import * as ethUtil from "ethereumjs-util" ; import { IChainData } from "./types" ; import supportedChains from "./chains" ; import { apiGetGasPrices , apiGetAccountNonce } from "./api" ; import { convertAmountToRawNumber , convertStringToHex } from "./bignumber" ; export function capitalize ( string ) { return string . split ( " " ) . map ( word => word . charAt ( 0 ) . toUpperCase ( ) + word . slice ( 1 ) . toLowerCase ( ) ) . join ( " " ) ; } export function ellipseText ( text = "" , maxLength = 9999 ) { if ( text . length <= maxLength ) { return text ; } const _maxLength = maxLength - 3 ; let ellipse = false ; let currentLength = 0 ; const result = text . split ( " " ) . filter ( word => { currentLength += word . length ; if ( ellipse || currentLength >= _maxLength ) { ellipse = true ; return false ; } else { return true ; } } ) . join ( " " ) + "..." ; return result ; } export function ellipseAddress ( address = "" , width = 10 ) { return `${ address . slice ( 0 , width ) }...${ address . slice ( - width ) }` ; } export function padLeft ( n , width , z ? ) { z = z || "0" ; n = n + "" ; return n . length >= width ? n : new Array ( width - n . length + 1 ) . join ( z ) + n ; } export function sanitizeHex ( hex ) { hex = hex . substring ( 0 , 2 ) === "0x" ? hex . substring ( 2 ) : hex ; if ( hex === "" ) { return "" ; } hex = hex . length % 2 !== 0 ? "0" + hex : hex ; return "0x" + hex ; } export function removeHexPrefix ( hex ) { return hex . toLowerCase ( ) . replace ( "0x" , "" ) ; } export function getDataString ( func , arrVals ) { let val = "" ; for ( let i = 0 ; i < arrVals . length ; i ++ ) { val += padLeft ( arrVals [ i ] , 64 ) ; } const data = func + val ; return data ; } export function isMobile ( ) { let mobile = false ; function hasTouchEvent ( ) { try { document . createEvent ( "TouchEvent" ) ; return true ; } catch ( e ) { return false ; } } function hasMobileUserAgent ( ) { if ( /(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|ipad|iris|kindle|Android|Silk|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino/i . test ( navigator . userAgent ) || /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw-(n|u)|c55\/|capi|ccwa|cdm-|cell|chtm|cldc|cmd-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc-s|devi|dica|dmob|do(c|p)o|ds(12|-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(-|_)|g1 u|g560|gene|gf-5|g-mo|go(.w|od)|gr(ad|un)|haie|hcit|hd-(m|p|t)|hei-|hi(pt|ta)|hp( i|ip)|hs-c|ht(c(-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i-(20|go|ma)|i230|iac( |-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|-[a-w])|libw|lynx|m1-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|-([1-8]|c))|phil|pire|pl(ay|uc)|pn-2|po(ck|rt|se)|prox|psio|pt-g|qa-a|qc(07|12|21|32|60|-[2-7]|i-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h-|oo|p-)|sdk\/|se(c(-|0|1)|47|mc|nd|ri)|sgh-|shar|sie(-|m)|sk-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h-|v-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl-|tdg-|tel(i|m)|tim-|t-mo|to(pl|sh)|ts(70|-|m3|m5)|tx-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas-|your|zeto|zte-/i . test ( navigator . userAgent . substr ( 0 , 4 ) ) ) { return true ; } else if ( hasTouchEvent ( ) ) { return true ; } return false ; } mobile = hasMobileUserAgent ( ) ; return mobile ; } export function getChainData ( chainId ) { const chainData = supportedChains . filter ( ( chain ) => chain . chain_id === chainId ) [ 0 ] ; if ( ! chainData ) { throw new Error ( "ChainId missing or not supported" ) ; } const API_KEY = process . env . REACT_APP_INFURA_ID ; if ( chainData . rpc_url . includes ( "infura.io" ) && chainData . rpc_url . includes ( "%API_KEY%" ) && API_KEY ) { const rpcUrl = chainData . rpc_url . replace ( "%API_KEY%" , API_KEY ) ; return { ... chainData , rpc_url : rpcUrl } ; } return chainData ; } export function hashPersonalMessage ( msg ) { const buffer = Buffer . from ( msg ) ; const result = ethUtil . hashPersonalMessage ( buffer ) ; const hash = ethUtil . bufferToHex ( result ) ; return hash ; } export function recoverPublicKey ( sig , hash ) { const sigParams = ethUtil . fromRpcSig ( sig ) ; const hashBuffer = Buffer . from ( hash . replace ( "0x" , "" ) , "hex" ) ; const result = ethUtil . ecrecover ( hashBuffer , sigParams . v , sigParams . r , sigParams . s ) ; const signer = ethUtil . bufferToHex ( ethUtil . publicToAddress ( result ) ) ; return signer ; } export function recoverPersonalSignature ( sig , msg ) { const hash = hashPersonalMessage ( msg ) ; const signer = recoverPublicKey ( sig , hash ) ; return signer ; } export async function formatTestTransaction ( address , chainId ) { const from = address ; const to = address ; const _nonce = await apiGetAccountNonce ( address , chainId ) ; const nonce = sanitizeHex ( convertStringToHex ( _nonce ) ) ; const gasPrices = await apiGetGasPrices ( ) ; const _gasPrice = gasPrices . slow . price ; const gasPrice = sanitizeHex ( convertStringToHex ( convertAmountToRawNumber ( _gasPrice , 9 ) ) ) ; const _gasLimit = 21000 ; const gasLimit = sanitizeHex ( convertStringToHex ( _gasLimit ) ) ; const _value = 0 ; const value = sanitizeHex ( convertStringToHex ( _value ) ) ; const data = "0x" ; const tx = { from , to , nonce , gasPrice , gasLimit , value , data } ; return tx ; } export function isObject ( obj ) { return typeof obj === "object" && ! ! Object . keys ( obj ) . length ; }