Graham McIntire
6988116a42
The IPGeolocation plug was setting session data, but the live_session wasn't forwarding it to the LiveView mount. Also removed the root-path restriction so geolocation works on any initial page load.
36 lines
1 KiB
Elixir
36 lines
1 KiB
Elixir
defmodule AprsmeWeb.Plugs.IPGeolocation do
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@moduledoc """
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Plug that extracts geolocation from Cloudflare's CF-IPLatitude and CF-IPLongitude
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headers on initial page load. Results are stored in the session to avoid repeated parsing.
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"""
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@behaviour Plug
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import Plug.Conn
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@impl true
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def init(opts), do: opts
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@impl true
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def call(%{method: "GET"} = conn, _opts) do
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conn
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|> get_session(:ip_geolocation)
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|> handle_geolocation(conn)
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end
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def call(conn, _opts), do: conn
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defp handle_geolocation(nil, conn), do: extract_cf_headers(conn)
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defp handle_geolocation(_cached, conn), do: conn
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defp extract_cf_headers(conn) do
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with [lat_str] <- get_req_header(conn, "cf-iplatitude"),
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[lng_str] <- get_req_header(conn, "cf-iplongitude"),
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{lat, ""} <- Float.parse(lat_str),
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{lng, ""} <- Float.parse(lng_str),
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true <- lat >= -90 and lat <= 90 and lng >= -180 and lng <= 180 do
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put_session(conn, :ip_geolocation, %{"lat" => lat, "lng" => lng})
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else
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_ -> conn
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end
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end
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end
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