Valist Software License lightweight SDK

About

Valist is the Universal software deployment and monetization protocol. Valist Software License is the lightweight sdk of valist-sdk only having fewer core functionality like purchaseProduct, purchaseProductToken, checkLicense and hasLicense.

A checkLicense function:

• Prompts a human-readable message signature request from the user's wallet
• Recovers the address from the signature
• Uses that address to check the user's balance on the Software License NFT contract

A purchaseProduct function prompts the user to purchase the Software License NFT with native MATIC.

A purchaseProductToken function prompts the user to purchase the Software License NFT with the user's desired (and supported) token.

A hasLicense function that checks whether a given address has license to a given product ID.

Learn more about Valist.

Installing the package

Install the package using npm or yarn as desired to get started.

npm install --save valist-software-license

OR

yarn add valist-software-license

Documentation

For the TypeScript API documentation, please see the following link:

• TypeScript API Docs

Usage

Creating License client

import { create } from "valist-software-license"
import ethers from "ethers"

const provider = new ethers.providers.Web3Provider(window.ethereum);
const client = create(provider, {chainId: 80001})

// Or with wagmi
import { create, Signer } from "valist-software-license"
import { useSigner } from "wagmi"

const { data:signer } = useSigner();
const client = create(signer as Signer, {chainId: 80001})

// Or with ethers wallet
import { create, Provider } from "valist-software-license"
import { Wallet } from "ethers"

const provider = new ethers.providers.JsonRpcProvider('https://rpc.ankr.com/polygon_mumbai');
const wallet = Wallet.createRandom().connect(provider);
const client = create(wallet, {chainId: 80001})

Purchase Product License using MATIC

// Valist Product ID
const productId = "0x62540d928401ecc8386fe86066a1d1f580e60737f0d87444ba7558786dc2e905";
// desired recipient address for license
const recipient = "0xFf57433E786C00e0df38bA17a9724EC78C3F6f5B";

const tx = await client.purchaseProduct(productId, recipient);
// Wait for the transaction to be mined...
await tx.wait();

Purchase Product License using ERC20 tokens

// Valist Product ID
const productId = "0x62540d928401ecc8386fe86066a1d1f580e60737f0d87444ba7558786dc2e905";
// desired recipient address for license
const recipient = "0xFf57433E786C00e0df38bA17a9724EC78C3F6f5B";
// chainlink token address
const tokenAddress = "0x326C977E6efc84E512bB9C30f76E30c160eD06FB";

const tx = await client.purchaseProductToken(tokenAddress, productId, recipient);
// Wait for the transaction to be mined...
await tx.wait();

Check license by signing message

// Valist Product ID
const productId = "0x62540d928401ecc8386fe86066a1d1f580e60737f0d87444ba7558786dc2e905";
const address = "0xFf57433E786C00e0df38bA17a9724EC78C3F6f5B":
const nonce = client.generateNonce()
// This is the default signing message if custom signing message is not provided
const signingMessage = `Authenticate your wallet with address: ${address}\nNonce: ${nonce}`;
const { hasLicense } = await client.checkLicense(productId, signingMessage);
console.log(hasLicense); // True or False

Check license of address

const productId = "0x62540d928401ecc8386fe86066a1d1f580e60737f0d87444ba7558786dc2e905";
const address = "0xFf57433E786C00e0df38bA17a9724EC78C3F6f5B";

const hasLicense = await client.hasLicense(productId, address);
console.log(hasLicense); // True or False

Development

Building

yarn build

Linting

yarn fix

Testing

yarn test

Generating and publishing html docs to GitHub pages

yarn doc:html
yarn doc:publish

Publishing npm package

npm publish

Author

👤 Pawan Paudel

• Github: @pawanpaudel93

🤝 Contributing

Contributions, issues and feature requests are welcome!Feel free to check issues page.

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Copyright © 2022 Pawan Paudel.