Added detection of directory duplication (close #366)

CB/Core.py

@@ -167,6 +167,22 @@ def check_if_dev(self, url):
         else:
             return 0
 
+    def check_if_overlap(self):
+        directories = []
+        found = set()
+        for addon in self.config['Addons']:
+            directories = directories + addon['Directories']
+        dupes = [x for x in directories if x in found or found.add(x)]
+        if len(dupes) > 0:
+            addons = []
+            for addon in self.config['Addons']:
+                if set(addon['Directories']).intersection(dupes):
+                    addons.append(addon['Name'])
+            addons.sort()
+            return '\n'.join(addons)
+        else:
+            return False
+
     def check_if_blocked(self, addon):
         if addon:
             if 'Block' in addon.keys():

CurseBreaker.py

@@ -599,6 +599,9 @@ def c_update(self, args, addline=False, update=True, force=False, reverseprovide
             self.console.print(self.table)
             if compacted > 0:
                 self.console.print(f'Additionally [green]{compacted}[/green] addons are up-to-date.')
+            overlap = self.core.check_if_overlap()
+            if overlap:
+                self.console.print(f'\n[bold red]Detected addon directory overlap. This will cause issues. Affected addons:[/bold red]\n{overlap}')
         else:
             self.console.print('Apparently there are no addons installed by CurseBreaker (or you provided incorrect add'
                                'on name).\nCommand [green]import[/green] might be used to detect already installed addo'