app/services/ci/image_for_build_service.rb


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module Ci
  class ImageForBuildService
    def execute(project, params)
      image_name =
        if params[:sha]
          commit = project.commits.find_by(sha: params[:sha])
          image_for_commit(commit)
        elsif params[:ref]
          commit = project.last_commit_for_ref(params[:ref])
          image_for_commit(commit)
        else
          'build-unknown.svg'
        end

      image_path = Rails.root.join('public/ci', image_name)

      OpenStruct.new(
        path: image_path,
        name: image_name
      )
    end

    private

    def image_for_commit(commit)
      return 'build-unknown.svg' unless commit

      'build-' + commit.status + ".svg"
    end
  end
end