0.0.1 init, main page prepare

BaseModels/currency_exchange/funcs.py

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+import requests
+import json
+from datetime import datetime, timedelta
+from BaseModels.mailSender import techSendMail
+from GeneralApp.temp_data_funcs import *
+
+
+def get_rate_nb_by_currency_code(code, date=None):
+    from .nbrb.nbrb_currency_exchange import get_nbrb_rate_by_currency_code
+    from .alfabank_api.alfabank_api_funcs import get_alfabank_nb_rate_by_currency_code
+
+    if code == 'BYN':
+        return 1
+
+    rate = None
+    request_required = True
+
+    try:
+
+        tmp_rec = get_tmp_data('currency_rate', code)
+        if tmp_rec and tmp_rec.json_data:
+            if 'rate' in tmp_rec.json_data:
+                # если с момента последнего импорта прошло меньше 30 минут - забираем курс из базы
+                if datetime.strptime(tmp_rec.json_data['DT'], '%d.%m.%Y %H:%M') + timedelta(
+                        minutes=30) > datetime.now():
+                    rate = tmp_rec.json_data['rate']
+
+        if not rate:
+            # если с последней попытки меньше минуты - отдаем старый курс или None
+            if tmp_rec.modifiedDT + timedelta(minutes=5) > datetime.now():
+                if 'rate' in tmp_rec.json_data:
+                    rate = tmp_rec.json_data['rate']
+                else:
+                    request_required = False
+
+        if request_required:
+            if not rate:
+                rate = get_alfabank_nb_rate_by_currency_code(code)
+
+            # if not rate:
+            #     rate = get_nbrb_rate_by_currency_code(code)
+
+        tmp_rec.modifiedDT = datetime.now()
+        tmp_rec.save()
+
+    except Exception as e:
+        msg = f'<b style="color : red;">!!!!! --- get_rate_nb_by_currency_code error={str(e)}</b>'
+        print(msg)
+        techSendMail(msg, 'tE get_rate_nb_by_currency_code error')
+
+    return rate