# -*- encoding : utf-8 -*-
class CelTable < ActiveRecord::Base
  belongs_to :table_row
  #belongs_to :table_content possible
  
  has_one :block, :as => :blockable, :dependent => :destroy
  
  attr_accessor :skip_before_update




	before_create do
		if !position
			self.position = 1
		end
		if position
			CelTable.find(:all, :conditions => ["position >= ? and table_row_id = ?",self.position,self.table_row_id]).each do |cel_table|
				cel_table.position = cel_table.position + 1
				cel_table.skip_before_update = true
				cel_table.save!
			end
		end
		
		
		
	end
	
	after_create do 
		block = Block.create()
	
		self.block = block
	end

	before_update do
		if !skip_before_update
			if self.position_changed?
				#si la position est plus grande que l'ancienne
				if self.changes['position'][1] > self.changes['position'][0]
					CelTable.find(:all, :conditions => ["position > ? and position <= ? and table_row_id = ?",self.changes['position'][0],self.changes['position'][1],self.table_row_id]).each do |cel_table|
						cel_table.position = cel_table.position - 1
						cel_table.skip_before_update = true
						cel_table.save!
					end
				end
				#si la position est plus petite que l'ancienne.	
				if self.changes['position'][1] < self.changes['position'][0]
					CelTable.find(:all, :conditions => ["position >= ? and position < ? and table_row_id = ?",self.changes['position'][1],self.changes['position'][0],self.table_row_id]).each do |cel_table|
						cel_table.position = cel_table.position + 1
						cel_table.skip_before_update = true
						cel_table.save!
					end	
				end 
			end
		end
	end

	before_destroy do
		CelTable.find(:all, :conditions => ["position > ? and table_row_id = ?",self.position,self.table_row_id]).each do |cel_table|
			cel_table.position = cel_table.position - 1
			cel_table.skip_before_update = true
			cel_table.save!
		end

	end
	
	def dup
		@new = CelTable.new(self.attributes)
		@new.id = nil
		@new.table_row_id = nil
		@new.save
		
		@new.block.destroy
	
			
			new_b = self.block.dup
			
		

			new_b.save
			@new.block = new_b
			@new.save
		
		@new
		
	end
	
	
  
end