Improvements upon api and database api

dba.py

@@ -450,11 +450,16 @@ def create_asset(conn: DBConnector, name: str, description: str, fid: str):
         return False, None
 
 
-def update_asset(conn: DBConnector, asset_id: int, asset_description: str):
+def update_asset(
+    conn: DBConnector, asset_id: int, asset_description: str, asset_tags: list[str]
+):
     try:
         conn.updateDataInTable(
             ASSETS_TABLE_NAME,
-            [ColumnUpdate("description", asset_description)],
+            [
+                ColumnUpdate("description", asset_description),
+                ColumnUpdate("tags", ",".join(asset_tags)),
+            ],
             [ColumnCondition("id", "eq", asset_id)],
         )
         return True, None
@@ -527,3 +532,28 @@ def get_asset_by_id(conn: DBConnector, asset_id: int):
     except Exception as e:
         logger.exception(e)
         return None
+
+
+def get_assets(conn: DBConnector) -> list[Asset]:
+    try:
+        assets = conn.selectFromTable(ASSETS_TABLE_NAME, ["*"])
+        if not assets:
+            return []
+        return [Asset.parse_obj(asset) for asset in assets]
+    except Exception as e:
+        logger.exception(e)
+        return []
+
+
+def get_assets_tags(conn: DBConnector) -> list[str]:
+    try:
+        with conn.connection as connection:
+            with connection.cursor() as cursor:
+                tags = cursor.execute(
+                    f"SELECT DISTINCT unnest(string_to_array(tags, ',')) FROM {ASSETS_TABLE_NAME}"
+                ).fetchall()
+
+        return [tag["unnest"] for tag in tags]
+    except Exception as e:
+        logger.exception(e)
+        return []