Update app.py

app.py

@@ -75,26 +75,39 @@ master_df: pd.DataFrame | None = None
 pattern_config: dict | None = None
 
 
-# ====================================================
-# PATTERN CONFIG LOAD / SAVE (JSON)
-# ====================================================
-
-DEFAULT_PATTERN_CONFIG = {
-    "global": [],   # start empty; managed via Admin tab
-    "states": {}    # e.g. "KARNATAKA": [{pattern: "...", replacement: "..."}]
-}
-
-
-def load_pattern_config() -> dict:
-    """Load patterns from JSON file, or create empty file."""
+def load_pattern_config(debug=True) -> dict:
+    """
+    Load patterns.json from PATTERN_FILE.
+    If missing, create empty structure.
+    If debug=True, also return verbose info via prints.
+    """
     if os.path.exists(PATTERN_FILE):
-        with open(PATTERN_FILE, "r", encoding="utf-8") as f:
-            return json.load(f)
+        try:
+            with open(PATTERN_FILE, "r", encoding="utf-8") as f:
+                cfg = json.load(f)
+            if debug:
+                print("DEBUG: Successfully loaded patterns.json")
+                print("DEBUG: top-level keys:", list(cfg.keys()))
+                # show counts safely
+                gcount = len(cfg.get("global", []))
+                skeys = list(cfg.get("states", {}).keys())
+                print(f"DEBUG: global patterns={gcount}, state keys={skeys}")
+            return cfg
+        except Exception as e:
+            print("ERROR: Failed to parse patterns.json:", e)
+            # fallback to empty skeleton
+            return {"global": [], "states": {}}
+    else:
+        # Not present — create it with empty structure and log
+        skeleton = {"global": [], "states": {}}
+        try:
+            with open(PATTERN_FILE, "w", encoding="utf-8") as f:
+                json.dump(skeleton, f, indent=2, ensure_ascii=False)
+            print("DEBUG: patterns.json not found — created empty patterns.json at", PATTERN_FILE)
+        except Exception as e:
+            print("ERROR: Could not create patterns.json:", e)
+        return skeleton
 
-    # If file not present, seed with empty structure
-    with open(PATTERN_FILE, "w", encoding="utf-8") as f:
-        json.dump(DEFAULT_PATTERN_CONFIG, f, indent=2, ensure_ascii=False)
-    return DEFAULT_PATTERN_CONFIG.copy()
 
 
 def save_pattern_config(config: dict) -> None: