module Ecoportal
  module API
    class V2
      class Page
        class Component
          class ActionField < Page::Component
            passthrough :create_actions
            passthrough :required_number_of_completed_actions
            passthrough :permits_and_rules_integration, :add_subscribed, :add_subscribed_to_tasks

            embeds_many :actions, klass: "Ecoportal::API::V2::Page::Component::Action", order_key: :weight

            # Adds a task with `name` short description
            # @return [Ecoportal::API::V2::Page::Component::Action]
            def add_task (name)
              task_doc = actions.items_class.new_doc
              actions.upsert!(task_doc) do |task|
                task.name = name
                if prev = previous_task(task)
                  task.weight = prev.weight
                end
                yield(task) if block_given?
                fix_task_weights!
              end
            end

            def ordered_tasks
              actions.each_with_index.sort_by do |task, index|
                (task.weight >= 9999) ? [index, index] : [task.weight, index]
              end.map(&:first)
            end

            private

            def fix_task_weights!
              ordered_tasks.each_with_index do |task, index|
                task.weight = index
              end
            end

            def previous_task(value)
              tasks = ordered_tasks
              pos  = tasks.index(value) - 1
              return if pos < 0
              tasks[pos]
            end
          end
        end
      end
    end
  end
end

require 'ecoportal/api/v2/page/component/action'