Show last update in title bar (#520)

library.py

@@ -631,3 +631,11 @@ def migrate_mappings(self):
                 self.logger.debug("Droped mappings table from parts database.")
             except sqlite3.OperationalError:
                 return
+
+    def get_last_update(self) -> str:
+        """Get last update from meta table."""
+        with contextlib.closing(sqlite3.connect(self.partsdb_file)) as con, con as cur:
+            last_update = cur.execute("SELECT last_update FROM meta").fetchone()
+            if last_update:
+                return last_update[0]
+            return ""

mainwindow.py

@@ -1,5 +1,6 @@
 """Contains the main window of the plugin."""
 
+from datetime import datetime as dt
 import json
 import logging
 import os
@@ -496,6 +497,10 @@ def quit_dialog(self, *_):
     def init_library(self):
         """Initialize the parts library."""
         self.library = Library(self)
+        last_update = self.library.get_last_update()
+        if last_update:
+            last_update = dt.fromisoformat(last_update).strftime("%Y-%m-%d %H:%M")
+        self.SetTitle(f"JLCPCB Tools [ {getVersion()} ] | Last database update: {last_update}",)
 
     def init_store(self):
         """Initialize the store of part assignments."""