Class: Rubee::BaseController

Inherits:
Object
  • Object
show all
Includes:
Hookable
Defined in:
lib/rubee/controllers/base_controller.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Hookable

included

Constructor Details

#initialize(request, route) ⇒ BaseController

Returns a new instance of BaseController.



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# File 'lib/rubee/controllers/base_controller.rb', line 6

def initialize(request, route)
  @request = request
  @route = route
end

Class Method Details

.attach_websocket! ⇒ Object 



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# File 'lib/rubee/controllers/base_controller.rb', line 170

def attach_websocket!
  around(
    :websocket, :handle_websocket,
    if: -> do
      redis_available = Rubee::Features.redis_available?
      Rubee::Logger.error(message: 'Please make sure redis server is running') unless redis_available
      redis_available
    end
  )
end

Instance Method Details

#css ⇒ Object 



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# File 'lib/rubee/controllers/base_controller.rb', line 32

def css
  css_path = File.join(CSS_DIR, @request.path.sub('/css/', ''))

  if File.exist?(css_path) && File.file?(css_path)
    response_with(object: File.read(css_path), type: :css)
  else
    response_with(object: 'Css file is not found', type: :text)
  end
end

#extract_params(path, pattern) ⇒ Object 



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# File 'lib/rubee/controllers/base_controller.rb', line 150

def extract_params(path, pattern)
  regex_pattern = pattern.gsub(/\{(\w+)\}/, '(?<\1>[^/]+)')
  regex = Regexp.new("^#{regex_pattern}$")

  if (match = path.match(regex))
    return match.named_captures&.transform_keys(&:to_sym)
  end

  {}
end

#handle_websocket ⇒ Object 



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# File 'lib/rubee/controllers/base_controller.rb', line 161

def handle_websocket
  res = Rubee::WebSocket.call(@request.env) do |payload|
    @params = payload
    yield
  end
  res
end

#headers ⇒ Object 



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# File 'lib/rubee/controllers/base_controller.rb', line 141

def headers
  @request.env.select { |k, _v| k.start_with?('HTTP_') }
    .collect { |key, val| [key.sub(/^HTTP_/, ''), val] }
end

#image ⇒ Object 



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# File 'lib/rubee/controllers/base_controller.rb', line 11

def image
  image_path = File.join(IMAGE_DIR, @request.path.sub('/images/', ''))

  if File.exist?(image_path) && File.file?(image_path)
    mime_type = Rack::Mime.mime_type(File.extname(image_path))
    response_with(object: File.read(image_path), type: :image, mime_type: mime_type)
  else
    response_with(object: 'Image not found', type: :text)
  end
end

#js ⇒ Object 



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# File 'lib/rubee/controllers/base_controller.rb', line 22

def js
  js_path = File.join(JS_DIR, @request.path.sub('/js/', ''))

  if File.exist?(js_path) && File.file?(js_path)
    response_with(object: File.read(js_path), type: :js)
  else
    response_with(object: 'Js file is not found', type: :text)
  end
end

#params ⇒ Object 



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# File 'lib/rubee/controllers/base_controller.rb', line 115

def params
  raw_input = @request.body&.read&.to_s&.strip
  @request.body.rewind if @request.body.respond_to?(:rewind)

  parsed_input = if raw_input
    begin
      JSON.parse(raw_input)
    rescue StandardError
      begin
        URI.decode_www_form(raw_input).to_h.transform_keys(&:to_sym)
      rescue
        {}
      end
    end
  else
    {}
  end

  # Combine route params, request params, and body
  @params ||= extract_params(@request.path, @route[:path])
    .merge(parsed_input)
    .merge(@request.params)
    .transform_keys(&:to_sym)
    .reject { |k, _v| k.to_sym == :_method }
end

#render_template(file_name, locals = {}, **options) ⇒ Object 



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# File 'lib/rubee/controllers/base_controller.rb', line 98

def render_template(file_name, locals = {}, **options)
  lib = Rubee::PROJECT_NAME == 'rubee' ? 'lib/' : ''
  path = "#{lib}#{options[:app_name] || 'app'}/views/#{file_name}.erb"
  erb_template = ERB.new(File.read(path))

  erb_template.result(binding)
end

#response_with(type: nil, object: nil, status: 200, mime_type: nil, render_view: nil, headers: {}, to: nil, file: nil, filename: nil, **options) ⇒ Object 



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# File 'lib/rubee/controllers/base_controller.rb', line 42

def response_with type: nil, object: nil, status: 200, mime_type: nil, render_view: nil, headers: {}, to: nil,
  file: nil, filename: nil, **options
  case type&.to_sym
  in :json
    rendered_json = object.is_a?(Array) ? object&.map(&:to_h).to_json : object.to_json
    [status, headers.merge('content-type' => 'application/json'), [rendered_json]]
  in :image
    [status, headers.merge('content-type' => mime_type), [object]]
  in :js
    [status, headers.merge('content-type' => 'application/javascript'), [object]]
  in :css
    [status, headers.merge('content-type' => 'text/css'), [object]]
  in :websocket
    object # hash is expected
  in :file
    [
      status,
      headers.merge(
        'content-disposition' => "attachment; filename=#{filename}",
        'content-type' => 'application/octet-stream'
      ),
      file,
    ]
  in :text
    [status, headers.merge('content-type' => 'text/plain'), [object.to_s]]
  in :unauthentificated
    [401, headers.merge('content-type' => 'text/plain'), ['Unauthentificated']]
  in :redirect
    [302, headers.merge('location' => to.to_s), []]
  in :not_found
    [404, { 'content-type' => 'text/plain' }, ['Route not found']]
  else # rendering erb view is a default behavior
    # TODO: refactor
    view_file_name = self.class.name.split('Controller').first.gsub('::', '').snakeize
    erb_file = render_view ? render_view.to_s : "#{view_file_name}_#{@route[:action]}"
    lib = Rubee::PROJECT_NAME == 'rubee' ? 'lib/' : ''
    path_parts = Module.const_source_location(self.class.name)&.first&.split('/')&.reverse
    controller_index = path_parts.find_index { |part| part == 'controllers' }
    app_name = path_parts[controller_index + 1]
    view = render_template(erb_file, { object:, **(options[:locals] || {}) }, app_name:)
    # Since controller sits in the controllers folder we can get parent folder of it and pull out name of the app
    app_name_prefix = app_name == 'app' ? '' : "#{app_name}_"
    layout_path = "#{lib}#{app_name}/views/#{app_name_prefix}#{options[:layout] || 'layout'}.erb"
    whole_erb = if File.exist?(layout_path)
      context = Object.new
      context.define_singleton_method(:_yield_template) { view }
      layout = File.read(layout_path)
      ERB.new(layout).result(context.instance_eval { binding })
    else
      ERB.new(view).result(binding)
    end

    [status, headers.merge('content-type' => 'text/html'), [whole_erb]]
  end
end

#websocket ⇒ Object 



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# File 'lib/rubee/controllers/base_controller.rb', line 106

def websocket
  action = @params[:action]
  unless ['subscribe', 'unsubscribe', 'publish'].include?(action)
    response_with(object: "Unknown action: #{action}", type: :websocket)
  end

  public_send(action)
end

#websocket_connections ⇒ Object 



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# File 'lib/rubee/controllers/base_controller.rb', line 146

def websocket_connections
  Rubee::WebSocketConnections.instance
end