I think this is pretty accurate. I did it by ear, so if it is wrong please comment.
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C (x32010@1)                          DIt (xx0232@1)feels like we been living in fast-foward
F (133211@1)                  GAnother (320003@1)moment passing by
C (x32010@1)                         DThe (xx0232@1)party's ending but it's now or never
F (133211@1)               GNobody's (320003@1)going home tonight

C (x32010@1)              
Katy Perry's on replay,
DShe's (xx0232@1)on replay
FDJ (133211@1)got the floor to shake
GThe (320003@1)floor to shake
CPeople (x32010@1)going all the way
DYeah, (xx0232@1)all the way
F (133211@1)               G(One (320003@1)Strum)            
I'm still wide awake

CI (x32010@1)wanna stay up all night
    G (320003@1)         F (133211@1)             GAnd (320003@1)jump around until we see the sun
             CI (x32010@1)wanna stay up all night
    G (320003@1)             F (133211@1)               GAnd (320003@1)find a girl and tell her she's the one
               CHold (x32010@1)on to the feeling
                 GAnd (320003@1)don't let it go
                 FCause (133211@1)we got the flow now
           GGet (320003@1)out of control
             CI (x32010@1)wanna stay up all night
    G (320003@1)            F (133211@1)    GAnd (320003@1)do it all with you

CUp (x32010@1)all night
           GLike (320003@1)this, all night, hey
       FUp (133211@1)all night
           GLike (320003@1)this, all night, hey
       CUp (x32010@1)all night

Repeat Verse One chords for Verse 2
Repeat Chorus chords for Chorus
Repeat Chorus chords for Bridge.