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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,6 @@ | ||
| --- | ||
| "@fuel-wallet/types": minor | ||
| "fuels-wallet": minor | ||
| --- | ||
|
|
||
| added SRC20 custom assets name, symbol and decimal resolve from indexer |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,119 @@ | ||
| import type { AssetData } from '@fuel-wallet/types'; | ||
| import type { Asset, Provider } from 'fuels'; | ||
| import { db } from '~/systems/Core/utils/database'; | ||
| import { isNft } from '../utils/isNft'; | ||
|
|
||
| type Endpoint = { | ||
| chainId: number; | ||
| url: string; | ||
| }; | ||
|
|
||
| export class AssetsCache { | ||
| private cache: { [chainId: number]: { [assetId: string]: Asset } }; | ||
| private static instance: AssetsCache; | ||
| private endpoints: Endpoint[] = [ | ||
| { | ||
| chainId: 9889, | ||
| url: 'https://explorer-indexer-mainnet.fuel.network', | ||
| }, | ||
| { | ||
| chainId: 0, | ||
| url: 'https://explorer-indexer-testnet.fuel.network', | ||
| }, | ||
| ]; | ||
| private storage: IndexedAssetsDB; | ||
|
|
||
| private constructor() { | ||
| this.cache = {}; | ||
| this.storage = new IndexedAssetsDB(); | ||
| } | ||
|
|
||
| private getIndexerEndpoint(chainId: number) { | ||
| return this.endpoints.find( | ||
| (endpoint: Endpoint) => endpoint.chainId === chainId | ||
| ); | ||
| } | ||
|
|
||
| private async fetchAssetFromIndexer(url: string, assetId: string) { | ||
| try { | ||
| const timeout = new Promise<null>((_, reject) => | ||
| setTimeout(() => reject(new Error('Timeout')), 2000) | ||
| ); | ||
| // limit on 2000ms request time | ||
| const response = await Promise.race([ | ||
| fetch(`${url}/assets/${assetId}`), | ||
| timeout, | ||
| ]); | ||
| if (response instanceof Response) { | ||
| return response.json(); | ||
| } | ||
| } catch (_e: unknown) {} | ||
| } | ||
|
|
||
| async getAsset({ | ||
| chainId, | ||
| assetId, | ||
| provider, | ||
| }: { chainId: number; assetId: string; provider: Provider }) { | ||
| if (chainId == null || !assetId) { | ||
| return; | ||
| } | ||
| const endpoint = this.getIndexerEndpoint(chainId); | ||
| if (!endpoint) return; | ||
| // try to get from memory cache first | ||
| this.cache[endpoint.chainId] = this.cache[endpoint.chainId] || {}; | ||
| if (this.cache[endpoint.chainId][assetId]) { | ||
| return this.cache[endpoint.chainId][assetId]; | ||
| } | ||
| // get from indexed db if not in memory | ||
| const savedAsset = await this.storage.getItem( | ||
| `${endpoint.chainId}/${assetId}` | ||
| ); | ||
| if (savedAsset) { | ||
| this.cache[endpoint.chainId][assetId] = savedAsset; | ||
| return savedAsset; | ||
| } | ||
| const assetFromIndexer = await this.fetchAssetFromIndexer( | ||
| endpoint.url, | ||
| assetId | ||
| ); | ||
| if (!assetFromIndexer) return; | ||
|
|
||
| const isNftAsset = await isNft({ | ||
| assetId, | ||
| contractId: assetFromIndexer.contractId, | ||
| provider, | ||
| }); | ||
|
|
||
| const asset = { | ||
| ...assetFromIndexer, | ||
| isNft: isNftAsset, | ||
| }; | ||
|
|
||
| this.cache[endpoint.chainId][assetId] = asset; | ||
| this.storage.setItem(`${endpoint.chainId}/${assetId}`, asset); | ||
| return asset; | ||
| } | ||
|
|
||
| static getInstance() { | ||
| if (!AssetsCache.instance) { | ||
| AssetsCache.instance = new AssetsCache(); | ||
| } | ||
| return AssetsCache.instance; | ||
| } | ||
| } | ||
|
|
||
| class IndexedAssetsDB { | ||
| async getItem(key: string) { | ||
| return db.transaction('r', db.indexedAssets, async () => { | ||
| const asset = await db.indexedAssets.get({ key }); | ||
| return asset; | ||
| }); | ||
| } | ||
|
|
||
| async setItem(key: string, data: AssetData) { | ||
| await db.transaction('rw', db.indexedAssets, async () => { | ||
| await db.indexedAssets.put({ key, ...data }); | ||
| }); | ||
| } | ||
| } |
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