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author | Chi Kei Chan <chikeichan@gmail.com> | 2019-03-22 07:03:30 +0800 |
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committer | Dan J Miller <danjm.com@gmail.com> | 2019-03-22 07:03:30 +0800 |
commit | 31175625b446cb5d18b17db23018bca8b14d280c (patch) | |
tree | f54e159883deef003fb281267025edf796eb8004 /ui/app/token-util.js | |
parent | 7287133e15fab22299e07704206e85bc855d1064 (diff) | |
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Folder restructure (#6304)
* Remove ui/app/keychains/
* Remove ui/app/img/ (unused images)
* Move conversion-util to helpers/utils/
* Move token-util to helpers/utils/
* Move /helpers/*.js inside /helpers/utils/
* Move util tests inside /helpers/utils/
* Renameand move confirm-transaction/util.js to helpers/utils/
* Move higher-order-components to helpers/higher-order-components/
* Move infura-conversion.json to helpers/constants/
* Move all utility functions to helpers/utils/
* Move pages directory to top-level
* Move all constants to helpers/constants/
* Move metametrics inside helpers/
* Move app and root inside pages/
* Move routes inside helpers/
* Re-organize ducks/
* Move reducers to ducks/
* Move selectors inside selectors/
* Move test out of test folder
* Move action, reducer, store inside store/
* Move ui components inside ui/
* Move UI components inside ui/
* Move connected components inside components/app/
* Move i18n-helper inside helpers/
* Fix unit tests
* Fix unit test
* Move pages components
* Rename routes component
* Move reducers to ducks/index
* Fix bad path in unit test
Diffstat (limited to 'ui/app/token-util.js')
-rw-r--r-- | ui/app/token-util.js | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/ui/app/token-util.js b/ui/app/token-util.js deleted file mode 100644 index 35a19a69f..000000000 --- a/ui/app/token-util.js +++ /dev/null @@ -1,118 +0,0 @@ -const log = require('loglevel') -const util = require('./util') -const BigNumber = require('bignumber.js') -import contractMap from 'eth-contract-metadata' - -const casedContractMap = Object.keys(contractMap).reduce((acc, base) => { - return { - ...acc, - [base.toLowerCase()]: contractMap[base], - } -}, {}) - -const DEFAULT_SYMBOL = '' -const DEFAULT_DECIMALS = '0' - -async function getSymbolFromContract (tokenAddress) { - const token = util.getContractAtAddress(tokenAddress) - - try { - const result = await token.symbol() - return result[0] - } catch (error) { - log.warn(`symbol() call for token at address ${tokenAddress} resulted in error:`, error) - } -} - -async function getDecimalsFromContract (tokenAddress) { - const token = util.getContractAtAddress(tokenAddress) - - try { - const result = await token.decimals() - const decimalsBN = result[0] - return decimalsBN && decimalsBN.toString() - } catch (error) { - log.warn(`decimals() call for token at address ${tokenAddress} resulted in error:`, error) - } -} - -function getContractMetadata (tokenAddress) { - return tokenAddress && casedContractMap[tokenAddress.toLowerCase()] -} - -async function getSymbol (tokenAddress) { - let symbol = await getSymbolFromContract(tokenAddress) - - if (!symbol) { - const contractMetadataInfo = getContractMetadata(tokenAddress) - - if (contractMetadataInfo) { - symbol = contractMetadataInfo.symbol - } - } - - return symbol -} - -async function getDecimals (tokenAddress) { - let decimals = await getDecimalsFromContract(tokenAddress) - - if (!decimals || decimals === '0') { - const contractMetadataInfo = getContractMetadata(tokenAddress) - - if (contractMetadataInfo) { - decimals = contractMetadataInfo.decimals - } - } - - return decimals -} - -export async function getSymbolAndDecimals (tokenAddress, existingTokens = []) { - const existingToken = existingTokens.find(({ address }) => tokenAddress === address) - - if (existingToken) { - return { - symbol: existingToken.symbol, - decimals: existingToken.decimals, - } - } - - let symbol, decimals - - try { - symbol = await getSymbol(tokenAddress) - decimals = await getDecimals(tokenAddress) - } catch (error) { - log.warn(`symbol() and decimal() calls for token at address ${tokenAddress} resulted in error:`, error) - } - - return { - symbol: symbol || DEFAULT_SYMBOL, - decimals: decimals || DEFAULT_DECIMALS, - } -} - -export function tokenInfoGetter () { - const tokens = {} - - return async (address) => { - if (tokens[address]) { - return tokens[address] - } - - tokens[address] = await getSymbolAndDecimals(address) - - return tokens[address] - } -} - -export function calcTokenAmount (value, decimals) { - const multiplier = Math.pow(10, Number(decimals || 0)) - return new BigNumber(String(value)).div(multiplier) -} - -export function getTokenValue (tokenParams = []) { - const valueData = tokenParams.find(param => param.name === '_value') - return valueData && valueData.value -} |