@bigmi/core
Version:
TypeScript library for Bitcoin apps.
95 lines • 3.56 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.getUTXOs = void 0;
const request_js_1 = require("../../errors/request.js");
const rpc_js_1 = require("../../errors/rpc.js");
const utxo_js_1 = require("../../errors/utxo.js");
const url_js_1 = require("../../utils/url.js");
const getBalance_js_1 = require("./getBalance.js");
const blockChairUTXOTransformer = (scriptHex) => (data) => ({
blockHeight: data.block_id,
scriptHex,
txId: data.transaction_hash,
value: data.value,
vout: data.index,
});
const MAX_API_LIMIT = '100,100';
const getUTXOs = async (client, { baseUrl, apiKey }, { address, minValue }) => {
async function* fetchUTXOs() {
let offset = 0;
let hasMore = true;
while (hasMore) {
const apiUrl = (0, url_js_1.urlWithParams)(`${baseUrl}/dashboards/addresses/${address}`, {
key: apiKey,
offset: `0,${offset}`,
limit: MAX_API_LIMIT,
});
const response = (await client.request({
url: apiUrl,
fetchOptions: { method: 'GET' },
}));
if (response.context?.code !== 200 && response.context?.code !== 404) {
throw new request_js_1.RpcRequestError({
url: apiUrl,
body: {
method: 'fetchUTXOs',
params: {
address,
minValue,
},
},
error: {
code: response.context.code === 429
? rpc_js_1.RpcErrorCode.ACCESS_DENIED
: rpc_js_1.RpcErrorCode.MISC_ERROR,
message: response.context.error || 'Error fetching utxos',
},
});
}
if (!response.data || response.data.utxo.length === 0) {
hasMore = false;
continue;
}
const { limit } = response.context;
const totalRows = response.data.addresses[address].unspent_output_count;
if (limit && totalRows) {
const [, utxoLimit] = String(limit)
.split(',')
.map((val) => Number(val));
hasMore = offset + utxoLimit < totalRows;
offset += utxoLimit;
}
else {
hasMore = false;
offset += 0;
}
yield response.data;
}
}
if (minValue) {
const { result: balance } = await (0, getBalance_js_1.getBalance)(client, { baseUrl, apiKey }, { address });
if (minValue > Number(balance)) {
throw new utxo_js_1.InsufficientUTXOBalanceError({
minValue,
address,
balance: Number(balance),
});
}
}
const utxos = [];
let valueCount = 0;
for await (const batch of fetchUTXOs()) {
const addressScriptHex = batch.addresses[address].script_hex;
const utxoBatch = batch.utxo.map(blockChairUTXOTransformer(addressScriptHex));
utxos.push(...utxoBatch);
if (minValue) {
valueCount += utxoBatch.reduce((sum, utxo) => sum + utxo.value, 0);
if (valueCount >= minValue) {
break;
}
}
}
return { result: utxos };
};
exports.getUTXOs = getUTXOs;
//# sourceMappingURL=getUTXOs.js.map