117 lines
3.7 KiB
Python
117 lines
3.7 KiB
Python
from aws_lambda_powertools import Logger
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from aws_lambda_powertools.utilities.data_classes import (
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EventBridgeEvent,
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event_source,
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)
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from aws_lambda_powertools.utilities.typing import LambdaContext
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from layercake.dateutils import now
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from layercake.dynamodb import (
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DynamoDBPersistenceLayer,
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KeyPair,
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SortKey,
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)
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from layercake.extra_types import CreditCard
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from boto3clients import dynamodb_client
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from config import IUGU_ACCOUNT_ID, IUGU_API_TOKEN, IUGU_TEST_MODE, ORDER_TABLE
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from iugu import Credentials, Iugu
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logger = Logger(__name__)
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dyn = DynamoDBPersistenceLayer(ORDER_TABLE, dynamodb_client)
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@event_source(data_class=EventBridgeEvent)
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@logger.inject_lambda_context
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def lambda_handler(event: EventBridgeEvent, context: LambdaContext) -> bool:
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new_image = event.detail['new_image']
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order_id = new_image['id']
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invoice_id = new_image['invoice_id']
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installments = new_image['installments']
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credit_card = CreditCard(**new_image['credit_card'])
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now_ = now()
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api_token = dyn.collection.get_item(
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KeyPair(
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pk=order_id,
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sk=SortKey(
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'METADATA#TEST_MODE',
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path_spec='iugu_api_token',
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),
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),
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default=None,
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raise_on_error=False,
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)
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test_mode = (api_token is not None) or IUGU_TEST_MODE
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credentials = Credentials(
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IUGU_ACCOUNT_ID,
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# Note: `api_token` can be set from the database
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api_token or IUGU_API_TOKEN,
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test_mode=test_mode,
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)
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iugu = Iugu(credentials)
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token = iugu.payment_token(credit_card)
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charge = iugu.charge(
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invoice_id=invoice_id,
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token=token['id'],
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installments=installments,
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)
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with dyn.transact_writer() as transact:
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if charge['success'] is True:
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transact.update(
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key=KeyPair(order_id, '0'),
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# Post-migration (orders): rename `payment_date` to `paid_at`
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update_expr='SET #status = :status, \
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payment_date = :now, \
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updated_at = :now',
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expr_attr_names={
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'#status': 'status',
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},
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expr_attr_values={
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':status': 'PAID',
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':now': now_,
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},
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cond_expr='attribute_exists(sk)',
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)
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transact.put(
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item={
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'id': order_id,
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'sk': f'TRANSACTION#ATTEMPT#{now_.isoformat()}',
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'brand': credit_card.brand,
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'last4': credit_card.last4,
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'status': 'SUCCEEDED',
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'transaction': charge,
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},
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)
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else:
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transact.put(
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item={
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'id': order_id,
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'sk': f'TRANSACTION#ATTEMPT#{now_.isoformat()}',
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'brand': credit_card.brand,
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'last4': credit_card.last4,
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'status': 'FAILED',
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'transaction': charge,
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},
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)
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transact.delete(key=KeyPair(order_id, 'TRANSACTION'))
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transact.update(
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key=KeyPair(order_id, 'TRANSACTION#STATS'),
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update_expr='SET #count = if_not_exists(#count, :zero) + :one, \
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last_attempt_succeeded = :succeeded, \
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updated_at = :now',
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expr_attr_names={
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'#count': 'payment_attempts',
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},
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expr_attr_values={
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':succeeded': charge['success'],
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':zero': 0,
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':one': 1,
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':now': now(),
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},
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)
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return charge['success']
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