Moves Zap amount Calculations to IO Thread

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

@@ -72,7 +72,9 @@ import com.vitorpamplona.amethyst.ui.actions.NewPostView
 import com.vitorpamplona.amethyst.ui.actions.SaveButton
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import com.vitorpamplona.amethyst.ui.theme.BitcoinOrange
+import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 import java.math.BigDecimal
 import java.math.RoundingMode
 
@@ -99,7 +101,9 @@ fun ReactionsRow(baseNote: Note, accountViewModel: AccountViewModel) {
     }
 
     Row(
-        modifier = Modifier.padding(top = 8.dp).fillMaxWidth(),
+        modifier = Modifier
+            .padding(top = 8.dp)
+            .fillMaxWidth(),
         verticalAlignment = Alignment.CenterVertically,
         horizontalArrangement = Arrangement.SpaceBetween
     ) {
@@ -350,7 +354,12 @@ fun ZapReaction(
                                 .show()
                         }
                     } else if (account.zapAmountChoices.size == 1) {
-                        accountViewModel.zap(baseNote, account.zapAmountChoices.first() * 1000, "", context) {
+                        accountViewModel.zap(
+                            baseNote,
+                            account.zapAmountChoices.first() * 1000,
+                            "",
+                            context
+                        ) {
                             scope.launch {
                                 Toast
                                     .makeText(context, it, Toast.LENGTH_SHORT)
@@ -405,8 +414,16 @@ fun ZapReaction(
         }
     }
 
+    var zapAmount by remember { mutableStateOf<BigDecimal?>(null) }
+
+    LaunchedEffect(key1 = zappedNote) {
+        withContext(Dispatchers.IO) {
+            zapAmount = zappedNote?.zappedAmount()
+        }
+    }
+
     Text(
-        showAmount(zappedNote?.zappedAmount()),
+        showAmount(zapAmount),
         fontSize = 14.sp,
         color = MaterialTheme.colors.onSurface.copy(alpha = 0.32f),
         modifier = textModifier

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

@@ -9,9 +9,13 @@ import androidx.compose.material.Divider
 import androidx.compose.material.MaterialTheme
 import androidx.compose.material.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.livedata.observeAsState
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalContext
@@ -31,6 +35,8 @@ import com.vitorpamplona.amethyst.ui.screen.loggedIn.UnfollowButton
 import com.vitorpamplona.amethyst.ui.theme.BitcoinOrange
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import java.math.BigDecimal
 
 @Composable
 fun ZapNoteCompose(baseNote: Pair<Note, Note>, accountViewModel: AccountViewModel, navController: NavController) {
@@ -88,15 +94,20 @@ fun ZapNoteCompose(baseNote: Pair<Note, Note>, accountViewModel: AccountViewMode
                     )
                 }
 
-                val amount =
+                var zapAmount by remember { mutableStateOf<BigDecimal?>(null) }
-                    (noteZap.event as? LnZapEvent)?.amount
+
+                LaunchedEffect(key1 = noteZap) {
+                    withContext(Dispatchers.IO) {
+                        zapAmount = (noteZap.event as? LnZapEvent)?.amount
+                    }
+                }
 
                 Column(
                     modifier = Modifier.padding(start = 10.dp),
                     verticalArrangement = Arrangement.Center
                 ) {
                     Text(
-                        "${showAmount(amount)} ${stringResource(R.string.sats)}",
+                        "${showAmount(zapAmount)} ${stringResource(R.string.sats)}",
                         color = BitcoinOrange,
                         fontSize = 20.sp,
                         fontWeight = FontWeight.W500

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

@@ -89,6 +89,8 @@ import com.vitorpamplona.amethyst.ui.screen.UserFeedView
 import com.vitorpamplona.amethyst.ui.theme.BitcoinOrange
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import java.math.BigDecimal
 
 @OptIn(ExperimentalPagerApi::class)
 @Composable
@@ -210,9 +212,20 @@ fun ProfileScreen(userId: String?, accountViewModel: AccountViewModel, navContro
                             },
                             {
                                 val userState by baseUser.live().zaps.observeAsState()
-                                val userZaps = userState?.user?.zappedAmount()
+                                val userZaps = userState?.user
 
-                                Text(text = "${showAmount(userZaps)} ${stringResource(id = R.string.zaps)}")
+                                var zapAmount by remember { mutableStateOf<BigDecimal?>(null) }
+
+                                LaunchedEffect(key1 = userState) {
+                                    withContext(Dispatchers.IO) {
+                                        val tempAmount = userZaps?.zappedAmount()
+                                        withContext(Dispatchers.Main) {
+                                            zapAmount = tempAmount
+                                        }
+                                    }
+                                }
+
+                                Text(text = "${showAmount(zapAmount)} ${stringResource(id = R.string.zaps)}")
                             },
                             {
                                 val userState by baseUser.live().reports.observeAsState()