SCREEN AND METAL BODY ON IPHONE 7 PLUS COMING APART...

I have an iPhone 7 plus which I recently, as much as I hate to admit it, I immaturely for whatever reason let fly from my hand when in anger I threw it at a door that until that point I had not realized was as solid as it apparently must be seeing how from an arms length distance and not throwing very hard at all it was able to make contact with the phone and cause the screen to come apart from the rest of the metal backing. Imagine you're relatively close to something like a soft chair or a bed even, and you're tossing your phone from a yard or 2 onto that chair or bed... Not a very hard toss but enough to make it to where you're aiming. I did this so as not to cause any/much damage to the device but you can see how well that worked out in my favor. That being said, if the screen is literally lifting off of the rest of the phone, is it still just a regular screen replacement like you would do for a cracked screen or does this level of damage require something more to repair it? It is an older phone and I was considering an upgrade but decided I don't need it, and frankly don't necessarily even want it. If it isn't more or much more than $100 or $150 then I'll keep it for a little while longer. If anybody could let me know what exactly would need to be done to fix this please let me know, I greatly appreciate it.