new

diff.py

@@ -1,22 +1,37 @@
+# diff.py
 import csv
+import logging
+from typing import Dict, List
 
-def read_csv_to_dict(filename):
-    d = {}
-    with open(filename, newline='', encoding='utf-8') as f:
-        reader = csv.DictReader(f)
-        for row in reader:
-            d[row["Artist Name"]] = row
-    return d
+logger = logging.getLogger(__name__)
 
-def detect_changes(old_data, new_data):
+
+def read_csv_to_dict(filename: str) -> Dict[str, Dict[str, str]]:
+    data = {}
+    try:
+        with open(filename, newline="", encoding="utf-8") as f:
+            reader = csv.DictReader(f)
+            for row in reader:
+                if "Artist Name" in row and row["Artist Name"]:
+                    data[row["Artist Name"]] = row
+    except FileNotFoundError:
+        logger.warning(f"CSV file not found: {filename}")
+    except Exception as e:
+        logger.error(f"Error reading CSV file {filename}: {e}", exc_info=True)
+    return data
+
+
+def detect_changes(
+    old_data: Dict[str, Dict[str, str]], new_data: Dict[str, Dict[str, str]]
+) -> List[str]:
     changes = []
 
     old_keys = set(old_data.keys())
     new_keys = set(new_data.keys())
 
-    removed = old_keys - new_keys
-    added = new_keys - old_keys
-    common = old_keys & new_keys
+    removed = sorted(list(old_keys - new_keys))
+    added = sorted(list(new_keys - old_keys))
+    common = sorted(list(old_keys & new_keys))
 
     for artist in removed:
         changes.append(f"❌ Removed: **{artist}**")
@@ -28,15 +43,15 @@ def detect_changes(old_data, new_data):
         old_row = old_data[artist]
         new_row = new_data[artist]
 
-        if old_row["URL"] != new_row["URL"]:
+        if old_row.get("URL") != new_row.get("URL"):
             changes.append(f"🔗 Link changed for **{artist}**")
-        if old_row["Credit"] != new_row["Credit"]:
+        if old_row.get("Credit") != new_row.get("Credit"):
             changes.append(f"✏️ Credit changed for **{artist}**")
-        if old_row["Links Work"] != new_row["Links Work"]:
+        if old_row.get("Links Work") != new_row.get("Links Work"):
             changes.append(f"🔄 Links Work status changed for **{artist}**")
-        if old_row["Updated"] != new_row["Updated"]:
+        if old_row.get("Updated") != new_row.get("Updated"):
             changes.append(f"🕒 Updated date changed for **{artist}**")
-        if old_row["Best"] != new_row["Best"]:
+        if old_row.get("Best") != new_row.get("Best"):
             changes.append(f"⭐ Best flag changed for **{artist}**")
 
-    return changes
+    return changes