Class: FunApi::Router

Inherits:
Object
  • Object
show all
Defined in:
lib/funapi/router.rb

Defined Under Namespace

Classes: Route

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Router

Returns a new instance of Router.



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# File 'lib/funapi/router.rb', line 7

def initialize
  @routes = []
end

Instance Attribute Details

#routes ⇒ Object (readonly)

Returns the value of attribute routes.



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# File 'lib/funapi/router.rb', line 11

def routes
  @routes
end

Instance Method Details

#add(verb, path, metadata: {}, &handler) ⇒ Object 



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# File 'lib/funapi/router.rb', line 13

def add(verb, path, metadata: {}, &handler)
  keys = []

  regex = if path == "/"
    "/"
  else
    path.split("/").map do |seg|
      if seg.start_with?(":")
        keys << seg.delete_prefix(":")
        "([^/]+)"
      else
        Regexp.escape(seg)
      end
    end.join("/")
  end

  route_metadata = metadata.merge(path_template: path)
  @routes << Route.new(verb.upcase, /\A#{regex}\z/, keys, handler, route_metadata)
end

#call(env) ⇒ Object 



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# File 'lib/funapi/router.rb', line 33

def call(env)
  req = Rack::Request.new(env)
  route = @routes.find { |r| r.verb == req.request_method && r.pattern =~ req.path_info }
  return [404, {"content-type" => "application/json"}, [JSON.dump(error: "Not found")]] unless route

  match = route.pattern.match(req.path_info)
  params = route.keys.zip(match.captures).to_h
  route.handler.call(req, params)
end