fix: Fixed a bug, at midnight, when there is no currency rate, it did not give anything, now the date will be in the same timezone as kekkai

functions/convert.py

@@ -4,12 +4,13 @@ from datetime import datetime
 from decimal import Decimal
 from http import HTTPStatus
 
+import pytz
 import aiohttp
 import yaml
 
 from utils.format_number import format_number
 
-config = yaml.safe_load(open('config.yaml'))
+config = yaml.safe_load(open('config.yaml', 'r', encoding='utf-8'))
 
 class Converter:
     def __init__(self):
@@ -24,9 +25,23 @@ class Converter:
 
         self.conv_amount = format_number(Decimal(self.conv_amount))
 
+    async def get_timezone(self) -> str:
+        async with aiohttp.ClientSession(
+            timeout=aiohttp.ClientTimeout(total=3)
+            ) as session:
+            async with session.get(
+                f'{config['kekkai_instance']}/api/metadata'
+                ) as res:
+
+                if not HTTPStatus(res.status).is_success:
+                    return 'UTC'
+
+                data = await res.json()
+                return data.get('timezone', 'UTC')
 
     async def kekkai(self) -> bool:
-        date = datetime.today().strftime('%Y-%m-%d')
+        timezone = pytz.timezone(await self.get_timezone())
+        date = datetime.now(timezone).strftime('%Y-%m-%d')
 
         async with aiohttp.ClientSession(timeout=aiohttp.ClientTimeout(total=3)) as session:
             async with session.get(f'{config['kekkai_instance']}/api/getRate/', params={
@@ -45,7 +60,9 @@ class Converter:
 
 
     async def ddg(self) -> None:
-        async with aiohttp.ClientSession(timeout=aiohttp.ClientTimeout(total=3)) as session:
+        async with aiohttp.ClientSession(
+            timeout=aiohttp.ClientTimeout(total=3)
+            ) as session:
             async with session.get(
                 'https://duckduckgo.com/js/spice/currency/'
                 f'{self.amount}/{self.from_currency}/{self.conv_currency}'
@@ -59,12 +76,16 @@ class Converter:
                     data.pop(key, None)
 
                 if not data.get('to'):
-                    raise RuntimeError('Failed to get the exchange rate from DuckDuckGo')
+                    raise RuntimeError(
+                        'Failed to get the exchange rate from DuckDuckGo'
+                        )
 
                 conv = data.get('to')[0]
                 conv_amount = conv.get('mid')
 
                 if conv_amount is None:
-                    raise RuntimeError('Error when converting currency via DuckDuckGo')
+                    raise RuntimeError(
+                        'Error when converting currency via DuckDuckGo'
+                        )
 
                 self.conv_amount = float(conv_amount)

functions/create_chart.py

@@ -1,13 +1,14 @@
+from http import HTTPStatus
+
 import yaml
 import aiohttp
 
-from http import HTTPStatus
-
-config = yaml.safe_load(open('config.yaml'))
+config = yaml.safe_load(open('config.yaml', 'r', encoding='utf-8'))
 
 async def create_chart(from_currency: str, conv_currency: str) -> (dict, None):
     async with aiohttp.ClientSession(timeout=aiohttp.ClientTimeout(total=3)) as session:
-        async with session.get(f'{config["kekkai_instance"]}/api/getChart/month/', params={
+        async with session.get(
+            f'{config["kekkai_instance"]}/api/getChart/month/', params={
                 'from_currency': from_currency,
                 'conv_currency': conv_currency
                 }) as res:

main.py

@@ -1,8 +1,4 @@
-from functions.convert import Converter
-from utils.format_number import format_number
-from utils.inline_query import reply
-from functions.create_chart import create_chart
-
+import hashlib
 import yaml
 
 from aiohttp import web
@@ -13,10 +9,16 @@ from aiogram.enums import ParseMode
 from aiogram.webhook.aiohttp_server import SimpleRequestHandler, setup_application
 from aiogram.filters import CommandStart
 
-import hashlib
+from functions.convert import Converter
+from functions.create_chart import create_chart
+from utils.format_number import format_number
+from utils.inline_query import reply
 
-config = yaml.safe_load(open('config.yaml'))
-bot = Bot(token=config['telegram_token'], default=DefaultBotProperties(parse_mode=ParseMode.HTML))
+config = yaml.safe_load(open('config.yaml', 'r', encoding='utf-8'))
+bot = Bot(
+    token=config['telegram_token'],
+    default=DefaultBotProperties(parse_mode=ParseMode.HTML)
+    )
 
 router = Router()
 
@@ -57,13 +59,26 @@ async def currency(query: types.InlineQuery) -> None:
         try:
             conv.amount = float(args[0].replace(',', '.'))
             if conv.amount < 0:
-                return await reply(result_id, [("Negative amounts are not supported.", None, None)], query)
+                return await reply(
+                    result_id,
+                    [
+                        ("Negative amounts are not supported.", None, None)
+                        ],
+                        query
+                        )
 
         except ValueError:
-            return await reply(result_id, [("Please enter a valid number for the amount.",
+            return await reply(
+                result_id,
+                [
+                    (
+                        "Please enter a valid number for the amount.",
                         f'@{get_bot.username} USD RUB \n'
                         f'@{get_bot.username} 12 USD RUB',
-                                            None, None)], query)
+                        None, None
+                    )
+                ],
+                query)
 
         from_currency = args[1]
         conv_currency = args[2]
@@ -71,23 +86,37 @@ async def currency(query: types.InlineQuery) -> None:
         from_currency = args[0]
         conv_currency = args[1]
     else:
-        return await reply(result_id,
-                            [(
+        return await reply(
+            result_id,
+            [
+                (
                     'The source and target currency could not be determined.',
                     None, None
-                            )],
-                            query)
+                )
+            ],
+            query
+        )
 
     conv.from_currency = from_currency.upper()
     conv.conv_currency = conv_currency.upper()
     try:
         await conv.convert()
-    except RuntimeError as e:
-        return await reply(result_id, [('The currency exchange rate could not be determined', None, None)], query)
+    except RuntimeError:
+        return await reply(
+            result_id,
+            [
+                (
+                    'The currency exchange rate could not be determined', 
+                    None, None
+                )
+            ],
+            query
+        )
 
     chart = await create_chart(from_currency, conv_currency)
 
-    message = f'{format_number(conv.amount)} {conv.from_currency} = {conv.conv_amount} {conv.conv_currency}'
+    message = f'{format_number(conv.amount)} {conv.from_currency} ' \
+    f'= {conv.conv_amount} {conv.conv_currency}'
 
     results = [(message, None, None)]
 

requirements.txt

@@ -1,3 +1,4 @@
 aiohttp~=3.9.5
 PyYAML~=6.0.1
 aiogram~=3.15.0
+pytz~=2025.2

utils/format_number.py

@@ -11,7 +11,10 @@ def format_number(number):
         return formatted_integer
 
     fractional_str = f"{fractional_part:.30f}".split('.')[1]
-    first_non_zero = next((i for i, char in enumerate(fractional_str) if char != '0'), len(fractional_str))
+    first_non_zero = next(
+        (i for i, char in enumerate(fractional_str) if char != '0'),
+        len(fractional_str)
+        )
     result_fractional = fractional_str[:first_non_zero + 3]
     result_fractional = result_fractional.rstrip('0')
 

utils/inline_query.py

@@ -1,7 +1,7 @@
-from aiogram import types
-
 import re
 
+from aiogram import types
+
 async def reply(result_id: str, args: list, query: types.InlineQuery) -> None:
     if not args:
         return