Class: Calculator

Inherits:
Object
  • Object
show all
Defined in:
lib/git_heat/calculator.rb

Constant Summary collapse

HALF_LIFE = 
60.0*60*24

Instance Method Summary collapse

Constructor Details

#initialize(time) ⇒ Calculator 



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# File 'lib/git_heat/calculator.rb', line 4

def initialize(time)
  @time = time
end

Instance Method Details

#go(stats) ⇒ Object 



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# File 'lib/git_heat/calculator.rb', line 8

def go(stats)
  heat = {}
  stats.each do |commit|
    time_delta = @time - commit[:time]
    unless commit[:affected_files]
      next
    end
    commit[:affected_files].each do |file|
      impact = (file[:insertions] + file[:deletions]).to_f
      heat[file[:file]] ||= 0
      heat[file[:file]] += impact*(0.5**(time_delta/HALF_LIFE))
    end
  end
  heat.sort_by {|_key, value| value}.reverse
end