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* Support for Token metadata (#1403) * Function to poll decimal metadata and save it in redux Store. Notes: - So far we only fetched our backend for almost everything, so the same base url was shared in all calls. Adding a third party endpoint required to slightly refactor the fetch function to be more flexible. - Token metadata is fetched when wallet is opened and only stored in redux's Store (not in persistent storage). We may add this functionality later * Use token metadata from Store in UI, plus some fixes * UI improvements * use cdn for mainnet and minor fix * trigger token metadata update when txs are received/updated * fix: do not clear token info before fetching, plus a minor UI fix * 4.1.4 (#1405)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| // @flow | ||
| import type {Dispatch} from 'redux' | ||
|
|
||
| import walletManager from '../crypto/walletManager' | ||
| import {availableAssetsSelector, tokenBalanceSelector} from '../selectors' | ||
| import {ObjectValues} from '../utils/flow' | ||
| import {Logger} from '../utils/logging' | ||
|
|
||
| import type {State} from '../state' | ||
| import type {Token} from '../types/HistoryTransaction' | ||
| import type {MultiToken} from '../crypto/MultiToken' | ||
| import type {TokenInfoRequest, TokenInfoResponse} from '../api/types' | ||
|
|
||
| const _startFetching = () => ({ | ||
| type: 'START_FETCHING_TOKEN_INFO', | ||
| path: ['tokenInfo', 'isFetching'], | ||
| payload: null, | ||
| reducer: (_state, _isFetching) => true, | ||
| }) | ||
|
|
||
| const _endFetching = () => ({ | ||
| type: 'END_FETCHING_TOKEN_INFO', | ||
| path: ['tokenInfo', 'isFetching'], | ||
| payload: null, | ||
| reducer: (_state, _isFetching) => false, | ||
| }) | ||
|
|
||
| const _setTokenInfo = (tokenInfo) => ({ | ||
| type: 'SET_TOKEN_INFO', | ||
| path: ['tokenInfo', 'tokens'], | ||
| payload: tokenInfo, | ||
| reducer: (state, value) => value, | ||
| }) | ||
|
|
||
| const _setLastError = (error) => ({ | ||
| type: 'SET_LAST_FETCHING_ERROR', | ||
| path: ['tokenInfo', 'lastFetchingError'], | ||
| payload: error, | ||
| reducer: (state, error) => error, | ||
| }) | ||
|
|
||
| export const fetchTokenInfo = () => async ( | ||
| dispatch: Dispatch<any>, | ||
| getState: () => State, | ||
| ) => { | ||
| const state = getState() | ||
| if (state.tokenInfo.isFetching) { | ||
| return | ||
| } | ||
| dispatch(_setTokenInfo(availableAssetsSelector(state))) | ||
| dispatch(_startFetching()) | ||
| try { | ||
| const availableAssets: Dict<Token> = availableAssetsSelector(state) | ||
| const assetsBalance: MultiToken = tokenBalanceSelector(state) | ||
|
|
||
| // subject -> identifier | ||
| const subjectDict = ObjectValues(availableAssets) | ||
| .filter((asset) => { | ||
| const assetValue = assetsBalance.get(asset.identifier) | ||
| return assetValue && assetValue.gt(0) | ||
| }) | ||
| .reduce((acc, curr: Token): Dict<string> => { | ||
| if (curr.identifier === '') return acc | ||
| acc[`${curr.metadata.policyId}${curr.metadata.assetName}`] = | ||
| curr.identifier | ||
| return acc | ||
| }, ({}: Dict<string>)) | ||
| const tokenIds = Object.keys(subjectDict) | ||
| const tokenInfo: TokenInfoResponse = await walletManager.fetchTokenInfo( | ||
| ({ | ||
| tokenIds, | ||
| }: TokenInfoRequest), | ||
| ) | ||
| const tokens = {...availableAssets} | ||
| for (const key of Object.keys(tokenInfo)) { | ||
| const _token = tokens[subjectDict[key]] | ||
| const newInfo = tokenInfo[key] | ||
| if (newInfo == null) continue | ||
| tokens[subjectDict[key]] = { | ||
| ..._token, | ||
| metadata: { | ||
| ..._token.metadata, | ||
| longName: newInfo.name || null, | ||
| numberOfDecimals: newInfo.decimals || 0, | ||
| }, | ||
| } | ||
| } | ||
| Logger.info('saving token info in state....', tokens) | ||
| dispatch(_setTokenInfo(tokens)) | ||
| dispatch(_setLastError(null)) | ||
| } catch (err) { | ||
| Logger.warn('actions:tokenInfo::fetchTokenInfo', err) | ||
| dispatch(_setLastError(err)) | ||
| } finally { | ||
| dispatch(_endFetching()) | ||
| } | ||
| } |
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