The haste spell limits what you can do with its Attack action: one weapon attack. Extra Attack doesn't work with it.

Does haste work with extra attack?

Haste gives an extra action that can be used to take an attack action that is limited to 1 attack. So yes, 4 attacks.

Does haste give extra bonus action?

From the entry on bonus actions in the PHB: anything that deprives you of your ability to take actions also prevents you from taking a bonus action. So, yeah. Haste ending means you can't take an action or bonus action.