From a62f2e44d0890eca1d17adba388292e84053e5cb Mon Sep 17 00:00:00 2001
From: Vitor Pamplona <vitor@vitorpamplona.com>
Date: Wed, 10 May 2023 14:02:38 -0400
Subject: [PATCH] Only calls invalidate if things change

---
 .../service/NostrSingleEventDataSource.kt     | 24 ++++++++++++-------
 .../service/NostrSingleUserDataSource.kt      | 12 ++++++----
 2 files changed, 24 insertions(+), 12 deletions(-)

diff --git a/app/src/main/java/com/vitorpamplona/amethyst/service/NostrSingleEventDataSource.kt b/app/src/main/java/com/vitorpamplona/amethyst/service/NostrSingleEventDataSource.kt
index 2e3123c31..e1b663965 100644
--- a/app/src/main/java/com/vitorpamplona/amethyst/service/NostrSingleEventDataSource.kt
+++ b/app/src/main/java/com/vitorpamplona/amethyst/service/NostrSingleEventDataSource.kt
@@ -152,22 +152,30 @@ object NostrSingleEventDataSource : NostrDataSource("SingleEventFeed") {
     }
 
     fun add(eventId: Note) {
-        eventsToWatch = eventsToWatch.plus(eventId)
-        invalidateFilters()
+        if (!eventsToWatch.contains(eventId)) {
+            eventsToWatch = eventsToWatch.plus(eventId)
+            invalidateFilters()
+        }
     }
 
     fun remove(eventId: Note) {
-        eventsToWatch = eventsToWatch.minus(eventId)
-        invalidateFilters()
+        if (eventsToWatch.contains(eventId)) {
+            eventsToWatch = eventsToWatch.minus(eventId)
+            invalidateFilters()
+        }
     }
 
     fun addAddress(aTag: Note) {
-        addressesToWatch = addressesToWatch.plus(aTag)
-        invalidateFilters()
+        if (!addressesToWatch.contains(aTag)) {
+            addressesToWatch = addressesToWatch.plus(aTag)
+            invalidateFilters()
+        }
     }
 
     fun removeAddress(aTag: Note) {
-        addressesToWatch = addressesToWatch.minus(aTag)
-        invalidateFilters()
+        if (addressesToWatch.contains(aTag)) {
+            addressesToWatch = addressesToWatch.minus(aTag)
+            invalidateFilters()
+        }
     }
 }
diff --git a/app/src/main/java/com/vitorpamplona/amethyst/service/NostrSingleUserDataSource.kt b/app/src/main/java/com/vitorpamplona/amethyst/service/NostrSingleUserDataSource.kt
index ba5457280..d6991c53f 100644
--- a/app/src/main/java/com/vitorpamplona/amethyst/service/NostrSingleUserDataSource.kt
+++ b/app/src/main/java/com/vitorpamplona/amethyst/service/NostrSingleUserDataSource.kt
@@ -64,12 +64,16 @@ object NostrSingleUserDataSource : NostrDataSource("SingleUserFeed") {
     }
 
     fun add(user: User) {
-        usersToWatch = usersToWatch.plus(user)
-        invalidateFilters()
+        if (!usersToWatch.contains(user)) {
+            usersToWatch = usersToWatch.plus(user)
+            invalidateFilters()
+        }
     }
 
     fun remove(user: User) {
-        usersToWatch = usersToWatch.minus(user)
-        invalidateFilters()
+        if (usersToWatch.contains(user)) {
+            usersToWatch = usersToWatch.minus(user)
+            invalidateFilters()
+        }
     }
 }