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Python SDK for Finanfut Billing External API

Project description

Finanfut Billing Python SDK

Client oficial sincrònic per consumir la Finanfut Billing External API (/external/v1) amb models compatibles amb Pydantic v2, ara preparat per treballar amb Business Units.

Instal·lació

  • Pydantic 2.x: pip install finanfut-billing-sdk>=2.0
  • Pydantic 1.x: pip install finanfut-billing-sdk<2.0
  • Des del repositori local: pip install -e backend/sdk

Dependències principals:

  • pydantic>=2.0,<3.0
  • requests>=2.31

Configuració bàsica i Business Units

from finanfut_billing_sdk import FinanfutBillingClient

client = FinanfutBillingClient(
    base_url="https://api.finanfut-billing.com",
    api_key="sk_live_xxx",
    business_unit_id="bu_default",  # opcional: aplicada a serveis/factures/liquidacions per defecte
    timeout=10,
    max_retries=2,
)

Com funciona business_unit_id

  • Global al client: passa business_unit_id al constructor i s'aplicarà automàticament a les operacions compatibles.
  • Per operació: pots sobreescriure-la en cada mètode (business_unit_id="bu_alt").
  • Endpoints sense BU: tax rates i partner payment methods són d'abast de companyia i ignoren la BU (l'SDK emet un avís si n'hi ha una definida).
  • Liquidacions (settlements): la BU és opcional però s'envia quan està disponible per enrutar payouts.
  • External API: serveis i factures externes accepten BU però actualment poden ignorar-la; l'SDK ja no la tracta com a obligatòria.

Exemples d'ús

Crear producte/servei amb BU

from decimal import Decimal
from finanfut_billing_sdk.models import ExternalServiceUpsertRequest

payload = ExternalServiceUpsertRequest(
    external_reference="service_abc",
    type="service",
    name="Monthly subscription",
    description="Access to premium content",
    price=Decimal("29.90"),
    vat_rate_code="vat_21",
)
service = client.upsert_service(payload)  # usa la BU global

Crear factura amb BU (sobre-escrivint la BU global)

from finanfut_billing_sdk.models import ExternalInvoiceCreateRequest, ExternalInvoiceLine

invoice = client.create_invoice(
    ExternalInvoiceCreateRequest(
        client_external_reference="client_123",
        currency="EUR",
        lines=[
            ExternalInvoiceLine(
                service_external_reference="service_abc",
                description="Premium plan",
                qty=1,
                price=29.90,
                vat_rate_id="tax_rate_uuid",
            ),
        ],
    ),
    business_unit_id="bu_sales",  # prioritat respecte la BU global
)

Operacions sense BU (àmbit de companyia)

# Els tax rates i partner payment methods ignoren la BU.
client.list_tax_rates()
client.partner_payment_methods.list_partner_payment_methods()

Idempotència en liquidacions

settlement = client.settlements.create_settlement(
    payload,
    idempotency_key="settlement-create-2024-12-31",
)

Enviar factura i registrar pagament

from finanfut_billing_sdk.models import ExternalInvoiceEmailRequest, ExternalPaymentCreateRequest

email = client.send_invoice_email(
    invoice.invoice_id,
    ExternalInvoiceEmailRequest(subject="La teva factura", body="Adjunt trobaràs el PDF"),
)

payment = client.register_payment(
    invoice.invoice_id,
    ExternalPaymentCreateRequest(amount=29.90, method="stripe"),
)

Checkout i onboarding de Stripe Connect

from finanfut_billing_sdk.models import ExternalCheckoutCreateRequest, ExternalConnectOnboardRequest

checkout = client.payments.create_checkout(
    "stripe",
    ExternalCheckoutCreateRequest(
        amount=29.90,
        currency="EUR",
        business_unit_id="bu_sales",
        provider_payload={"payment_method_types": ["card"]},
    ),
)

connect = client.payments.connect_onboard(
    "stripe",
    ExternalConnectOnboardRequest(
        provider_id="provider_uuid",
        return_url="https://app.example.com/connect/return",
        refresh_url="https://app.example.com/connect/refresh",
    ),
)

Checkout sessions de Stripe (external)

from finanfut_billing_sdk.models import ExternalCheckoutSessionCreateRequest

session = client.payments.create_checkout_session(
    ExternalCheckoutSessionCreateRequest(
        amount=49.90,
        currency="EUR",
        success_url="https://app.example.com/ok",
        cancel_url="https://app.example.com/cancel",
        description="Pagament",
    ),
    idempotency_key="checkout-session-2024-12-01",
)

Validació de targeta sense cobrar

from finanfut_billing_sdk.models import PaymentMethodSetupStartRequest, SubscriptionPayer

setup = client.payment_method_setups.start(
    PaymentMethodSetupStartRequest(
        request_id="membership-enrollment-123-card-setup",
        business_unit_id="bu_sports",
        subject_type="membership_enrollment",
        subject_id="enrollment_123",
        billing_client_id="client_uuid",
        payer=SubscriptionPayer(email="payer@example.com", name="Payer One"),
        success_url="https://sports.example.com/memberships/card-ok",
        cancel_url="https://sports.example.com/memberships/card-cancel",
        metadata={"origin": "finanfut-sports"},
    ),
    idempotency_key="membership-enrollment-123-card-setup",
)
print(setup.checkout_url, setup.payment_method_status)

Aquest flux crea un Stripe Checkout mode=setup i no cobra cap import. Per altes pendents d'aprovació, no useu subscriptions.start_subscription() només per validar targeta; espereu el webhook payment_method.saved i creeu/activeu els cobraments posteriors amb el customer i payment method guardats.

Subscripcions BU

from finanfut_billing_sdk.models import SubscriptionPricingSnapshot, SubscriptionStartRequest

payload = SubscriptionStartRequest(
    request_id="sports-pro-2025-01",
    business_unit_id="bu_sales",
    subject_type="team",
    subject_id="team_123",
    billing_client_id="client_uuid",
    bu_plan_ref="pro_v3",
    pricing_snapshot=SubscriptionPricingSnapshot(
        amount=29.9,
        currency="EUR",
        interval="month",
    ),
    success_url="https://app.example.com/billing/success",
    cancel_url="https://app.example.com/billing/cancel",
)

response = client.subscriptions.start_subscription(payload)

Errors

from finanfut_billing_sdk.errors import (
    FinanfutBillingAuthError,
    FinanfutBillingServiceError,
    FinanfutBillingValidationError,
)

try:
    client.list_tax_rates()
except FinanfutBillingAuthError:
    print("API key incorrecta o sense permisos")
except FinanfutBillingValidationError as e:
    print("Error de validació:", e.payload)
except FinanfutBillingServiceError as e:
    print(f"Error de servei ({e.request_id}): {e.error}")
    if e.retry_after is not None:
        print(f"Reintenta després de {e.retry_after:.0f}s")

Els errors del backend inclouen sempre error, message i request_id. El client reintenta automàticament errors transitoris (429, 500, 502, 503, 504) en lectures i en mutacions només quan la petició porta Idempotency-Key.

Publicació a PyPI

El paquet està preparat per publicar-se a PyPI quan es creen tags v* al repositori. El workflow publish-sdk.yml valida la versió (__version__) i fa l'upload amb Twine.

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