#!/usr/bin/env ruby
# frozen_string_literal: true

require_relative '../../lib/gitlab/popen'
require_relative '../lib/tooling/test_file_finder'

require 'gitlab'

gitlab_token = ENV.fetch('DANGER_GITLAB_API_TOKEN', '')

Gitlab.configure do |config|
  config.endpoint       = 'https://gitlab.com/api/v4'
  config.private_token  = gitlab_token
end

output_file = ARGV.shift

mr_project_path = ENV.fetch('CI_MERGE_REQUEST_PROJECT_PATH')
mr_iid = ENV.fetch('CI_MERGE_REQUEST_IID')

mr_changes = Gitlab.merge_request_changes(mr_project_path, mr_iid)
changed_files = mr_changes.changes.map { |change| change['new_path'] }

tests_to_run = changed_files.flat_map do |file|
  test_files = Tooling::TestFileFinder.new(file, foss_test_only: true).test_files
  test_files.select { |f| File.exist?(f) }
end

File.write(output_file, tests_to_run.uniq.join(' '))