Merge pull request #1483 from davotoula/reduce-sonar-code-quality-warnings

Reduce sonar code quality warnings

amethyst/src/main/java/com/vitorpamplona/amethyst/DebugUtils.kt

@@ -33,34 +33,32 @@ import kotlin.time.measureTimedValue
 @Suppress("SENSELESS_COMPARISON")
 val isDebug = BuildConfig.DEBUG || BuildConfig.BUILD_TYPE == "benchmark"
 
-fun debugState(context: Context) {
-    // Amethyst.instance.client
-    //    .allSubscriptions()
-    //    .forEach { Log.d("STATE DUMP", "${it.key} ${it.value.filters.joinToString { it.filter.toJson() }}") }
+private const val STATE_DUMP_TAG = "STATE DUMP"
 
+fun debugState(context: Context) {
     val totalMemoryMb = Runtime.getRuntime().totalMemory() / (1024 * 1024)
     val freeMemoryMb = Runtime.getRuntime().freeMemory() / (1024 * 1024)
     val maxMemoryMb = Runtime.getRuntime().maxMemory() / (1024 * 1024)
 
     val jvmHeapAllocatedMb = totalMemoryMb - freeMemoryMb
 
-    Log.d("STATE DUMP", "Total Heap Allocated: $jvmHeapAllocatedMb/$maxMemoryMb MB")
+    Log.d(STATE_DUMP_TAG, "Total Heap Allocated: $jvmHeapAllocatedMb/$maxMemoryMb MB")
 
     val nativeHeap = Debug.getNativeHeapAllocatedSize() / (1024 * 1024)
     val maxNative = Debug.getNativeHeapSize() / (1024 * 1024)
 
-    Log.d("STATE DUMP", "Total Native Heap Allocated: $nativeHeap/$maxNative MB")
+    Log.d(STATE_DUMP_TAG, "Total Native Heap Allocated: $nativeHeap/$maxNative MB")
 
     val activityManager: ActivityManager? = context.getSystemService()
     if (activityManager != null) {
         val isLargeHeap = (context.applicationInfo.flags and ApplicationInfo.FLAG_LARGE_HEAP) != 0
         val memClass = if (isLargeHeap) activityManager.largeMemoryClass else activityManager.memoryClass
 
-        Log.d("STATE DUMP", "Memory Class $memClass MB (largeHeap $isLargeHeap)")
+        Log.d(STATE_DUMP_TAG, "Memory Class $memClass MB (largeHeap $isLargeHeap)")
     }
 
     Log.d(
-        "STATE DUMP",
+        STATE_DUMP_TAG,
         "Connected Relays: " +
             Amethyst.instance.client
                 .relayStatusFlow()
@@ -71,16 +69,16 @@ fun debugState(context: Context) {
     )
 
     Log.d(
-        "STATE DUMP",
+        STATE_DUMP_TAG,
         "Image Disk Cache ${(Amethyst.instance.diskCache.size) / (1024 * 1024)}/${(Amethyst.instance.diskCache.maxSize) / (1024 * 1024)} MB",
     )
     Log.d(
-        "STATE DUMP",
+        STATE_DUMP_TAG,
         "Image Memory Cache ${(Amethyst.instance.memoryCache.size) / (1024 * 1024)}/${(Amethyst.instance.memoryCache.maxSize) / (1024 * 1024)} MB",
     )
 
     Log.d(
-        "STATE DUMP",
+        STATE_DUMP_TAG,
         "Notes: " +
             LocalCache.notes.filter { _, it -> it.flowSet != null }.size +
             " / " +
@@ -89,7 +87,7 @@ fun debugState(context: Context) {
             LocalCache.notes.size(),
     )
     Log.d(
-        "STATE DUMP",
+        STATE_DUMP_TAG,
         "Addressables: " +
             LocalCache.addressables.filter { _, it -> it.flowSet != null }.size +
             " / " +
@@ -98,7 +96,7 @@ fun debugState(context: Context) {
             LocalCache.addressables.size(),
     )
     Log.d(
-        "STATE DUMP",
+        STATE_DUMP_TAG,
         "Users: " +
             LocalCache.users.filter { _, it -> it.flowSet != null }.size +
             " / " +
@@ -107,7 +105,7 @@ fun debugState(context: Context) {
             LocalCache.users.size(),
     )
     Log.d(
-        "STATE DUMP",
+        STATE_DUMP_TAG,
         "Public Chat Channels: " +
             LocalCache.publicChatChannels.filter { _, it -> it.flowSet != null }.size +
             " / " +
@@ -116,7 +114,7 @@ fun debugState(context: Context) {
             LocalCache.publicChatChannels.values().sumOf { it.notes.size() },
     )
     Log.d(
-        "STATE DUMP",
+        STATE_DUMP_TAG,
         "Live Chat Channels: " +
             LocalCache.liveChatChannels.filter { _, it -> it.flowSet != null }.size +
             " / " +
@@ -125,7 +123,7 @@ fun debugState(context: Context) {
             LocalCache.liveChatChannels.values().sumOf { it.notes.size() },
     )
     Log.d(
-        "STATE DUMP",
+        STATE_DUMP_TAG,
         "Ephemeral Chat Channels: " +
             LocalCache.ephemeralChannels.filter { _, it -> it.flowSet != null }.size +
             " / " +
@@ -135,7 +133,7 @@ fun debugState(context: Context) {
     )
     LocalCache.chatroomList.forEach { key, room ->
         Log.d(
-            "STATE DUMP",
+            STATE_DUMP_TAG,
             "Private Chats $key: " +
                 room.rooms.size() +
                 " / " +
@@ -143,12 +141,12 @@ fun debugState(context: Context) {
         )
     }
     Log.d(
-        "STATE DUMP",
+        STATE_DUMP_TAG,
         "Deletion Events: " +
             LocalCache.deletionIndex.size(),
     )
     Log.d(
-        "STATE DUMP",
+        STATE_DUMP_TAG,
         "Observable Events: " +
             LocalCache.observablesByKindAndETag.size +
             " / " +
@@ -156,13 +154,13 @@ fun debugState(context: Context) {
     )
 
     Log.d(
-        "STATE DUMP",
+        STATE_DUMP_TAG,
         "Spam: " +
             LocalCache.antiSpam.spamMessages.size() + " / " + LocalCache.antiSpam.recentEventIds.size() + " / " + LocalCache.antiSpam.recentAddressables.size(),
     )
 
     Log.d(
-        "STATE DUMP",
+        STATE_DUMP_TAG,
         "Memory used by Events: " +
             LocalCache.notes.sumOf { _, note -> note.event?.countMemory() ?: 0 } / (1024 * 1024) +
             " MB",
@@ -179,10 +177,10 @@ fun debugState(context: Context) {
             .sumByGroup(groupMap = { _, it -> it.event?.kind }, sumOf = { _, it -> it.event?.countMemory()?.toLong() ?: 0L })
 
     qttNotes.toList().sortedByDescending { bytesNotes[it.first] }.forEach { (kind, qtt) ->
-        Log.d("STATE DUMP", "Kind ${kind.toString().padStart(5,' ')}:\t${qtt.toString().padStart(6,' ')} elements\t${bytesNotes[kind]?.div((1024 * 1024))}MB ")
+        Log.d(STATE_DUMP_TAG, "Kind ${kind.toString().padStart(5,' ')}:\t${qtt.toString().padStart(6,' ')} elements\t${bytesNotes[kind]?.div((1024 * 1024))}MB ")
     }
     qttAddressables.toList().sortedByDescending { bytesNotes[it.first] }.forEach { (kind, qtt) ->
-        Log.d("STATE DUMP", "Kind ${kind.toString().padStart(5,' ')}:\t${qtt.toString().padStart(6,' ')} elements\t${bytesAddressables[kind]?.div((1024 * 1024))}MB ")
+        Log.d(STATE_DUMP_TAG, "Kind ${kind.toString().padStart(5,' ')}:\t${qtt.toString().padStart(6,' ')} elements\t${bytesAddressables[kind]?.div((1024 * 1024))}MB ")
     }
 }
 

amethyst/src/main/java/com/vitorpamplona/amethyst/model/preferences/AccountPreferenceStores.kt

@@ -75,8 +75,9 @@ class AccountPreferenceStores(
             )
         }
 
-    fun removeAccount(npub: String) {
-        file(npub).delete()
+    fun removeAccount(npub: String): Boolean {
+        val deleted = file(npub).delete()
         storeCache.remove(npub)
+        return deleted
     }
 }

amethyst/src/main/java/com/vitorpamplona/amethyst/model/preferences/AccountSecretsEncryptedStores.kt

@@ -69,8 +69,9 @@ class AccountSecretsEncryptedStores(
             serializer = Nip47WalletConnect.Nip47URI::serializer,
         )
 
-    fun removeAccount(npub: String) {
-        file(npub).delete()
+    fun removeAccount(npub: String): Boolean {
+        val deleted = file(npub).delete()
         storeCache.remove(npub)
+        return deleted
     }
 }

amethyst/src/main/java/com/vitorpamplona/amethyst/service/crashreports/CrashReportCache.kt

@@ -27,16 +27,18 @@ import okio.FileNotFoundException
 import java.io.FileInputStream
 import java.io.InputStreamReader
 
+private const val STACK_TRACE_FILENAME = "stack.trace"
+
 class CrashReportCache(
     val appContext: Context,
 ) {
-    private fun outputStream() = appContext.openFileOutput("stack.trace", Context.MODE_PRIVATE)
+    private fun outputStream() = appContext.openFileOutput(STACK_TRACE_FILENAME, Context.MODE_PRIVATE)
 
-    private fun deleteReport() = appContext.deleteFile("stack.trace")
+    private fun deleteReport() = appContext.deleteFile(STACK_TRACE_FILENAME)
 
     private fun inputStreamOrNull(): FileInputStream? =
         try {
-            appContext.openFileInput("stack.trace")
+            appContext.openFileInput(STACK_TRACE_FILENAME)
         } catch (_: FileNotFoundException) {
             null
         }

amethyst/src/main/java/com/vitorpamplona/amethyst/service/notifications/EventNotificationConsumer.kt

@@ -52,13 +52,12 @@ import com.vitorpamplona.quartz.utils.TimeUtils
 import java.math.BigDecimal
 import kotlin.coroutines.cancellation.CancellationException
 
+private const val TAG = "EventNotificationConsumer"
+private const val ACCOUNT_QUERY_PARAM = "?account="
+
 class EventNotificationConsumer(
     private val applicationContext: Context,
 ) {
-    companion object {
-        const val TAG = "EventNotificationConsumer"
-    }
-
     suspend fun consume(event: GiftWrapEvent) {
         Log.d(TAG, "New Notification Arrived")
 
@@ -210,7 +209,7 @@ class EventNotificationConsumer(
                 val user = chatNote.author?.toBestDisplayName() ?: ""
                 val userPicture = chatNote.author?.profilePicture()
                 val noteUri =
-                    chatNote.toNEvent() + "?account=" +
+                    chatNote.toNEvent() + ACCOUNT_QUERY_PARAM +
                         account.signer.pubKey
                             .hexToByteArray()
                             .toNpub()
@@ -255,7 +254,7 @@ class EventNotificationConsumer(
                 val user = chatNote.author?.toBestDisplayName() ?: ""
                 val userPicture = chatNote.author?.profilePicture()
                 val noteUri =
-                    chatNote.toNEvent() + "?account=" +
+                    chatNote.toNEvent() + ACCOUNT_QUERY_PARAM +
                         account.signer.pubKey
                             .hexToByteArray()
                             .toNpub()
@@ -297,7 +296,7 @@ class EventNotificationConsumer(
                         val user = note.author?.toBestDisplayName() ?: ""
                         val userPicture = note.author?.profilePicture()
                         val noteUri =
-                            note.toNEvent() + "?account=" +
+                            note.toNEvent() + ACCOUNT_QUERY_PARAM +
                                 account.signer.pubKey
                                     .hexToByteArray()
                                     .toNpub()
@@ -324,17 +323,17 @@ class EventNotificationConsumer(
         signer: NostrSigner,
     ): String? {
         val event = note.event
-        when (event) {
+        return when (event) {
             is PrivateDmEvent -> {
-                return event.decryptContent(signer)
+                event.decryptContent(signer)
             }
 
             is LnZapRequestEvent -> {
-                return decryptZapContentAuthor(event, signer)?.content
+                decryptZapContentAuthor(event, signer)?.content
             }
 
             else -> {
-                return event?.content
+                event?.content
             }
         }
     }
@@ -402,7 +401,7 @@ class EventNotificationConsumer(
                             }
                             val userPicture = senderInfo.first.profilePicture()
                             val noteUri =
-                                "notifications?account=" +
+                                "notifications$ACCOUNT_QUERY_PARAM" +
                                     account.signer.pubKey
                                         .hexToByteArray()
                                         .toNpub()
@@ -437,7 +436,7 @@ class EventNotificationConsumer(
 
                         val userPicture = senderInfo.first.profilePicture()
                         val noteUri =
-                            "notifications?account=" +
+                            "notifications$ACCOUNT_QUERY_PARAM" +
                                 account.signer.pubKey
                                     .hexToByteArray()
                                     .toNpub()

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/navigation/navs/ObservableNav.kt

@@ -20,27 +20,16 @@
  */
 package com.vitorpamplona.amethyst.ui.navigation.navs
 
-import androidx.compose.material3.DrawerState
 import com.vitorpamplona.amethyst.ui.navigation.routes.Route
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.launch
 import kotlin.reflect.KClass
 
 class ObservableNav(
-    val sourceNav: INav,
+    private val sourceNav: INav,
     override val navigationScope: CoroutineScope,
     val onBeforeNavigate: () -> Unit,
-) : INav {
-    override val drawerState: DrawerState = sourceNav.drawerState
-
-    override fun closeDrawer() {
-        sourceNav.closeDrawer()
-    }
-
-    override fun openDrawer() {
-        sourceNav.openDrawer()
-    }
-
+) : INav by sourceNav {
     override fun nav(route: Route) {
         navigationScope.launch {
             onBeforeNavigate()
@@ -71,11 +60,11 @@ class ObservableNav(
 
     override fun <T : Route> popUpTo(
         route: Route,
-        upToClass: KClass<T>,
+        klass: KClass<T>,
     ) {
         navigationScope.launch {
             onBeforeNavigate()
         }
-        sourceNav.popUpTo(route, upToClass)
+        sourceNav.popUpTo(route, klass)
     }
 }

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/note/RelayListRow.kt

@@ -72,8 +72,10 @@ import com.vitorpamplona.amethyst.ui.theme.ripple24dp
 import com.vitorpamplona.amethyst.ui.theme.warningColorOnSecondSurface
 import com.vitorpamplona.quartz.nip01Core.relay.normalizer.NormalizedRelayUrl
 
+private const val DAMUS_RELAY_URL = "wss://relay.damus.io"
+
 @Composable
-public fun RelayBadgesHorizontal(
+fun RelayBadgesHorizontal(
     baseNote: Note,
     accountViewModel: AccountViewModel,
     nav: INav,
@@ -162,24 +164,24 @@ fun RenderRelayIconPreview() {
     ThemeComparisonColumn {
         Row {
             RenderRelayIcon(
-                displayUrl = "wss://relay.damus.io",
-                iconUrl = "wss://relay.damus.io",
+                displayUrl = DAMUS_RELAY_URL,
+                iconUrl = DAMUS_RELAY_URL,
                 loadProfilePicture = true,
                 pingInMs = 100,
                 loadRobohash = true,
                 iconModifier = LargeRelayIconModifier,
             )
             RenderRelayIcon(
-                displayUrl = "wss://relay.damus.io",
-                iconUrl = "wss://relay.damus.io",
+                displayUrl = DAMUS_RELAY_URL,
+                iconUrl = DAMUS_RELAY_URL,
                 loadProfilePicture = true,
                 pingInMs = 300,
                 loadRobohash = true,
                 iconModifier = LargeRelayIconModifier,
             )
             RenderRelayIcon(
-                displayUrl = "wss://relay.damus.io",
-                iconUrl = "wss://relay.damus.io",
+                displayUrl = DAMUS_RELAY_URL,
+                iconUrl = DAMUS_RELAY_URL,
                 loadProfilePicture = true,
                 pingInMs = 500,
                 loadRobohash = true,

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/note/TimeAgoFormatter.kt

@@ -28,9 +28,12 @@ import com.vitorpamplona.quartz.utils.TimeUtils
 import java.text.SimpleDateFormat
 import java.util.Locale
 
+private const val YEAR_DATE_FORMAT = "MMM dd, yyyy"
+private const val MONTH_DATE_FORMAT = "MMM dd"
+
 var locale = Locale.getDefault()
-var yearFormatter = SimpleDateFormat("MMM dd, yyyy", locale)
-var monthFormatter = SimpleDateFormat("MMM dd", locale)
+var yearFormatter = SimpleDateFormat(YEAR_DATE_FORMAT, locale)
+var monthFormatter = SimpleDateFormat(MONTH_DATE_FORMAT, locale)
 
 fun timeAgo(
     time: Long?,
@@ -46,8 +49,8 @@ fun timeAgo(
 
         if (locale != Locale.getDefault()) {
             locale = Locale.getDefault()
-            yearFormatter = SimpleDateFormat("MMM dd, yyyy", locale)
-            monthFormatter = SimpleDateFormat("MMM dd", locale)
+            yearFormatter = SimpleDateFormat(YEAR_DATE_FORMAT, locale)
+            monthFormatter = SimpleDateFormat(MONTH_DATE_FORMAT, locale)
         }
 
         " • " + yearFormatter.format(time * 1000)
@@ -55,8 +58,8 @@ fun timeAgo(
         // Dec 12
         if (locale != Locale.getDefault()) {
             locale = Locale.getDefault()
-            yearFormatter = SimpleDateFormat("MMM dd, yyyy", locale)
-            monthFormatter = SimpleDateFormat("MMM dd", locale)
+            yearFormatter = SimpleDateFormat(YEAR_DATE_FORMAT, locale)
+            monthFormatter = SimpleDateFormat(MONTH_DATE_FORMAT, locale)
         }
 
         " • " + monthFormatter.format(time * 1000)
@@ -86,8 +89,8 @@ fun timeAgoNoDot(
 
         if (locale != Locale.getDefault()) {
             locale = Locale.getDefault()
-            yearFormatter = SimpleDateFormat("MMM dd, yyyy", locale)
-            monthFormatter = SimpleDateFormat("MMM dd", locale)
+            yearFormatter = SimpleDateFormat(YEAR_DATE_FORMAT, locale)
+            monthFormatter = SimpleDateFormat(MONTH_DATE_FORMAT, locale)
         }
 
         yearFormatter.format(time * 1000)
@@ -95,8 +98,8 @@ fun timeAgoNoDot(
         // Dec 12
         if (locale != Locale.getDefault()) {
             locale = Locale.getDefault()
-            yearFormatter = SimpleDateFormat("MMM dd, yyyy", locale)
-            monthFormatter = SimpleDateFormat("MMM dd", locale)
+            yearFormatter = SimpleDateFormat(YEAR_DATE_FORMAT, locale)
+            monthFormatter = SimpleDateFormat(MONTH_DATE_FORMAT, locale)
         }
 
         monthFormatter.format(time * 1000)
@@ -127,8 +130,8 @@ fun dateFormatter(
 
         if (locale != Locale.getDefault()) {
             locale = Locale.getDefault()
-            yearFormatter = SimpleDateFormat("MMM dd, yyyy", locale)
-            monthFormatter = SimpleDateFormat("MMM dd", locale)
+            yearFormatter = SimpleDateFormat(YEAR_DATE_FORMAT, locale)
+            monthFormatter = SimpleDateFormat(MONTH_DATE_FORMAT, locale)
         }
 
         yearFormatter.format(time * 1000)
@@ -136,8 +139,8 @@ fun dateFormatter(
         // Dec 12
         if (locale != Locale.getDefault()) {
             locale = Locale.getDefault()
-            yearFormatter = SimpleDateFormat("MMM dd, yyyy", locale)
-            monthFormatter = SimpleDateFormat("MMM dd", locale)
+            yearFormatter = SimpleDateFormat(YEAR_DATE_FORMAT, locale)
+            monthFormatter = SimpleDateFormat(MONTH_DATE_FORMAT, locale)
         }
 
         monthFormatter.format(time * 1000)

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/chats/feed/layouts/ChatBubbleLayout.kt

@@ -59,6 +59,8 @@ import com.vitorpamplona.amethyst.ui.theme.chatDraftBackground
 import com.vitorpamplona.amethyst.ui.theme.mediumImportanceLink
 import com.vitorpamplona.amethyst.ui.theme.messageBubbleLimits
 
+private const val RELAYS_AND_ACTIONS_TEXT = "Relays and Actions"
+
 @OptIn(ExperimentalFoundationApi::class)
 @Composable
 fun ChatBubbleLayout(
@@ -205,7 +207,7 @@ private fun BubblePreview() {
                     },
                 )
             },
-            detailRow = { Text("Relays and Actions") },
+            detailRow = { Text(RELAYS_AND_ACTIONS_TEXT) },
         ) { bgColor ->
             Text("This is my note")
         }
@@ -239,7 +241,7 @@ private fun BubblePreview() {
                     },
                 )
             },
-            detailRow = { Text("Relays and Actions") },
+            detailRow = { Text(RELAYS_AND_ACTIONS_TEXT) },
         ) { bgColor ->
             Text("This is a very long long loong note")
         }
@@ -273,7 +275,7 @@ private fun BubblePreview() {
                     },
                 )
             },
-            detailRow = { Text("Relays and Actions") },
+            detailRow = { Text(RELAYS_AND_ACTIONS_TEXT) },
         ) { bgColor ->
             Text("This is a draft note")
         }
@@ -307,7 +309,7 @@ private fun BubblePreview() {
                     },
                 )
             },
-            detailRow = { Text("Relays and Actions") },
+            detailRow = { Text(RELAYS_AND_ACTIONS_TEXT) },
         ) { bgColor ->
             Text("Short note")
         }

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/chats/rooms/twopane/TwoPaneNav.kt

@@ -20,20 +20,16 @@
  */
 package com.vitorpamplona.amethyst.ui.screen.loggedIn.chats.rooms.twopane
 
-import androidx.compose.material3.DrawerState
 import androidx.compose.runtime.mutableStateOf
 import com.vitorpamplona.amethyst.ui.navigation.navs.INav
 import com.vitorpamplona.amethyst.ui.navigation.routes.Route
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.launch
-import kotlin.reflect.KClass
 
 class TwoPaneNav(
-    val nav: INav,
+    private val nav: INav,
     override val navigationScope: CoroutineScope,
-) : INav {
-    override val drawerState: DrawerState = nav.drawerState
-
+) : INav by nav {
     val innerNav = mutableStateOf<Route?>(null)
 
     override fun nav(route: Route) {
@@ -56,27 +52,4 @@ class TwoPaneNav(
             }
         }
     }
-
-    override fun newStack(route: Route) {
-        nav.newStack(route)
-    }
-
-    override fun popBack() {
-        nav.popBack()
-    }
-
-    override fun <T : Route> popUpTo(
-        route: Route,
-        klass: KClass<T>,
-    ) {
-        nav.popUpTo<T>(route, klass)
-    }
-
-    override fun closeDrawer() {
-        nav.closeDrawer()
-    }
-
-    override fun openDrawer() {
-        nav.openDrawer()
-    }
 }

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/notifications/CardFeedState.kt

@@ -33,16 +33,16 @@ import kotlinx.collections.immutable.toImmutableMap
 import kotlinx.coroutines.flow.MutableStateFlow
 
 @Immutable
-abstract class Card {
-    abstract fun createdAt(): Long
+interface Card {
+    fun createdAt(): Long
 
-    abstract fun id(): String
+    fun id(): String
 }
 
 @Immutable
 class BadgeCard(
     val note: Note,
-) : Card() {
+) : Card {
     override fun createdAt(): Long = note.createdAt() ?: 0L
 
     override fun id() = note.idHex
@@ -51,7 +51,7 @@ class BadgeCard(
 @Immutable
 class NoteCard(
     val note: Note,
-) : Card() {
+) : Card {
     override fun createdAt(): Long = note.createdAt() ?: 0L
 
     override fun id() = note.idHex
@@ -61,7 +61,7 @@ class NoteCard(
 class ZapUserSetCard(
     val user: User,
     val zapEvents: ImmutableList<CombinedZap>,
-) : Card() {
+) : Card {
     val createdAt = zapEvents.maxOfOrNull { it.createdAt() ?: 0L } ?: 0L
 
     override fun createdAt(): Long = createdAt
@@ -75,7 +75,7 @@ class MultiSetCard(
     val boostEvents: ImmutableList<Note>,
     val likeEvents: ImmutableList<Note>,
     val zapEvents: ImmutableList<CombinedZap>,
-) : Card() {
+) : Card {
     val maxCreatedAt =
         maxOf(
             zapEvents.maxOfOrNull { it.createdAt() ?: 0L } ?: 0L,
@@ -108,7 +108,7 @@ class MultiSetCard(
 @Immutable
 class MessageSetCard(
     val note: Note,
-) : Card() {
+) : Card {
     override fun createdAt(): Long = note.createdAt() ?: 0L
 
     override fun id() = note.idHex