#!/usr/bin/env ruby

# frozen_string_literal: true

require 'undercover'

module Undercover
  class Changeset
    # Rugged merge_base complains when graft/shallow
    # (https://github.com/libgit2/rugged/issues/846)
    #
    # So we assume we provide the merge-base ourself. Modified from
    # https://github.com/grodowski/undercover/blob/32e62f66682ee566032b5970437ed2934ef29701/lib/undercover/changeset.rb#L74-L78
    def compare_base_obj
      return unless compare_base

      repo.lookup(compare_base.to_s)
    end
  end
end

compare_base = ARGV[0]
compare_base ||= IO.popen(%w(git merge-base origin/master HEAD)) { |p| p.read.chomp }
coverage_file_path = 'coverage/lcov/gitlab.lcov'

result = if File.exist?(coverage_file_path)
           Undercover::CLI.run(%W(-c #{compare_base}))
         else
           warn "#{coverage_file_path} doesn't exist"
           0
         end

exit result