Merge pull request #1395 from davotoula/refactor-decrypt-and-index-processor-light

Refactor decrypt and index processor

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

@@ -173,7 +173,7 @@ class AccountViewModel(
             scope = viewModelScope,
         )
 
-    val newNotesPreProcessor = DecryptAndIndexProcessor(account, LocalCache)
+    val newNotesPreProcessor = EventProcessor(account, LocalCache)
 
     var firstRoute: Route? = null
 
@@ -949,7 +949,7 @@ class AccountViewModel(
         }
     }
 
-    suspend fun loadReactionTo(note: Note?): String? {
+    fun loadReactionTo(note: Note?): String? {
         if (note == null) return null
 
         return note.getReactionBy(userProfile())
@@ -1027,7 +1027,7 @@ class AccountViewModel(
 
     fun getUserIfExists(hex: HexKey): User? = LocalCache.getUserIfExists(hex)
 
-    private suspend fun checkGetOrCreateNote(key: HexKey): Note? = LocalCache.checkGetOrCreateNote(key)
+    private fun checkGetOrCreateNote(key: HexKey): Note? = LocalCache.checkGetOrCreateNote(key)
 
     override suspend fun getOrCreateNote(key: HexKey): Note = LocalCache.getOrCreateNote(key)
 
@@ -1102,11 +1102,11 @@ class AccountViewModel(
         )
     }
 
-    suspend fun checkGetOrCreatePublicChatChannel(key: HexKey): PublicChatChannel? = LocalCache.getOrCreatePublicChatChannel(key)
+    fun checkGetOrCreatePublicChatChannel(key: HexKey): PublicChatChannel? = LocalCache.getOrCreatePublicChatChannel(key)
 
-    suspend fun checkGetOrCreateLiveActivityChannel(key: Address): LiveActivitiesChannel? = LocalCache.getOrCreateLiveChannel(key)
+    fun checkGetOrCreateLiveActivityChannel(key: Address): LiveActivitiesChannel? = LocalCache.getOrCreateLiveChannel(key)
 
-    suspend fun checkGetOrCreateEphemeralChatChannel(key: RoomId): EphemeralChatChannel? = LocalCache.getOrCreateEphemeralChannel(key)
+    fun checkGetOrCreateEphemeralChatChannel(key: RoomId): EphemeralChatChannel? = LocalCache.getOrCreateEphemeralChannel(key)
 
     fun checkGetOrCreateChannel(
         key: HexKey,
@@ -1660,7 +1660,7 @@ class AccountViewModel(
         }
     }
 
-    suspend fun findUsersStartingWithSync(prefix: String) = LocalCache.findUsersStartingWith(prefix, account)
+    fun findUsersStartingWithSync(prefix: String) = LocalCache.findUsersStartingWith(prefix, account)
 
     fun relayStatusFlow() = app.client.relayStatusFlow()
 

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

@@ -29,6 +29,7 @@ import com.vitorpamplona.quartz.experimental.ephemChat.chat.EphemeralChatEvent
 import com.vitorpamplona.quartz.nip01Core.core.Event
 import com.vitorpamplona.quartz.nip03Timestamp.OtsEvent
 import com.vitorpamplona.quartz.nip04Dm.messages.PrivateDmEvent
+import com.vitorpamplona.quartz.nip17Dm.base.ChatroomKey
 import com.vitorpamplona.quartz.nip17Dm.files.ChatMessageEncryptedFileHeaderEvent
 import com.vitorpamplona.quartz.nip17Dm.messages.ChatMessageEvent
 import com.vitorpamplona.quartz.nip28PublicChat.message.ChannelMessageEvent
@@ -39,241 +40,178 @@ import com.vitorpamplona.quartz.nip57Zaps.LnZapRequestEvent
 import com.vitorpamplona.quartz.nip59Giftwrap.seals.SealedRumorEvent
 import com.vitorpamplona.quartz.nip59Giftwrap.wraps.GiftWrapEvent
 import kotlinx.coroutines.CancellationException
+import kotlin.reflect.KClass
 
-class DecryptAndIndexProcessor(
+class EventProcessor(
-    val account: Account,
+    private val account: Account,
-    val cache: LocalCache,
+    private val cache: LocalCache,
 ) {
+    private val decryptionService = DecryptionService(account)
+    private val indexingService = IndexingService(account, cache)
+    private val chatroomService = ChatroomService(account)
+    private val eventHandlers = createEventHandlers()
+
     suspend fun consume(note: Note) {
-        val noteEvent = note.event
+        note.event?.let { event ->
-        if (noteEvent != null) {
             try {
-                consumeAlreadyVerified(noteEvent, note, note)
+                processEvent(event, note, note)
             } catch (e: Exception) {
-                Log.e("PrecacheNewNotesProcessor", "Error processing note", e)
+                Log.e("EventProcessor", "Error processing note", e)
-            }
-        }
-    }
-
-    suspend fun consumeAlreadyVerified(
-        event: Event,
-        eventNote: Note,
-        publicNote: Note,
-    ) {
-        when (event) {
-            is PrivateDmEvent -> {
-                if (event.canDecrypt(account.signer.pubKey)) {
-                    val talkingWith = event.chatroomKey(account.signer.pubKey)
-                    account.chatroomList.addMessage(talkingWith, eventNote)
-                }
-            }
-
-            is ChatMessageEvent -> {
-                if (event.isIncluded(account.signer.pubKey)) {
-                    val key = event.chatroomKey(account.signer.pubKey)
-                    account.chatroomList.addMessage(key, eventNote)
-                }
-            }
-
-            is ChatMessageEncryptedFileHeaderEvent -> {
-                if (event.isIncluded(account.signer.pubKey)) {
-                    val key = event.chatroomKey(account.signer.pubKey)
-                    account.chatroomList.addMessage(key, eventNote)
-                }
-            }
-
-            is OtsEvent -> {
-                // verifies new OTS upon arrival
-                Amethyst.instance.otsVerifCache.cacheVerify(event, account.otsResolverBuilder)
-            }
-
-            is DraftEvent -> {
-                // Avoid decrypting over and over again if the event already exist.
-                if (event.pubKey == account.signer.pubKey) {
-                    if (!event.isDeleted()) {
-                        val rumor = account.draftsDecryptionCache.preCachedDraft(event) ?: account.draftsDecryptionCache.cachedDraft(event)
-                        if (rumor != null) {
-                            indexDraftAsRealEvent(eventNote, rumor)
-                        }
-                    }
-                }
-            }
-
-            is GiftWrapEvent -> {
-                if (event.recipientPubKey() == account.signer.pubKey) {
-                    val innerGiftId = event.innerEventId
-                    if (innerGiftId == null) {
-                        event.unwrapOrNull(account.signer)?.let { innerGift ->
-                            // clear the encrypted payload to save memory
-                            eventNote.event = event.copyNoContent()
-                            if (cache.justConsume(innerGift, null, false)) {
-                                cache.copyRelaysFromTo(publicNote, innerGift)
-                                val innerGiftNote = cache.getOrCreateNote(innerGift.id)
-                                consumeAlreadyVerified(innerGift, innerGiftNote, publicNote)
-                            }
-                        }
-                    } else {
-                        cache.copyRelaysFromTo(publicNote, innerGiftId)
-
-                        val innerGiftNote = cache.getOrCreateNote(innerGiftId)
-                        val innerGift = innerGiftNote.event
-                        if (innerGift != null) {
-                            consumeAlreadyVerified(innerGift, innerGiftNote, publicNote)
-                        }
-                    }
-                }
-            }
-
-            is SealedRumorEvent -> {
-                val rumorId = event.innerEventId
-                if (rumorId == null) {
-                    event.unsealOrNull(account.signer)?.let { innerRumor ->
-                        // clear the encrypted payload to save memory
-                        eventNote.event = event.copyNoContent()
-
-                        // rumors cannot be verified
-                        cache.justConsume(innerRumor, null, true)
-
-                        cache.copyRelaysFromTo(publicNote, innerRumor)
-                        val innerRumorNote = cache.getOrCreateNote(innerRumor.id)
-                        consumeAlreadyVerified(innerRumor, innerRumorNote, publicNote)
-                    }
-                } else {
-                    cache.copyRelaysFromTo(publicNote, rumorId)
-
-                    val innerRumorNote = cache.getOrCreateNote(rumorId)
-                    val innerRumor = innerRumorNote.event
-                    if (innerRumor != null) {
-                        consumeAlreadyVerified(innerRumor, innerRumorNote, publicNote)
-                    }
-                }
-            }
-
-            is LnZapRequestEvent -> {
-                if (account.privateZapsDecryptionCache.cachedPrivateZap(event) == null && event.isPrivateZap()) {
-                    account.privateZapsDecryptionCache.decryptPrivateZap(event)
-                }
             }
         }
     }
 
     suspend fun delete(note: Note) {
-        val noteEvent = note.event
+        note.event?.let { event ->
-        if (noteEvent != null) {
             try {
-                delete(noteEvent, note)
+                deleteEvent(event, note)
             } catch (e: Exception) {
-                Log.e("PrecacheNewNotesProcessor", "Error processing note", e)
+                Log.e("EventProcessor", "Error deleting note", e)
             }
         }
     }
 
-    suspend fun delete(
+    internal suspend fun processEvent(
+        event: Event,
+        eventNote: Note,
+        publicNote: Note,
+    ) {
+        eventHandlers[event::class]?.process(event, eventNote, publicNote)
+    }
+
+    internal suspend fun deleteEvent(
         event: Event,
         eventNote: Note,
     ) {
-        when (event) {
+        eventHandlers[event::class]?.delete(event, eventNote)
-            is PrivateDmEvent -> {
+    }
-                if (event.canDecrypt(account.signer.pubKey)) {
-                    // Avoid decrypting over and over again if the event already exist.
-                    val talkingWith = event.chatroomKey(account.signer.pubKey)
-                    account.chatroomList.removeMessage(talkingWith, eventNote)
-                }
-            }
 
-            is ChatMessageEvent -> {
+    private fun createEventHandlers(): Map<KClass<out Event>, EventHandler> =
-                if (event.isIncluded(account.signer.pubKey)) {
+        mapOf(
-                    val key = event.chatroomKey(account.signer.pubKey)
+            PrivateDmEvent::class to PrivateDmHandler(chatroomService),
-                    account.chatroomList.removeMessage(key, eventNote)
+            ChatMessageEvent::class to ChatMessageHandler(chatroomService),
-                }
+            ChatMessageEncryptedFileHeaderEvent::class to ChatMessageEncryptedFileHeaderHandler(chatroomService),
-            }
+            OtsEvent::class to OtsEventHandler(account),
+            DraftEvent::class to DraftEventHandler(decryptionService, indexingService),
+            GiftWrapEvent::class to GiftWrapEventHandler(decryptionService, cache, this),
+            SealedRumorEvent::class to SealedRumorEventHandler(decryptionService, cache, this),
+            LnZapRequestEvent::class to LnZapRequestEventHandler(decryptionService),
+            LnZapEvent::class to LnZapEventHandler(decryptionService),
+        )
 
-            is ChatMessageEncryptedFileHeaderEvent -> {
+    suspend fun runNew(newNotes: Set<Note>) {
-                if (event.isIncluded(account.signer.pubKey)) {
+        try {
-                    val key = event.chatroomKey(account.signer.pubKey)
+            newNotes.forEach { consume(it) }
-                    account.chatroomList.removeMessage(key, eventNote)
+            handleDeletedDrafts(newNotes)
-                }
+        } catch (e: Exception) {
-            }
+            if (e is CancellationException) throw e
-
+            Log.e("EventProcessor", "Error processing batch", e)
-            is DraftEvent -> {
-                // Avoid decrypting over and over again if the event already exist.
-                if (event.pubKey == account.signer.pubKey) {
-                    // already deindexed by LocalCache
-                    // deindexDraftAsRealEvent(eventNote)
-                }
-            }
-
-            is GiftWrapEvent -> {
-                if (event.recipientPubKey() == account.signer.pubKey) {
-                    val innerGiftId = event.innerEventId
-                    if (innerGiftId != null) {
-                        val innerGiftNote = cache.getNoteIfExists(innerGiftId)
-                        val innerGift = innerGiftNote?.event
-                        if (innerGift != null) {
-                            delete(innerGift, innerGiftNote)
-                        }
-                    }
-                }
-            }
-
-            is SealedRumorEvent -> {
-                val rumorId = event.innerEventId
-                if (rumorId != null) {
-                    val innerRumorNote = cache.getNoteIfExists(rumorId)
-                    val innerRumor = innerRumorNote?.event
-                    if (innerRumor != null) {
-                        delete(innerRumor, innerRumorNote)
-                    }
-                }
-            }
-
-            is LnZapEvent -> {
-                event.zapRequest?.let { req ->
-                    if (req.isPrivateZap()) {
-                        // We can't know which account this was for without going through it.
-                        account.privateZapsDecryptionCache.delete(req)
-                    }
-                }
-            }
-
-            is LnZapRequestEvent -> {
-                if (event.isPrivateZap()) {
-                    account.privateZapsDecryptionCache.delete(event)
-                }
-            }
-            // ..
         }
     }
 
+    suspend fun runDeleted(notes: Set<Note>) {
+        try {
+            notes.forEach { delete(it) }
+        } catch (e: Exception) {
+            if (e is CancellationException) throw e
+            Log.e("EventProcessor", "Error deleting batch", e)
+        }
+    }
+
+    private suspend fun handleDeletedDrafts(newNotes: Set<Note>) {
+        val deletedDrafts =
+            newNotes.mapNotNull { note ->
+                val event = note.event
+                if (event is DraftEvent && event.isDeleted()) note else null
+            }
+
+        if (deletedDrafts.isNotEmpty()) {
+            Log.w("EventProcessor", "Deleting ${deletedDrafts.size} draft notes")
+            account.delete(deletedDrafts)
+        }
+    }
+}
+
+class DecryptionService(
+    val account: Account,
+) {
+    suspend fun unwrapGiftWrap(event: GiftWrapEvent): Event? = event.unwrapOrNull(account.signer)
+
+    suspend fun unsealRumor(event: SealedRumorEvent): Event? = event.unsealOrNull(account.signer)
+
+    suspend fun decryptDraft(event: DraftEvent): Event? =
+        account.draftsDecryptionCache.preCachedDraft(event)
+            ?: account.draftsDecryptionCache.cachedDraft(event)
+
+    suspend fun handlePrivateZap(event: LnZapRequestEvent) {
+        if (account.privateZapsDecryptionCache.cachedPrivateZap(event) == null && event.isPrivateZap()) {
+            account.privateZapsDecryptionCache.decryptPrivateZap(event)
+        }
+    }
+
+    fun deletePrivateZap(event: LnZapRequestEvent) {
+        if (event.isPrivateZap()) {
+            account.privateZapsDecryptionCache.delete(event)
+        }
+    }
+
+    fun deletePrivateZapFromZapEvent(event: LnZapEvent) {
+        event.zapRequest?.let { req ->
+            if (req.isPrivateZap()) {
+                account.privateZapsDecryptionCache.delete(req)
+            }
+        }
+    }
+}
+
+class IndexingService(
+    private val account: Account,
+    private val cache: LocalCache,
+) {
     fun indexDraftAsRealEvent(
         draftEventWrap: Note,
         rumor: Event,
+    ) {
+        setupReplyRelationships(draftEventWrap, rumor)
+        indexByEventType(draftEventWrap, rumor)
+    }
+
+    private fun setupReplyRelationships(
+        draftEventWrap: Note,
+        rumor: Event,
     ) {
         draftEventWrap.replyTo = cache.computeReplyTo(rumor)
         draftEventWrap.replyTo?.forEach { it.addReply(draftEventWrap) }
+    }
+
+    private fun indexByEventType(
+        draftEventWrap: Note,
+        rumor: Event,
+    ) {
+        val chatroomService = ChatroomService(account)
 
         when (rumor) {
             is PrivateDmEvent -> {
                 if (rumor.canDecrypt(account.signer)) {
-                    val talkingWith = rumor.chatroomKey(account.signer.pubKey)
+                    val key = rumor.chatroomKey(account.signer.pubKey)
-                    account.chatroomList.addMessage(talkingWith, draftEventWrap)
+                    chatroomService.addMessage(key, draftEventWrap)
                 }
             }
             is ChatMessageEvent -> {
                 if (rumor.isIncluded(account.signer.pubKey)) {
                     val key = rumor.chatroomKey(account.signer.pubKey)
-                    account.chatroomList.addMessage(key, draftEventWrap)
+                    chatroomService.addMessage(key, draftEventWrap)
                 }
             }
             is ChatMessageEncryptedFileHeaderEvent -> {
                 if (rumor.isIncluded(account.signer.pubKey)) {
                     val key = rumor.chatroomKey(account.signer.pubKey)
-                    account.chatroomList.addMessage(key, draftEventWrap)
+                    chatroomService.addMessage(key, draftEventWrap)
                 }
             }
             is EphemeralChatEvent -> {
-                rumor.roomId()?.let {
+                rumor.roomId()?.let { roomId ->
-                    val channel = cache.getOrCreateEphemeralChannel(it)
+                    val channel = cache.getOrCreateEphemeralChannel(roomId)
                     channel.addNote(draftEventWrap, null)
                 }
             }
@@ -291,41 +229,303 @@ class DecryptAndIndexProcessor(
             }
         }
     }
+}
 
-    suspend fun runNew(newNotes: Set<Note>) {
+class ChatroomService(
-        try {
+    val account: Account,
-            newNotes.forEach {
+) {
-                consume(it)
+    fun addMessage(
-            }
+        chatroomKey: ChatroomKey,
+        note: Note,
+    ) {
+        account.chatroomList.addMessage(chatroomKey, note)
+    }
 
-            val toDelete =
+    fun removeMessage(
-                newNotes.mapNotNull {
+        chatroomKey: ChatroomKey,
-                    val noteEvent = it.event
+        note: Note,
-                    if (noteEvent is DraftEvent && noteEvent.isDeleted()) {
+    ) {
-                        it
+        account.chatroomList.removeMessage(chatroomKey, note)
-                    } else {
+    }
-                        null
+}
-                    }
-                }
 
-            if (toDelete.isNotEmpty()) {
+interface EventHandler {
-                Log.w("PrecacheNewNotesProcessor", "Deleting ${toDelete.size} draft notes that should have been deleted already")
+    suspend fun process(
-                account.delete(toDelete)
+        event: Event,
-            }
+        eventNote: Note,
-        } catch (e: Exception) {
+        publicNote: Note,
-            if (e is CancellationException) throw e
+    ) {}
-            Log.e("PrecacheNewNotesProcessor", "This shouldn't happen", e)
+
+    suspend fun delete(
+        event: Event,
+        eventNote: Note,
+    ) {}
+}
+
+class PrivateDmHandler(
+    private val chatroomService: ChatroomService,
+) : EventHandler {
+    override suspend fun process(
+        event: Event,
+        eventNote: Note,
+        publicNote: Note,
+    ) {
+        event as PrivateDmEvent
+        if (event.canDecrypt(chatroomService.account.signer.pubKey)) {
+            val key = event.chatroomKey(chatroomService.account.signer.pubKey)
+            chatroomService.addMessage(key, eventNote)
         }
     }
 
-    suspend fun runDeleted(newNotes: Set<Note>) {
+    override suspend fun delete(
-        try {
+        event: Event,
-            newNotes.forEach {
+        eventNote: Note,
-                delete(it)
+    ) {
-            }
+        event as PrivateDmEvent
-        } catch (e: Exception) {
+        if (event.canDecrypt(chatroomService.account.signer.pubKey)) {
-            if (e is CancellationException) throw e
+            val key = event.chatroomKey(chatroomService.account.signer.pubKey)
-            Log.e("PrecacheNewNotesProcessor", "This shouldn't happen", e)
+            chatroomService.removeMessage(key, eventNote)
         }
     }
 }
+
+class ChatMessageHandler(
+    private val chatroomService: ChatroomService,
+) : EventHandler {
+    override suspend fun process(
+        event: Event,
+        eventNote: Note,
+        publicNote: Note,
+    ) {
+        event as ChatMessageEvent
+        if (event.isIncluded(chatroomService.account.signer.pubKey)) {
+            val key = event.chatroomKey(chatroomService.account.signer.pubKey)
+            chatroomService.addMessage(key, eventNote)
+        }
+    }
+
+    override suspend fun delete(
+        event: Event,
+        eventNote: Note,
+    ) {
+        event as ChatMessageEvent
+        if (event.isIncluded(chatroomService.account.signer.pubKey)) {
+            val key = event.chatroomKey(chatroomService.account.signer.pubKey)
+            chatroomService.removeMessage(key, eventNote)
+        }
+    }
+}
+
+class ChatMessageEncryptedFileHeaderHandler(
+    private val chatroomService: ChatroomService,
+) : EventHandler {
+    override suspend fun process(
+        event: Event,
+        eventNote: Note,
+        publicNote: Note,
+    ) {
+        event as ChatMessageEncryptedFileHeaderEvent
+        if (event.isIncluded(chatroomService.account.signer.pubKey)) {
+            val key = event.chatroomKey(chatroomService.account.signer.pubKey)
+            chatroomService.addMessage(key, eventNote)
+        }
+    }
+
+    override suspend fun delete(
+        event: Event,
+        eventNote: Note,
+    ) {
+        event as ChatMessageEncryptedFileHeaderEvent
+        if (event.isIncluded(chatroomService.account.signer.pubKey)) {
+            val key = event.chatroomKey(chatroomService.account.signer.pubKey)
+            chatroomService.removeMessage(key, eventNote)
+        }
+    }
+}
+
+class OtsEventHandler(
+    private val account: Account,
+) : EventHandler {
+    override suspend fun process(
+        event: Event,
+        eventNote: Note,
+        publicNote: Note,
+    ) {
+        event as OtsEvent
+        Amethyst.instance.otsVerifCache.cacheVerify(event, account.otsResolverBuilder)
+    }
+}
+
+class DraftEventHandler(
+    private val decryptionService: DecryptionService,
+    private val indexingService: IndexingService,
+) : EventHandler {
+    override suspend fun process(
+        event: Event,
+        eventNote: Note,
+        publicNote: Note,
+    ) {
+        event as DraftEvent
+        if (event.pubKey == decryptionService.account.signer.pubKey && !event.isDeleted()) {
+            val rumor = decryptionService.decryptDraft(event)
+            rumor?.let { indexingService.indexDraftAsRealEvent(eventNote, it) }
+        }
+    }
+}
+
+class GiftWrapEventHandler(
+    private val decryptionService: DecryptionService,
+    private val cache: LocalCache,
+    private val eventProcessor: EventProcessor,
+) : EventHandler {
+    override suspend fun process(
+        event: Event,
+        eventNote: Note,
+        publicNote: Note,
+    ) {
+        event as GiftWrapEvent
+        if (event.recipientPubKey() != decryptionService.account.signer.pubKey) return
+
+        val innerGiftId = event.innerEventId
+        if (innerGiftId == null) {
+            processNewGiftWrap(event, eventNote, publicNote)
+        } else {
+            processExistingGiftWrap(innerGiftId, publicNote)
+        }
+    }
+
+    override suspend fun delete(
+        event: Event,
+        eventNote: Note,
+    ) {
+        event as GiftWrapEvent
+        if (event.recipientPubKey() != decryptionService.account.signer.pubKey) return
+
+        event.innerEventId?.let { innerGiftId ->
+            val innerGiftNote = cache.getNoteIfExists(innerGiftId)
+            innerGiftNote?.event?.let { innerGift ->
+                eventProcessor.deleteEvent(innerGift, innerGiftNote)
+            }
+        }
+    }
+
+    private suspend fun processNewGiftWrap(
+        event: GiftWrapEvent,
+        eventNote: Note,
+        publicNote: Note,
+    ) {
+        val innerGift = decryptionService.unwrapGiftWrap(event) ?: return
+
+        eventNote.event = event.copyNoContent()
+        if (cache.justConsume(innerGift, null, false)) {
+            cache.copyRelaysFromTo(publicNote, innerGift)
+            val innerGiftNote = cache.getOrCreateNote(innerGift.id)
+            eventProcessor.processEvent(innerGift, innerGiftNote, publicNote)
+        }
+    }
+
+    private suspend fun processExistingGiftWrap(
+        innerGiftId: String,
+        publicNote: Note,
+    ) {
+        cache.copyRelaysFromTo(publicNote, innerGiftId)
+        val innerGiftNote = cache.getOrCreateNote(innerGiftId)
+        innerGiftNote.event?.let { innerGift ->
+            eventProcessor.processEvent(innerGift, innerGiftNote, publicNote)
+        }
+    }
+}
+
+class SealedRumorEventHandler(
+    private val decryptionService: DecryptionService,
+    private val cache: LocalCache,
+    private val eventProcessor: EventProcessor,
+) : EventHandler {
+    override suspend fun process(
+        event: Event,
+        eventNote: Note,
+        publicNote: Note,
+    ) {
+        event as SealedRumorEvent
+
+        val rumorId = event.innerEventId
+        if (rumorId == null) {
+            processNewSealedRumor(event, eventNote, publicNote)
+        } else {
+            processExistingSealedRumor(rumorId, publicNote)
+        }
+    }
+
+    override suspend fun delete(
+        event: Event,
+        eventNote: Note,
+    ) {
+        event as SealedRumorEvent
+
+        event.innerEventId?.let { rumorId ->
+            val innerRumorNote = cache.getNoteIfExists(rumorId)
+            innerRumorNote?.event?.let { innerRumor ->
+                eventProcessor.deleteEvent(innerRumor, innerRumorNote)
+            }
+        }
+    }
+
+    private suspend fun processNewSealedRumor(
+        event: SealedRumorEvent,
+        eventNote: Note,
+        publicNote: Note,
+    ) {
+        val innerRumor = decryptionService.unsealRumor(event) ?: return
+
+        eventNote.event = event.copyNoContent()
+        cache.justConsume(innerRumor, null, true)
+        cache.copyRelaysFromTo(publicNote, innerRumor)
+
+        val innerRumorNote = cache.getOrCreateNote(innerRumor.id)
+        eventProcessor.processEvent(innerRumor, innerRumorNote, publicNote)
+    }
+
+    private suspend fun processExistingSealedRumor(
+        rumorId: String,
+        publicNote: Note,
+    ) {
+        cache.copyRelaysFromTo(publicNote, rumorId)
+        val innerRumorNote = cache.getOrCreateNote(rumorId)
+        innerRumorNote.event?.let { innerRumor ->
+            eventProcessor.processEvent(innerRumor, innerRumorNote, publicNote)
+        }
+    }
+}
+
+class LnZapRequestEventHandler(
+    private val decryptionService: DecryptionService,
+) : EventHandler {
+    override suspend fun process(
+        event: Event,
+        eventNote: Note,
+        publicNote: Note,
+    ) {
+        event as LnZapRequestEvent
+        decryptionService.handlePrivateZap(event)
+    }
+
+    override suspend fun delete(
+        event: Event,
+        eventNote: Note,
+    ) {
+        event as LnZapRequestEvent
+        decryptionService.deletePrivateZap(event)
+    }
+}
+
+class LnZapEventHandler(
+    private val decryptionService: DecryptionService,
+) : EventHandler {
+    override suspend fun delete(
+        event: Event,
+        eventNote: Note,
+    ) {
+        event as LnZapEvent
+        decryptionService.deletePrivateZapFromZapEvent(event)
+    }
+}