🔀 Merge branch 'release/v82'

[Sone.git] / src / main / java / net / pterodactylus / sone / freenet / wot / IdentityChangeDetector.kt

diff --git a/src/main/java/net/pterodactylus/sone/freenet/wot/IdentityChangeDetector.kt b/src/main/java/net/pterodactylus/sone/freenet/wot/IdentityChangeDetector.kt
deleted file mode 100644 (file)
index ffcafb3..0000000
--- a/src/main/java/net/pterodactylus/sone/freenet/wot/IdentityChangeDetector.kt
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * Sone - IdentityChangeDetector.kt - Copyright © 2013–2020 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.sone.freenet.wot
-
-/**
- * Detects changes between two lists of [Identity]s. The detector can find
- * added and removed identities, and for identities that exist in both list
- * their contexts and properties are checked for added, removed, or (in case of
- * properties) changed values.
- */
-class IdentityChangeDetector(oldIdentities: Collection<Identity>) {
-
-       private val oldIdentities: Map<String, Identity> = oldIdentities.associateBy { it.id }
-       var onNewIdentity: IdentityProcessor? = null
-       var onRemovedIdentity: IdentityProcessor? = null
-       var onChangedIdentity: IdentityProcessor? = null
-       var onUnchangedIdentity: IdentityProcessor? = null
-
-       fun detectChanges(newIdentities: Collection<Identity>) {
-               onRemovedIdentity.notify(oldIdentities.values.filter { it !in newIdentities })
-               onNewIdentity.notify(newIdentities.filter { it !in oldIdentities.values })
-               onChangedIdentity.notify(newIdentities.filter { it.id in oldIdentities }.filter { identityHasChanged(oldIdentities[it.id]!!, it) })
-               onUnchangedIdentity.notify(newIdentities.filter { it.id in oldIdentities }.filterNot { identityHasChanged(oldIdentities[it.id]!!, it) })
-       }
-
-       private fun identityHasChanged(oldIdentity: Identity, newIdentity: Identity?) =
-                       identityHasNewContexts(oldIdentity, newIdentity!!)
-                                       || identityHasRemovedContexts(oldIdentity, newIdentity)
-                                       || identityHasNewProperties(oldIdentity, newIdentity)
-                                       || identityHasRemovedProperties(oldIdentity, newIdentity)
-                                       || identityHasChangedProperties(oldIdentity, newIdentity)
-
-       private fun identityHasNewContexts(oldIdentity: Identity, newIdentity: Identity) =
-                       newIdentity.contexts.any { it !in oldIdentity.contexts }
-
-       private fun identityHasRemovedContexts(oldIdentity: Identity, newIdentity: Identity) =
-                       oldIdentity.contexts.any { it !in newIdentity.contexts }
-
-       private fun identityHasNewProperties(oldIdentity: Identity, newIdentity: Identity) =
-                       newIdentity.properties.keys.any { it !in oldIdentity.properties }
-
-       private fun identityHasRemovedProperties(oldIdentity: Identity, newIdentity: Identity) =
-                       oldIdentity.properties.keys.any { it !in newIdentity.properties }
-
-       private fun identityHasChangedProperties(oldIdentity: Identity, newIdentity: Identity) =
-                       oldIdentity.properties.entries.any { newIdentity.properties[it.key] != it.value }
-
-}
-
-typealias IdentityProcessor = (Identity) -> Unit
-
-private fun IdentityProcessor?.notify(identities: Iterable<Identity>) =
-               this?.let { identities.forEach(this::invoke) }