Keeps cache of the content inside Public chat forums

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
@@ -46,18 +48,34 @@ 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 =
+    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
 

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) }
@@ -55,14 +59,27 @@ class ChannelMetadataEvent(
 
     override fun linkedEventIds() = channelId()?.let { listOf(it) } ?: emptyList()
 
-    fun channelInfo(): 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
         const val ALT = "This is a public chat definition update"