73 lines
1.9 KiB
Elixir
73 lines
1.9 KiB
Elixir
defmodule ChronoscopeWeb.API.V1.Gemini.ConnectionController do
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use ChronoscopeWeb, :controller
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require Logger
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alias Chronoscope.Gemini
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@default_port 1965
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@default_path "/"
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@max_host_length 255
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@gemini Application.compile_env(:chronoscope, :gemini, Gemini)
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def get(conn, %{"host" => host, "port" => port, "path" => path}) do
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try do
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handle_get(conn, %{host: host, port: String.to_integer(port), path: path})
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rescue
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ArgumentError -> bad_request_response(conn, "invalid port")
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end
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end
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def get(conn, %{"host" => host, "path" => path}) do
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handle_get(conn, %{host: host, port: @default_port, path: path})
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end
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def get(conn, %{"host" => host, "port" => port}) do
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try do
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handle_get(conn, %{host: host, port: String.to_integer(port), path: @default_path})
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rescue
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ArgumentError -> bad_request_response(conn, "invalid port")
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end
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end
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def get(conn, %{"host" => host}) do
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handle_get(conn, %{host: host, port: @default_port, path: @default_path})
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end
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def get(conn, _params) do
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bad_request_response(conn, "missing host")
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end
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defp handle_get(conn, %{host: host, port: port, path: path}) when port > 0 and port < 65536 do
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case connect(host, port, path) do
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{:ok, response} ->
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json(conn, %{status: :ok, response: format_response(response)})
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{:error, error} ->
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json(conn, %{status: :error, reason: to_string(error)})
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end
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end
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defp handle_get(conn, _params) do
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bad_request_response(conn, "port out of range")
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end
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defp connect(host, port, path) do
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# TODO - max path length
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host
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|> String.slice(0, @max_host_length)
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|> @gemini.connect(port, path)
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end
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defp format_response(response) do
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Map.take(response, [:status, :mime_type, :body])
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end
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defp bad_request_response(conn, message) do
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conn
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|> put_status(:bad_request)
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|> json(%{error: message})
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end
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end
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