Okay if the brake hoses have been replaced I would completely empty and refill the lines with new fluid. You probably have a considerable amount of air in the system. I recommend you not attempt to do this as it should be done by a quality auto repair shop and more than likely involve 2 people. You indicate the pedal goes almost to the floor then becomes solid. This to me indicates the presence of entrapped air in the line. You are compressing the air sufficiently to equal the hydraulic pressure needed to actuate the brakes.