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lib/nerves_hub_link/extensions/geo/geo.ex
# SPDX-FileCopyrightText: 2024 Jon Carstens
# SPDX-FileCopyrightText: 2024 Lars Wikman
#
# SPDX-License-Identifier: Apache-2.0
#
defmodule NervesHubLink.Extensions.Geo do
@moduledoc """
The Geo Extension.
Provides geo-location information to NervesHub.
"""
use NervesHubLink.Extensions, name: "geo", version: "0.0.1"
alias NervesHubLink.Extensions.Geo.DefaultResolver
require Logger
@impl GenServer
def init(_opts) do
# Does not send an initial report, server reports one
{:ok, %{}}
end
@impl NervesHubLink.Extensions
def handle_event("location:request", _msg, state) do
_ = location_update()
{:noreply, state}
end
defp location_update() do
push("location:update", resolve_location())
end
defp resolve_location() do
resolver = resolver()
case resolver.resolve_location() do
{:ok, result} ->
Logger.debug(
"[#{inspect(__MODULE__)}] Location resolution completed successfully using #{inspect(resolver)}"
)
result
{:error, code, description} ->
Logger.debug(
"[#{inspect(__MODULE__)}] Error resolving location using #{inspect(resolver)} : (#{code}) #{description}"
)
%{error_code: code, error_description: description}
end
end
defp resolver() do
resolver = Application.get_env(:nerves_hub_link, :geo, [])[:resolver] || DefaultResolver
if function_exported?(resolver, :resolve_location, 0), do: resolver, else: DefaultResolver
end
end