Brake Fluid Leak problems of the 1997 Toyota Corolla

Driving on sh 79 freehold boro when attempting to apply brakes to stop and make turn pedal went all the way to the floor without any warning and failed to stop vehicle. Pumped brake pedal in panic many times when vehivcle pulled sharp right and while still pumping brake pedal and attempt to use hand brake vehicle finally slowed and stopped. Mechanic advised both brake lines in rear were not coated and fluid leaked from place where clamp strapped them to undercarriage of car. Lines were rusted as no protection coating was applied during manufacturing. They have replaced many Corolla brake lines due to this lack of coating. No warning prior to brakes failing. No traffic close while braking just totally scared to death.