class Apicraft::Web::App

def self.authorized?(env)
  auth = Rack::Auth::Basic::Request.new(env)
  username, password = auth.provided? && auth.basic? && auth.credentials
  @use&.call(username, password).present?
end

def self.call(env)
  return unauthorized_response unless authorized?(env)
  uri = env["REQUEST_URI"]
  method = env["REQUEST_METHOD"]
  Router.namespace = env["SCRIPT_NAME"]
  path = uri.split(
    Router.namespace
  )[-1] || "/"
  content, content_type = Router.load_response!(
    method, path
  )
  raise Errors::RouteNotFound if content.nil?
  [
    200,
    { 'Content-Type': content_type },
    [content]
  ]
rescue Errors::RouteNotFound
  [
    404,
    { 'Content-Type': "text/plain" },
    ["Error: not found"]
  ]
rescue StandardError => e
  [
    500,
    { 'Content-Type': "text/plain" },
    ["Error: #{e.message}"]
  ]
end

def self.unauthorized_response
  [
    401,
    {
      "Content-Type": "text/plain",
      "WWW-Authenticate": "Basic realm=\"Restricted Area\""
    },
    ["Unauthorized"]
  ]
end

def self.use(&block)
  @use = block
end