B2B alıcılar için vadeli ödeme koşulları

api_version = "2026-10"

[[extensions]]
name = "Net payment terms for B2B buyers"
handle = "b2b-net-payment-terms"
type = "function"

  [[extensions.targeting]]
  target = "cart.payment-methods.transform.run"
  input_query = "src/cart_payment_methods_transform_run.graphql"
  export = "cart-payment-methods-transform-run"

  [extensions.build]
  command = ""
  path = "dist/function.wasm"

query CartPaymentMethodsTransformRunInput {
  cart {
    buyerIdentity {
      purchasingCompany {
        company {
          id
        }
      }
    }
  }
  paymentCustomization {
    metafield(namespace: "$app", key: "function-configuration") {
      jsonValue
    }
  }
}

// @ts-check

/**
 * @typedef {import("../generated/api").CartPaymentMethodsTransformRunInput} CartPaymentMethodsTransformRunInput
 * @typedef {import("../generated/api").CartPaymentMethodsTransformRunResult} CartPaymentMethodsTransformRunResult
 */

/** Net terms Shopify accepts for dueInDays in API version 2026-10. */
const SUPPORTED_DUE_IN_DAYS = [7, 15, 30, 45, 60, 90];

/** Settings stored as JSON in the customization's metafield. */
const DEFAULT_CONFIG = {
  // Terms for every company buyer without an override below.
  dueInDays: 30,
  // Company ID → days, e.g. { "gid://shopify/Company/1234567890": 60 }.
  companyDueInDays: /** @type {Record<string, number>} */ ({}),
  // Optional deposit (1–99 % of the order total) paid at checkout; null for none.
  depositPercentage: /** @type {number | null} */ (null),
};

/** @type {CartPaymentMethodsTransformRunResult} */
const NO_CHANGES = { operations: [] };

/**
 * @param {CartPaymentMethodsTransformRunInput} input
 * @returns {CartPaymentMethodsTransformRunResult}
 */
export function cartPaymentMethodsTransformRun(input) {
  const company = input.cart.buyerIdentity?.purchasingCompany?.company;
  // Consumers (no purchasing company) keep paying at checkout.
  if (!company) return NO_CHANGES;

  const config = { ...DEFAULT_CONFIG, ...input.paymentCustomization?.metafield?.jsonValue };
  const dueInDays = (config.companyDueInDays ?? {})[company.id] ?? config.dueInDays;
  // An unsupported value would make Shopify reject the operation; leave the
  // company's own terms in place instead.
  if (!SUPPORTED_DUE_IN_DAYS.includes(dueInDays)) return NO_CHANGES;

  // Shopify accepts a deposit of 1–99 %; anything else is left out rather than rejected.
  const percentage = config.depositPercentage;
  const deposit = Number.isFinite(percentage) && percentage >= 1 && percentage <= 99 ? { percentage } : null;
  return {
    operations: [{ paymentTermsSet: { paymentTerms: { net: { dueInDays, deposit } } } }],
  };
}