module Mitamirri

  class LeadsReport

    # Search params
    attr_accessor :site
    attr_accessor :time_period
    attr_accessor :start_date
    attr_accessor :end_date
    
    # Stat attributes
    
    # Initialization
    
    def initialize(args = {})
      args.each{|k,v| self.send("#{k}=",v) if self.respond_to?(k)} 
      self.time_period = args[:time_period] || 'past 6 months'
      self.start_date = self.dates.first
      self.end_date = self.dates.last
    end
    
    # Generate an array of dates spanning the appropriate time period.
    def dates
      return @dates if @dates
      @dates = []
      case self.time_period.downcase
        when 'past month'
          _increment = 4
        when 'past 3 months'
          _increment = 12
        when 'past 6 months'
          _increment = 24
        when 'past 12 months'
          _increment = 52
        else 'all time'
          _increment = 104
      end
      
      (1.._increment).each{ |i| @dates << (Time.zone.now - i.weeks).beginning_of_week }
      @dates.reverse!
      @dates << Time.zone.now
      @dates
    end
    
    # Graphing objects
  
    def leads(args)
      _leads = []
      _leads << Lead.new(:stats => lead_stats(args))
      _leads
    end
    
    def lead_stats(args)
      _lead_stats = []
      dates.each do |date|
        _total_sessions = TrackableSession.search_without_date(args).for_week(date).count
        _total_conversions = TrackableSession.search_without_date(args).for_week(date).with_conversions.count
        _conversion_rate = (_total_conversions.to_f / _total_sessions) * 100
        _lead_stats << LeadStat.new(:date => date, :leads => _total_conversions, :conversion_rate => sprintf("%0.1f",_conversion_rate).to_f)
      end
      _lead_stats
    end
    
    # Inner stat classes
  
    class Lead
      attr_accessor :stats
      def initialize(args)
        args.each{ |k,v| self.send("#{k}=", v) }
      end
    end
    
    class LeadStat
      attr_accessor :date
      attr_accessor :leads
      attr_accessor :conversion_rate
      
      def initialize(args)
        args.each{ |k,v| self.send("#{k}=", v) }
      end
      
      def short_date
        self.date.to_s(:concise)
      end
      
    end
    
  end

end