defmodule Xmeta.Xapi.Phx do
  
  def call_api(conn, params) do
    site = module_name_upcase(params["xapi_site"])
    router = module_name_upcase(params["xapi_router"])
    view = module_name_upcase(params["xapi_view"])
    mod =
      Module.concat(["Xapi", site, router, view])
    apply(mod, :call, [conn, format_params(conn.params)])
  end

  defp format_params(params) do
    params 
      |> Map.delete("glob") 
      |>Map.delete("xapi_site") 
      |>Map.delete("xapi_router") 
      |>Map.delete("xapi_view") 
  end

  defp module_name_upcase(name) do
    {first,last} = String.next_grapheme(name)  
    String.upcase(first) <> last
  end

end