B2B Fulfillment Constraints

index.js

// @ts-check
// Use JSDoc annotations for type safety.
/**
* @typedef {import("../generated/api").InputQuery} InputQuery
* @typedef {import("../generated/api").FunctionResult} FunctionResult
*/
/**
* @type {FunctionResult}
*/
const NO_CHANGES = {
  operations: [],
};
// The @shopify/shopify_function package will use the default export as your function entrypoint.
export default /**
* @param {InputQuery} input
* @returns {FunctionResult}
*/
  (input) => {
    let deliverableLineIds = [];

    if (input.cart.buyerIdentity?.purchasingCompany?.company?.id == null) { return NO_CHANGES; }

    for (const deliverableLine of input.cart.deliverableLines) {
      deliverableLineIds.push(deliverableLine.id);
    }

    // Find the location representing our Warehouse.
    let warehouseLocation = input.locations.find(location => location.name == "Warehouse");

    // Short-circuit and return no operations if the fulfillment location does not exist.
    if (warehouseLocation === undefined) { return NO_CHANGES; }

    // Construct the operations, including our MustFulfillFrom fulfillment constraint.
    let operations = [
      {
        mustFulfillFrom: {
          deliverableLineIds: deliverableLineIds,
          locationIds: [warehouseLocation.id]
        }
      }
    ];

    // Return the operation.
    return { operations: operations };
  };

input.graphql

query Input {
  cart {
    deliverableLines {
      id
    }
    buyerIdentity {
      purchasingCompany {
        company {
          id
        }
      }
    }
  }
  locations(names: ["Warehouse"]) {
    id
    name
  }
}