module SplitBuilder

# File lib/split-builder.rb, line 31
def dump_alternatives(alternatives)
  alternatives.map do |options|
    {
      :name => options.fetch(:name).to_s,
      :percent => options.fetch(:percent, 50)
    }
  end
end

# File lib/split-builder.rb, line 6
def dump_experiments(schema)
  schema.experiments.each_with_object({}) do |experiment, experiments|
    metric = schema.get_metric_by_name(experiment.metric_name)

    experiments[experiment.name.to_s] = {
      :metric => metric.name,
      :goals => dump_goals(metric.goals, schema.goals),
      :alternatives => dump_alternatives(experiment.alternatives),
      :resettable => false # TODO: Pull from a default config.
    }
  end
end

# File lib/split-builder.rb, line 21
def dump_goals(metric_goals, schema_goals)
  undefined_goals = metric_goals - schema_goals

  if undefined_goals.any?
    raise UndefinedGoalError, "Goals #{undefined_goals.inspect} must be present in schema's defined goals: #{schema_goals.inspect}"
  end

  metric_goals.map(&:to_s)
end