Teenagers (VENT)

So my 16 soon to be 17 year old and I are at it again. I'm at a loss. We want our kids to be happy, feel safe and secure. Mine does and it came back and bit me in the ass. He has the "what are you going to do about it" attitude. So I've had to go against my own beliefs and promises I made to myself when he was born. I swore He would never be hit, he would get his gr 12 and I wouldn't kick him out. I've asked him to move out . He only needs four more classes to get his gr 12. If he would put a little effort into it he would graduate in January. He hates school, hates homework , hates chores and going to work. All normal for a teenager. Too bad its life and has to be done. Only How do you make them do it. I told him he had to sit at the table and do his homework. He sat there for 6 hrs and did nothing but bitch. I Love him so much and he abuses it. He is sullen and moody and disrespectful. I could handle the battles of raising a teenager if he was just kind and helpful once in awhile. He says what he has too, to get what he wants from me and then treats me like crap as soon as he gets it. I don't understand what happened. Hes completely different from 18 months ago. At this point all the tension and fighting isn't fair to anyone exspecially his little brother.. I've lost my son and have know idea how to get him back.