Filevault and not working keboard on macbook air after water spill

A glass of water accidentally spilled onto my macbook air‘s keyboard. I turned it upside down right away and let it shut off for two days now. Feeling tempted after two days, I turn it on but somehow all keys on keyboard doesn’t work at all. There is a command suddenly appearing to recover my password using different keyboard because the built—in keyboard is not enabled on filevault mode to reboot the system. My question is, Did I have just ruin my keyboard and it wouldn’t longer work? I am worried because all stores are closed in holiday and I have lots of assignments to finish in uni. Thanks in advance.