(seasonEntry.getValue())) {
 198                                 stringBuilder.append("    Episode ").append(episode.episode()).append("\n");
 199                                 for (TorrentFile torrentFile : episode) {
 200                                         stringBuilder.append("      Size: ").append(torrentFile.size());
 201                                         stringBuilder.append(" in ").append(torrentFile.fileCount()).append(" file(s): ");
 202                                         stringBuilder.append(torrentFile.magnetUri());
 203                                 }
 204                         }
 205                 }
 206
 207                 return stringBuilder.toString();
 208         }
 209
 210         /**
 211          * Generates the HTML trigger output.
 212          *
 213          * @param reaction
 214          *            The reaction that was triggered
 215          * @param newEpisodes
 216          *            The new episodes
 217          * @param changedEpisodes
 218          *            The changed episodes
 219          * @param allEpisodes
 220          *            All episodes
 221          * @return The HTML output
 222          */
 223         private static String generateHtmlText(Reaction reaction, Collection<Episode> newEpisodes, Collection<Episode> changedEpisodes, Collection<Episode> allEpisodes) {
 224                 StringBuilder htmlBuilder = new StringBuilder();
 225                 htmlBuilder.append("<html><body>\n");
 226                 htmlBuilder.append("<h1>").append(StringEscapeUtils.escapeHtml4(reaction.name())).append("</h1>\n");
 227                 if (!newEpisodes.isEmpty()) {
 228                         htmlBuilder.append("<h2>New Episodes</h2>\n");
 229                         htmlBuilder.append("<ul>\n");
 230                         for (Episode episode : newEpisodes) {
 231                                 htmlBuilder.append("<li>Season ").append(episode.season()).append(", Episode ").append(episode.episode()).append("</li>\n");
 232                                 htmlBuilder.append("<ul>\n");
 233                                 for (TorrentFile torrentFile : episode) {
 234                                         htmlBuilder.append("<li>").append(StringEscapeUtils.escapeHtml4(torrentFile.name())).append("</li>\n");
 235                                         htmlBuilder.append("<div>");
 236                                         htmlBuilder.append("<strong>").append(StringEscapeUtils.escapeHtml4(torrentFile.size())).append("</strong>, ");
 237                                         htmlBuilder.append("<strong>").append(torrentFile.fileCount()).append("</strong> file(s), ");
 238                                         htmlBuilder.append("<strong>").append(torrentFile.seedCount()).append("</strong> seed(s), ");
 239                                         htmlBuilder.append("<strong>").append(torrentFile.leechCount()).append("</strong> leecher(s)</div>\n");
 240                                         htmlBuilder.append("<div>");
 241                                         if ((torrentFile.magnetUri() != null) && (torrentFile.magnetUri().length() > 0)) {
 242                                                 htmlBuilder.append("<a href=\"").append(StringEscapeUtils.escapeHtml4(torrentFile.magnetUri())).append("\">Magnet</a> ");
 243                                         }
 244                                         if ((torrentFile.downloadUri() != null) && (torrentFile.downloadUri().length() > 0)) {
 245                                                 htmlBuilder.append("<a href=\"").append(StringEscapeUtils.escapeHtml4(torrentFile.downloadUri())).append("\">Download</a>");
 246                                         }
 247                                         htmlBuilder.append("</div>\n");
 248                                 }
 249                                 htmlBuilder.append("</ul>\n");
 250                         }
 251                         htmlBuilder.append("</ul>\n");
 252                 }
 253                 if (!changedEpisodes.isEmpty()) {
 254                         htmlBuilder.append("<h2>Changed Episodes</h2>\n");
 255                         htmlBuilder.append("<ul>\n");
 256                         for (Episode episode : changedEpisodes) {
 257                                 htmlBuilder.append("<li>Season ").append(episode.season()).append(", Episode ").append(episode.episode()).append("</li>\n");
 258                                 htmlBuilder.append("<ul>\n");
 259                                 for (TorrentFile torrentFile : episode) {
 260                                         htmlBuilder.append("<li>").append(StringEscapeUtils.escapeHtml4(torrentFile.name())).append("</li>\n");
 261                                         htmlBuilder.append("<div>");
 262                                         htmlBuilder.append("<strong>").append(StringEscapeUtils.escapeHtml4(torrentFile.size())).append("</strong>, ");
 263                                         htmlBuilder.append("<strong>").append(torrentFile.fileCount()).append("</strong> file(s), ");
 264                                         htmlBuilder.append("<strong>").append(torrentFile.seedCount()).append("</strong> seed(s), ");
 265                                         htmlBuilder.append("<strong>").append(torrentFile.leechCount()).append("</strong> leecher(s)</div>\n");
 266                                         htmlBuilder.append("<div>");
 267                                         if ((torrentFile.magnetUri() != null) && (torrentFile.magnetUri().length() > 0)) {
 268                                                 htmlBuilder.append("<a href=\"").append(StringEscapeUtils.escapeHtml4(torrentFile.magnetUri())).append("\">Magnet</a> ");
 269                                         }
 270                                         if ((torrentFile.downloadUri() != null) && (torrentFile.downloadUri().length() > 0)) {
 271                                                 htmlBuilder.append("<a href=\"").append(StringEscapeUtils.escapeHtml4(torrentFile.downloadUri())).append("\">Download</a>");
 272                                         }
 273                                         htmlBuilder.append("</div>\n");
 274                                 }
 275                                 htmlBuilder.append("</ul>\n");
 276                         }
 277                         htmlBuilder.append("</ul>\n");
 278                 }
 279                 htmlBuilder.append("</body></html>\n");
 280                 return htmlBuilder.toString();
 281         }
 282
 283 }