Class: I18nFeedback::Middleware

Inherits:
Object
  • Object
show all
Defined in:
lib/i18n_feedback/middleware.rb

Overview

Runs on every request to (1) flip key-marking on for the duration of the request when a proofreader has the tool switched on, and (2) inject the widget into HTML responses so the host needs no layout changes. Both are strictly gated by I18nFeedback.available?, so nothing happens in a disabled environment.

Constant Summary collapse 

'i18n_feedback'

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ Middleware

Returns a new instance of Middleware.



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# File 'lib/i18n_feedback/middleware.rb', line 13

def initialize(app)
  @app = app
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/i18n_feedback/middleware.rb', line 17

def call(env)
  request = Rack::Request.new(env)
  available = I18nFeedback.available?(request)

  # "?i18n_feedback=true|false" is a one-shot command, not a sticky URL state:
  # set the cookie and redirect to the same URL without the parameter. That
  # keeps the cookie the single source of truth (so the pill's reload can turn
  # suggest mode off) and stops the parameter from lingering in the address bar.
  if available && request.get? && !(desired = toggle_override(request)).nil?
    return toggle_redirect(request, desired)
  end

  marking = available && cookie_on?(request)
  Marking.enabled = marking

  status, headers, body = @app.call(env)

  if available && I18nFeedback.config.auto_inject && html?(headers) && !request.xhr?
    status, headers, body = inject(status, headers, body, marking, csp_nonce(env))
  end

  [status, headers, body]
ensure
  Marking.enabled = false
end