module Concen
  class PagesController < ApplicationController
    layout "concen/application"

    before_filter :authenticate_concen_user

    def index
      @page_title = "Pages"
      @page = Page.where(:level => 0).first
    end

    def new
      if params[:parent_id]
        @page = Page.find(params[:parent_id]).children.build
      else
        @page = Page.new
      end
    end

    def create
      @page = Page.new(params[:concen_page])
      @page.authors = [current_concen_user.username]
      if @page.save
        redirect_to(edit_concen_page_path(@page), :notice => "Page was successfully created.")
      else
        render :new
      end
    end

    def edit
      @page = Page.find(params[:id])
      unless current_concen_user.full_control || @page.authors_as_user.include?(current_concen_user)
        flash[:notice] = "Only author can edit page."
        redirect_to concen_pages_path
      end
    end

    def update
      @page = Page.find(params[:id])
      if current_concen_user.full_control || @page.authors_as_user.include?(current_concen_user)
        if @page.update_attributes(params[:concen_page])
          redirect_to(edit_concen_page_path(@page), :notice => "Page was successfully created.")
        else
          render :edit
        end
      else
        render :edit, :notice => "Only author can modify page content."
      end
    end

    def destroy
      if current_concen_user.full_control || @page.authors_as_user.include?(current_concen_user)
        @page = Page.find(params[:id])
        @page.destroy
        redirect_to concen_pages_path
      else
        flash[:notice] = "Only author can delete page."
        redirect_to concen_pages_path
      end
    end

    def sort
      if params[:page]
        if current_concen_user.full_control
          child_count = {}
          params[:page].each do |key, value|
            if value == "root"
              root = Page.find(key)
              root.parent_id = nil
              root.level = 0
              root.save
            else
              child = Page.find(key)
              parent = Page.find(value)
              child.parent_id = parent.id
              child.level = parent.level + 1
              if child_count[value]
                child.position = child_count[value] + 1
                child_count[value] += 1
              else
                child.position = 1
                child_count[value] = 1
              end
              child.save
            end
          end
          render :json => {:success => true}
        else
          render :json => {:success => false, :message => "Only user with full control can sort pages."}
        end
      end
    end
  end
end