YaleSTC/shifts

class LocationsController < ApplicationController
  layout 'shifts'

  before_filter :find_allowed_locations, except: :display_report_items
  before_filter :loc_group_exists? , except: :display_report_items

  def index
    redirect_to access_denied_path if current_user.loc_groups_to_admin(@department).empty?
    @location = Location.new #for embedded form at page bottom
  end

  def show
    @location = Location.find(params[:id])
    redirect_to access_denied_path unless @locations.include?(@location)
  end

  def new
    @location = Location.new
  end

  def create
    @location = Location.new(params[:location])
    if !current_user.loc_groups_to_admin(@department).include?(@location.loc_group)
      flash[:error] = "You do not have permission to create locations in that location group."
      redirect_to action: "new"
    elsif @location.save
      flash[:notice] = "Successfully created location."
      redirect_to department_locations_path(current_department)
    else
      render action: 'new'
    end
  end

  def edit
    @location = Location.find(params[:id])
    redirect_to access_denied_path unless @locations.include?(@location)
  end

  def update
    @location = Location.find(params[:id])
    redirect_to access_denied_path unless @locations.include?(@location)
    if @location.update_attributes(params[:location])
      flash[:notice] = "Successfully updated location."
      redirect_to @location
    else
      render action: 'edit'
    end
  end

  def toggle
    @location = Location.find(params[:id])
    ActiveRecord::Base.transaction do
      if @location.active
        @location.deactivate
      else
        @location.activate
      end
    end
    flash[:notice] = "Changed activation status of " + @location.name.to_s + "."
    respond_to do |format|
      format.js
      format.html {redirect_to notices_path}
    end
  end

  def destroy
     @location = Location.find(params[:id])
     redirect_to access_denied_path unless @locations.include?(@location)
     @location.destroy
     flash[:notice] = "Successfully destroyed location."
     redirect_to department_locations_path(current_department)
   end


  def display_report_items
    @location = Location.find(params[:id])
    if params[:more_items] == nil
      session[:items] = 0 
    end
    item_number = find_item_number + 5
    session[:items] = item_number
    @report_items = ReportItem.in_location(@location).last(item_number).reverse
    respond_to do |format|
      format.js { @report_items }
      format.html { } #this is necessary!
    end
  end

private
  def find_item_number
     session[:items] ||= 0
  end

  def find_allowed_locations
    @locations = current_user.loc_groups_to_admin(@department).map{|lg| lg.locations}.flatten
  end

  def loc_group_exists?
    if @department.loc_groups.blank?
      redirect_to department_loc_groups_path(@department)
      flash[:notice] = "You do not have admin permission of any Location Groups"
    end
  end

end