Battery light and security light

I don't know if it might question went out but I have a 2001
Chevy Tahoe my battery light and my security light are on
and I can't get the truck to start and the headlights are dead
they don't work and the interior lights won't work and can't
think of anything else but the running lights work on it and
the instrumental light works anybody know what's wrong
with my truck and I think the windows ain't working either
does anybody know what's wrong with it I tried to bypass
code four or five times and I can't get that that didn't work
try to get to learn the key and it didn't work I switched the
ignitions that didn't work anybody know what's wrong with
it in the battery drains to