#--
# Copyright (C) 2007 Dimitrij Denissenko
# Please read LICENSE document for more information.
#++
class TimelineController < ProjectAreaController
  retrospectiva_extension('timeline')

  require_permission(
    :view_timeline => ['index']
  )

  def index   
    @date = Date.civil(
      params[:date][:year].to_i,
      params[:date][:month].to_i,
      params[:date][:day].to_i
    ) rescue Date.today

    @days_back = params[:days_back] && params[:days_back].to_i.between?(1, 99) ? params[:days_back].to_i : 7

    @viewable_classes = Acts::Previewable.previewable_classes.select do |klass| 
      klass.previewable.viewable?(User.current)
    end    

    results = []
    @viewable_classes.each do |klass|
      if (params[:all] == '1' || params[klass.table_name] == '1')
        results += find_records(klass)
      end
    end

    @records = results.collect{|r| r.previewable }.group_by do |record|
      time = record.date
      Date.civil(time.year, time.month, time.day)
    end     
    @dates = @records.keys.sort {|a,b| b <=> a}
  end

  private

    def find_records(klass)
      options = klass.previewable.find_options || {}
      options[:conditions] ||= '1=1'
      options[:conditions] = [options[:conditions]].flatten
               
      options[:conditions].first << " AND #{klass.table_name}.#{klass.previewable.date_column} BETWEEN ? AND ?"
      options[:conditions] += [@date - @days_back, @date]
        
      options[:order] ||= "#{klass.table_name}.#{klass.previewable.date_column} DESC"
      
      klass.with_scope(:find => klass.previewable.project_scope) do
        klass.find(:all, options)
      end
    end    
  
end