require 'fiona7/widget_gc/garbage_collector'
require 'fiona7/recursive_object_finder'

module Fiona7
  class ReleaseController < ActionController::Base
    helper_method :current_locale

    def release
      obj_ids = params[:objs]
      objs    = WriteObj.find(obj_ids)
      comment = params[:comment]
      errors  = []

      if !obj_ids.empty?
        main_obj = objs.shift

        carefully_release(errors, main_obj, comment)
        objs.each do |other_obj|
          carefully_release(errors, other_obj, comment)
        end
      end

      if errors.empty?
        render json: {}
      else
        render json: {message: errors.join("\n"), message_for_editor: errors.join("\n")}, status: 412
      end

    rescue => e
      render json: {message: e.message}, status: 500
    end

    def preview
      self.in_rtc_workspace do
        @obj = WriteObj.find(params[:id])
        
        if Fiona7.release_collector && Fiona7.release_collector.respond_to?(:call)
          @groups = Fiona7.release_collector.call(@obj.obj_id)
        else
          @groups = Fiona7::ReleaseCollector.call(@obj.obj_id)
        end


        render "preview", layout: false
      end
    end

    protected
    def current_locale
      Scrivito::Configuration.ui_locale || I18n.locale
    end

    def in_rtc_workspace(&block)
      Scrivito::Workspace.find('rtc').as_current(&block)
    end

    def carefully_release(errors, obj, comment=nil)
      # NOTE: widget garbage collection may be required on release
      # but only for objects which actually contain widgets.
      #
      # TODO: refactor this code!
      if obj.attr_values["X_widget_pool"].present?
        WidgetGc::GarbageCollector.new(obj.id, :release).gc!
      end

      if obj.really_edited?
        # we don't care much if this fails
        obj.take
        obj.release!(comment) 
        ::Fiona7.run_callbacks(:release_obj, obj.id)
      end

      complex_object = Fiona7::ComplexObject.new(obj)
      complex_object.widgets.each do |widget_obj|
        begin
          widget_obj.take
          widget_obj.release!(comment) if widget_obj.really_edited?
        rescue => e
          Rails.logger.error("Error occured when releasing #{obj.id}: unable to release Object with ID #{widget_obj.id} (#{widget_obj.path} because: #{e.inspect}")
          # TODO: translate
          error = "Unable to release Object with ID #{widget_obj.id} because: #{e.message}"
          errors << error
        end
      end
      #complex_object.binaries.each do |widget_obj|
      #  widget_obj.take
      #  widget_obj.release!(comment)
      #end
    rescue => e
      Rails.logger.error("Error occured when releasing #{obj.id}: unable to release Object with ID #{obj.id} (#{obj.path} because: #{e.inspect}")

      # TODO: translate
      error = "Unable to release Object with ID #{obj.id} because: #{e.message}"
      errors << error
    end

  end
end