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islands_engine lib islands engine app.ex
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lib/islands/engine/app.ex

defmodule Islands.Engine.App do
use Application
use PersistConfig
alias __MODULE__
alias Islands.Engine.Board.Server
alias Islands.Engine.Sup
@ets Application.get_env(@app, :ets_name)
# @reg Application.get_env(@app, :registry)
@error_path Application.get_env(:logger, :error_log)[:path]
@info_path Application.get_env(:logger, :info_log)[:path]
@warn_path Application.get_env(:logger, :warn_log)[:path]
@spec start(Application.start_type(), term) :: {:ok, pid}
def start(_type, :ok) do
[@error_path, @info_path, @warn_path] |> Enum.each(&clear_log/1)
:ets.new(@ets, [:public, :named_table])
[
# Child spec relying on use Supervisor...
{Sup, :ok},
# Child spec relying on use GenServer...
{Server, :ok}
]
|> Supervisor.start_link(name: App, strategy: :one_for_one)
end
## Private functions
defp clear_log(log_path) do
path = Path.expand(log_path)
case File.write(path, "") do
:ok ->
:ok
{:error, reason} ->
IO.puts("Couldn't clear log #{inspect(path)}:")
reason |> :file.format_error() |> IO.puts()
end
end
end