migrate to table based tinydb

NOTE to migrate database install tinydb & run migrate.py

- added new functions to filter data with db queries
- in the storage module

webapp/data/migrate.py

@@ -0,0 +1,59 @@
+import os, json
+from tinydb import TinyDB
+from tinydb.storages import Storage
+
+# Paths
+OLD_FILE = "orders.json"
+ARCHIVE_FILE = "orders_old.json"
+NEW_FILE = "orders_new.json"  # final TinyDB JSON file
+TABLE_NAME = "orders"
+
+
+class PrettyJSONStorage(Storage):
+    """Custom TinyDB storage that pretty-prints JSON."""
+    def __init__(self, path):
+        self.path = path
+
+    def read(self):
+        try:
+            with open(self.path, "r", encoding="utf-8") as f:
+                return json.load(f)
+        except FileNotFoundError:
+            return None
+
+    def write(self, data):
+        with open(self.path, "w", encoding="utf-8") as f:
+            json.dump(data, f, ensure_ascii=False, indent=2)
+
+
+def migrate():
+    if not os.path.isfile(OLD_FILE):
+        print("No old JSON file found. Nothing to migrate.")
+        return
+
+    # Load old orders
+    with open(OLD_FILE, "r", encoding="utf-8") as f:
+        orders = json.load(f) or []
+
+    if not orders:
+        print("No orders found in the old JSON.")
+        return
+    
+    print(orders)
+
+    # Open TinyDB and insert into table
+    db = TinyDB(NEW_FILE, storage=PrettyJSONStorage)
+    orders_table = db.table(TABLE_NAME)
+    for order in orders:
+        orders_table.insert(order)
+
+    # Rename old file to archive
+    os.rename(OLD_FILE, ARCHIVE_FILE)
+    os.rename(NEW_FILE, OLD_FILE)
+    print(f"Migrated {len(orders)} orders into table '{TABLE_NAME}'.")
+    print(f"Old JSON file renamed to '{ARCHIVE_FILE}'.")
+    print(f"New TinyDB JSON file is '{OLD_FILE}'.")
+
+
+if __name__ == "__main__":
+    migrate()