require 'open_food_network/order_cycle_permissions'
require 'open_food_network/order_cycle_form_applicator'

module Admin
  class OrderCyclesController < ResourceController
    include OrderCyclesHelper

    prepend_before_filter :load_data_for_index, :only => :index
    before_filter :require_coordinator, only: :new
    before_filter :remove_protected_attrs, only: [:update]
    before_filter :remove_unauthorized_bulk_attrs, only: [:bulk_update]
    around_filter :protect_invalid_destroy, only: :destroy

    def index
      respond_to do |format|
        format.html
        format.json do
          render_as_json @collection, ams_prefix: params[:ams_prefix], current_user: spree_current_user
        end
      end
    end

    def show
      respond_to do |format|
        format.html
        format.json do
          render_as_json @order_cycle, current_user: spree_current_user
        end
      end
    end

    def new
      respond_to do |format|
        format.html
        format.json do
          render_as_json @order_cycle, current_user: spree_current_user
        end
      end
    end

    def create
      @order_cycle = OrderCycle.new(params[:order_cycle])

      respond_to do |format|
        if @order_cycle.save
          OpenFoodNetwork::OrderCycleFormApplicator.new(@order_cycle, spree_current_user).go!

          flash[:notice] = I18n.t(:order_cycles_create_notice)
          format.html { redirect_to admin_order_cycles_path }
          format.json { render :json => {:success => true} }
        else
          format.html
          format.json { render :json => {:success => false} }
        end
      end
    end

    def update
      @order_cycle = OrderCycle.find params[:id]

      respond_to do |format|
        if @order_cycle.update_attributes(params[:order_cycle])
          unless params[:order_cycle][:incoming_exchanges].nil? && params[:order_cycle][:outgoing_exchanges].nil?
            # Only update apply exchange information if it is actually submmitted
            OpenFoodNetwork::OrderCycleFormApplicator.new(@order_cycle, spree_current_user).go!
          end
          flash[:notice] = I18n.t(:order_cycles_update_notice) if params[:reloading] == '1'
          format.html { redirect_to main_app.edit_admin_order_cycle_path(@order_cycle) }
          format.json { render :json => {:success => true}  }
        else
          format.json { render :json => {:success => false} }
        end
      end
    end

    def bulk_update
      @order_cycle_set = params[:order_cycle_set] && OrderCycleSet.new(params[:order_cycle_set])
      if @order_cycle_set.andand.save
        redirect_to main_app.admin_order_cycles_path, notice: I18n.t(:order_cycles_bulk_update_notice)
      else
        render :index
      end
    end

    def clone
      @order_cycle = OrderCycle.find params[:id]
      @order_cycle.clone!
      redirect_to main_app.admin_order_cycles_path, notice: I18n.t(:order_cycles_clone_notice, name: @order_cycle.name)
    end

    # Send notifications to all producers who are part of the order cycle
    def notify_producers
      Delayed::Job.enqueue OrderCycleNotificationJob.new(params[:id].to_i)

      redirect_to main_app.admin_order_cycles_path, notice: I18n.t(:order_cycles_email_to_producers_notice)
    end


    protected
    def collection
      ocs = if params[:as] == "distributor"
        OrderCycle.ransack(params[:q]).result.
          involving_managed_distributors_of(spree_current_user).order('updated_at DESC')
      elsif params[:as] == "producer"
        OrderCycle.ransack(params[:q]).result.
          involving_managed_producers_of(spree_current_user).order('updated_at DESC')
      else
        OrderCycle.ransack(params[:q]).result.accessible_by(spree_current_user)
      end

      ocs.undated +
        ocs.soonest_closing +
        ocs.soonest_opening +
        ocs.closed
    end

    def collection_actions
      [:index, :bulk_update]
    end

    private
    def load_data_for_index
      @show_more = !!params[:show_more]
      unless @show_more || params[:q].andand[:orders_close_at_gt].present?
        # Split ransack params into all those that currently exist and new ones to limit returned ocs to recent or undated
        params[:q] = {
          g: [ params.delete(:q) || {}, { m: 'or', orders_close_at_gt: 31.days.ago, orders_close_at_null: true } ]
        }
      end
      @order_cycle_set = OrderCycleSet.new :collection => (@collection = collection)
    end

    def require_coordinator
      if params[:coordinator_id] && @order_cycle.coordinator = permitted_coordinating_enterprises_for(@order_cycle).find_by_id(params[:coordinator_id])
        return
      end

      available_coordinators = permitted_coordinating_enterprises_for(@order_cycle).select(&:confirmed?)
      case available_coordinators.count
      when 0
        flash[:error] = I18n.t(:order_cycles_no_permission_to_coordinate_error)
        redirect_to main_app.admin_order_cycles_path
      when 1
        @order_cycle.coordinator = available_coordinators.first
      else
        flash[:error] = I18n.t(:order_cycles_no_permission_to_create_error) if params[:coordinator_id]
        render :set_coordinator
      end
    end

    def protect_invalid_destroy
      begin
        yield
      rescue ActiveRecord::InvalidForeignKey
        redirect_to main_app.admin_order_cycles_url
        flash[:error] = I18n.t(:order_cycles_no_permission_to_delete_error)
      end
    end

    def remove_protected_attrs
      params[:order_cycle].delete :coordinator_id

      unless Enterprise.managed_by(spree_current_user).include?(@order_cycle.coordinator)
        params[:order_cycle].delete_if{ |k,v| [:name, :orders_open_at, :orders_close_at].include? k.to_sym }
      end
    end

    def remove_unauthorized_bulk_attrs
      if params.key? :order_cycle_set
        params[:order_cycle_set][:collection_attributes].each do |i, hash|
          order_cycle = OrderCycle.find(hash[:id])
          unless Enterprise.managed_by(spree_current_user).include?(order_cycle.andand.coordinator)
            params[:order_cycle_set][:collection_attributes].delete i
          end
        end
      end
    end

    def ams_prefix_whitelist
      [:basic]
    end
  end
end