feat: add empty_weigh and full_weight fields for auto and mechanic rvalution models

core/apps/documents/services/cbu_rates.py

@@ -1,33 +0,0 @@
-from datetime import date
-
-import requests
-
-CBU_URL = "https://cbu.uz/oz/arkhiv-kursov-valyut/json/{code}/{date}/"
-TIMEOUT_SECONDS = 5
-CURRENCY_CODES = ("USD", "EUR", "RUB")
-
-
-def fetch_rates(target_date):
-    """CBU.uz dan berilgan sanaga oid USD, EUR, RUB kurslarini olish.
-
-    Tarmoq xatosi yoki notogri javob bolsa bosh dict qaytadi.
-    """
-    if target_date is None:
-        target_date = date.today()
-    date_str = target_date.strftime("%Y-%m-%d")
-    rates = {}
-    for code in CURRENCY_CODES:
-        try:
-            resp = requests.get(
-                CBU_URL.format(code=code, date=date_str),
-                timeout=TIMEOUT_SECONDS,
-            )
-            resp.raise_for_status()
-            data = resp.json()
-            if isinstance(data, list) and data:
-                rate_value = data[0].get("Rate")
-                if rate_value:
-                    rates[code] = rate_value
-        except (requests.RequestException, ValueError):
-            continue
-    return rates