xpath = "//Link[@rel='lrdd' and @type='application/xrd+xml']/@template"
with doc when doc != :error <- XML.parse_document(body),
template when template != nil <- XML.string_from_xpath(xpath, doc) do
{:ok, template}
end
end
def find_lrdd_template(domain) do
with {:ok, %{status_code: status_code, body: body}} when status_code in 200..299 <- @httpoison.get("http://#{domain}/.well-known/host-meta", [], follow_redirect: true) do
get_template_from_xml(body)
else
_ ->
with {:ok, %{body: body}} <- @httpoison.get("https://#{domain}/.well-known/host-meta", []) do
get_template_from_xml(body)
else
e -> {:error, "Can't find lrdd template: #{inspect(e)}"}
end
end
end
def finger(account) do
domain = with [_name, domain] <- String.split(account, "@") do
domain
else _e ->
URI.parse(account).host
end
with {:ok, template} <- find_lrdd_template(domain),