Fix object/item packets showing sender callsign instead of object name

Objects and items now display with their own names on the map instead of
the originating station's callsign. This prevents confusion where stations
creating objects (like repeaters) appear at multiple locations.

For example, CALGRY creates repeater objects (147.06-WC, 146.85-NH) which
were appearing on the map labeled as "CALGRY" at the repeater locations
instead of showing the actual object names.

Changes:
- Updated map_label() to return object_name for object packets
- Updated map_label() to return item_name for item packets
- Position packets continue to show the sender callsign
- Updated tests to expect object/item names instead of sender

This matches APRS.fi behavior where objects are displayed separately
from their originating station.

lib/aprsme_web/live/shared/packet_utils.ex

@@ -235,18 +235,28 @@ defmodule AprsmeWeb.Live.Shared.PacketUtils do
   @doc """
   Get the map label for a packet.
 
-  For map display, always show the sender callsign regardless of whether
-  it's an object or item packet. This avoids confusion where the map label
-  shows something different from what the user expects (like a balloon ID
-  instead of the station callsign).
+  For objects and items, show the object/item name to distinguish them from
+  the station that created them. For example, a repeater object should show
+  the repeater name, not the station that's reporting it.
 
-  If the packet is an object or item, you can append the object/item name
-  in the popup or detail view.
+  For position packets, show the sender callsign.
   """
   @spec map_label(map()) :: String.t()
   def map_label(packet) do
-    # Always return the sender for map labels
-    get_packet_field(packet, :sender, "")
+    data_type = get_packet_field(packet, :data_type, "")
+
+    cond do
+      data_type == "object" ->
+        object_name = get_packet_field(packet, :object_name, "")
+        if object_name == "", do: get_packet_field(packet, :sender, ""), else: object_name
+
+      data_type == "item" ->
+        item_name = get_packet_field(packet, :item_name, "")
+        if item_name == "", do: get_packet_field(packet, :sender, ""), else: item_name
+
+      true ->
+        get_packet_field(packet, :sender, "")
+    end
   end
 
   defp non_empty_string?(value) when is_binary(value), do: String.trim(value) != ""

test/aprsme_web/live/map_live/data_builder_test.exs

@@ -27,9 +27,9 @@ defmodule AprsmeWeb.MapLive.DataBuilderTest do
       result = DataBuilder.build_packet_data(packet, true)
 
       assert result
-      # Map label shows sender for clarity
-      assert result["callsign"] == "DB0SDA"
-      # But grouping uses object name
+      # Map label shows object name for objects
+      assert result["callsign"] == "P-K5SGD"
+      # Grouping also uses object name
       assert result["callsign_group"] == "P-K5SGD"
     end
 
@@ -56,9 +56,9 @@ defmodule AprsmeWeb.MapLive.DataBuilderTest do
       result = DataBuilder.build_packet_data(packet, true)
 
       assert result
-      # Map label shows sender for clarity
-      assert result["callsign"] == "N0CALL"
-      # But grouping uses item name
+      # Map label shows item name for items
+      assert result["callsign"] == "REPEATER1"
+      # Grouping also uses item name
       assert result["callsign_group"] == "REPEATER1"
     end
 
@@ -111,9 +111,9 @@ defmodule AprsmeWeb.MapLive.DataBuilderTest do
 
       result = DataBuilder.build_packet_data(packet, true)
 
-      # Popup now shows sender for consistency with map label
-      assert result["popup"] =~ "DB0SDA"
-      refute result["popup"] =~ "P-K5SGD"
+      # Popup now shows object name for objects
+      assert result["popup"] =~ "P-K5SGD"
+      refute result["popup"] =~ "DB0SDA"
     end
 
     test "build_minimal_packet_data uses sender for map label but object_name for grouping" do
@@ -139,13 +139,13 @@ defmodule AprsmeWeb.MapLive.DataBuilderTest do
       result = DataBuilder.build_minimal_packet_data(packet, true, false)
 
       assert result
-      # Map label shows sender for clarity
-      assert result["callsign"] == "DB0SDA"
-      # But grouping uses object name
+      # Map label shows object name for objects
+      assert result["callsign"] == "P-K5SGD"
+      # Grouping also uses object name
       assert result["callsign_group"] == "P-K5SGD"
-      # Symbol HTML should show sender, not object name
-      assert result["symbol_html"] =~ "DB0SDA"
-      refute result["symbol_html"] =~ "P-K5SGD"
+      # Symbol HTML should show object name
+      assert result["symbol_html"] =~ "P-K5SGD"
+      refute result["symbol_html"] =~ "DB0SDA"
     end
 
     test "build_minimal_packet_data uses red dot HTML for historical (non-most-recent) packets" do
@@ -338,9 +338,9 @@ defmodule AprsmeWeb.MapLive.DataBuilderTest do
 
       results = DataBuilder.build_packet_data_list([object_packet_1, object_packet_2])
 
-      # Map labels should show sender
+      # Map labels should show object name
       callsigns = Enum.map(results, & &1["callsign"])
-      assert Enum.all?(callsigns, &(&1 == "DB0SDA"))
+      assert Enum.all?(callsigns, &(&1 == "P-K5SGD"))
 
       # But grouping should be by object name
       groups = Enum.map(results, & &1["callsign_group"])
@@ -369,8 +369,8 @@ defmodule AprsmeWeb.MapLive.DataBuilderTest do
 
       popup = DataBuilder.build_simple_popup(packet, false)
 
-      assert popup =~ "WA0YMH-2"
-      refute popup =~ "X3234025"
+      assert popup =~ "X3234025"
+      refute popup =~ "WA0YMH-2"
     end
   end
 end