My phone was super hot while charging, and it wont turn on.

At 4am, I woke up and found that my phone battery is 7%, I charged it and leave it. after an hour I checked my phone and was shocked that it is so hot so I immediately took it out from charging to avoid explosion. Then when I tried to turn it on, it wont open. I leave it for a while and let it cool down, still it wont turn on. I tried to charge it again but it's not working anymore. please please please help me. will I still be able to recover my files?

I have this phone for more than a year.