Rename project to “Rhynodge.”

[rhynodge.git] / src / main / java / net / pterodactylus / rhynodge / triggers / NewTorrentTrigger.java

diff --git a/src/main/java/net/pterodactylus/rhynodge/triggers/NewTorrentTrigger.java b/src/main/java/net/pterodactylus/rhynodge/triggers/NewTorrentTrigger.java
new file mode 100644 (file)
index 0000000..a21a8d6
--- /dev/null
+++ b/src/main/java/net/pterodactylus/rhynodge/triggers/NewTorrentTrigger.java
@@ -0,0 +1,130 @@
+/*
+ * Rhynodge - NewTorrentTrigger.java - Copyright © 2013 David Roden
+ *
+ * This program 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.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.pterodactylus.rhynodge.triggers;
+
+import static com.google.common.base.Preconditions.checkState;
+
+import java.util.List;
+
+import net.pterodactylus.rhynodge.Reaction;
+import net.pterodactylus.rhynodge.State;
+import net.pterodactylus.rhynodge.Trigger;
+import net.pterodactylus.rhynodge.output.DefaultOutput;
+import net.pterodactylus.rhynodge.output.Output;
+import net.pterodactylus.rhynodge.states.TorrentState;
+import net.pterodactylus.rhynodge.states.TorrentState.TorrentFile;
+
+import org.apache.commons.lang3.StringEscapeUtils;
+
+import com.google.common.collect.Lists;
+
+/**
+ * {@link Trigger} implementation that is triggered by {@link TorrentFile}s that
+ * appear in the current {@link TorrentState} but not in the previous one.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public class NewTorrentTrigger implements Trigger {
+
+       /** The newly detected torrent files. */
+       private List<TorrentFile> torrentFiles = Lists.newArrayList();
+
+       //
+       // TRIGGER METHODS
+       //
+
+       /**
+        * {@inheritDoc}
+        */
+       @Override
+       public boolean triggers(State currentState, State previousState) {
+               checkState(currentState instanceof TorrentState, "currentState is not a TorrentState but a %s", currentState.getClass().getName());
+               checkState(previousState instanceof TorrentState, "previousState is not a TorrentState but a %s", currentState.getClass().getName());
+               TorrentState currentTorrentState = (TorrentState) currentState;
+               TorrentState previousTorrentState = (TorrentState) previousState;
+               torrentFiles.clear();
+               for (TorrentFile torrentFile : currentTorrentState) {
+                       torrentFiles.add(torrentFile);
+               }
+               for (TorrentFile torrentFile : previousTorrentState) {
+                       torrentFiles.remove(torrentFile);
+               }
+               return !torrentFiles.isEmpty();
+       }
+
+       /**
+        * {@inheritDoc}
+        */
+       @Override
+       public Output output(Reaction reaction) {
+               DefaultOutput output = new DefaultOutput(String.format("Found %d new Torrent(s) for “%s!”", torrentFiles.size(), reaction.name()));
+               output.addText("text/plain", getPlainTextList(torrentFiles));
+               output.addText("text/html", getHtmlTextList(torrentFiles));
+               return output;
+       }
+
+       //
+       // STATIC METHODS
+       //
+
+       /**
+        * Generates a plain text list of torrent files.
+        *
+        * @param torrentFiles
+        *            The torrent files to list
+        * @return The generated plain text
+        */
+       private static String getPlainTextList(List<TorrentFile> torrentFiles) {
+               StringBuilder plainText = new StringBuilder();
+               plainText.append("New Torrents:\n\n");
+               for (TorrentFile torrentFile : torrentFiles) {
+                       plainText.append(torrentFile.name()).append('\n');
+                       plainText.append('\t').append(torrentFile.size()).append(" in ").append(torrentFile.fileCount()).append(" file(s)\n");
+                       plainText.append('\t').append(torrentFile.seedCount()).append(" seed(s), ").append(torrentFile.leechCount()).append(" leecher(s)\n");
+                       plainText.append('\t').append(torrentFile.magnetUri()).append('\n');
+                       plainText.append('\t').append(torrentFile.downloadUri()).append('\n');
+                       plainText.append('\n');
+               }
+               return plainText.toString();
+       }
+
+       /**
+        * Generates an HTML list of the given torrent files.
+        *
+        * @param torrentFiles
+        *            The torrent files to list
+        * @return The generated HTML
+        */
+       private static String getHtmlTextList(List<TorrentFile> torrentFiles) {
+               StringBuilder htmlText = new StringBuilder();
+               htmlText.append("<html><body>\n");
+               htmlText.append("<h1>New Torrents</h1>\n");
+               htmlText.append("<ul>\n");
+               for (TorrentFile torrentFile : torrentFiles) {
+                       htmlText.append("<li><strong>").append(StringEscapeUtils.escapeHtml4(torrentFile.name())).append("</strong></li>");
+                       htmlText.append("<div>Size: <strong>").append(StringEscapeUtils.escapeHtml4(torrentFile.size())).append("</strong> in <strong>").append(torrentFile.fileCount()).append("</strong> file(s)</div>");
+                       htmlText.append("<div><strong>").append(torrentFile.seedCount()).append("</strong> seed(s), <strong>").append(torrentFile.leechCount()).append("</strong> leecher(s)</div>");
+                       htmlText.append(String.format("<div><a href=\"%s\">Magnet URI</a></div>", StringEscapeUtils.escapeHtml4(torrentFile.magnetUri())));
+                       htmlText.append(String.format("<div><a href=\"%s\">Download URI</a></div>", StringEscapeUtils.escapeHtml4(torrentFile.downloadUri())));
+               }
+               htmlText.append("</ul>\n");
+               htmlText.append("</body></html>\n");
+               return htmlText.toString();
+       }
+
+}