Cayan NPM | npm.io

cayan

A Javascript library for talking to the Cayan APIs

Install

yarn add cayan

npm install cayan --save

Usage

Genius APIs

Initialize the client with your merchant credentials and the hostname of your CED device.

import { GeniusClient } from "cayan";

const config = {
  MerchantName: "TEST",
  MerchantSiteId: "000000",
  MerchantKey: "00000-00000-00000-00000-00000",
  CEDHostname: "10.0.0.76"
};

const genius = await GeniusClient.createInstance(config);

Once you've initialized the Genius client, here are the operations you now have access to:

StageTransaction
CheckStatus
StartOrder
EndOrder
Cancel
AddItem
DeleteItem
DeleteAllItems
DiscountItem
UpdateItem
UpdateTotal

StageTransaction

Allows you to submit non-sensitive payment information to the payment gateway and returns a unique key (TransportKey) in the response which will be used for all subsequent steps to identify the transaction. API Docs

const transaction = {
  TransactionType: "SALE",
  ClerkId: "1",
  Dba: "Acme Inc",
  SoftwareName: "Your Project",
  SoftwareVersion: "1",
  Amount: 1.01,
  OrderNumber: "1000",
  TaxAmount: 0.1
};

const result = await genius.StageTransaction(transaction);

CheckStatus

Sends a request to the CED to check which screen the device is on. API Docs

A list of possible CurrentScreen values and their meanings can be found here

const result = await genius.CheckStatus();

// Example Return Value
{
  "Status": "Online",
  "CurrentScreen": "00",
  "ResponseMessage": "",
  "SerialNumber": "WSC00000000",
  "ApplicationVersion": "H1.0.1.68",
  "OSVersion": "7.0",
  "AdditionalParameters": {
    "PaymentDataCaptured": false,
    "RemoveEMVCard": false
  }
}

StartOrder

Initiates the line item display screen and the start of the transaction.

const result = await genius.StartOrder("ORDER-NUMBER-HERE");

// Example Return Value
{
  "Status": "Success",
  "ResponseMessage": "",
  "AdditionalParameters": {}
}

EndOrder

Completes the line item display for transactions completed outside of the Genius CED. Should only be used when payment is accepted outside of the Genius CED. For example, if a consumer pays with cash or check. API Docs

const result = await genius.EndOrder("ORDER-NUMBER-HERE", "Cash | Check | StoreCredit | Other");

// Example Return Value
{
  "Status": "Success",
  "ResponseMessage": "",
  "AdditionalParameters": {}
}

Cancel

Sends a request to the CED to cancel the current transaction API Docs

const result = await genius.Cancel();

// Example Return Value
{
  "Status": "Cancelled",
  "ResponseMessage": "",
  "AdditionalParameters": {}
}

AddItem

Adds an item to the line display screen and display updated data for tax and total amounts API Docs

const result = await genius.AddItem({
  Order: "1000",
  Type: "Sku",
  TypeValue: "xxx",
  UPC: "UPC123",
  Quantity: "1",
  Description: "Pad Prik Pow",
  Amount: "12.25",
  TaxAmount: "0",
  OrderTotal: "12.25",
  OrderTax: "0",
  Category: "None"
});

// Example Return Value
{
  "Status": "Success",
  "ResponseMessage": "",
  "ItemID": "1",
  "AdditionalParameters": {}
}

DiscountItem

Adds a discount line item to the display screen and display updated data for tax and total amounts. This will apply a negative value to the order. Note: If you delete the item associated with the discount, you must also delete the discount. API Docs

const result = await genius.DiscountItem({
  Order: "1000",
  TargetItemID: "1",
  Type: "Sku",
  TypeValue: "xxx",
  UPC: "UPC123",
  Quantity: "1",
  Description: "Pad Prik Pow",
  Amount: "2.25",
  TaxAmount: "0",
  OrderTotal: "10.00",
  OrderTax: "0",
  Category: "None"
});

// Example Return Value
{
  "Status": "Success",
  "ResponseMessage": "",
  "ItemID": "3",
  "AdditionalParameters": {}
}

DeleteItem

Deletes an item from the items list API Docs

const result = await genius.DeleteItem({
  Order: "1000",
  TargetItemID: "1",
  OrderTotal: "0",
  OrderTax: "0"
});

// Example Return Value
{
  "Status": "Success",
  "ResponseMessage": "",
  "AdditionalParameters": {}
}

DeleteAllItems

Deletes all items from the items list API Docs

const result = await genius.DeleteAllItems({
  Order: "1000",
  RetainPaymentData: CEDBoolean.False,
  OrderTotal: "0",
  OrderTax: "0"
});

// Example Return Value
{
  "Status": "Success",
  "ResponseMessage": "",
  "AdditionalParameters": {}
}

UpdateItem

Updates an existing item API Docs

const result = await genius.UpdateItem({
  Order: "1000",
  TargetItemID: "1",
  Type: "Sku",
  TypeValue: "xxx",
  UPC: "UPC123",
  Quantity: "2",
  Description: "Pad Prik Pow",
  Amount: "12.25",
  TaxAmount: "0",
  OrderTotal: "24.50",
  OrderTax: "0",
  Category: "None"
});

// Example Return Value
{
  "Status": "Success",
  "ResponseMessage": "",
  "ItemID": "4",
  "AdditionalParameters": {}
}

UpdateTotal

Updates the order totals without adding/removing items API Docs

const result = await genius.UpdateTotal({
  Order: "1000",
  OrderTotal: "20.25",
  OrderTax: "0"
});

// Example Return Value
{
  "Status": "Success",
  "ResponseMessage": "",
  "AdditionalParameters": {}
}