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path: root/lib/gitlab/jira_import/metadata_collector.rb
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# frozen_string_literal: true

module Gitlab
  module JiraImport
    class MetadataCollector
      attr_accessor :jira_issue, :metadata

      def initialize(jira_issue)
        @jira_issue = jira_issue
        @metadata = []
      end

      def execute
        add_field(%w(issuetype name), 'Issue type')
        add_field(%w(priority name), 'Priority')
        add_field('environment', 'Environment')
        add_field('duedate', 'Due date')
        add_parent
        add_versions

        return if metadata.empty?

        metadata.join("\n").prepend("\n\n---\n\n**Issue metadata**\n\n")
      end

      private

      def add_field(keys, field_label)
        value = fields.dig(*keys)
        return if value.blank?

        metadata << "- #{field_label}: #{value}"
      end

      def add_parent
        parent_issue_key = fields.dig('parent', 'key')

        return if parent_issue_key.blank?

        parent_summary_key = fields.dig('parent', 'fields', 'summary')

        metadata << "- Parent issue: [#{parent_issue_key}] #{parent_summary_key}".strip
      end

      def add_versions
        return if fields['fixVersions'].blank? || !fields['fixVersions'].is_a?(Array)

        versions = fields['fixVersions'].map { |version| version['name'] }.compact.join(', ')
        metadata << "- Fix versions: #{versions}"
      end

      def fields
        jira_issue.fields
      end
    end
  end
end