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

require 'gitlab'
require 'test_file_finder'

gitlab_token = ENV.fetch('DANGER_GITLAB_API_TOKEN', '')
gitlab_endpoint = ENV.fetch('CI_API_V4_URL')

Gitlab.configure do |config|
  config.endpoint       = gitlab_endpoint
  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'] }

tff = TestFileFinder::FileFinder.new(paths: changed_files).tap do |file_finder|
  file_finder.use TestFileFinder::MappingStrategies::PatternMatching.load('tests.yml')

  if ENV['RSPEC_TESTS_MAPPING_ENABLED']
    file_finder.use TestFileFinder::MappingStrategies::DirectMatching.load_json(ENV['RSPEC_TESTS_MAPPING_PATH'])
  end
end

File.write(output_file, tff.test_files.uniq.join(' '))