Differential D11818 Diff 34573 web/cashtab/src/utils/chronik.js

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web/cashtab/src/utils/chronik.js

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				// Chronik methods

				export const getUtxosSingleHashChronik = async (chronik, hash160) => {
				// Get utxos at a single address, which chronik takes in as a hash160
				let utxos;
				try {
				utxos = await chronik.script('p2pkh', hash160).utxos();
				if (utxos.length === 0) {
				// Chronik returns an empty array if there are no utxos at this hash160
				return [];
				}
				/* Chronik returns an array of with a single object if there are utxos at this hash 160
				[
				{
				outputScript: <hash160>,
				utxos:[{utxo}, {utxo}, ..., {utxo}]
				}
				]
				*/

				// Return only the array of utxos at this address
				return utxos[0].utxos;
				} catch (err) {
				console.log(`Error in chronik.utxos(${hash160})`);
				console.log(err);
				}
				};

				export const returnGetUtxosChronikPromise = (chronik, hash160AndAddressObj) => {
				/*
				Chronik thinks in hash160s, but people and wallets think in addresses
				Add the address to each utxo
				*/
				return new Promise((resolve, reject) => {
				getUtxosSingleHashChronik(chronik, hash160AndAddressObj.hash160).then(
				result => {
				for (let i = 0; i < result.length; i += 1) {
				const thisUtxo = result[i];
				thisUtxo.address = hash160AndAddressObj.address;
				}
				resolve(result);
				},
				err => {
				reject(err);
				},
				);
				});
				};

				export const getUtxosChronik = async (chronik, hash160sMappedToAddresses) => {
				/*
				Chronik only accepts utxo requests for one address at a time
				Construct an array of promises for each address
				Note: Chronik requires the hash160 of an address for this request
				*/
				const chronikUtxoPromises = [];
				for (let i = 0; i < hash160sMappedToAddresses.length; i += 1) {
				const thisPromise = returnGetUtxosChronikPromise(
				chronik,
				hash160sMappedToAddresses[i],
				);
				chronikUtxoPromises.push(thisPromise);
				}
				const allUtxos = await Promise.all(chronikUtxoPromises);
				// Since each individual utxo has address information, no need to keep them in distinct arrays
				// Combine into one array of all utxos
				const flatUtxos = allUtxos.flat();
				return flatUtxos;
				};