@spheron/desub-js
v2.6.8
Published
Typescript library for working with the decentralised subscription contracts in Spheron
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🧰 Desub Js is the ultimate solution for working with the Decentralized Subscription Contracts. Powered by Spheron.
Desub.JS
Typescript Lib for working with the Spheron Decentralized Subscription Contracts.
About Spheron
Spheron is a marketplace to access all your web3 infrasructures.
Getting Started
A simple guide for using the desub package to interacts with your contract. The smart contract can be found here. If you make any significant change to the contracts, then you'll have to make some some changes to the package and copy the ABIs to the constants/subscription.ts file. Contracts can be deployed on any EVM chain with support for solidity. If you are adopting the spheron contract without significant change, you can proceed to follow this quick guide.
Note: ethers is a peer dependency of this library, so it is mandatory to install ethers separately along with the @spheron/desub-js
library.
Installation
Using NPM
npm install @spheron/desub-js ethers
Using Yarn
yarn add @spheron/desub-js ethers
Usage
How to use desub-js functions
To use the desub-js functions, you will need to follow the steps outlined below:
Using the getUserTokenBalance function
- Import the required packages:
import * as paymentSmartContract from "@spheron/desub-js";
import { Wallet } from "@ethersproject/wallet";
- Provide the necessary input parameters to the function:
subContractData
: an object withpaymentContractAddress
,dataContractAddress
,tokenAddress
, andtokenPrecision
properties.tokenAddress
: the address of the token contract.tokenPrecision
: the number of decimals the token has.walletAddress
: the address of the wallet to check the balance for.
- Set the HTTP provider URL:
const httpProvider = "<insert provider URL>";
This URL should point to a node that can communicate with the EVM chain.
- Connect to the wallet using a signer:
const signer = Wallet.fromMnemonic("<Inser wallet mnemonic>").connect(httpProvider);
This step requires a mnemonic phrase that corresponds to the wallet being used.
- Create an instance of the Vendor class:
const vendor = new paymentSmartContract.Vendor(httpProvider, signer);
This class is used to interact with the payment contract.
- Create an instance of the Subscription class:
const subscription = new paymentSmartContract.Subscription(vendor);
This class is used to interact with the data contract.
- Call the
subscriptionAt
method to set the subscription data:
await subscription.subscriptionAt(paymentContractAddress, dataContractAddress, tokenAddress, tokenPrecision);
- Finally, call the
getUserTokenBalance
method on thesubscription
object, passing in thewalletAddress
parameter. This method retrieves the available balance of the user's token in the payment smart contract. The available balance is then returned by the function.
const availableBalance = await subscription.getUserTokenBalance(walletAddress);
Following these steps will allow you to use the getUserTokenBalance
function in desub-js.
Build desub-js
If you would like to build the Desub.JS package locally, follow the steps below. Please note that our current latest stable branch is Master. After cloning, make sure you are on the Master branch.
Clone the Desub.JS code into your local repository by using
git clone https://github.com/spheronFdn/desub-js.git
.Install packages using either yarn or npm from the root folder. You can use
yarn
ornpm install
.Run
yarn build
ornpm run build
.
Run desub-js tests
If you would like to test the Desub.JS package, follow the steps below. Please note that you need to have all the necessary values in the .env
file before running tests. You can ping us on Discord, and we will be happy to share our .env
file with you.
- Clone the Desub.JS code into your local repository by using
git clone https://github.com/spheronFdn/desub-js.git
. - Install packages using either yarn or npm from the root folder. You can use
yarn
ornpm install
. - Make sure you add all the values in the
.env
file before running tests. - Run
yarn test
ornpm test
.
A sample .env
file would look like:
COINMARKETCAP_KEY="COINMARKET_CAP_API_KEY"
BICONOMY_KEY="BICONOMY_API_KEY"
MNEMONIC_TEST="MNEMONIC_FOR_ACCOUNT"
RPC_ENDPOINT="JSON_RPC_ENDPOINT_FOR_ETHEREUM_NETWORK"
Note: you can ping us on discord and we will be happy to share our .env file with you
Contribution
We encourage you to read the contribution guidelines to learn about our development process and how to propose bug fixes and improvements before submitting a pull request.
The Spheron community extends beyond issues and pull requests! You can support Spheron in many other ways as well.
Community
For help, discussions or any other queries: Join us on Discord