require 'micropub'

module Micropub::Server::Rails
  class Middleware
    def initialize(app)
      @app = app
    end

    def call(env)
      if env["PATH_INFO"] == "/micropub"
        token = Micropub::Token.new(auth_token(env))
        token.valid? ? response : error_response
      else
        @app.call env
      end
    end

    def auth_token(env)
      input = env["HTTP_AUTHORIZATION"] || request(env).params["access_token"] || ""
      input.split("Bearer ").last
    end

    def response
      [201, headers, body]
    end

    def error_response
      [401, {}, body]
    end

    def body
      [""]
    end

    def request(env)
      Rack::Request.new(env)
    end

    def headers
      {
        "Location"     => "http://bookisworthy.com/posts/1",
        "Content-Type" => "text/plain; charset=utf-8"
      }
    end
  end
end