class StatisticsController < ApplicationController
  before_filter :authenticate_user!
  
  def index
    @statistics = Statistic.find(:all, :order => 'created_at DESC').paginate(:page => params[:page], :per_page => 15)
  end

  def show
    @statistic = Statistic.where(:id => params[:id]).first
  end

  def generate_single
    stat = Statistic.new(:type => "posts_per_day")
    (0..15).each do |n|
      data_point = DataPoint.users_with_posts_today(n)
      data_point.save
      stat.data_points << data_point
    end
    stat.compute_average
    stat.save!
    stat
    redirect_to stat
  end

  def graph
    @statistic = Statistic.where(:id => params[:id]).first
    send_data(@statistic.generate_graph, 
            :disposition => 'inline', 
            :type => 'image/png', 
            :filename => "stats.png")
  end
end