bumi
41a04d6b53
This now uses the multihashes dependency (which is an ipfs dependency) to decode/encode the ipfs hashes.
38 lines
974 B
JavaScript
38 lines
974 B
JavaScript
import Kredits from '../kredits';
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import multihashes from 'npm:multihashes';
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export default class Base {
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constructor(contract) {
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this.contract = contract;
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}
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get functions() {
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return this.contract.functions;
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}
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// TODO: move into utils
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fetchAndMergeIpfsData(data, Serializer) {
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if (!data.hashSize || data.hashSize === 0) {
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return data;
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}
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let digest = Kredits.ipfs.Buffer.from(data.ipfsHash.slice(2), 'hex');
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let ipfsHash = multihashes.encode(digest, data.hashFunction, data.hashSize);
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return Kredits.ipfs
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.cat(ipfsHash)
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.then(Serializer.deserialize)
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.then((attributes) => {
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return Object.assign({}, data, attributes);
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});
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}
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decodeIpfsHash(ipfsHash) {
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let multihash = multihashes.decode(multihashes.fromB58String(ipfsHash));
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return {
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ipfsHash: '0x' + multihashes.toHexString(multihash.digest),
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hashSize: multihash.length,
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hashFunction: multihash.code
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};
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}
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}
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