diff options
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 6e4992763..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).toNumber() -} - -export function getTokenValue (tokenParams = []) { - const valueData = tokenParams.find(param => param.name === '_value') - return valueData && valueData.value -} |