Does anyone know whether the song, The Parting Glass, was originally in Irish, or if it is ever performed in Irish?

I'm looking for a translation into Irish of the following lines:

If I had money enough to spend and leisure time to sit awhile There is a fair maid in this town, that sorely has my heart beguiled Her rosy cheeks and ruby lips, I own she has my heart in thrall Then fill to me the parting glass, goodnight and joy be with you all

I don't speak Irish (I'm Canadian), but my girlfriend is Irish, and it's for a dedication to her. Call me a romantic! Any help appreciated.