# frozen_string_literal: true

SEE_DOC = "see the [SaaS feature documentation](https://docs.gitlab.com/ee/development/ee_features.html#saas-only-feature)."

SUGGEST_MR_COMMENT = <<~SUGGEST_COMMENT.freeze
  ```suggestion
  group: "%<group>s"
  ```

  #{SEE_DOC.capitalize}
SUGGEST_COMMENT

def check_yaml(saas_feature)
  mr_group_label = helper.group_label

  if saas_feature.group.nil?
    message_for_missing_group!(saas_feature: saas_feature, mr_group_label: mr_group_label)
  else
    message_for_group!(saas_feature: saas_feature, mr_group_label: mr_group_label)
  end
rescue Psych::Exception
  # YAML could not be parsed, fail the build.
  fail "#{helper.html_link(saas_feature.path)} isn't valid YAML! #{SEE_DOC.capitalize}"
rescue StandardError => e
  warn "There was a problem trying to check the SaaS feature file. Exception: #{e.class.name} - #{e.message}"
end

def message_for_missing_group!(saas_feature:, mr_group_label:)
  mr_line = saas_feature.raw.lines.find_index do |line|
    line.start_with?('group:')
  end

  if mr_line
    markdown(format(SUGGEST_MR_COMMENT, group: mr_group_label), file: saas_feature.path, line: mr_line.succ)
  elsif mr_group_label
    warn %(
    Consider setting `group: "#{mr_group_label}"` in #{helper.html_link(saas_feature.path)}. #{SEE_DOC.capitalize}
    )
  else
    warn "Consider setting `group` in #{helper.html_link(saas_feature.path)}. #{SEE_DOC.capitalize}"
  end
end

def message_for_group!(saas_feature:, mr_group_label:)
  return if saas_feature.group_match_mr_label?(mr_group_label)

  if mr_group_label
    fail %(`group` is set to ~"#{saas_feature.group}" in #{helper.html_link(saas_feature.path)},
            which does not match ~"#{mr_group_label}" set on the MR!)
  end

  helper.labels_to_add << saas_feature.group
end

def added_files
  saas_feature.files(change_type: :added)
end

added_files.each do |saas_feature|
  check_yaml(saas_feature)
end