ui cleanup

app/src/main/java/com/bitchat/android/nostr/LocationNotesCounter.kt

@@ -51,31 +51,51 @@ object LocationNotesCounter {
     
     /**
      * Subscribe to count notes for a specific geohash
+     * iOS: Validates building-level precision (8 chars) and checks for relay availability
      */
     fun subscribe(geohash: String) {
-        if (_geohash.value == geohash && subscriptionID != null) {
-            Log.d(TAG, "Already subscribed to geohash: $geohash")
+        val normalized = geohash.lowercase()
+        
+        // Skip if already subscribed to this geohash
+        if (_geohash.value == normalized && subscriptionID != null) {
+            Log.d(TAG, "Already subscribed to geohash: $normalized")
             return
         }
         
-        Log.d(TAG, "Subscribing to count notes for geohash: $geohash")
+        // Validate geohash (building-level precision: 8 chars) - matches iOS
+        if (!isValidBuildingGeohash(normalized)) {
+            Log.w(TAG, "LocationNotesCounter: rejecting invalid geohash '$normalized' (expected 8 valid base32 chars)")
+            return
+        }
         
-        // Cancel existing subscription
-        cancel()
+        Log.d(TAG, "Subscribing to count notes for geohash: $normalized")
+        
+        // Unsubscribe previous without clearing count to avoid flicker (iOS pattern)
+        subscriptionID?.let { subId ->
+            unsubscribeFunc?.invoke(subId)
+        }
+        subscriptionID = null
         
         // Reset state
-        _geohash.value = geohash
-        _count.value = 0
+        _geohash.value = normalized
         eventIDs.clear()
         _initialLoadComplete.value = false
+        _relayAvailable.value = true
         
-        // Check relay availability
-        val relayManager = relayLookup?.invoke()
-        val hasRelays = relayManager?.getRelayStatuses()?.any { it.isConnected } == true
-        _relayAvailable.value = hasRelays
+        // Get geo-specific relays (iOS pattern: dependencies.relayLookup(norm, TransportConfig.nostrGeoRelayCount))
+        val relays = try {
+            com.bitchat.android.nostr.RelayDirectory.closestRelaysForGeohash(normalized, 5)
+        } catch (e: Exception) {
+            Log.e(TAG, "Failed to lookup relays for geohash $normalized: ${e.message}")
+            emptyList()
+        }
         
-        if (!hasRelays) {
-            Log.w(TAG, "No relays available for counter subscription")
+        // Check if we have relays (iOS pattern: guard !relays.isEmpty())
+        if (relays.isEmpty()) {
+            Log.w(TAG, "LocationNotesCounter: no geo relays for geohash=$normalized")
+            _relayAvailable.value = false
+            _initialLoadComplete.value = true
+            _count.value = 0
             return
         }
         
@@ -86,15 +106,16 @@ object LocationNotesCounter {
         }
         
         val filter = NostrFilter.geohashNotes(
-            geohash = geohash,
+            geohash = normalized,
             since = null,
             limit = 200 // Count up to 200 recent notes
         )
         
-        val subId = "location-notes-count-$geohash"
+        // iOS format: "locnotes-count-\(norm)-\(UUID().uuidString.prefix(6))"
+        val subId = "locnotes-count-$normalized-${java.util.UUID.randomUUID().toString().take(6)}"
         
         subscriptionID = subscribe(filter, subId) { event ->
-            handleEvent(event, geohash)
+            handleEvent(event, normalized)
         }
         
         // Mark initial load complete after brief delay
@@ -107,6 +128,15 @@ object LocationNotesCounter {
         }
     }
     
+    /**
+     * Validate building-level geohash (precision 8) - matches iOS Geohash.isValidBuildingGeohash
+     */
+    private fun isValidBuildingGeohash(geohash: String): Boolean {
+        if (geohash.length != 8) return false
+        val base32Chars = "0123456789bcdefghjkmnpqrstuvwxyz"
+        return geohash.all { it in base32Chars }
+    }
+    
     /**
      * Handle incoming event
      */

app/src/main/java/com/bitchat/android/nostr/LocationNotesManager.kt

@@ -38,10 +38,19 @@ class LocationNotesManager private constructor() {
         val nickname: String?
     ) {
         /**
-         * Display name for the note (nickname or truncated pubkey)
+         * Display name for the note - matches iOS exactly
+         * Format: "nickname#abcd" or "anon#abcd" where abcd is last 4 chars of pubkey
          */
         val displayName: String
-            get() = nickname ?: "@${pubkey.take(8)}"
+            get() {
+                val suffix = pubkey.takeLast(4)
+                val nick = nickname?.trim()
+                return if (!nick.isNullOrEmpty()) {
+                    "$nick#$suffix"
+                } else {
+                    "anon#$suffix"
+                }
+            }
     }
     
     /**
@@ -103,29 +112,50 @@ class LocationNotesManager private constructor() {
     
     /**
      * Set geohash and start subscription
+     * iOS: Validates building-level precision (8 characters)
      */
     fun setGeohash(newGeohash: String) {
-        if (_geohash.value == newGeohash) {
-            Log.d(TAG, "Geohash unchanged, skipping: $newGeohash")
+        val normalized = newGeohash.lowercase()
+        
+        if (_geohash.value == normalized) {
+            Log.d(TAG, "Geohash unchanged, skipping: $normalized")
             return
         }
         
-        Log.d(TAG, "Setting geohash: $newGeohash")
+        // Validate geohash (building-level precision: 8 chars) - matches iOS
+        if (!isValidBuildingGeohash(normalized)) {
+            Log.w(TAG, "LocationNotesManager: rejecting invalid geohash '$normalized' (expected 8 valid base32 chars)")
+            return
+        }
+        
+        Log.d(TAG, "Setting geohash: $normalized")
         
         // Cancel existing subscription
         cancel()
         
-        // Clear state
-        _notes.value = emptyList()
-        noteIDs.clear()
+        // Set loading state before clearing to prevent empty state flicker (iOS pattern)
+        _state.value = State.LOADING
         _initialLoadComplete.value = false
         _errorMessage.value = null
-        _geohash.value = newGeohash
+        
+        // Clear notes
+        _notes.value = emptyList()
+        noteIDs.clear()
+        _geohash.value = normalized
         
         // Start new subscription
         subscribe()
     }
     
+    /**
+     * Validate building-level geohash (precision 8) - matches iOS Geohash.isValidBuildingGeohash
+     */
+    private fun isValidBuildingGeohash(geohash: String): Boolean {
+        if (geohash.length != 8) return false
+        val base32Chars = "0123456789bcdefghjkmnpqrstuvwxyz"
+        return geohash.all { it in base32Chars }
+    }
+    
     /**
      * Refresh notes for current geohash
      */

app/src/main/java/com/bitchat/android/ui/LocationNotesSheet.kt

@@ -454,7 +454,7 @@ private fun ErrorRow(message: String, onDismiss: () -> Unit) {
 }
 
 /**
- * Input section - matches iOS inputSection exactly
+ * Input section - matches main chat input exactly
  */
 @Composable
 private fun LocationNotesInputSection(
@@ -466,61 +466,82 @@ private fun LocationNotesInputSection(
     onSend: () -> Unit
 ) {
     val isDark = isSystemInDarkTheme()
+    val colorScheme = MaterialTheme.colorScheme
     
     Row(
         modifier = Modifier
             .fillMaxWidth()
             .background(backgroundColor)
-            .padding(horizontal = 16.dp, vertical = 14.dp),
-        horizontalArrangement = Arrangement.SpaceBetween,
-        verticalAlignment = Alignment.Top
+            .padding(horizontal = 12.dp, vertical = 8.dp), // Match main chat padding
+        verticalAlignment = Alignment.CenterVertically,
+        horizontalArrangement = Arrangement.spacedBy(8.dp) // Match main chat spacing
     ) {
-        // Text field
-        TextField(
-            value = draft,
-            onValueChange = onDraftChange,
-            modifier = Modifier.weight(1f),
-            placeholder = {
+        // Text input with placeholder overlay (matches main chat exactly)
+        Box(
+            modifier = Modifier.weight(1f)
+        ) {
+            androidx.compose.foundation.text.BasicTextField(
+                value = draft,
+                onValueChange = onDraftChange,
+                textStyle = MaterialTheme.typography.bodyMedium.copy(
+                    color = colorScheme.primary,
+                    fontFamily = FontFamily.Monospace
+                ),
+                cursorBrush = androidx.compose.ui.graphics.SolidColor(colorScheme.primary),
+                keyboardOptions = androidx.compose.foundation.text.KeyboardOptions(
+                    imeAction = androidx.compose.ui.text.input.ImeAction.Send
+                ),
+                keyboardActions = androidx.compose.foundation.text.KeyboardActions(
+                    onSend = { if (sendButtonEnabled) onSend() }
+                ),
+                modifier = Modifier.fillMaxWidth()
+            )
+            
+            // Placeholder when empty (matches main chat)
+            if (draft.isEmpty()) {
                 Text(
                     text = "add a note for this place",
-                    fontFamily = FontFamily.Monospace,
-                    fontSize = 14.sp,
-                    color = MaterialTheme.colorScheme.onSurface.copy(alpha = 0.4f)
+                    style = MaterialTheme.typography.bodyMedium.copy(
+                        fontFamily = FontFamily.Monospace
+                    ),
+                    color = colorScheme.onSurface.copy(alpha = 0.5f),
+                    modifier = Modifier.fillMaxWidth()
                 )
-            },
-            textStyle = androidx.compose.ui.text.TextStyle(
-                fontFamily = FontFamily.Monospace,
-                fontSize = 14.sp,
-                color = MaterialTheme.colorScheme.onSurface
-            ),
-            colors = TextFieldDefaults.colors(
-                focusedContainerColor = Color.Transparent,
-                unfocusedContainerColor = Color.Transparent,
-                disabledContainerColor = Color.Transparent,
-                focusedIndicatorColor = Color.Transparent,
-                unfocusedIndicatorColor = Color.Transparent,
-                disabledIndicatorColor = Color.Transparent,
-                cursorColor = MaterialTheme.colorScheme.primary
-            ),
-            maxLines = 3
-        )
+            }
+        }
         
-        Spacer(modifier = Modifier.width(10.dp))
-        
-        // Send button - iOS arrow.up.circle.fill icon
-        Box(
-            modifier = Modifier
-                .padding(top = 2.dp)
-                .size(20.dp)
-                .clickable(enabled = sendButtonEnabled, onClick = onSend),
-            contentAlignment = Alignment.Center
+        // Send button - circular with icon (matches main chat exactly)
+        IconButton(
+            onClick = { if (sendButtonEnabled) onSend() },
+            enabled = sendButtonEnabled,
+            modifier = Modifier.size(32.dp)
         ) {
-            Icon(
-                imageVector = Icons.Default.ArrowUpward,
-                contentDescription = "Send",
-                tint = if (sendButtonEnabled) accentGreen else MaterialTheme.colorScheme.onSurface.copy(alpha = 0.6f),
-                modifier = Modifier.size(20.dp)
-            )
+            Box(
+                modifier = Modifier
+                    .size(30.dp)
+                    .background(
+                        color = if (!sendButtonEnabled) {
+                            colorScheme.onSurface.copy(alpha = 0.3f)
+                        } else {
+                            accentGreen.copy(alpha = 0.75f)
+                        },
+                        shape = CircleShape
+                    ),
+                contentAlignment = Alignment.Center
+            ) {
+                Icon(
+                    imageVector = Icons.Filled.ArrowUpward,
+                    contentDescription = "Send",
+                    modifier = Modifier.size(20.dp),
+                    tint = if (!sendButtonEnabled) {
+                        colorScheme.onSurface.copy(alpha = 0.5f)
+                    } else if (isDark) {
+                        Color.Black // Black arrow on green in dark theme
+                    } else {
+                        Color.White // White arrow on green in light theme
+                    }
+                )
+            }
         }
     }
 }