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feat: add ObservableWallet.handles$ that emits own handles
- PersonalWallet has a new optional prop in the constructor: handlePolicyIds - Add some handle-related data to mockProviders in `util-dev`, update affected tests
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| import { Assets, HandleInfo } from '../types'; | ||
| import { Cardano } from '@cardano-sdk/core'; | ||
| import { | ||
| EMPTY, | ||
| Observable, | ||
| combineLatest, | ||
| distinctUntilChanged, | ||
| map, | ||
| mergeMap, | ||
| of, | ||
| shareReplay, | ||
| withLatestFrom | ||
| } from 'rxjs'; | ||
| import { Logger } from 'ts-log'; | ||
| import { deepEquals, isNotNil } from '@cardano-sdk/util'; | ||
| import { sameArrayItems, strictEquals } from './util'; | ||
| import uniqBy from 'lodash/uniqBy'; | ||
|
|
||
| export interface HandlesTrackerProps { | ||
| utxo$: Observable<Cardano.Utxo[]>; | ||
| assetInfo$: Observable<Assets>; | ||
| tip$: Observable<Cardano.Tip>; | ||
| handlePolicyIds: Cardano.PolicyId[]; | ||
| logger: Logger; | ||
| } | ||
|
|
||
| const handleInfoEquals = (a: HandleInfo, b: HandleInfo) => | ||
| a.assetId === b.assetId && | ||
| a.resolvedAt.hash === b.resolvedAt.hash && | ||
| deepEquals(a.tokenMetadata, b.tokenMetadata) && | ||
| deepEquals(a.nftMetadata, b.nftMetadata); | ||
|
|
||
| export const createHandlesTracker = ({ tip$, assetInfo$, handlePolicyIds, logger, utxo$ }: HandlesTrackerProps) => | ||
| combineLatest([ | ||
| utxo$.pipe( | ||
| map((utxo) => | ||
| utxo.flatMap(([_, txOut]) => | ||
| uniqBy( | ||
| [...(txOut.value.assets?.keys() || [])] | ||
| .filter((assetId) => handlePolicyIds.some((policyId) => assetId.startsWith(policyId))) | ||
| .map((assetId) => ({ | ||
| handleAssetId: assetId, | ||
| txOut | ||
| })), | ||
| ({ handleAssetId }) => handleAssetId | ||
| ) | ||
| ) | ||
| ), | ||
| distinctUntilChanged((a, b) => sameArrayItems(a, b, strictEquals)), | ||
| withLatestFrom(tip$) | ||
| ), | ||
| assetInfo$ | ||
| ]).pipe( | ||
| mergeMap(([[utxo, tip], assets]) => { | ||
| const handlesWithAssetInfo = utxo | ||
| .map(({ handleAssetId, txOut }): HandleInfo | null => { | ||
| const assetInfo = assets.get(handleAssetId); | ||
| if (!assetInfo) { | ||
| logger.debug(`Asset info not (yet?) found for ${handleAssetId}`); | ||
| return null; | ||
| } | ||
| return { | ||
| ...assetInfo, | ||
| handle: Buffer.from(Cardano.AssetId.getAssetName(handleAssetId), 'hex').toString('utf8'), | ||
| hasDatum: !!txOut.datum, | ||
| resolvedAddresses: { | ||
| cardano: txOut.address | ||
| }, | ||
| resolvedAt: tip | ||
| }; | ||
| }) | ||
| .filter(isNotNil); | ||
| if (utxo.length > 0 && handlesWithAssetInfo.length === 0) { | ||
| // AssetInfo is still resolving | ||
| return EMPTY; | ||
| } | ||
| return of( | ||
| handlesWithAssetInfo.filter(({ handle, supply }) => { | ||
| if (supply > 1n) { | ||
| logger.warn(`Omitting handle with supply >1: ${handle}`); | ||
| return false; | ||
| } | ||
| return true; | ||
| }) | ||
| ); | ||
| }), | ||
| distinctUntilChanged((a, b) => sameArrayItems(a, b, handleInfoEquals)), | ||
| shareReplay({ bufferSize: 1, refCount: true }) | ||
| ); |
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