🚧 Add detector for mentioned local Sones

[Sone.git] / src / main / kotlin / net / pterodactylus / sone / text / SoneMentionDetector.kt

diff --git a/src/main/kotlin/net/pterodactylus/sone/text/SoneMentionDetector.kt b/src/main/kotlin/net/pterodactylus/sone/text/SoneMentionDetector.kt
new file mode 100644 (file)
index 0000000..7dd8285
--- /dev/null
+++ b/src/main/kotlin/net/pterodactylus/sone/text/SoneMentionDetector.kt
@@ -0,0 +1,44 @@
+/**
+ * Sone - SoneMentionDetector.kt - Copyright © 2019 David ‘Bombe’ 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.sone.text
+
+import com.google.common.eventbus.*
+import net.pterodactylus.sone.core.event.*
+import net.pterodactylus.sone.utils.*
+import javax.inject.*
+
+/**
+ * Listens to [NewPostFoundEvent]s and [NewPostReplyFoundEvent], parses the
+ * texts and emits a [LocalSoneMentionedInPostEvent] if a [SoneTextParser]
+ * finds a [SonePart] that points to a local [Sone].
+ */
+class SoneMentionDetector @Inject constructor(private val eventBus: EventBus, private val soneTextParser: SoneTextParser) {
+
+       @Subscribe
+       fun onNewPost(newPostFoundEvent: NewPostFoundEvent) {
+               newPostFoundEvent.post.let { post ->
+                       post.sone.isLocal.onFalse {
+                               val parts = soneTextParser.parse(post.text, null)
+                               if (parts.filterIsInstance<SonePart>().any { it.sone.isLocal }) {
+                                       eventBus.post(LocalSoneMentionedInPostEvent(post))
+                               }
+                       }
+               }
+       }
+
+}