refactor: payments providers
This commit is contained in:
3252a8
@@ -0,0 +1,444 @@
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import hashlib
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import hmac
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import json
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import logging
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import secrets
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from typing import Any, Dict, Optional, Tuple
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from aiogram import Bot, F, Router, types
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from aiohttp import web
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from sqlalchemy.ext.asyncio import AsyncSession
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from sqlalchemy.orm import sessionmaker
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from bot.middlewares.i18n import JsonI18n
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from bot.services.referral_service import ReferralService
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from bot.services.subscription_service import SubscriptionService
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from config.settings import Settings
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from db.dal import payment_dal
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from .base import PaymentProviderSpec, ServiceFactoryContext, WebAppPaymentContext
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from .shared import (
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HttpClientMixin,
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PaymentSuccessRequest,
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build_payment_record_payload,
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create_webapp_payment_record,
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describe_payment,
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finalize_successful_payment,
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finalize_webapp_link_payment,
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first_value,
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format_decimal_amount,
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lookup_payment_by_order_or_provider_id,
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make_translator,
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notify_callback_parse_error,
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notify_payment_record_failure,
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notify_service_unavailable,
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notify_user_payment_failed,
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parse_payment_callback,
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payment_failed,
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payment_unavailable,
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post_json_request,
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render_link_or_fail,
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)
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_LOG = "severpay"
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class SeverPayService(HttpClientMixin):
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def __init__(
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self,
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*,
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bot: Bot,
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settings: Settings,
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i18n: JsonI18n,
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async_session_factory: sessionmaker,
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subscription_service: SubscriptionService,
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referral_service: ReferralService,
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default_return_url: str,
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):
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self.bot = bot
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self.settings = settings
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self.i18n = i18n
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self.async_session_factory = async_session_factory
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self.subscription_service = subscription_service
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self.referral_service = referral_service
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self.base_url = (settings.SEVERPAY_BASE_URL or "https://severpay.io/api/merchant").rstrip(
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"/"
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)
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self.mid = settings.SEVERPAY_MID
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self.token = settings.SEVERPAY_TOKEN or ""
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self.return_url = settings.SEVERPAY_RETURN_URL or f"https://t.me/{default_return_url}"
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self.lifetime_minutes = settings.SEVERPAY_LIFETIME_MINUTES
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self._init_http_client(total_timeout=15)
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self.configured: bool = bool(settings.SEVERPAY_ENABLED and self.mid and self.token)
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if not self.configured:
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logging.warning(
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"SeverPayService initialized but not fully configured. Payments disabled."
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)
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@staticmethod
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def _format_amount(amount: float) -> str:
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return f"{format_decimal_amount(amount):.2f}"
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def _sign_payload(self, payload: Dict[str, Any]) -> str:
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message = json.dumps(payload, ensure_ascii=False, separators=(",", ":"))
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return hmac.new(
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self.token.encode("utf-8"), message.encode("utf-8"), hashlib.sha256
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).hexdigest()
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def _build_signed_body(self, extra: Dict[str, Any]) -> Dict[str, Any]:
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body: Dict[str, Any] = {
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"mid": self.mid,
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"salt": secrets.token_hex(8),
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}
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body.update(extra)
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sorted_body = dict(sorted(body.items()))
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sorted_body["sign"] = self._sign_payload(sorted_body)
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return sorted_body
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def _validate_signature(self, payload: Dict[str, Any]) -> bool:
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provided_sign = str(payload.get("sign") or "")
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if not provided_sign or not self.token:
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return False
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# Webhook signatures are calculated on the original payload order (without sorting).
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data = {k: v for k, v in payload.items() if k != "sign"}
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expected_sign = self._sign_payload(data)
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return hmac.compare_digest(provided_sign, expected_sign)
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async def create_payment(
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self,
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*,
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payment_db_id: int,
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user_id: int,
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amount: float,
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currency: Optional[str],
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) -> Tuple[bool, Dict[str, Any]]:
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if not self.configured:
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logging.error("SeverPayService is not configured. Cannot create payment.")
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return False, {"message": "service_not_configured"}
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session = await self._get_session()
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url = f"{self.base_url}/payin/create"
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currency_code = (currency or self.settings.DEFAULT_CURRENCY_SYMBOL or "RUB").upper()
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body = {
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"order_id": str(payment_db_id),
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"amount": self._format_amount(amount),
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"currency": currency_code,
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"client_email": f"{user_id}@telegram.org",
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"client_id": str(user_id),
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"url_return": self.return_url,
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}
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if self.lifetime_minutes:
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body["lifetime"] = int(self.lifetime_minutes)
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success, response_data = await post_json_request(
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session,
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url,
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body=self._build_signed_body(body),
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log_prefix="SeverPay create_payment",
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# SeverPay marks success with both HTTP 200 *and* the top-level ``status`` flag.
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is_success=lambda status, data: status == 200 and bool((data or {}).get("status")),
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)
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if success:
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# SeverPay wraps the useful response inside ``data``; unwrap so callers
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# don't have to know that detail.
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return True, response_data.get("data") or response_data
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return False, response_data
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async def webhook_route(self, request: web.Request) -> web.Response:
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if not self.configured:
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return web.json_response({"status": False, "msg": "severpay_disabled"}, status=503)
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try:
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payload = await request.json()
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except Exception:
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logging.exception("SeverPay webhook: failed to parse JSON.")
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return web.json_response({"status": False, "msg": "bad_request"}, status=400)
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if not isinstance(payload, dict) or not self._validate_signature(payload):
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logging.error("SeverPay webhook: invalid signature or payload.")
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return web.json_response({"status": False, "msg": "invalid_signature"}, status=403)
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event_type = str(payload.get("type") or "").lower()
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data = payload.get("data") or {}
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if event_type != "payin" or not isinstance(data, dict):
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logging.warning("SeverPay webhook: unsupported event type '%s'", event_type)
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return web.json_response({"status": True})
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provider_payment_id = str(data.get("id") or data.get("uid") or "")
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order_id_raw = data.get("order_id")
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status = str(data.get("status") or "").lower()
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async with self.async_session_factory() as session:
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payment = await lookup_payment_by_order_or_provider_id(
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session,
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order_id_raw=order_id_raw,
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provider_payment_id=provider_payment_id or None,
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)
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if not payment:
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logging.error(
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"SeverPay webhook: payment not found (order_id=%s, provider_id=%s)",
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order_id_raw,
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provider_payment_id,
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)
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return web.json_response({"status": False, "msg": "payment_not_found"}, status=404)
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resolved_provider_id = provider_payment_id or str(payment.payment_id)
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payment_months = payment.purchased_gb or payment.subscription_duration_months or 1
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sale_mode = payment.sale_mode or (
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"traffic" if self.settings.traffic_sale_mode else "subscription"
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)
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if status == "success":
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try:
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await payment_dal.update_provider_payment_and_status(
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session,
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payment.payment_id,
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resolved_provider_id,
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"succeeded",
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)
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await session.commit()
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except Exception:
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await session.rollback()
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logging.exception(
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"SeverPay webhook: failed to mark payment %s as succeeded.",
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resolved_provider_id,
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)
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return web.json_response(
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{"status": False, "msg": "processing_error"}, status=500
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)
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outcome = await finalize_successful_payment(
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PaymentSuccessRequest(
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bot=self.bot,
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settings=self.settings,
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i18n=self.i18n,
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session=session,
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subscription_service=self.subscription_service,
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referral_service=self.referral_service,
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payment=payment,
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user_id=payment.user_id,
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amount=float(payment.amount),
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currency=payment.currency,
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sale_mode=sale_mode,
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months=payment_months,
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traffic_amount=float(payment_months),
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provider_subscription="severpay",
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provider_notification="severpay",
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db_user=payment.user,
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log_prefix="SeverPay webhook",
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)
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)
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if outcome is None:
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return web.json_response(
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{"status": False, "msg": "processing_error"}, status=500
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)
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return web.json_response({"status": True})
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if status in {"fail", "decline"}:
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try:
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await payment_dal.update_provider_payment_and_status(
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session,
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payment.payment_id,
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resolved_provider_id,
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"failed",
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)
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await session.commit()
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except Exception:
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await session.rollback()
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logging.exception(
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"SeverPay webhook: failed to mark payment %s as failed.",
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resolved_provider_id,
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)
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return web.json_response(
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{"status": False, "msg": "processing_error"}, status=500
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)
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await notify_user_payment_failed(
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bot=self.bot,
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settings=self.settings,
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i18n=self.i18n,
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session=session,
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payment=payment,
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)
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return web.json_response({"status": True})
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if status in {"process", "new"}:
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try:
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await payment_dal.update_provider_payment_and_status(
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session,
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payment.payment_id,
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resolved_provider_id,
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"pending_severpay",
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)
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await session.commit()
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except Exception:
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await session.rollback()
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logging.exception(
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"SeverPay webhook: failed to update pending status for %s.",
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resolved_provider_id,
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)
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return web.json_response({"status": True})
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logging.warning(
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"SeverPay webhook: unhandled status '%s' for payment %s",
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status,
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resolved_provider_id,
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)
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return web.json_response({"status": True})
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async def severpay_webhook_route(request: web.Request) -> web.Response:
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service: SeverPayService = request.app["severpay_service"]
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return await service.webhook_route(request)
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router = Router(name="user_subscription_payments_severpay_router")
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@router.callback_query(F.data.startswith("pay_severpay:"))
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async def pay_severpay_callback_handler(
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callback: types.CallbackQuery,
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settings: Settings,
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i18n_data: dict,
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severpay_service: SeverPayService,
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session: AsyncSession,
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):
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current_lang = i18n_data.get("current_language", settings.DEFAULT_LANGUAGE)
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i18n: Optional[JsonI18n] = i18n_data.get("i18n_instance")
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translator = make_translator(i18n, current_lang)
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if not i18n or not callback.message:
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await notify_callback_parse_error(callback, translator)
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return
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if not severpay_service or not severpay_service.configured:
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logging.error("SeverPay service is not configured or unavailable.")
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await notify_service_unavailable(callback, translator)
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return
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parts = parse_payment_callback(callback.data or "")
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if not parts:
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logging.error("Invalid pay_severpay data in callback: %s", callback.data)
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await notify_callback_parse_error(callback, translator)
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return
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currency_code = settings.DEFAULT_CURRENCY_SYMBOL or "RUB"
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payment_description = describe_payment(translator, parts)
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record_payload = build_payment_record_payload(
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user_id=callback.from_user.id,
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amount=parts.price,
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currency=currency_code,
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status="pending_severpay",
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description=payment_description,
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months=parts.months,
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provider="severpay",
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sale_mode=parts.sale_mode,
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)
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try:
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payment_record = await payment_dal.create_payment_record(session, record_payload)
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await session.commit()
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except Exception:
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await session.rollback()
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logging.exception(
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"SeverPay: failed to create payment record for user %s.", callback.from_user.id
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)
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await notify_payment_record_failure(callback, translator)
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return
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success, response_data = await severpay_service.create_payment(
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payment_db_id=payment_record.payment_id,
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user_id=callback.from_user.id,
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amount=parts.price,
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currency=currency_code,
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)
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await render_link_or_fail(
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callback,
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translator=translator,
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current_lang=current_lang,
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i18n=i18n,
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parts=parts,
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session=session,
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payment=payment_record,
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api_success=success,
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payment_url=first_value(response_data, "url", "payment_url", "paymentUrl"),
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provider_payment_id=first_value(response_data, "id", "uid"),
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log_prefix=_LOG,
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)
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def create_service(ctx: ServiceFactoryContext) -> SeverPayService:
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return SeverPayService(
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bot=ctx.bot,
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settings=ctx.settings,
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i18n=ctx.i18n,
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async_session_factory=ctx.async_session_factory,
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subscription_service=ctx.subscription_service,
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referral_service=ctx.referral_service,
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default_return_url=ctx.bot_username_for_default_return,
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)
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async def create_webapp_payment(ctx: WebAppPaymentContext) -> web.Response:
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settings = ctx.request.app["settings"]
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service: SeverPayService = ctx.request.app["severpay_service"]
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if not service or not service.configured:
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return payment_unavailable()
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currency = settings.DEFAULT_CURRENCY_SYMBOL or "RUB"
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try:
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payment = await create_webapp_payment_record(
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ctx,
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amount=ctx.price,
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currency=currency,
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status="pending_severpay",
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provider="severpay",
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)
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success, response_data = await service.create_payment(
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payment_db_id=payment.payment_id,
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user_id=ctx.user_id,
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amount=ctx.price,
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currency=currency,
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)
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except Exception:
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await ctx.session.rollback()
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logging.exception("SeverPay WebApp payment failed")
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return payment_failed()
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return await finalize_webapp_link_payment(
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session=ctx.session,
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payment=payment,
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api_success=success,
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payment_url=(
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first_value(response_data, "url", "payment_url", "paymentUrl") if success else None
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),
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provider_payment_id=first_value(response_data, "id", "uid"),
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log_prefix="SeverPay",
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)
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SPEC = PaymentProviderSpec(
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id="severpay",
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provider_key="severpay",
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label="SeverPay",
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webapp_label="SeverPay",
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webapp_labels={"ru": "SeverPay", "en": "SeverPay"},
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webapp_icon="CreditCard",
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telegram_labels={"ru": "SeverPay", "en": "SeverPay"},
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telegram_emoji="💳",
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pending_status="pending_severpay",
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enabled=lambda settings: settings.SEVERPAY_ENABLED,
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service_key="severpay_service",
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button_text_key="pay_with_severpay_button",
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callback_prefix="pay_severpay",
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router=router,
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create_service=create_service,
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webhook_path=lambda settings: settings.severpay_webhook_path,
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webhook_route=severpay_webhook_route,
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create_webapp_payment=create_webapp_payment,
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)
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