class Gitlab::QA::Docker::Engine

def attach(name, &block)
  Docker::Command.execute("attach --sig-proxy=false #{name}", &block)
end

def exec(name, command)
  Docker::Command.execute("exec #{name} bash -c '#{command}'")
end

def hostname
  URI(DOCKER_HOST).host
end

def network_create(name)
  Docker::Command.execute("network create #{name}")
end

def network_exists?(name)
  Docker::Command.execute("network inspect #{name}")
rescue Docker::Shellout::StatusError
  false
else
  true
end

def port(name, port)
  Docker::Command.execute("port #{name} #{port}/tcp")
end

def pull(image, tag)
  Docker::Command.execute("pull #{image}:#{tag}")
end

def read_file(image, tag, path, &block)
  cat_file = "run --rm --entrypoint /bin/cat #{image}:#{tag} #{path}"
  Docker::Command.execute(cat_file, &block)
end

def remove(name)
  Docker::Command.execute("rm -f #{name}")
end

def restart(name)
  Docker::Command.execute("restart #{name}")
end

def run(image, tag, *args)
  Docker::Command.new('run').tap do |command|
    yield command if block_given?
    command << "#{image}:#{tag}"
    command << args if args.any?
    command.execute!
  end
end

def stop(name)
  Docker::Command.execute("stop #{name}")
end