feat: balance and reward

queries/balance/api/__init__.py

@@ -0,0 +1,4 @@
+from .requests import (
+    get_balance_transactions,
+    get_balance_info
+)

queries/balance/api/requests.py

@@ -0,0 +1,29 @@
+import database
+from ..schemas.requests import *
+from ..schemas.responses import *
+from ..schemas.entities import *
+
+
+def get_balance_transactions(data: dict):
+    items_per_page = 5
+    request = GetBalanceTransactionsRequest.model_validate(data)
+    page = max([request.page - 1, 0])
+    query = (database.BalanceTransaction.query
+             .filter(database.BalanceTransaction.user_id == request.user_id)
+             .order_by(database.BalanceTransaction.created_at.desc())
+             .offset(items_per_page * page)
+             .limit(items_per_page)
+             .all())
+    balance_transactions = [BalanceTransaction.model_validate(balance_transaction) for balance_transaction in query]
+    response = GetBalanceTransactionsResponse(balance_transactions=balance_transactions)
+    return response.to_dict()
+
+
+def get_balance_info(data: dict):
+    request = GetBalanceInfoRequest.model_validate(data)
+    balance = (database.User.query
+               .filter_by(id=request.user_id)
+               .with_entities(database.User.balance)
+               .scalar())
+    response = GetBalanceInfoResponse(balance=balance)
+    return response.to_dict()