Class: GitFit::Dedup::FieldElector

Inherits:
Object
  • Object
show all
Defined in:
lib/git_fit/dedup/field_elector.rb

Constant Summary collapse

FIELD_ELECTION_RULES = 
{
  distance: :median,
  moving_time: :min,
  elapsed_time: :max,
  average_heartrate: :mean,
  max_heartrate: :max,
  average_power: :non_null,
  max_power: :non_null,
  average_cadence: :non_null,
  max_cadence: :non_null,
  summary_polyline: :best_polyline,
  elevation_gain: :median,
  calories: :median,
  average_temperature: :non_null,
  average_speed: :computed,
  name: :best_name,
  start_date: :earliest,
}.freeze
SOURCE_NAME_PRIORITY = 
{
  garmin: 1, strava: 2, igpsport: 3, xoss: 4,
  keep: 5, xingzhe: 6, apple_health: 7
}.freeze

Instance Method Summary collapse

Instance Method Details

#elect(field, values, sources = []) ⇒ Object 



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# File 'lib/git_fit/dedup/field_elector.rb', line 32

def elect(field, values, sources = [])
  rule = FIELD_ELECTION_RULES[field]
  non_nil = values.compact
  return nil if non_nil.empty?

  case rule
  when :median
    sorted = non_nil.sort
    sorted[sorted.size / 2]
  when :mean
    non_nil.sum / non_nil.size
  when :min
    non_nil.min
  when :max
    non_nil.max
  when :non_null
    non_nil.first
  when :best_polyline
    candidates = non_nil.select { |v| v.is_a?(String) && !v.empty? }
    return nil if candidates.empty?
    candidates.max_by { |v| decode_polyline_size(v) }
  when :computed
    nil
  when :best_name
    best_name(values, sources)
  when :earliest
    non_nil.min_by do |v|
      Time.parse(v.to_s)
    rescue StandardError
      Time.at(0)
    end
  else
    non_nil.first
  end
end