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# frozen_string_literal: true
require "rails/application_controller"
class Rails::MailersController < Rails::ApplicationController # :nodoc:
prepend_view_path ActionDispatch::DebugView::RESCUES_TEMPLATE_PATH
before_action :require_local!, unless: :show_previews?
before_action :find_preview, :set_locale, only: :preview
helper_method :part_query, :locale_query
content_security_policy(false)
def index
@previews = ActionMailer::Preview.all
@page_title = "Mailer Previews"
end
def preview
if params[:path] == @preview.preview_name
@page_title = "Mailer Previews for #{@preview.preview_name}"
render action: "mailer"
else
@email_action = File.basename(params[:path])
if @preview.email_exists?(@email_action)
@email = @preview.call(@email_action, params)
if params[:part]
part_type = Mime::Type.lookup(params[:part])
if part = find_part(part_type)
response.content_type = part_type
render plain: part.respond_to?(:decoded) ? part.decoded : part
else
raise AbstractController::ActionNotFound, "Email part '#{part_type}' not found in #{@preview.name}##{@email_action}"
end
else
@part = find_preferred_part(request.format, Mime[:html], Mime[:text])
render action: "email", layout: false, formats: [:html]
end
else
raise AbstractController::ActionNotFound, "Email '#{@email_action}' not found in #{@preview.name}"
end
end
end
private
def show_previews? # :doc:
ActionMailer::Base.show_previews
end
def find_preview # :doc:
candidates = []
params[:path].to_s.scan(%r{/|$}) { candidates << $` }
preview = candidates.detect { |candidate| ActionMailer::Preview.exists?(candidate) }
if preview
@preview = ActionMailer::Preview.find(preview)
else
raise AbstractController::ActionNotFound, "Mailer preview '#{params[:path]}' not found"
end
end
def find_preferred_part(*formats) # :doc:
formats.each do |format|
if part = @email.find_first_mime_type(format)
return part
end
end
if formats.any? { |f| @email.mime_type == f }
@email
end
end
def find_part(format) # :doc:
if part = @email.find_first_mime_type(format)
part
elsif @email.mime_type == format
@email
end
end
def part_query(mime_type)
request.query_parameters.merge(part: mime_type).to_query
end
def locale_query(locale)
request.query_parameters.merge(locale: locale).to_query
end
def set_locale
I18n.locale = params[:locale] || I18n.default_locale
end
end
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