openethereum/js/packages/dapp-tokenreg/utils.js
Jaco Greeff 49fdd23d58 Ui 2 move to packages/* (#6113)
* Move secureApi to shell

* Extract isTestnet test

* Use mobx + subscriptions for status

* Re-add status indicator

* Add lerna

* Move intial packages to js/packages

* Move 3rdparty/{email,sms}-verification to correct location

* Move package.json & README to library src

* Move tests for library packages

* Move views & dapps to packages

* Move i18n to root

* Move shell to actual src (main app)

* Remove ~ references

* Change ~ to root (explicit imports)

* Finalise convert of ~

* Move views into dapps as well

* Move dapps to packages/

* Fix references

* Update css

* Update test spec locations

* Update tests

* Case fix

* Skip flakey tests

* Update enzyme

* Skip previously ignored tests

* Allow empty api for hw

* Re-add theme for embed
2017-07-21 15:46:53 +02:00

77 lines
2.2 KiB
JavaScript

// Copyright 2015-2017 Parity Technologies (UK) Ltd.
// This file is part of Parity.
// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
import { api } from './parity';
import { eip20 as eip20Abi } from '@parity/shared/contracts/abi';
export const INVALID_URL_HASH = '0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470';
export const ZERO_ADDRESS = '0x0000000000000000000000000000000000000000';
/**
* Convert the given URL to a content hash,
* and checks if it is already registered in GHH
*/
export const urlToHash = (ghhInstance, url) => {
if (!url || !url.length) {
return Promise.resolve(null);
}
return api.parity
.hashContent(url)
.catch((error) => {
const message = error.text || error.message || error.toString();
throw new Error(`${message} (${url})`);
})
.then((contentHash) => {
console.log('lookupHash', url, contentHash);
if (contentHash === INVALID_URL_HASH) {
throw new Error(`"${url}" is not a valid URL`);
}
return ghhInstance.entries
.call({}, [contentHash])
.then(([accountSlashRepo, commit, contentHashOwner]) => {
const registered = (contentHashOwner !== ZERO_ADDRESS);
return {
hash: contentHash,
registered
};
});
});
};
export const getTokenTotalSupply = (tokenAddress) => {
return api
.eth
.getCode(tokenAddress)
.then(code => {
if (!code || /^(0x)?0?$/.test(code)) {
return null;
}
const contract = api.newContract(eip20Abi, tokenAddress);
return contract
.instance
.totalSupply
.call({}, []);
});
};