defmodule UrlFetcher.Http.MockServer do
@moduledoc """
Mock server
## Routes
- `/test` generates an html response page. Takes two query params:
- links: list of link urls to embed in the html response body
- assets: list of img urls to embed in the html response body
- `/failure` generates an http error response. Takes one optional query param:
- status: http status code to be returned
- `/redirect` generates an http 301 redirect response. Takes one query param:
- page: absolute url of page to be redirected to
"""
use Plug.Router
plug(:match)
plug(:dispatch)
get "/test" do
conn =
conn
|> fetch_query_params()
query_params = %{"assets" => [], "links" => []} |> Map.merge(conn.query_params)
success(conn, query_params["links"], query_params["assets"])
end
get "/failure" do
conn =
conn
|> fetch_query_params()
case conn.query_params do
%{"status" => status} -> failure(conn, status |> String.to_integer())
_ -> failure(conn, :bad_request)
end
end
get "/redirect" do
conn =
conn
|> fetch_query_params()
case conn.query_params do
%{"page" => page} -> redirect(conn, page)
_ -> failure(conn, :bad_request)
end
end
defp redirect(conn, page) do
conn
|> Plug.Conn.put_resp_header("Location", page)
|> Plug.Conn.send_resp(:moved_permanently, "")
|> halt()
end
defp success(conn, links, assets) do
conn
|> Plug.Conn.send_resp(:ok, html(links, assets))
end
defp failure(conn, status) do
conn
|> Plug.Conn.send_resp(status, "")
end
defp html(links, assets) do
links_html =
links
|> Enum.map(&link(&1))
assets_html =
assets
|> Enum.map(&image(&1))
"""
#{links_html}#{assets_html}
"""
end
defp link(url) do
"link"
end
defp image(url) do
"![](\"#{url}\")
"
end
end