From 73904fac53fbeb615e535507d0ee3bc710210c22 Mon Sep 17 00:00:00 2001
From: Michael Rodin <rodinmi@corvinianum.de>
Date: Tue, 29 Nov 2022 10:17:44 +0100
Subject: [PATCH] added check for duplicates in tables TAGS and CATEGORY

---
 image-index | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/image-index b/image-index
index e193f20..fac9754 100755
--- a/image-index
+++ b/image-index
@@ -179,6 +179,9 @@ class database():
                 n=0
                 for i in self.get_col(typ):
                     aliases=[]
+                    if i == "." and self.name == "FILES":
+                        print("NO ENTRIES IN THE INDEX!")
+                        return "."
                     # get aliases for the checks, but only for unspecific search!
                     if self.name == "FILES":
                         if typ == "*":
@@ -278,6 +281,15 @@ class metatable(database):
         selection=self.select_index(selection,quiet)
         return selection
 
+    def update_index(self, typ, update, where, val):
+        selection=self.search_index(update,"strict")
+        if selection[0] != "." and len(selection) >= 1:
+            print("One entry is already called {}!".format(update))
+            return False
+        else:
+            super().update_index(typ, update, where, val)
+            return True
+
 class filestable(database):
     def __init__(self,filepath = CONFIG_DIR + "/index.db"):
         self.name="FILES"
@@ -470,7 +482,7 @@ class filestable(database):
         
         return self.select_index(selection,quiet)
 
-def get_randhex(self,count=5):
+def get_randhex(count=5):
     randhex=""
     for i in range(count):
         randhex+=random.choice("0123456789abcdef")
@@ -668,16 +680,16 @@ def meta_update(typ,args):
         sel_list=ctb.search_index(search)
         for item in sel_list:
             alias=ctb.get_alias(item[0])
-            ctb.update_index("ALIAS", update, "NAME", item[0])
+            success=ctb.update_index("ALIAS", update, "NAME", item[0])
     elif re.match('[tT].*',typ):
         sel_list=ttb.search_index(search)
         for item in sel_list:
             alias=ttb.get_alias(item[0])
-            ttb.update_index("ALIAS", update, "NAME", item[0])
+            success=ttb.update_index("ALIAS", update, "NAME", item[0])
     else:
         print("The first argument needs to be either 'Category' or 'Tags'!")
         return 1
-    if item[0] != ".":
+    if item[0] != "." and success:
         print("Updated {} to {}".format(alias,update))
 
 def meta_help():