финальная версия Finance Control

app/utils/formatters.py

@@ -0,0 +1,25 @@
+from datetime import date, datetime
+
+
+def format_money(value: float | int | None) -> str:
+    """Return money value in a readable Russian format."""
+    amount = 0 if value is None else float(value)
+    return f"{amount:,.2f} ₽".replace(",", " ")
+
+
+def current_month_key() -> str:
+    """Return current month in SQLite-friendly format YYYY-MM."""
+    return date.today().strftime("%Y-%m")
+
+
+def today_text() -> str:
+    """Return current date in ISO format for entry fields."""
+    return date.today().strftime("%Y-%m-%d")
+
+
+def validate_date(value: str) -> str:
+    """Validate user date and return normalized ISO date."""
+    try:
+        return datetime.strptime(value.strip(), "%Y-%m-%d").strftime("%Y-%m-%d")
+    except ValueError as error:
+        raise ValueError("Дата должна быть в формате ГГГГ-ММ-ДД.") from error