From dc61c5a8e46f27db8d13b175798e0d14cd07153c Mon Sep 17 00:00:00 2001
From: Vitor Pamplona <vitor@vitorpamplona.com>
Date: Thu, 10 Jul 2025 18:08:32 -0400
Subject: [PATCH] Keeps cache of the content inside Public chat forums

---
 .../admin/ChannelCreateEvent.kt               | 32 +++++++++++++++----
 .../admin/ChannelMetadataEvent.kt             | 31 ++++++++++++++----
 2 files changed, 49 insertions(+), 14 deletions(-)

diff --git a/quartz/src/main/java/com/vitorpamplona/quartz/nip28PublicChat/admin/ChannelCreateEvent.kt b/quartz/src/main/java/com/vitorpamplona/quartz/nip28PublicChat/admin/ChannelCreateEvent.kt
index 5953c078a..b6c1e6f95 100644
--- a/quartz/src/main/java/com/vitorpamplona/quartz/nip28PublicChat/admin/ChannelCreateEvent.kt
+++ b/quartz/src/main/java/com/vitorpamplona/quartz/nip28PublicChat/admin/ChannelCreateEvent.kt
@@ -22,11 +22,13 @@ package com.vitorpamplona.quartz.nip28PublicChat.admin
 
 import android.R.attr.data
 import android.util.Log
+import android.util.Log.e
 import androidx.compose.runtime.Immutable
 import com.fasterxml.jackson.core.JsonParseException
 import com.vitorpamplona.quartz.nip01Core.core.Event
 import com.vitorpamplona.quartz.nip01Core.core.HexKey
 import com.vitorpamplona.quartz.nip01Core.core.TagArrayBuilder
+import com.vitorpamplona.quartz.nip01Core.core.has
 import com.vitorpamplona.quartz.nip01Core.hints.EventHintProvider
 import com.vitorpamplona.quartz.nip01Core.hints.types.EventIdHint
 import com.vitorpamplona.quartz.nip01Core.relay.normalizer.NormalizedRelayUrl
@@ -46,17 +48,33 @@ class ChannelCreateEvent(
     sig: HexKey,
 ) : Event(id, pubKey, createdAt, KIND, tags, content, sig),
     EventHintProvider {
+    @Transient
+    var cache: ChannelDataNorm? = null
+
     override fun eventHints() = channelInfo().relays?.map { EventIdHint(id, it) } ?: emptyList()
 
     override fun linkedEventIds() = listOf(id)
 
-    fun channelInfo(): ChannelDataNorm =
-        try {
-            ChannelData.parse(content)?.normalize() ?: ChannelDataNorm()
-        } catch (e: JsonParseException) {
-            Log.w("ChannelCreateEvent", "Failure to parse ${this.toJson()}", e)
-            ChannelDataNorm()
-        }
+    fun isEncrypted() = tags.any { it.has(1) && it[0] == "encrypted" && it[1] == "true" }
+
+    fun channelInfo(): ChannelDataNorm {
+        cache?.let { return it }
+
+        val newInfo =
+            try {
+                if (isEncrypted()) {
+                    ChannelDataNorm()
+                } else {
+                    ChannelData.parse(content)?.normalize() ?: ChannelDataNorm()
+                }
+            } catch (e: JsonParseException) {
+                Log.w("ChannelCreateEvent", "Failure to parse ${this.toJson()}", e)
+                ChannelDataNorm()
+            }
+
+        cache = newInfo
+        return newInfo
+    }
 
     companion object {
         const val KIND = 40
diff --git a/quartz/src/main/java/com/vitorpamplona/quartz/nip28PublicChat/admin/ChannelMetadataEvent.kt b/quartz/src/main/java/com/vitorpamplona/quartz/nip28PublicChat/admin/ChannelMetadataEvent.kt
index 6446edcef..526214f20 100644
--- a/quartz/src/main/java/com/vitorpamplona/quartz/nip28PublicChat/admin/ChannelMetadataEvent.kt
+++ b/quartz/src/main/java/com/vitorpamplona/quartz/nip28PublicChat/admin/ChannelMetadataEvent.kt
@@ -25,6 +25,7 @@ import androidx.compose.runtime.Immutable
 import com.fasterxml.jackson.core.JsonParseException
 import com.vitorpamplona.quartz.nip01Core.core.HexKey
 import com.vitorpamplona.quartz.nip01Core.core.TagArrayBuilder
+import com.vitorpamplona.quartz.nip01Core.core.has
 import com.vitorpamplona.quartz.nip01Core.hints.EventHintBundle
 import com.vitorpamplona.quartz.nip01Core.hints.EventHintProvider
 import com.vitorpamplona.quartz.nip01Core.hints.types.EventIdHint
@@ -48,6 +49,9 @@ class ChannelMetadataEvent(
     sig: HexKey,
 ) : BasePublicChatEvent(id, pubKey, createdAt, KIND, tags, content, sig),
     EventHintProvider {
+    @Transient
+    var cache: ChannelDataNorm? = null
+
     override fun eventHints() =
         channelInfo().relays?.mapNotNull { relay ->
             channelId()?.let { EventIdHint(it, relay) }
@@ -55,13 +59,26 @@ class ChannelMetadataEvent(
 
     override fun linkedEventIds() = channelId()?.let { listOf(it) } ?: emptyList()
 
-    fun channelInfo(): ChannelDataNorm =
-        try {
-            ChannelData.parse(content)?.normalize() ?: ChannelDataNorm()
-        } catch (e: JsonParseException) {
-            Log.w("ChannelCreateEvent", "Failure to parse ${this.toJson()}", e)
-            ChannelDataNorm()
-        }
+    fun isEncrypted() = tags.any { it.has(1) && it[0] == "encrypted" && it[1] == "true" }
+
+    fun channelInfo(): ChannelDataNorm {
+        cache?.let { return it }
+
+        val newInfo =
+            try {
+                if (isEncrypted()) {
+                    ChannelDataNorm()
+                } else {
+                    ChannelData.parse(content)?.normalize() ?: ChannelDataNorm()
+                }
+            } catch (e: JsonParseException) {
+                Log.w("ChannelCreateEvent", "Failure to parse ${this.toJson()}", e)
+                ChannelDataNorm()
+            }
+
+        cache = newInfo
+        return newInfo
+    }
 
     companion object {
         const val KIND = 41