[NEED HELP] Tricky keyboard option

Hi! Is there a possibility to make somehow through console or config files the following:

1) press W button to use Blaster - > If Blaster is already used, pressing of W button changes it to previously used weapon

2) if i have Crylink then pressing of R button switches weapon to Crylink -> if NO then it switches to shotgun -> If Crylink is already used pressing R will switch it to shotgun.

Thx

Yes. Hint: there's a cl_hook for weapon switch (gets the name as param).