demarches-normaliennes/app/models/condition_form.rb
2024-08-22 09:26:48 +02:00

75 lines
1.6 KiB
Ruby

# frozen_string_literal: true
class ConditionForm
include ActiveModel::Model
include Logic
attr_accessor :top_operator_name, :rows, :source_tdcs
def to_condition
case sub_conditions.count
when 0
nil
when 1
sub_conditions.first
else
top_operator_class.new(sub_conditions)
end
end
def delete_row(i)
rows.slice!(i)
self
end
def change_champ(i)
sub_conditions[i] = Logic.ensure_compatibility_from_left(sub_conditions[i], source_tdcs)
self
end
private
def top_operator_class
Logic.class_from_name(top_operator_name)
end
def sub_conditions
@sub_conditions ||= rows.map { |row| row_to_condition(row) }
end
def row_to_condition(row)
left = Logic.from_json(row[:targeted_champ])
right = parse_value(left.type(source_tdcs), row[:value])
Logic.class_from_name(row[:operator_name]).new(left, right)
end
def parse_value(left_type, value)
return empty if value.blank?
if left_type == :number
# in this special case, we try to cast as Float, then Integer
# but it can still be a previous string value or a mistap
number = parse_to_number(value)
return constant(number) if number
end
# otherwise it can be a serialized Constant(true | false) term
# or a serialized Empty term
term = Logic.from_json(value) rescue nil
return term if term.present?
# if anything else, save it as a constant of string
constant(value)
end
def parse_to_number(str)
float = Float(str)
float % 1 == 0 ? float.to_i : float
rescue ArgumentError
nil
end
end