Loads basic information for all the accounts in the app.

app/src/main/java/com/vitorpamplona/amethyst/LocalPreferences.kt

@@ -35,6 +35,8 @@ import com.vitorpamplona.quartz.signers.NostrSignerExternal
 import com.vitorpamplona.quartz.signers.NostrSignerInternal
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
 import kotlinx.coroutines.withContext
 import java.io.File
 import java.util.Locale
@@ -99,6 +101,7 @@ object LocalPreferences {
 
     private var _currentAccount: String? = null
     private var _savedAccounts: List<AccountInfo>? = null
+    private var _cachedAccounts: MutableMap<String, Account?> = mutableMapOf()
 
     suspend fun currentAccount(): String? {
         if (_currentAccount == null) {
@@ -286,9 +289,9 @@ object LocalPreferences {
     }
 
     suspend fun loadCurrentAccountFromEncryptedStorage(): Account? {
-        val acc = loadCurrentAccountFromEncryptedStorage(currentAccount())
-        acc?.registerObservers()
-        return acc
+        return currentAccount()?.let {
+            loadCurrentAccountFromEncryptedStorage(it)
+        }
     }
 
     suspend fun migrateOldSharedSettings(): Settings? {
@@ -376,7 +379,23 @@ object LocalPreferences {
         }
     }
 
-    suspend fun loadCurrentAccountFromEncryptedStorage(npub: String?): Account? = withContext(Dispatchers.IO) {
+    val mutex = Mutex()
+    suspend fun loadCurrentAccountFromEncryptedStorage(npub: String): Account? = withContext(Dispatchers.IO) {
+        mutex.withLock {
+            if (_cachedAccounts.containsKey(npub)) {
+                return@withContext _cachedAccounts.get(npub)
+            }
+
+            val account = innerLoadCurrentAccountFromEncryptedStorage(npub)
+            account?.registerObservers()
+
+            _cachedAccounts.put(npub, account)
+
+            return@withContext account
+        }
+    }
+
+    suspend fun innerLoadCurrentAccountFromEncryptedStorage(npub: String?): Account? = withContext(Dispatchers.IO) {
         checkNotInMainThread()
 
         return@withContext with(encryptedPreferences(npub)) {

app/src/main/java/com/vitorpamplona/amethyst/ServiceManager.kt

@@ -28,7 +28,9 @@ import com.vitorpamplona.amethyst.service.NostrThreadDataSource
 import com.vitorpamplona.amethyst.service.NostrUserProfileDataSource
 import com.vitorpamplona.amethyst.service.NostrVideoDataSource
 import com.vitorpamplona.amethyst.service.relays.Client
+import com.vitorpamplona.quartz.encoders.bechToBytes
 import com.vitorpamplona.quartz.encoders.decodePublicKeyAsHexOrNull
+import com.vitorpamplona.quartz.encoders.toHexKey
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.delay
@@ -78,6 +80,13 @@ class ServiceManager {
 
             // start services
             NostrAccountDataSource.account = myAccount
+            NostrAccountDataSource.otherAccounts = LocalPreferences.allSavedAccounts().mapNotNull {
+                try {
+                    it.npub.bechToBytes().toHexKey()
+                } catch (e: Exception) {
+                    null
+                }
+            }
             NostrHomeDataSource.account = myAccount
             NostrChatroomListDataSource.account = myAccount
             NostrVideoDataSource.account = myAccount

app/src/main/java/com/vitorpamplona/amethyst/service/NostrAccountDataSource.kt

@@ -10,6 +10,7 @@ import com.vitorpamplona.amethyst.service.relays.EOSETime
 import com.vitorpamplona.amethyst.service.relays.JsonFilter
 import com.vitorpamplona.amethyst.service.relays.Relay
 import com.vitorpamplona.amethyst.service.relays.TypedFilter
+import com.vitorpamplona.quartz.encoders.HexKey
 import com.vitorpamplona.quartz.events.AdvertisedRelayListEvent
 import com.vitorpamplona.quartz.events.BadgeAwardEvent
 import com.vitorpamplona.quartz.events.BadgeProfilesEvent
@@ -38,6 +39,7 @@ import com.vitorpamplona.quartz.utils.TimeUtils
 // TODO: Migrate this to a property of AccountVi
 object NostrAccountDataSource : NostrDataSource("AccountData") {
     lateinit var account: Account
+    var otherAccounts = listOf<HexKey>()
 
     val latestEOSEs = EOSEAccount()
     val hasLoadedTheBasics = mutableMapOf<User, Boolean>()
@@ -75,6 +77,18 @@ object NostrAccountDataSource : NostrDataSource("AccountData") {
         )
     }
 
+    fun createOtherAccountsBaseFilter(): TypedFilter? {
+        if (otherAccounts.isEmpty()) return null
+        return TypedFilter(
+            types = COMMON_FEED_TYPES,
+            filter = JsonFilter(
+                kinds = listOf(MetadataEvent.kind, ContactListEvent.kind, AdvertisedRelayListEvent.kind, MuteListEvent.kind, PeopleListEvent.kind),
+                authors = otherAccounts.filter { it != account.userProfile().pubkeyHex },
+                limit = 100
+            )
+        )
+    }
+
     fun createAccountAcceptedAwardsFilter(): TypedFilter {
         return TypedFilter(
             types = COMMON_FEED_TYPES,
@@ -218,7 +232,7 @@ object NostrAccountDataSource : NostrDataSource("AccountData") {
     override fun updateChannelFilters() {
         return if (hasLoadedTheBasics[account.userProfile()] != null) {
             // gets everthing about the user logged in
-            accountChannel.typedFilters = listOf(
+            accountChannel.typedFilters = listOfNotNull(
                 createAccountMetadataFilter(),
                 createAccountContactListFilter(),
                 createAccountRelayListFilter(),
@@ -227,7 +241,8 @@ object NostrAccountDataSource : NostrDataSource("AccountData") {
                 createAccountReportsFilter(),
                 createAccountAcceptedAwardsFilter(),
                 createAccountBookmarkListFilter(),
-                createAccountLastPostsListFilter()
+                createAccountLastPostsListFilter(),
+                createOtherAccountsBaseFilter()
             ).ifEmpty { null }
         } else {
             // just the basics.

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

@@ -116,7 +116,7 @@ class EventNotificationConsumer(private val applicationContext: Context) {
         // old event being re-broadcast
         if (event.createdAt < TimeUtils.fiveMinutesAgo()) return
 
-        if (acc != null && acc.userProfile().pubkeyHex == event.verifiedRecipientPubKey()) {
+        if (acc.userProfile().pubkeyHex == event.verifiedRecipientPubKey()) {
             val followingKeySet = acc.followingKeySet()
 
             val knownChatrooms = acc.userProfile().privateChatrooms.keys.filter {