architex/lib/matrix_server.ex

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Elixir
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defmodule MatrixServer do
def get_mxid(localpart) when is_binary(localpart) do
"@#{localpart}:#{server_name()}"
end
def server_name do
Application.get_env(:matrix_server, :server_name)
end
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def maybe_update_map(map, old_key, new_key) do
maybe_update_map(map, old_key, new_key, &Function.identity/1)
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end
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def maybe_update_map(map, old_key, new_key, fun) when is_map_key(map, old_key) do
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value = Map.fetch!(map, old_key)
map
|> Map.put(new_key, fun.(value))
|> Map.delete(old_key)
end
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def maybe_update_map(map, _, _, _), do: map
def localpart_regex, do: ~r/^([a-z0-9\._=\/])+$/
@alphabet Enum.into(?a..?z, []) ++ Enum.into(?A..?Z, [])
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def random_string(length), do: random_string(length, @alphabet)
def random_string(length, alphabet) when length >= 1 do
for _ <- 1..length, into: "", do: <<Enum.random(alphabet)>>
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end
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def default_room_version, do: "7"
def get_domain(id) do
case String.split(id, ":") do
[_, server_name] -> server_name
_ -> nil
end
end
# https://elixirforum.com/t/22709/9
def has_duplicates?(list) do
list
|> Enum.reduce_while(%MapSet{}, fn x, acc ->
if MapSet.member?(acc, x), do: {:halt, false}, else: {:cont, MapSet.put(acc, x)}
end)
|> is_boolean()
end
# https://matrix.org/docs/spec/appendices#unpadded-base64
def encode_unpadded_base64(data) do
data
|> Base.encode64()
|> String.trim_trailing("=")
end
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end