Moves the creation of Draft Notes to the IO Thread

app/src/main/java/com/vitorpamplona/amethyst/ui/note/NoteCompose.kt

@@ -39,7 +39,6 @@ import androidx.compose.runtime.derivedStateOf
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.livedata.observeAsState
 import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.produceState
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.ui.Alignment
@@ -54,6 +53,7 @@ import androidx.compose.ui.unit.dp
 import androidx.lifecycle.distinctUntilChanged
 import androidx.lifecycle.map
 import com.vitorpamplona.amethyst.R
+import com.vitorpamplona.amethyst.commons.compose.produceCachedStateAsync
 import com.vitorpamplona.amethyst.model.Channel
 import com.vitorpamplona.amethyst.model.FeatureSetType
 import com.vitorpamplona.amethyst.model.Note
@@ -724,16 +724,8 @@ fun ObserveDraftEvent(
     val noteState by note.live().metadata.observeAsState()
 
     val noteEvent = noteState?.note?.event as? DraftEvent ?: return
-    val noteAuthor = noteState?.note?.author ?: return
 
-    val innerNote =
-        produceState(initialValue = accountViewModel.createTempCachedDraftNote(noteEvent, noteAuthor), noteEvent.id) {
-            if (value == null || value?.event?.id() != noteEvent.id) {
-                accountViewModel.createTempDraftNote(noteEvent, noteAuthor) {
-                    value = it
-                }
-            }
-        }
+    val innerNote = produceCachedStateAsync(cache = accountViewModel.draftNoteCache, key = noteEvent)
 
     innerNote.value?.let {
         render(it)

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

@@ -38,6 +38,7 @@ import coil.request.ImageRequest
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.ServiceManager
 import com.vitorpamplona.amethyst.commons.compose.GenericBaseCache
+import com.vitorpamplona.amethyst.commons.compose.GenericBaseCacheAsync
 import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.model.AccountState
 import com.vitorpamplona.amethyst.model.AddressableNote
@@ -1335,9 +1336,6 @@ class AccountViewModel(val account: Account, val settings: SettingsState) : View
         onReady: (Note) -> Unit,
     ) {
         viewModelScope.launch(Dispatchers.IO) {
-            noteEvent.cachedDraft(account.signer) {
-                onReady(createTempDraftNote(it, author))
-            }
         }
     }
 
@@ -1355,6 +1353,21 @@ class AccountViewModel(val account: Account, val settings: SettingsState) : View
         return note
     }
 
+    val draftNoteCache = CachedDraftNotes(this)
+
+    class CachedDraftNotes(val accountViewModel: AccountViewModel) : GenericBaseCacheAsync<DraftEvent, Note>(20) {
+        override suspend fun compute(
+            key: DraftEvent,
+            onReady: (Note?) -> Unit,
+        ) = withContext(Dispatchers.IO) {
+            key.cachedDraft(accountViewModel.account.signer) {
+                val author = LocalCache.getOrCreateUser(key.pubKey)
+                val note = accountViewModel.createTempDraftNote(it, author)
+                onReady(note)
+            }
+        }
+    }
+
     val bechLinkCache = CachedLoadedBechLink(this)
 
     class CachedLoadedBechLink(val accountViewModel: AccountViewModel) : GenericBaseCache<String, LoadedBechLink>(20) {