67 lines
1.6 KiB
Elixir
67 lines
1.6 KiB
Elixir
defmodule AprsmeWeb.MapLive.RfPath do
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@moduledoc """
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Handles RF path parsing and visualization for APRS packets.
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"""
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alias Aprsme.CachedQueries
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alias AprsmeWeb.MapLive.Utils
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@doc """
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Parse RF path string to extract digipeater/igate stations.
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"""
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@spec parse_rf_path(binary()) :: list(binary())
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def parse_rf_path(path) when is_binary(path) do
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path
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|> String.split(",")
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|> Enum.map(&String.trim/1)
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|> Enum.map(&extract_callsign_from_path_element/1)
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|> Enum.filter(&(&1 != ""))
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|> Enum.uniq()
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end
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def parse_rf_path(_), do: []
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@doc """
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Get positions for path stations from the database.
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"""
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@spec get_path_station_positions(list(binary()), Phoenix.LiveView.Socket.t()) :: list(map())
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def get_path_station_positions(path_stations, _socket) do
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# Limit to prevent excessive database queries
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limited_stations = Enum.take(path_stations, 10)
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limited_stations
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|> Enum.map(&get_station_position/1)
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|> Enum.filter(& &1)
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end
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defp extract_callsign_from_path_element(element) do
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# Remove asterisk (used flag) and extract callsign
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element
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|> String.replace("*", "")
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|> String.trim()
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|> String.upcase()
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|> validate_path_callsign()
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end
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defp validate_path_callsign(callsign) do
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if Utils.valid_callsign?(callsign) do
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callsign
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else
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""
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end
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end
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defp get_station_position(callsign) do
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case CachedQueries.get_latest_packet_for_callsign_cached(callsign) do
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%{lat: lat, lon: lon} when is_number(lat) and is_number(lon) ->
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%{
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callsign: callsign,
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lat: lat,
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lng: lon
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}
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_ ->
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nil
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end
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end
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end
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