How can I fix the broken front legs of my upholstered dining room chairs?

I have dining chairs that are fully upholstered and the front legs have come off the front of the seat. How can I repair these chairs it has happened to all but one. the two front legs are one section that is joined to the chair seat with biscuits which have broken and a wooden brace which has also become compromised. I love these chairs and the fabric is in excellent shape. I hate to just throw these chairs away. thanks