add building blocks for 3rd party launcher support

installer.py

@@ -1,7 +1,7 @@
 # -----------------------read me?---------------------------
 
 
-# compiling this is super easy, just run `pip install wget` and `pip install pyinstaller` and then
+# compiling this is super easy, just run `pip install wget pyinstaller certifi` and then
 # compile with `python -m PyInstaller --onefile installer.py --icon image.ico`
 
 # (wget is a dependency for this python script that doesnt come with python by default)
@@ -9,9 +9,6 @@
 
 # also, peep the organized code blocks!! am i cool or what?
 
-# something worthy of note: this code desperately needs to be refactored. right now literally
-# everything important happens under a big if elif statement and its pretty fucking stupid
-
 
 # -----------------import dependencies----------------------
 
@@ -110,11 +107,21 @@ def print_ascii_art():
     print("                                           ....")
     print()
 
-def checkfor_and_delete_file(filepath):
+def check_if_exists_and_delete_file(filepath):
     #deletes old downloaded mod archives
     if os.path.exists(filepath):
         print("Found previously downloaded archive, deleting...")
         os.remove(filepath)
+    else:
+        pass
+
+def check_for_launcher_files(filepath, launchername):
+    #checks for evidence of 3rd party launchers and sets a variable flag if a launcher is installed
+    if os.path.exists(filepath):
+        print("Alternative Minecraft launcher detected: " + str(launchername))
+        detectedlauncher = str(launchername)
+    else:
+        pass
 
 
 # --------------------the real shit!------------------------
@@ -131,6 +138,9 @@ global modfolder
 if platform.system() == "Linux":
     print("Operating system detected: Linux")
 
+    check_for_launcher_files(str(Path.cwd()) + "/.var/app/org.prismlauncher.Prism.Launcher", "PrismLauncherFlatpak")
+    check_for_launcher_files(str(Path.cwd()) + "/.local/share/PrismLauncher/prismlauncher.cfg", "PrismLauncherPackage")
+
     os.chdir(".minecraft")
     mcfolder = str(Path.cwd())
     modfolder = mcfolder + '/mods'