659 lines
27 KiB
Python
659 lines
27 KiB
Python
"""
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AUTHOR:
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Khushal P Soonderji
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DATE:
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Saturday, 28th Dec., 2024
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OBJECTIVE:
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To handle all payments-related behaviour from one place.
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REFERENCES:
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N/A
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DOWNLOADS:
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N/A
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"""
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# *****************************************************************************************************************
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# ***** ****
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# *** IMPORT ***
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# ***** ****
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# *****************************************************************************************************************
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# To make sibling directories accessible for imports:
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import sys
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sys.path.append(".")
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sys.path.append("..")
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# For Quart:
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from quart import current_app
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# My async utils:
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from utils_v2.string import json
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from utils_v2.date_time import date_time
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from utils_v2.database.async_mysql_v2 import AsyncMySQL
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from utils_v2.database.async_mongo_v2 import AsyncMongo
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from utils_v2.cache.async_redis_cache_v2 import AsyncRedisCache
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# Controllers:
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from controllers_v2.core.auth_token import CoreAuthTokenController
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# Models:
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from models.core.user import CoreUserInfoModel
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from models.core.auth_token import CoreAuthTokenModel
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from models.core.payment import CorePaymentModel, PaymentEvent, CustomerDetails
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from models.api.finstitutions.payments.request import (
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PGPaymentRequestData,
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PaymentRequestOneResult,
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PaymentCallbackResult
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)
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# To work with MongoDB:
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from bson import ObjectId
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# To work with datatypes:
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from typing import List, Any
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# To make HTTP requests:
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import httpx
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# To make abstract classes:
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from abc import ABC, abstractmethod
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# *****************************************************************************************************************
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# ***** ****
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# *** MACROS / ONE-TIME INIT ***
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# ***** ****
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# *****************************************************************************************************************
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# --- Nothing Yet
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# *****************************************************************************************************************
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# ***** ****
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# *** VARIABLES ***
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# ***** ****
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# *****************************************************************************************************************
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# --- Nothing Yet
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# *****************************************************************************************************************
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# ***** ****
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# *** FUNCTIONS ***
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# ***** ****
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# *****************************************************************************************************************
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# --- Nothing Yet
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# *****************************************************************************************************************
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# ***** ****
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# *** CLASSES ***
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# ***** ****
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# *****************************************************************************************************************
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class PaymentsController(CoreAuthTokenController, ABC):
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# ┏┓┓ ┓┏
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# ┃ ┃┏┓┏┏ ┃┃┏┓┏┓┏
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# ┗┛┗┗┻┛┛ ┗┛┗┻┛ ┛
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# For MongoDB:
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PAYMENTS_COLLECTION = "_payments"
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# ┏┓
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# ┃ ┏┓┏┓┏╋┏┓┓┏┏╋┏┓┏┓
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# ┗┛┗┛┛┗┛┗┛ ┗┻┗┗┗┛┛
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def __init__(
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self,
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cache: AsyncRedisCache = None,
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http_client: httpx.AsyncClient = None,
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alert_url: str = None,
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base_filter: dict = None,
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debug: bool = True,
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debug_prefix: str = "Payments (C) | ",
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debug_only_errors: bool = True
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):
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"""
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This is the foundational controller for all trading/stockbroking services. This is built on top of the
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authorization model, and, in turn, the individual stockbroking clients should be built on top of this.
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:param cache: The object to use for caching results from database calls.
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:param http_client: The HTTP client
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:param base_filter: The basic filter that will be applied to all fetching/updating queries. WARNING: THE BASE
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FILTER WILL ALWAYS BE APPLIED AUTOMATICALLY. SET THIS UP WISELY.
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:param debug: Whether, or not, you would like to print debugging messages:
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:param debug_prefix: The prefix to print with the debugging messages.
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:param debug_only_errors: Whether you would like to print only error messages or all messages.
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:return: None.
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"""
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# Declare the service type:
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this_service_type = "paymentGateway"
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# Prepare base filter:
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this_filter = {}
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for k, v in (base_filter or {}).items(): this_filter[k] = v
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this_filter["serviceType"] = this_service_type
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# Invoke the parent's constructor:
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CoreAuthTokenController.__init__(
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self,
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cache = cache,
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alert_url = alert_url,
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http_client = http_client,
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base_filter = this_filter,
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debug = debug,
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debug_prefix = debug_prefix,
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debug_only_errors = debug_only_errors
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)
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# Init a variable in a parent:
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self._service_type = this_service_type
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# ┓ • ┏┓
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# ┃ ┓┏╋ ┃┃┏┓┓┏┏┳┓┏┓┏┓╋┏
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# ┗┛┗┛┗ ┣┛┗┻┗┫┛┗┗┗ ┛┗┗┛
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# ┛
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# These are simply for retrieving payment records.
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# You need to already have them saved to the database.
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async def count_payments(
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self,
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mongo_data_conn: AsyncMongo,
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token_ids: List[ObjectId | str],
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additional_filter: dict = None
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) -> int:
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"""
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Just counts the no. of payment records that match a given set of conditions.
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:param mongo_data_conn: The instance of the database connector to use for the operation.
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:param token_ids: The token ids of the accounts from which these payment details must be fetched.
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:param additional_filter: Any addition filters to use.
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:return: The no. of payment records that match the given conditions.
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"""
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# Prepare the filter:
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if not isinstance(token_ids, list): token_ids = [token_ids]
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token_ids = [ObjectId(t) for t in token_ids]
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filter_json = {"tokenId": {"$in": token_ids}}
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if additional_filter:
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for k, v in additional_filter.items():
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filter_json[k] = v
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# Get the count of the documents that match the criteria:
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count = await mongo_data_conn.count(
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collection = self.PAYMENTS_COLLECTION,
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filter = filter_json,
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raise_exception = True
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)
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# Done here:
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return count
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async def list_payments(
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self,
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mongo_data_conn: AsyncMongo,
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token_ids: List[ObjectId | str],
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limit: int = 100,
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skip: int = 0,
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additional_filter: dict = None
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) -> List[CorePaymentModel] | None:
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"""
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Fetches many payment details in one call, but just their previews.
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:param mongo_data_conn: The instance of the database connector to use for the operation.
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:param token_ids: The token ids of the accounts from which these messages must be fetched.
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:param limit: The max. no. of payment details to retrieve in this call.
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:param skip: The no. of initial payment details to skip. Useful for pagination.
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:param additional_filter: Any addition filters to use.
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:return: The list of payments (as the payments model). This list can be empty.
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"""
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# Prepare the filter:
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if not isinstance(token_ids, list): token_ids = [token_ids]
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token_ids = [ObjectId(t) for t in token_ids]
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filter_json = {"tokenId": {"$in": token_ids}}
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if additional_filter:
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for k, v in additional_filter.items():
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filter_json[k] = v
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# We fetch the messages that are identified by a specific token id,
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# with the specified fetching limits, while enforcing the sorting condition:
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records = await mongo_data_conn.find_many(
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collection = self.PAYMENTS_COLLECTION,
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filter = filter_json,
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projection = {"events": False},
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limit = limit,
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skip = skip,
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sort = {"ts": -1},
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raise_exception = True
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)
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# Convert the fetched records to instances of the data model and return:
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for record in records: record["events"] = []
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return [CorePaymentModel(**record) for record in records]
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async def get_payment(
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self,
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mongo_data_conn: AsyncMongo,
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payment_id: ObjectId | str
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) -> CorePaymentModel | None:
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"""
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Gets one payment detail if you know its payment id.
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:param mongo_data_conn: The instance of the database connector to use for the operation.
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:param payment_id: The id of the payment detail that needs to be read.
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:return: The contents of that one payment detail in a structured format.
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"""
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# We fetch the whole payload of that one message:
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record = await mongo_data_conn.find_one(
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collection = self.PAYMENTS_COLLECTION,
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filter = {"_id": ObjectId(payment_id)},
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raise_exception = True
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)
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# If no such message was found:
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if record is None: return None
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# If a record was found,
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# we return it as our data model:
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return CorePaymentModel(**record)
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async def get_payment_by_client_reference_id(
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self,
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mongo_data_conn: AsyncMongo,
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client_reference_id: str
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) -> CorePaymentModel | None:
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"""
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Gets one payment detail if you know its payment id.
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:param mongo_data_conn: The instance of the database connector to use for the operation.
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:param client_reference_id: The way the client identifies this payment. You need to pass this only on the first
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event. Typically, when you initiate the payment request.
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:return: The contents of that one payment detail in a structured format.
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"""
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# We fetch the whole payload of that one message:
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record = await mongo_data_conn.find_one(
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collection = self.PAYMENTS_COLLECTION,
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filter = {"clientPaymentReferenceId": client_reference_id},
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raise_exception = True
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)
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# If no such message was found:
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if record is None: return None
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# If a record was found,
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# we return it as our data model:
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return CorePaymentModel(**record)
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# ┳┳ ┓ ┏┓
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# ┃┃┏┓┏┫┏┓╋┏┓ ┃┃┏┓┓┏┏┳┓┏┓┏┓╋┏
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# ┗┛┣┛┗┻┗┻┗┗ ┣┛┗┻┗┫┛┗┗┗ ┛┗┗┛
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# ┛ ┛
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# We don't support updating payments themselves,
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# but we will allow updating fields like tags, adding events, etc.
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async def add_receipt(
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self,
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sql_conn: AsyncMySQL,
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mongo_data_conn: AsyncMongo,
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payment: CorePaymentModel,
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session_token: str = None
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) -> bool:
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"""
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The API endpoint that initiates the payment request will send details for calling this procedure in the
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'metadata' field. We take those values and invoke the procedure to add a receipt in the database's records.
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:param sql_conn: The database connection to use to perform this activity.
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:param mongo_data_conn: The database connection to use to perform this activity.
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:param payment: The record of the payment whose details need to be added as a receipt.
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:param session_token: The session token of the user to identify whose request caused this receipt update.
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:return: True is the receipt was added, else False.
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"""
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# Call the database's procedure:
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sql_json = await self.call_procedure(
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sql_conn = sql_conn,
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proc_name = "accounting_receipt_add",
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proc_args = (
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payment.metadata.idClient, # .................................... p_client_id
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date_time.get_current_ist_date_time().strftime("%Y-%m-%d"), # ... p_date
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payment.client, # ............................................... p_source
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payment.amount, # ............................................... p_amount
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payment.metadata.reference, # ................................... p_reference
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payment.metadata.inAccount, # ................................... p_in_account
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payment.metadata.idUser, # ...................................... p_user_id
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payment.metadata.documentUrl, # ................................. p_document_url
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json.to_string(payment.metadata.againstReference) # ............. p_notes
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),
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retry_count = 1,
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backoff_seconds = 0.5,
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backoff_multiplier = 1.1,
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session_token = session_token,
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alert_on_all_failures = True
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)
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# Return the response:
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if sql_json["status"] == 1: return True
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else: return False
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async def add_sales_transaction(
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self,
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sql_conn: AsyncMySQL,
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mongo_data_conn: AsyncMongo,
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payment: CorePaymentModel,
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session_token: str = None
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) -> bool:
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"""
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??? Fuck it. Not worth breaking your head over.
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:param sql_conn: The database connection to use to perform this activity.
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:param mongo_data_conn: The database connection to use to perform this activity.
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:param payment: The record of the payment whose details need to be added as a receipt.
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:param session_token: The session token of the user to identify whose request caused this receipt update.
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:return: True is the receipt was added, else False.
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"""
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# If this is not an against-sale kind of transaction:
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if not payment.metadata.againstReference.get("against", "MKC").strip().lower().find("against sale") >= 0:
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return True
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# If this is against some sale:
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success = False
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api_input_json = {
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"transactionDate": date_time.get_current_ist_date_time().strftime("%Y-%m-%d"),
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"clientId": payment.metadata.idClient,
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"clientName": payment.metadata.clientName,
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"clientAddress": None,
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"deliveryAddress": None,
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"total": payment.amount,
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"documentUrl": None,
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"invoiceNo": None,
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"deliveryBoyId": None,
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"deliveryBoyName": None,
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"lineItems": payment.metadata.againstReference["salesItems"]
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}
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print("ADD SALES TXN INPUT JSON:", json.to_string(api_input_json))
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api_response = await current_app.http_client.post(
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url = "https://api.thecaoffice.com/account/sales/transaction/add",
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headers = {"X-Session-Token": session_token},
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json = api_input_json
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)
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try: api_json = api_response.json()
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except: api_json = {}
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print(f"ADD SALES TXN ({api_response.status_code}):", api_response.content)
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print("ADD SALES TXN:", json.to_string(api_json))
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if api_response.is_success: success = True
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# Done here:
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return success
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async def add_event_by_payment_id(
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self,
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mongo_data_conn: AsyncMongo,
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payment_id: ObjectId | str,
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event: PaymentEvent,
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client_reference_id: str = None
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) -> bool:
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"""
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Add an event to an existing record of a payment detail.
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:param mongo_data_conn: The instance of the database connector to use for the operation.
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:param payment_id: The id of the payment detail that needs to be read.
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:param event: The event that occurred. This will typically be generated by the third-party client.
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:param client_reference_id: The way the client identifies this payment. You need to pass this only on the first
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event. Typically, when you initiate the payment request.
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:return: True if successfully noted, else False.
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"""
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# Prepare the update document:
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update_json = {
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"$push": {
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"events": event.model_dump()
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},
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"$set": {
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"lastEventTs": event.eventTs,
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"lastEventMessage": event.message,
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"lastPaymentStatus": event.paymentStatus,
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}
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}
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if client_reference_id: update_json["$set"]["clientPaymentReferenceId"] = client_reference_id
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# Try to update the existing record:
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return await mongo_data_conn.update_one(
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collection = self.PAYMENTS_COLLECTION,
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filter = {"_id": ObjectId(payment_id)},
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update = update_json,
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upsert = False,
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raise_exception = True
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)
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async def add_event_by_client_reference_id(
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self,
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mongo_data_conn: AsyncMongo,
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client_reference_id: str,
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event: PaymentEvent,
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) -> bool:
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"""
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Add an event to an existing record of a payment detail.
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:param mongo_data_conn: The instance of the database connector to use for the operation.
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:param event: The event that occurred. This will typically be generated by the third-party client.
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:param client_reference_id: The way the client identifies this payment. You need to pass this only on the first
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event. Typically, when you initiate the payment request.
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:return: True if successfully noted, else False.
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"""
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# Prepare the update document:
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update_json = {
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"$push": {
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"events": event.model_dump()
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},
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"$set": {
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"lastEventTs": event.eventTs,
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"lastEventMessage": event.message,
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"lastPaymentStatus": event.paymentStatus
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}
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}
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if client_reference_id: update_json["$set"]["clientPaymentReferenceId"] = client_reference_id
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# Try to update the existing record:
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return await mongo_data_conn.update_one(
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collection = self.PAYMENTS_COLLECTION,
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filter = {"clientPaymentReferenceId": client_reference_id},
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update = update_json,
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upsert = False,
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raise_exception = True
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)
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async def update_tags(
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self,
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mongo_data_conn: AsyncMongo,
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payment_id: ObjectId | str,
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unset_tags: List[str] = None,
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set_tags: List[str] = None
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) -> bool:
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"""
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Updates the tags on one payment. The tags to remove are processed first, the ones to add are processed later.
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:param mongo_data_conn: The instance of the database connector to use for the operation.
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:param payment_id: The id of the payment detail that needs to be read.
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:param unset_tags: The tags to remove from the payment record.
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:param set_tags: The tags to add to the payment record.
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:return: True if the update was successful, else False.
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"""
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# Update the tags:
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return await mongo_data_conn.update_one(
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collection = self.PAYMENTS_COLLECTION,
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filter = {"_id": ObjectId(payment_id)},
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update = [{
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"$set": {
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"tags": {
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"$let": {
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"vars": {
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"removed_tags": {
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"$setDifference": [
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"$tags",
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unset_tags
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]
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|
}
|
|
},
|
|
"in": {
|
|
"$setUnion": [
|
|
"$$removed_tags",
|
|
set_tags
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}],
|
|
raise_exception = True
|
|
)
|
|
|
|
# ┳┓ ┓ ┏┓
|
|
# ┃┃┏┓┃┏┓╋┏┓ ┃┃┏┓┓┏┏┳┓┏┓┏┓╋┏
|
|
# ┻┛┗ ┗┗ ┗┗ ┣┛┗┻┗┫┛┗┗┗ ┛┗┗┛
|
|
# ┛
|
|
|
|
# No support whatsoever for deleting payment records!
|
|
|
|
# ┳┓ ┏┓
|
|
# ┣┫┏┓┏┓┓┏┏┓┏╋ ┃┃┏┓┓┏┏┳┓┏┓┏┓╋┏
|
|
# ┛┗┗ ┗┫┗┻┗ ┛┗ ┣┛┗┻┗┫┛┗┗┗ ┛┗┗┛
|
|
# ┗ ┛
|
|
|
|
async def init_payment(
|
|
self,
|
|
mongo_data_conn: AsyncMongo,
|
|
auth_token: CoreAuthTokenModel,
|
|
user_info: CoreUserInfoModel,
|
|
payment_request: PGPaymentRequestData,
|
|
tags: List[Any]
|
|
) -> ObjectId | None:
|
|
|
|
"""
|
|
Do this before you hit the third-party client's service when requesting payments. This creates a validated
|
|
payment record in the database which can then be used as reference for successive updates.
|
|
:param mongo_data_conn: The database connection to use to perform this activity.
|
|
:param auth_token: The token that has to be used to fetch the data.
|
|
:param user_info: The user of your platform, NOT THE PAYING PARTY.
|
|
:param payment_request: The payment request that came in through the API call.
|
|
:param tags: And initial tags to apply to this payment's records that you know you will need for filtering.
|
|
:return: The id of the MongoDB document that will hold the full record of this payment.
|
|
"""
|
|
|
|
# Model the payment's request. This ensures we're validating the inputs.
|
|
payment_model = CorePaymentModel(
|
|
user = user_info,
|
|
customer = CustomerDetails(
|
|
name = payment_request.customerName,
|
|
contactNo = payment_request.customerNo,
|
|
payerNo = payment_request.payerNo,
|
|
email = payment_request.email
|
|
),
|
|
lastEventMessage = "Payment Request Queued",
|
|
lastPaymentStatus = "queued",
|
|
tokenId = auth_token.authTokenId,
|
|
amount = payment_request.amount,
|
|
currencyCode = payment_request.currencyCode,
|
|
metadata = payment_request.metadata.model_dump(),
|
|
tags = list(set(payment_request.tags + (tags or []))),
|
|
serviceType = "paymentGateway",
|
|
client = auth_token.client,
|
|
clientPaymentReferenceId = None,
|
|
events = []
|
|
)
|
|
|
|
# Simply insert the document and return the id:
|
|
return await mongo_data_conn.insert_one(
|
|
collection = self.PAYMENTS_COLLECTION,
|
|
document = payment_model.model_dump(),
|
|
raise_exception = True
|
|
)
|
|
|
|
@abstractmethod
|
|
async def request_payment(
|
|
self,
|
|
sql_conn: AsyncMySQL,
|
|
mongo_data_conn: AsyncMongo,
|
|
auth_token: CoreAuthTokenModel,
|
|
user_info: CoreUserInfoModel,
|
|
payment_request: PGPaymentRequestData,
|
|
) -> PaymentRequestOneResult:
|
|
|
|
"""
|
|
To request payment from someone through a payment gateway.
|
|
:param sql_conn: Only needed when a payment gateway says that the credentials are invalid and the account needs
|
|
to be disabled.
|
|
:param mongo_data_conn: The database connection to use to perform this activity.
|
|
:param auth_token: The token that has to be used to fetch the data.
|
|
:param user_info: The info. of your user, so that you can identify who requested the payment.
|
|
:param payment_request: The data that came in with the APi call.
|
|
:return: The structured response form the payment gateway.
|
|
"""
|
|
|
|
pass
|
|
|
|
@abstractmethod
|
|
async def handle_payment_callback(
|
|
self,
|
|
sql_conn: AsyncMySQL,
|
|
mongo_data_conn: AsyncMongo,
|
|
inbound_data: dict,
|
|
inbound_headers: dict
|
|
) -> PaymentCallbackResult:
|
|
|
|
"""
|
|
Whenever the payment gateway sends an update about a requested payment, we use this method to update our records
|
|
as per the specification of the third-party payment gateway.
|
|
:param sql_conn: Only needed when a payment gateway says that the credentials are invalid and the account needs
|
|
to be disabled.
|
|
:param mongo_data_conn: The database connection to use to perform this activity.
|
|
:param inbound_data: The data sent by the payment gateway in their update.
|
|
:param inbound_headers: The headers sent by the payment gateway in their update.
|
|
:return: A structured response about the process of updating the payment event.
|
|
"""
|
|
|
|
# There are 3 main steps here:
|
|
# 01. Add the payment's update event to the main record,
|
|
# 02. Add the receipt (if payment successful),
|
|
# 03. Disable the payment auth-token if the gateway says that the credentials are invalid.
|
|
|
|
pass
|
|
|
|
|
|
# *****************************************************************************************************************
|
|
# ***** ****
|
|
# *** MAIN PROGRAM ***
|
|
# ***** ****
|
|
# *****************************************************************************************************************
|
|
|
|
|
|
if __name__ == "__main__":
|
|
|
|
pass
|