add stored packet count

lib/aprs/is/is.ex

@@ -106,7 +106,8 @@ defmodule Aprs.Is do
           uptime_seconds: 0,
           login_id: Application.get_env(:aprs, :aprs_is_login_id, "W5ISP"),
           filter: Application.get_env(:aprs, :aprs_is_default_filter, "r/33/-96/100"),
-          packet_stats: default_packet_stats()
+          packet_stats: default_packet_stats(),
+          stored_packet_count: Aprs.Packets.get_total_packet_count()
         }
 
       _pid ->
@@ -126,7 +127,8 @@ defmodule Aprs.Is do
               uptime_seconds: 0,
               login_id: Application.get_env(:aprs, :aprs_is_login_id, "W5ISP"),
               filter: Application.get_env(:aprs, :aprs_is_default_filter, "r/33/-96/100"),
-              packet_stats: default_packet_stats()
+              packet_stats: default_packet_stats(),
+              stored_packet_count: Aprs.Packets.get_total_packet_count()
             }
         end
     end
@@ -189,7 +191,8 @@ defmodule Aprs.Is do
       uptime_seconds: DateTime.diff(DateTime.utc_now(), state.connected_at),
       login_id: state.login_params.user_id,
       filter: state.login_params.filter,
-      packet_stats: state.packet_stats
+      packet_stats: state.packet_stats,
+      stored_packet_count: Aprs.Packets.get_total_packet_count()
     }
 
     {:reply, status, state}

lib/aprs/packets.ex

@@ -259,6 +259,13 @@ defmodule Aprs.Packets do
 
   defp limit_results(query, _), do: query
 
+  @doc """
+  Gets the total count of stored packets in the database.
+  """
+  def get_total_packet_count do
+    Repo.one(from p in Packet, select: count(p.id))
+  end
+
   @doc """
   Configure packet retention policy.
 

lib/aprs/passcode.ex

@@ -0,0 +1,55 @@
+defmodule Aprs.Passcode do
+  @moduledoc """
+  Module for generating APRS passcodes from callsigns.
+  The passcode is a hash of the callsign used for authentication with APRS-IS servers.
+  """
+
+  @doc """
+  Generates an APRS passcode for a given callsign.
+
+  ## Parameters
+    - callsign: The amateur radio callsign (e.g., "W5ISP")
+
+  ## Returns
+    - The generated passcode as an integer
+
+  ## Examples
+      iex> Aprs.Passcode.generate("W5ISP")
+      12345
+  """
+  def generate(callsign) when is_binary(callsign) do
+    # Split on '-' and take first part, uppercase, and limit to 10 chars
+    realcall =
+      callsign
+      |> String.split("-")
+      |> List.first()
+      |> String.upcase()
+      |> String.slice(0, 10)
+
+    # Convert string to charlist for easier processing
+    chars = String.to_charlist(realcall)
+
+    # Initial hash value
+    hash = 0x73E2
+
+    # Process characters in pairs
+    hash =
+      Enum.reduce_every(chars, 2, hash, fn [char1, char2], acc ->
+        acc
+        |> Bitwise.bxor(Bitwise.bsl(char1, 8))
+        |> Bitwise.bxor(char2)
+      end)
+
+    # Handle odd length callsigns
+    hash =
+      if rem(length(chars), 2) == 1 do
+        last_char = List.last(chars)
+        Bitwise.bxor(hash, Bitwise.bsl(last_char, 8))
+      else
+        hash
+      end
+
+    # Return final hash masked to 15 bits
+    Bitwise.band(hash, 0x7FFF)
+  end
+end

lib/aprs_web/live/status_live/index.ex

@@ -172,7 +172,7 @@ defmodule AprsWeb.StatusLive.Index do
     <!-- Packet Statistics -->
               <div class="mt-4 pt-4 border-t border-gray-200">
                 <h3 class="text-sm font-medium text-gray-700 mb-3">Packet Statistics</h3>
-                <div class="grid grid-cols-1 md:grid-cols-3 gap-4">
+                <div class="grid grid-cols-1 md:grid-cols-4 gap-4">
                   <div class="flex items-center">
                     <span class="text-sm font-medium text-gray-500 mr-2">Total Packets:</span>
                     <span class="text-sm text-gray-900 font-mono">
@@ -197,6 +197,13 @@ defmodule AprsWeb.StatusLive.Index do
                       <% end %>
                     </span>
                   </div>
+
+                  <div class="flex items-center">
+                    <span class="text-sm font-medium text-gray-500 mr-2">Stored Packets:</span>
+                    <span class="text-sm text-gray-900 font-mono">
+                      {format_number(@aprs_status.stored_packet_count)}
+                    </span>
+                  </div>
                 </div>
               </div>
               

test/aprs/passcode_test.exs

@@ -0,0 +1,22 @@
+defmodule Aprs.PasscodeTest do
+  use ExUnit.Case
+  doctest Aprs.Passcode
+
+  describe "generate/1" do
+    test "generates correct passcode for W5ISP" do
+      assert Aprs.Passcode.generate("W5ISP") == 15748
+    end
+
+    test "handles callsigns with SSIDs" do
+      assert Aprs.Passcode.generate("W5ISP-1") == 15748
+    end
+
+    test "handles lowercase callsigns" do
+      assert Aprs.Passcode.generate("w5isp") == 15748
+    end
+
+    test "handles long callsigns" do
+      assert Aprs.Passcode.generate("W5ISP-LONG") == 15748
+    end
+  end
+end