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Knot Station and Vehicles as a Service (SVaaS) Software Development Kit (SDK)

This SDK allows you to use our service allowing you to control stations and vehicles.

More info on the service on our Documentation

README is a Work in progress

Installation

This project is written in TypeScript using Node.js 12 and targeting es2017. It MAY work for older versions of Node.js.

Install using npm:

npm install @knotcity/svaas-sdk

Usage

Import the module in the same way as you do normally.

// JavaScript
const svaas = require('@knotcity/svaas-sdk');
// TypeScript
import svaas = require('@knotcity/svaas-sdk');

Creating a client

Before making request you need to create a new KnotSVaaS object with your keys.

// Fetch your info
const yourKeyId = "...";
// Watch out for line breaks (should be `\n` and not `\\n`)
const yourPrivateKey = "...";
// The knot's public key is available on our [documentation](https://doc.knotcity.io/services/http-signature/#3-verify-signature)
// It's used if you want to verify the request we make to your API/Webhooks
const knotPublicKey = "...";

export const SVaaS = new svaas.KnotSVaaS({
    keyId: yourKeyId,
    privateKey: yourPrivateKey,
    knotPublicKey: knotPublicKey,
    vehiclesEndpoint: '...', // Optionally you can set a custom endpoint for the vehicles API (like if you are on our test environment)
    stationsEndpoint: '...' // Optionally you can set a custom endpoint for the stations API (like if you are on our test environment)
});

Calling an action

To call a specific action, use the client you just created and call the function you need.

try
{
    const resp = await SVaaS.unlockVehicle(vehicleId, unlockId);
    resp.code; // Response code, 0 most of the time, which means success but it can be something else to inform other actions to take
    resp.message; // A descriptive message associated with the code
    resp.data; // Data requested, if any
}
catch(err)
{
    // Something went wrong
}

Verifying a request made to your API/Webhook from us

To be sure that a request to your API comes from us, you can verify its signature with the following function. req is an Express request object

try
{
    const valid = SaaS.checkKnotRequestSignature({ headers: req.headers, httpMethod: req.method, path: req.originalUrl });
}
catch(err)
{
    // Something failed
}

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