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arnaucode
2018-08-06 22:45:37 +02:00
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*.sol linguist-language=Solidity

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# reciproka
Decentralized mutual credit system based on Ethereum smart contracts.
**For the moment this is an implementation of a Proof of Concept.**
## Components
- Smart contracts
- Ethereum Solidity
- Frontend wallet app
- Reactjs
- Reputation Authority
- Go lang
## Documentation
Each user connects to `reciproka` throught the frontend wallet app. Once the app is opened, it creates a new ethereum private key (if the user already have one, loads it).
### Transaction action:
- Step 0: Initial scenario
- Balances
- u1: 0
- u2: 0
- Step 1: u1 sends 10 credits to u2
- Balances
- u1: -10
- u2: 10
### Account
Account data structure:
```solidity
struct Account {
address ID;
int64 Balance;
bytes32[] History;
}
```
### Reputation Authority
Handles a public list of accounts that have been verified, in order to give some kind of trusted certification to an user's account.
Can be runned by a collective, so for example, a group of people that work together in a project, can run a Reputation Authority, that will 'validate' trusted user's accounts.

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pragma solidity ^0.4.23;
contract Accounts {
mapping(address => Account) accounts;
struct Account {
address ID;
int64 Balance;
bytes32[] History;
}
event BalanceUpdated(address sender, address receiver, int64 value);
function updateBalance(address _receiver, int64 _value) public {
// get Account of _sender
// check if balance of _sender is under the limit
// substract _value from _sender account
accounts[msg.sender].Balance = accounts[msg.sender].Balance - _value;
// add _value to _receiver account
accounts[_receiver].Balance = accounts[_receiver].Balance + _value;
// add transaction to history of sender and receiver accounts
// emit BalanceUpdated
emit BalanceUpdated(msg.sender, _receiver, _value);
}
function getBalance(address _address) public view returns (int64) {
return accounts[_address].Balance;
}
}

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# See https://help.github.com/ignore-files/ for more about ignoring files.
# dependencies
/node_modules
# testing
/coverage
# production
/build
# misc
.DS_Store
.env.local
.env.development.local
.env.test.local
.env.production.local
npm-debug.log*
yarn-debug.log*
yarn-error.log*

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{
"name": "wallet",
"version": "0.1.0",
"private": true,
"dependencies": {
"oce-components": "git+https://github.com/opencooperativeecosystem/kit.git",
"react": "^16.4.2",
"react-dom": "^16.4.2",
"react-router": "^4.2.0",
"react-router-dom": "^4.2.2",
"react-scripts": "1.1.4",
"web3": "^1.0.0-beta.35"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test --env=jsdom",
"eject": "react-scripts eject"
}
}

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="theme-color" content="#000000">
<!--
manifest.json provides metadata used when your web app is added to the
homescreen on Android. See https://developers.google.com/web/fundamentals/engage-and-retain/web-app-manifest/
-->
<link rel="manifest" href="%PUBLIC_URL%/manifest.json">
<link rel="shortcut icon" href="%PUBLIC_URL%/app-icon.png">
<!--
Notice the use of %PUBLIC_URL% in the tags above.
It will be replaced with the URL of the `public` folder during the build.
Only files inside the `public` folder can be referenced from the HTML.
Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
work correctly both with client-side routing and a non-root public URL.
Learn how to configure a non-root public URL by running `npm run build`.
-->
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" integrity="sha384-9gVQ4dYFwwWSjIDZnLEWnxCjeSWFphJiwGPXr1jddIhOegiu1FwO5qRGvFXOdJZ4" crossorigin="anonymous">
<!-- font awesome -->
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.0.10/css/all.css" integrity="sha384-+d0P83n9kaQMCwj8F4RJB66tzIwOKmrdb46+porD/OvrJ+37WqIM7UoBtwHO6Nlg" crossorigin="anonymous">
<title>reciproka wallet</title>
</head>
<body>
<noscript>
You need to enable JavaScript to run this app.
</noscript>
<div id="root"></div>
<!--
This HTML file is a template.
If you open it directly in the browser, you will see an empty page.
You can add webfonts, meta tags, or analytics to this file.
The build step will place the bundled scripts into the <body> tag.
To begin the development, run `npm start` or `yarn start`.
To create a production bundle, use `npm run build` or `yarn build`.
-->
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js" integrity="sha384-cs/chFZiN24E4KMATLdqdvsezGxaGsi4hLGOzlXwp5UZB1LY//20VyM2taTB4QvJ" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js" integrity="sha384-uefMccjFJAIv6A+rW+L4AHf99KvxDjWSu1z9VI8SKNVmz4sk7buKt/6v9KI65qnm" crossorigin="anonymous"></script>
</body>
</html>

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{
"short_name": "React App",
"name": "Create React App Sample",
"icons": [
{
"src": "favicon.ico",
"sizes": "64x64 32x32 24x24 16x16",
"type": "image/x-icon"
}
],
"start_url": "./index.html",
"display": "standalone",
"theme_color": "#000000",
"background_color": "#ffffff"
}

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.App {
text-align: center;
}
.App-logo {
animation: App-logo-spin infinite 20s linear;
height: 80px;
}
.App-header {
background-color: #222;
height: 150px;
padding: 20px;
color: white;
}
.App-title {
font-size: 1.5em;
}
.App-intro {
font-size: large;
}
@keyframes App-logo-spin {
from { transform: rotate(0deg); }
to { transform: rotate(360deg); }
}

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import React, { Component } from 'react';
import {BrowserRouter, Route, Switch} from 'react-router-dom'
import './App.css';
import dashboardView from './views/dashboard/dashboard';
import './eth/eth.js';
class App extends Component {
render() {
return (
<BrowserRouter>
<div>
<nav className="navbar navbar-light bg-light">
{/* <span className="emptyHorizontal40"></span> */}
<a className="navbar-brand" href="">
<img src={require('./img/app-icon.png')} width="30" height="30" className="d-inline-block align-top" alt=""/>
idWallet
</a>
</nav>
{/* <SideMenu/> */}
<main className="container">
<br/>
<div id="view">
<Switch>
<Route exact="exact" path="/" component={dashboardView}></Route>
</Switch>
</div>
</main>
</div>
</BrowserRouter>
);
}
}
export default App;

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import React from 'react';
import ReactDOM from 'react-dom';
import App from './App';
it('renders without crashing', () => {
const div = document.createElement('div');
ReactDOM.render(<App />, div);
ReactDOM.unmountComponentAtNode(div);
});

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import Web3 from 'web3';
const web3 = new Web3("https://ropsten.infura.io/TFnR8BWJlqZOKxHHZNcs");
var account = web3.eth.accounts.create()
console.log("account", account)
web3.eth.getAccounts(function(error, result){
console.log(result)
})
web3.eth.getBalance(account.address)
.then(balance => {
console.log("balance", balance)
})

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body {
margin: 0;
padding: 0;
font-family: sans-serif;
}

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import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import App from './App';
import registerServiceWorker from './registerServiceWorker';
ReactDOM.render(<App />, document.getElementById('root'));
registerServiceWorker();

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// In production, we register a service worker to serve assets from local cache.
// This lets the app load faster on subsequent visits in production, and gives
// it offline capabilities. However, it also means that developers (and users)
// will only see deployed updates on the "N+1" visit to a page, since previously
// cached resources are updated in the background.
// To learn more about the benefits of this model, read https://goo.gl/KwvDNy.
// This link also includes instructions on opting out of this behavior.
const isLocalhost = Boolean(
window.location.hostname === 'localhost' ||
// [::1] is the IPv6 localhost address.
window.location.hostname === '[::1]' ||
// 127.0.0.1/8 is considered localhost for IPv4.
window.location.hostname.match(
/^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/
)
);
export default function register() {
if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) {
// The URL constructor is available in all browsers that support SW.
const publicUrl = new URL(process.env.PUBLIC_URL, window.location);
if (publicUrl.origin !== window.location.origin) {
// Our service worker won't work if PUBLIC_URL is on a different origin
// from what our page is served on. This might happen if a CDN is used to
// serve assets; see https://github.com/facebookincubator/create-react-app/issues/2374
return;
}
window.addEventListener('load', () => {
const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`;
if (isLocalhost) {
// This is running on localhost. Lets check if a service worker still exists or not.
checkValidServiceWorker(swUrl);
// Add some additional logging to localhost, pointing developers to the
// service worker/PWA documentation.
navigator.serviceWorker.ready.then(() => {
console.log(
'This web app is being served cache-first by a service ' +
'worker. To learn more, visit https://goo.gl/SC7cgQ'
);
});
} else {
// Is not local host. Just register service worker
registerValidSW(swUrl);
}
});
}
}
function registerValidSW(swUrl) {
navigator.serviceWorker
.register(swUrl)
.then(registration => {
registration.onupdatefound = () => {
const installingWorker = registration.installing;
installingWorker.onstatechange = () => {
if (installingWorker.state === 'installed') {
if (navigator.serviceWorker.controller) {
// At this point, the old content will have been purged and
// the fresh content will have been added to the cache.
// It's the perfect time to display a "New content is
// available; please refresh." message in your web app.
console.log('New content is available; please refresh.');
} else {
// At this point, everything has been precached.
// It's the perfect time to display a
// "Content is cached for offline use." message.
console.log('Content is cached for offline use.');
}
}
};
};
})
.catch(error => {
console.error('Error during service worker registration:', error);
});
}
function checkValidServiceWorker(swUrl) {
// Check if the service worker can be found. If it can't reload the page.
fetch(swUrl)
.then(response => {
// Ensure service worker exists, and that we really are getting a JS file.
if (
response.status === 404 ||
response.headers.get('content-type').indexOf('javascript') === -1
) {
// No service worker found. Probably a different app. Reload the page.
navigator.serviceWorker.ready.then(registration => {
registration.unregister().then(() => {
window.location.reload();
});
});
} else {
// Service worker found. Proceed as normal.
registerValidSW(swUrl);
}
})
.catch(() => {
console.log(
'No internet connection found. App is running in offline mode.'
);
});
}
export function unregister() {
if ('serviceWorker' in navigator) {
navigator.serviceWorker.ready.then(registration => {
registration.unregister();
});
}
}

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import React, { Component } from 'react';
import {card, tx} from 'oce-components'
class dashboard extends Component {
constructor(props) {
super(props);
this.state = {
};
}
render() {
return (
<div>
<card></card>
</div>
);
}
}
export default dashboard;