@cityofzion/neon-api
Version:
Neon-API module: High level API for neon-js
44 lines • 1.81 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.getTokenInfos = getTokenInfos;
const neon_core_1 = require("@cityofzion/neon-core");
const CHUNK_SIZE = 3;
async function getTokenInfos(contracts, client) {
const script = contracts
.map((scriptHash) => scriptHash instanceof neon_core_1.sc.Nep17Contract
? scriptHash
: new neon_core_1.sc.Nep17Contract(scriptHash))
.map((contract) => [
contract.symbol(),
contract.decimals(),
contract.totalSupply(),
])
.reduce((sb, contractCalls) => {
contractCalls.forEach((cc) => sb.emitContractCall(cc));
return sb;
}, new neon_core_1.sc.ScriptBuilder())
.build();
const response = await client.invokeScript(neon_core_1.u.HexString.fromHex(script));
if (response.state === "FAULT") {
throw new Error(response.exception
? `Invoke exception: ${response.exception}}`
: "No exception message returned.");
}
const expectedStackLength = contracts.length * CHUNK_SIZE;
if (response.stack.length !== expectedStackLength) {
throw new Error(`Received unexpected results. Expected ${expectedStackLength} but got ${response.stack.length} instead.`);
}
const results = [];
for (let i = 0; i < response.stack.length; i += CHUNK_SIZE) {
results.push(response.stack.slice(i, i + CHUNK_SIZE));
}
return results.map((result) => {
const decimals = parseInt(result[1].value);
return {
symbol: neon_core_1.u.HexString.fromBase64(result[0].value).toAscii(),
decimals,
totalSupply: neon_core_1.u.BigInteger.fromNumber(result[2].value).toDecimal(decimals),
};
});
}
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