# rubocop:disable Style/SignalException
# frozen_string_literal: true

has_only_docs_changes = helper.all_changed_files.all? { |file| file.start_with?('doc/', '.gitlab/ci/docs.gitlab-ci.yml', '.mdlrc') }
is_docs_only_branch = gitlab.branch_for_head =~ /(^docs[\/-].*|.*-docs$)/

if is_docs_only_branch && !has_only_docs_changes
  fail "It seems like your branch name has a `docs` prefix or suffix. "\
    "The CI won't run the full pipeline, but you also have changed non-docs files. "\
    "Please recreate this MR with a new branch name."
end

if has_only_docs_changes && !is_docs_only_branch
  markdown(<<~MARKDOWN)

  ## Documentation only changes

  Hey! Seems your merge request contains only docs changes.
  Tired of waiting 2 hours for the pipeline to finish?
  Next time, prepend `docs-` to [your branch name](https://docs.gitlab.com/ee/development/documentation/#branch-naming)
  and the pipeline will finish before you say GitLab (x300)!

  MARKDOWN
end