Class: Menilite::Router

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

Instance Method Summary collapse

Constructor Details

#initializeRouter

Returns a new instance of Router.



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# File 'lib/menilite/server/router.rb', line 23

def initialize
  @classes = []

  ObjectSpace.each_object(Class) do |klass|
    @classes << klass if klass.subclass_of?(Menilite::Model, false)
    @classes << klass if klass.subclass_of?(Menilite::Controller, false)
    @classes << klass if klass.subclass_of?(Menilite::Privilege, false)
  end
end

Instance Method Details

#before_action_handlers(klass, action) ⇒ Object



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# File 'lib/menilite/server/router.rb', line 33

def before_action_handlers(klass, action)
  @handlers ||= @classes.select{|c| c.subclass_of?(Menilite::Controller) }.map{|c| c.before_action_handlers }.flatten

  handlers = @handlers.select do |c|
    next true unless c[:options].has_key?(:include)
    [c[:options][:include]].flatten.any? do |includes|
      (classname, _, name) = includes.to_s.partition(?#)
      (classname == klass.name) && (name.empty? || name == action.to_s)
    end
  end

  handlers.reject do |c|
    [c[:options][:exclude]].flatten.any? do |exclude|
      (classname, _, name) = exclude.to_s.partition(?#)
      (classname == klass.name) && (name.empty? || name == action.to_s)
    end
  end
end

#routes(settings) ⇒ Object



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# File 'lib/menilite/server/router.rb', line 52

def routes(settings)
  classes = @classes
  router = self
  Sinatra.new do
    def with_error_handler(&block)
      block.call
    rescue Menilite::ErrorWithStatusCode => e
      content_type :json
      status e.code
      { result: 'error', message: e.message }.to_json
    rescue Menilite::ValidationError => e
      content_type :json
      status 403
      { result: 'validation_error', message: e.message, messages: e.messages }.to_json
    rescue => e
      puts e.message
      puts e.backtrace
      content_type :json
      status 500
      { result: 'error', message: e.message }.to_json
    end

    configure do
      enable :sessions
    end

    classes.each do |klass|
      case
      when klass.subclass_of?(Menilite::Model)
        klass.init
        resource_name = klass.name
        get "/#{resource_name}" do
          with_error_handler do
            PrivilegeService.init
            router.before_action_handlers(klass, 'index').each {|h| self.instance_eval(&h[:proc]) }
            order = params.delete('order')&.split(?,)
            includes = params.delete('includes')
            data = klass.fetch(filter: params, order: order, includes: includes)
            json Serializer.serialize(data, includes)
          end
        end

        get "/#{resource_name}/:id" do
          with_error_handler do
            PrivilegeService.init
            router.before_action_handlers(klass, 'get').each {|h| self.instance_eval(&h[:proc]) }
            includes = params.delete('includes')
            json Serializer.serialize(klass[params[:id]], includes)
          end
        end

        post "/#{resource_name}" do
          PrivilegeService.init
          router.before_action_handlers(klass, 'post').each {|h| self.instance_eval(&h[:proc]) }
          includes = params.delete('includes')
          data = JSON.parse(request.body.read)
          results = data.map do |model|
            instance = klass.new model.map{|key, value| [key.to_sym, value] }.to_h
            instance.save
            instance
          end

          json Serializer.serialize(results, includes)
        end

        delete "/#{resource_name}" do
          PrivilegeService.init
          router.before_action_handlers(klass, 'delete').each {|h| self.instance_eval(&h[:proc]) }
          params = JSON.parse(request.body.read)
          results = klass.fetch(filter: params).map do |model|
            model.delete
            model
          end

          json Serializer.serialize(results)
        end

        klass.action_info.each do |name, action|
          path = action.options[:save] || action.options[:class] ? "/#{resource_name}/#{action.name}" : "/#{resource_name}/#{action.name}/:id"

          post path do
            with_error_handler do
              PrivilegeService.init
              router.before_action_handlers(klass, action.name).each {|h| self.instance_eval(&h[:proc]) }
              data = JSON.parse(request.body.read)
              result = if action.options[:save]
                         klass.new(data["model"]).tap do |model|
                           model.send(action.name, *data["args"])
                           model.save
                         end
                       elsif action.options[:class]
                         klass.send(action.name, *data["args"])
                       else
                         klass[params[:id]].send(action.name, *data["args"])
                       end
              if result.kind_of?(Menilite::Model)
                json Serializer.serialize(result)
              elsif result.is_a?(Array)
                json result.map{|x| x.kind_of?(Menilite::Model) ? Serializer.serialize(x) : x }
              else
                json result
              end
            end
          end
        end
      when klass.subclass_of?(Menilite::Controller)
        klass.action_info.each do |name, action|
          path = klass.respond_to?(:namespace) ? "/#{klass.namespace}/#{action.name}" : "/#{action.name}"
          post path do
            with_error_handler do
              PrivilegeService.init
              router.before_action_handlers(klass, action.name).each {|h| self.instance_eval(&h[:proc]) }
              data = JSON.parse(request.body.read)
              controller = klass.new(session, settings)
              result = controller.send(action.name, *data["args"])
              json result
            end
          end
        end
      end
    end
  end
end