Fetch All Stakers' Addresses from a DApp (DApp Staking)

Is your feature request related to a problem? Please describe. I am working on a project where I need to fetch all addresses that are staking on a specific DApp at a given epoch. I have encountered difficulties in finding the appropriate API to retrieve this information. My current issue is that I am unable to obtain the desired output; I either receive a 'null' response or encounter an error, indicating a potential issue with my API call or a misunderstanding of the correct method to use.

Describe the solution you'd like I am looking for guidance on which API to use to get a list of all addresses that are staking on a specific DApp at a given epoch.

Describe alternatives you've considered So far, I have attempted to use api.query.dappsStaking.contractEraStake(), but this has not yielded the expected results. I am open to suggestions on alternative approaches or methods that might be more suitable for this purpose.

Additional context Here is a snippet of the code I am currently using:

const { ApiPromise } = require('@polkadot/api');
const { WsProvider } = require('@polkadot/rpc-provider');
const { options } = require('@astar-network/astar-api');

async function getStakerAddresses(dappAddress, outputFile) {
    const provider = new WsProvider('wss://shiden.api.onfinality.io/public-ws');
    const api = new ApiPromise(options({ provider }));
    await api.isReady;

    try {
        const currentEra = await api.query.dappsStaking.currentEra().catch((error) => {
            console.error('error', error);
            return null;
        });

        if (currentEra === null) return;
        const staking = await api.query.dappsStaking.contractEraStake({ Evm: dappAddress }, currentEra);
        console.log(staking)
    } catch (error) {
        console.error(error);
    } finally {
        api.disconnect();
    }
}

const dappAddress = '0x....';

getStakerAddresses(dappAddress, outputFile)
    .then(() => console.log('Complete'))
    .catch(error => console.error('Error:', error));

This code is intended to fetch the staking addresses, but it does not work as expected. Any advice on how to properly make this API call or if there is a better way to approach this would be greatly appreciated. Thank you in advance for your time and assistance.

Best regards,

AstarNetwork / astar.js

Fetch All Stakers' Addresses from a DApp (DApp Staking) #66