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lib/maru/plugs/router.ex

defmodule Maru.Plugs.Router do
alias Maru.Router.Resource
alias Plug.Conn
def init(opts) do
router = opts |> Keyword.fetch! :router
'Elixir.' ++ _ = Atom.to_char_list router
version = opts |> Keyword.fetch! :version
%Resource{path: path, param_context: param_context} = opts |> Keyword.get :resource, %Resource{}
{router, path, version, param_context}
end
def call(%Conn{private: %{maru_version: v1}}=conn_orig, {router, path, v2, param_context})
when is_nil(v2) or v1 == v2 do
%{ maru_resource_path: maru_resource_path,
maru_route_path: maru_route_path,
maru_param_context: maru_param_context
} = conn_orig.private
case Maru.Router.Path.lstrip(maru_resource_path, path) do
nil -> conn_orig
{:ok, rest} ->
conn_orig
|> Conn.put_private(:maru_resource_path, rest)
|> Conn.put_private(:maru_route_path, maru_route_path ++ path)
|> Conn.put_private(:maru_param_context, maru_param_context ++ param_context)
|> router.call([])
|> case do
%Conn{halted: true} = conn -> conn
%Conn{} -> conn_orig
end
end
end
def call(conn, _) do
conn
end
end