ESP8266 as Wi-Fi Shield

I am a newbie in Arduino and i have a project to work on which have a close deadline including Arduino Mega , ESP2866 12-E and Firebase as a server to store data what i don`t get here is:

Is there anyway to connect my Arduino data with Firebase without using HTML or PHP ?

as i found some library that deals directly with Firbase but it depends on being ESP8266 12-E programed directly through Arduino IDE.

I have searched alot but there isn`t anything talking about Arduino being in contact with Firebase

Please don't cross-post: