In some cases, you may need to pay some fees to a Blocklet, follow this article to learn how to request payment with DID Connect.
The basic process is consistent with the "Quick Start" chapter, change the code in the handler as follows:
/* eslint-disable no-console */
const { fromTokenToUnit } = require('@ocap/util');
const { fromAddress } = require('@ocap/wallet');
const { wallet, client } = require('../../libs/auth');
const { getTokenInfo, pickGasPayerHeaders } = require('../../libs/utils');
const env = require('../../libs/env');
const logger = require('../../libs/logger');
const action = 'request-payment';
module.exports = {
action,
onConnect() {
return {
signature: async ({ userDid, userPk }) => {
const amount = 1;
const token = await getTokenInfo();
return {
type: 'TransferV2Tx',
data: {
from: userDid,
pk: userPk,
itx: {
to: wallet.address,
tokens: [
{
address: env.localTokenId,
value: fromTokenToUnit(amount, token.decimal).toString(),
},
],
},
},
description: `Please pay ${amount} ${token.symbol} to application`,
};
},
};
},
onAuth: async ({ req, claims, userDid, updateSession }) => {
try {
const claim = claims.find((x) => x.type === 'signature');
const tx = client.decodeTx(claim.origin);
const user = fromAddress(userDid);
if (claim.from) {
tx.from = claim.from;
}
if (claim.delegator) {
tx.delegator = claim.delegator;
}
const hash = await client.sendTransferV2Tx(
{
tx,
wallet: user,
signature: claim.sig,
},
pickGasPayerHeaders(req),
);
logger.info(`${action}.onAuth`, { claims, userDid, hash });
updateSession({
result: {
hash,
tx,
origin: claim.origin,
sig: claim.sig,
},
});
return { hash, tx: claim.origin };
} catch (err) {
logger.info(`${action}.onAuth.error`, err);
throw new Error('Send token failed!');
}
},
};You can find token.address in here https://explorer.abtnetwork.io/explorer/tokens
Change the front-end part calling the DID Connect code to the following:
connectApi.open({
locale: 'en',
action: 'request-payment',
onSuccess({ result }) {
// payment data will be in result
},
messages: {
title: 'Request Payment',
scan: 'Please sign the transaction to continue',
},
});