Business logic for determining IAC flight K values

k_values_for

  def k_values_for(jCat, jFlt, jPilot)
    if (jCat == 1) # primary has no free
      jFlt = 1
    end
    if (jCat == 2)  # sportsman has no unknown
      jFlt = 2 if 2 < jFlt
    end
    case jFlt
    when 2 # free
      nodes = @document.find("/ContestResults/Pilots/Category[@CategoryID=#{jCat}]/Pilot[@PilotID=#{jPilot}]/FreestyleKs")
      if (nodes.length == 0)
        nodes = @document.find("/ContestResults/KnownKFactors/Category[@CategoryID=#{jCat}]")
      end
    when 3 # unknown
      nodes = @document.find("/ContestResults/UnKnownKFactors/One/Category[@CategoryID=#{jCat}]")
    when 4 # unknown II
      nodes = @document.find("/ContestResults/UnKnownKFactors/Two/Category[@CategoryID=#{jCat}]")
    else # known
      nodes = @document.find("/ContestResults/KnownKFactors/Category[@CategoryID=#{jCat}]")
    end
    nodes && nodes.first ? nodes.first.inner_xml : ''
  end