019f8fd211
git-subtree-dir: users/wpcarro git-subtree-mainline:464bbcb15cgit-subtree-split:24f5a642afChange-Id: I6105b3762b79126b3488359c95978cadb3efa789
86 lines
2.1 KiB
Elixir
86 lines
2.1 KiB
Elixir
defmodule Router do
|
|
use Plug.Router
|
|
use Plug.Debugger
|
|
require Logger
|
|
|
|
plug(Plug.Logger, log: :debug)
|
|
plug(Plug.Parsers, parsers: [:urlencoded])
|
|
plug(:match)
|
|
plug(:dispatch)
|
|
|
|
@usage """
|
|
Usage: Try querying some of the following endpoints...
|
|
GET /
|
|
GET /help
|
|
GET /semiprime?number=<integer>
|
|
GET /semiprimes?numbers=<comma-separated-integers>
|
|
"""
|
|
|
|
get "/" do
|
|
send_resp(conn, 200, "Welcome to Semiprimes Service!\n\n#{@usage}")
|
|
end
|
|
|
|
get "/help" do
|
|
send_resp(conn, 200, @usage)
|
|
end
|
|
|
|
get "/semiprime" do
|
|
case conn |> Map.get(:query_params) |> Map.get("number") do
|
|
nil ->
|
|
send_resp(conn, 400, "You must pass an integer as a query parameter. #{@usage}")
|
|
|
|
val ->
|
|
case Integer.parse(val) do
|
|
{n, ""} ->
|
|
send_resp(conn, 200, semiprime_response(n))
|
|
|
|
_ ->
|
|
send_resp(conn, 400, "We could not parse the number you provided.\n\n#{@usage}")
|
|
end
|
|
end
|
|
end
|
|
|
|
get "/semiprimes" do
|
|
case conn |> Map.get(:query_params) |> Map.get("numbers") do
|
|
nil ->
|
|
send_resp(
|
|
conn,
|
|
400,
|
|
"You must pass a comma-separated list of integers as a query parameter.\n\n#{@usage}"
|
|
)
|
|
|
|
xs ->
|
|
response =
|
|
xs
|
|
|> String.split(",")
|
|
|> Stream.map(&Integer.parse/1)
|
|
|> Stream.filter(fn
|
|
{n, ""} -> true
|
|
_ -> false
|
|
end)
|
|
|> Stream.map(fn {n, ""} -> semiprime_response(n) end)
|
|
|> Enum.join("\n")
|
|
|
|
send_resp(conn, 200, response)
|
|
end
|
|
end
|
|
|
|
match _ do
|
|
send_resp(conn, 404, "Not found.")
|
|
end
|
|
|
|
################################################################################
|
|
# Utils
|
|
################################################################################
|
|
|
|
defp semiprime_response(n) do
|
|
case Server.semiprime(n) do
|
|
nil ->
|
|
"#{n} is not a semiprime. Try another number!"
|
|
|
|
{hit_or_miss, factors} ->
|
|
response = "#{n} is a semiprime! Its factors are #{Enum.join(factors, " and ")}."
|
|
"Cache #{Atom.to_string(hit_or_miss)} - #{response}"
|
|
end
|
|
end
|
|
end
|