forked from hicommonwealth/edgeware-supply
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathindex.js
executable file
·59 lines (53 loc) · 2 KB
/
index.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
#!/usr/bin/env node
const { ApiPromise, WsProvider } = require('@polkadot/api');
const { bnToBn } = require('@polkadot/util/bn');
const { stringToU8a } = require('@polkadot/util');
const { u128 } = require('@polkadot/types');
const { spec } = require('@edgeware/node-types');
module.exports = async (req, res) => {
const nodeUrl = 'wss://mainnet.edgewa.re';
console.log(`Connecting to API for ${nodeUrl}...`);
let connected;
setTimeout(() => {
if (connected) return;
res.setHeader('content-type', 'text/plain');
res.status(500).send('Connection timed out');
process.exit(1);
}, 2000);
// initialize the api
const api = await ApiPromise.create({
provider: new WsProvider(nodeUrl),
...spec,
});
connected = true;
console.log('Connected!');
const TREASURY_ACCOUNT = stringToU8a('modlpy/trsry'.padEnd(32, '\0'));
//
// get relevant chain data
//
try {
const [issuance, treasury, properties, block] = await Promise.all([
api.query.balances.totalIssuance(),
api.derive.balances.account(TREASURY_ACCOUNT),
api.rpc.system.properties(),
]);
const tokenDecimals = properties.tokenDecimals.unwrap()[0].toString(10);
const issuanceStr = issuance.div(bnToBn(10).pow(bnToBn(tokenDecimals))).toString(10);
const treasuryStr = treasury.freeBalance.div(bnToBn(10).pow(bnToBn(tokenDecimals))).toString(10);
const circulatingStr = issuance.sub(treasury.freeBalance).div(bnToBn(10).pow(bnToBn(tokenDecimals))).toString(10);
res.setHeader('content-type', 'text/plain');
console.log('Issuance:', issuanceStr);
console.log('Treasury:', treasuryStr);
console.log('Circulating:', circulatingStr);
if (!!req.query.circulating) {
res.status(200).send(circulatingStr);
} else if (!!req.query.treasury) {
res.status(200).send(treasuryStr);
} else {
res.status(200).send(issuanceStr);
}
} catch (e) {
res.setHeader('content-type', 'text/plain');
res.status(500).send('Error fetching Edgeware supply data');
}
}