Added a chek_minecraft_installation and backup_mods functions.

main.py

@@ -1,23 +1,55 @@
 import os
+import shutil
+import requests
 
+from pathlib import Path
+
+# Minecraft installation folder.
 minecraft_dir = os.path.join(os.getenv('APPDATA'), ".minecraft")
 
+# Forge variables.
 default_forge_version = "1.12.2-forge-14.23.5.2859"
 forge_version = input(f"Enter Forge version (default: {default_forge_version}), leave empty to choose default: ") or default_forge_version
 forge_dir = os.path.join(minecraft_dir, f"versions/{forge_version}")
 forge_url = f"https://git.jisoonet.com/publicprojects/{forge_version}/-/archive/main/{forge_version}-main.zip"
 
+# Forge libraries variables.
 forge_libraries_version = forge_version.replace("forge-", "")
 forge_libraries_dir = os.path.join(minecraft_dir, f"libraries/net/minecraftforge/forge/{forge_libraries_version}")
 forge_libraries_url = f"https://git.jisoonet.com/publicprojects/{forge_libraries_version}/-/archive/main/{forge_libraries_version}-main.zip"
 
+# Backup folder for mods.
 mods_backup_dir = os.path.join(minecraft_dir, "mods_backup")
 
+# Modpack variables.
 default_modpack_name = "apocaz-modpack"
 modpack_name = input(f"Enter Modpack name (default: {default_modpack_name}), leave empty to choose default: ") or default_modpack_name
 modpack_dir = os.path.join(minecraft_dir, "mods")
 modpack_url = f"https://git.jisoonet.com/publicprojects/{modpack_name}/-/archive/main/{modpack_name}-main.zip"
 
+# Function to check for the prescence of Minecraft installation folder.
+def check_minecraft_installation(minecraft_dir):
+    print("Checking for existing Minecraft installation...")
+    if not Path(minecraft_dir).exists():
+        print("Error: Minecraft not found. Please install Minecraft first.")
+    else:
+        print("Minecraft is already installed.")
+
+
+
+
+
+# Backups the mods from the mods folder to the backup folder.
+def backup_mods(modpack_dir, mods_backup_dir):
+    print("Backing up existing mods...")
+    if Path(modpack_dir).exists():
+        if not Path(mods_backup_dir).exists():
+            os.makedirs(mods_backup_dir)
+        for item in os.listdir(modpack_dir):
+            shutil.move(os.path.join(modpack_dir, item), mods_backup_dir)
+        print(f"Existing mods backed up to {mods_backup_dir}")
+    else:
+        print("No mods directory found. No backup required.")
 
 # Entry point of the script.
 def main():