module RuboCop::Cop::MinBranchesCount

def if_conditional_branches(node, branches = [])
  return [] if node.nil? || !node.if_type?
  branches << node.if_branch
  else_branch = node.else_branch
  if_conditional_branches(else_branch, branches) if else_branch&.if_type?
  branches
end

def min_branches_count
  length = cop_config['MinBranchesCount'] || 3
  return length if length.is_a?(Integer) && length.positive?
  raise 'MinBranchesCount needs to be a positive integer!'
end

def min_branches_count?(node)
  branches =
    if node.case_type?
      node.when_branches
    elsif node.if_type?
      if_conditional_branches(node)
    else
      raise ArgumentError, "Unsupported #{node.type.inspect} node type"
    end
  branches.size >= min_branches_count
end