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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Config do
   6   defmodule Error do
   7     defexception [:message]
   8   end
   9
  10   def get(key), do: get(key, nil)
  11
  12   def get([key], default), do: get(key, default)
  13
  14   def get([parent_key | keys], default) do
  15     Application.get_env(:pleroma, parent_key)
  16     |> get_in(keys) || default
  17   end
  18
  19   def get(key, default) do
  20     Application.get_env(:pleroma, key, default)
  21   end
  22
  23   def get!(key) do
  24     value = get(key, nil)
  25
  26     if value == nil do
  27       raise(Error, message: "Missing configuration value: #{inspect(key)}")
  28     else
  29       value
  30     end
  31   end
  32
  33   def put([key], value), do: put(key, value)
  34
  35   def put([parent_key | keys], value) do
  36     parent =
  37       Application.get_env(:pleroma, parent_key)
  38       |> put_in(keys, value)
  39
  40     Application.put_env(:pleroma, parent_key, parent)
  41   end
  42
  43   def put(key, value) do
  44     Application.put_env(:pleroma, key, value)
  45   end
  46
  47   def delete([key]), do: delete(key)
  48
  49   def delete([parent_key | keys]) do
  50     {_, parent} =
  51       Application.get_env(:pleroma, parent_key)
  52       |> get_and_update_in(keys, fn _ -> :pop end)
  53
  54     Application.put_env(:pleroma, parent_key, parent)
  55   end
  56
  57   def delete(key) do
  58     Application.delete_env(:pleroma, key)
  59   end
  60 end