X-Git-Url: https://git.pterodactylus.net/?p=Sone.git;a=blobdiff_plain;f=src%2Fmain%2Fkotlin%2Fnet%2Fpterodactylus%2Fsone%2Fcore%2FUpdatedSoneProcessor.kt;fp=src%2Fmain%2Fkotlin%2Fnet%2Fpterodactylus%2Fsone%2Fcore%2FUpdatedSoneProcessor.kt;h=28bac6d0cbc2e31cfeab3bb3644aa6c73e654212;hp=0000000000000000000000000000000000000000;hb=03cec6a6772c2d836d94864adddaf544cbe9d72f;hpb=6f1f26e3998cfef155b0cf59152827accea70d30

diff --git a/src/main/kotlin/net/pterodactylus/sone/core/UpdatedSoneProcessor.kt b/src/main/kotlin/net/pterodactylus/sone/core/UpdatedSoneProcessor.kt
new file mode 100644
index 0000000..28bac6d
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+++ b/src/main/kotlin/net/pterodactylus/sone/core/UpdatedSoneProcessor.kt
@@ -0,0 +1,70 @@
+package net.pterodactylus.sone.core
+
+import com.google.common.eventbus.*
+import com.google.inject.*
+import net.pterodactylus.sone.core.event.*
+import net.pterodactylus.sone.data.*
+import net.pterodactylus.sone.data.Sone.*
+import net.pterodactylus.sone.database.*
+import net.pterodactylus.sone.utils.*
+import net.pterodactylus.util.logging.*
+import javax.inject.Inject
+
+/**
+ * An `UpdatedSoneProcessor` is called to process a [Sone] after it has been
+ * downloaded from Freenet.
+ */
+@ImplementedBy(DefaultUpdateSoneProcessor::class)
+interface UpdatedSoneProcessor {
+
+	fun updateSone(sone: Sone)
+
+}
+
+abstract class BasicUpdateSoneProcessor(private val database: Database, private val eventBus: EventBus) :
+		UpdatedSoneProcessor {
+
+	private val logger = Logging.getLogger(UpdatedSoneProcessor::javaClass.name)!!
+
+	override fun updateSone(sone: Sone) {
+		val storedSone = database.getSone(sone.id) ?: return
+		if (!soneCanBeUpdated(storedSone, sone)) {
+			logger.fine("Downloaded Sone $sone can not update stored Sone $storedSone.")
+			return
+		}
+
+		SoneComparison(storedSone, sone).apply {
+			newPosts
+					.onEach { post -> if (post.time <= sone.followingTime) post.isKnown = true }
+					.mapNotNull { post -> post.isKnown.ifFalse { NewPostFoundEvent(post) } }
+					.forEach(eventBus::post)
+			removedPosts
+					.map { PostRemovedEvent(it) }
+					.forEach(eventBus::post)
+			newPostReplies
+					.onEach { postReply -> if (postReply.time <= sone.followingTime) postReply.isKnown = true }
+					.mapNotNull { postReply -> postReply.isKnown.ifFalse { NewPostReplyFoundEvent(postReply) } }
+					.forEach(eventBus::post)
+			removedPostReplies
+					.map { PostReplyRemovedEvent(it) }
+					.forEach(eventBus::post)
+		}
+		database.storeSone(sone)
+		sone.options = storedSone.options
+		sone.isKnown = storedSone.isKnown
+		sone.status = if (sone.time != 0L) SoneStatus.idle else SoneStatus.unknown
+	}
+
+	protected abstract fun soneCanBeUpdated(storedSone: Sone, newSone: Sone): Boolean
+
+	private val Sone.followingTime get() = database.getFollowingTime(id) ?: 0
+
+}
+
+class DefaultUpdateSoneProcessor @Inject constructor(database: Database, eventBus: EventBus) :
+		BasicUpdateSoneProcessor(database, eventBus) {
+
+	override fun soneCanBeUpdated(storedSone: Sone, newSone: Sone) =
+			newSone.time > storedSone.time
+
+}