Add some stats to the Trades view

app/renderer/containers/SuperContainer.js

@@ -55,12 +55,11 @@ const addLifeCycleHooks = (self, lifecycleHooks) => {
 			if (typeof originalMethod === 'function') {
 				originalMethod.call(this, ...args);
 			}
-			hook(...args);
+			hook.call(this, ...args);
 		};
 	}
 };
 
-// eslint-disable-next-line no-unused-vars
 const withState = (FunctionalComponent, initialState = {}, lifecycleHooks = {}) => {
 	return toClassComponent(FunctionalComponent, self => {
 		self.state = initialState;
@@ -141,3 +140,7 @@ class SuperContainer extends Container {
 }
 
 export default SuperContainer;
+
+export {
+	withState,
+};

app/renderer/swap-db.js

@@ -4,6 +4,8 @@ import cryptoPouch from 'crypto-pouch';
 import Emittery from 'emittery';
 import PQueue from 'p-queue';
 import roundTo from 'round-to';
+import {subDays} from 'date-fns';
+import appContainer from 'containers/App';
 import swapTransactions from './swap-transactions';
 
 PouchDB.plugin(pouchDBFind);
@@ -191,28 +193,68 @@ class SwapDB {
 		return swap;
 	}
 
-	async _getAllSwapData() {
+	async _getAllSwapData(options = {}) {
 		await this.ready;
 
+		options = {
+			since: true,
+			sort: 'desc',
+			...options,
+		};
+
+		const query = {
+			selector: {
+				timeStarted: {
+					$gt: options.since,
+				},
+			},
+			sort: [
+				{
+					timeStarted: options.sort,
+				},
+			],
+		};
+
 		// We need `timeStarted: {$gt: true}` so PouchDB can sort.
 		// https://github.com/pouchdb/pouchdb/issues/7206
-		const {docs} = await this.db.find({
-			selector: {timeStarted: {$gt: true}},
-			sort: [{timeStarted: 'desc'}],
-		});
+		const {docs} = await this.db.find(options.query || query);
 
 		return docs;
 	}
 
-	async getSwaps() {
-		const swapData = await this._getAllSwapData();
-
+	async getSwaps(options) {
+		const swapData = await this._getAllSwapData(options);
 		return swapData.map(this._formatSwap);
 	}
 
 	async destroy() {
 		await this.db.destroy();
 	}
+
+	async statsSince(timestamp) {
+		const swaps = await this.getSwaps({since: timestamp});
+		const successfulSwaps = swaps.filter(swap => swap.status === 'completed');
+
+		const quoteCurrencies = new Set();
+		for (const swap of successfulSwaps) {
+			quoteCurrencies.add(swap.quoteCurrency);
+		}
+
+		let totalSwapsWorthInUsd = 0;
+		for (const swap of successfulSwaps) {
+			totalSwapsWorthInUsd += swap.quoteCurrencyAmount * appContainer.getCurrency(swap.quoteCurrency).cmcPriceUsd;
+		}
+
+		return {
+			successfulSwapCount: successfulSwaps.length,
+			currencyCount: quoteCurrencies.size,
+			totalSwapsWorthInUsd,
+		};
+	}
+
+	statsSinceLastMonth() {
+		return this.statsSince(subDays(Date.now(), 30).getTime());
+	}
 }
 
 export default SwapDB;

app/renderer/views/Trades.js

@@ -1,10 +1,13 @@
 import React from 'react';
 import {classNames} from 'react-extras';
 import {Subscribe} from 'unstated';
+import {withState} from 'containers/SuperContainer';
+import appContainer from 'containers/App';
 import exchangeContainer from 'containers/Exchange'; // TODO(sindresorhus): Find a better place to have the SwapDB data, since both the Exchange and Trades view uses it
 import tradesContainer from 'containers/Trades';
 import View from 'components/View';
 import SwapList from 'components/SwapList';
+import {formatCurrency} from '../util';
 import AppTabView from './TabView';
 import './Exchange/Swaps.scss';
 import './Trades.scss';
@@ -43,29 +46,48 @@ const SwapHistory = () => {
 	return <SwapList swaps={filteredData} showCancel/>;
 };
 
-const Trades = () => (
+const Trades = props => (
 	<Subscribe to={[tradesContainer, /* Temp => */exchangeContainer]}>
-		{() => (
-			<AppTabView title="Trades" className="Trades">
-				<header>
-					<nav>
-						<TabButton
-							title="Open Orders"
-							component={OpenOrders}
-						/>
-						<TabButton
-							title="Swap History"
-							component={SwapHistory}
-						/>
-					</nav>
-				</header>
-				<main>
-					<TabView component={OpenOrders}/>
-					<TabView component={SwapHistory}/>
-				</main>
-			</AppTabView>
-		)}
+		{() => {
+			const {state} = props;
+			const {stats} = state;
+
+			return (
+				<AppTabView title="Trades" className="Trades">
+					<header>
+						<nav>
+							<TabButton
+								title="Open Orders"
+								component={OpenOrders}
+							/>
+							<TabButton
+								title="Swap History"
+								component={SwapHistory}
+							/>
+						</nav>
+						<div className="stats">
+							{stats &&
+								<p>In the last month you did {stats.successfulSwapCount} successful {stats.successfulSwapCount === 1 ? 'trade' : 'trades'} for {stats.currencyCount} {stats.currencyCount === 1 ? 'currency' : 'currencies'} worth {formatCurrency(stats.totalSwapsWorthInUsd)} in total</p>
+							}
+						</div>
+					</header>
+					<main>
+						<TabView component={OpenOrders}/>
+						<TabView component={SwapHistory}/>
+					</main>
+				</AppTabView>
+			);
+		}}
 	</Subscribe>
 );
 
-export default Trades;
+export default withState(Trades, {}, {
+	async componentDidMount() {
+		/// TODO: This is only here temporarily until we move the swap stuff to the App container
+		exchangeContainer.setSwapHistory();
+
+		this.setState({
+			stats: await appContainer.swapDB.statsSinceLastMonth(),
+		});
+	},
+});

app/renderer/views/Trades.scss

@@ -1,3 +1,5 @@
+@import '../styles/variables';
+
 .Trades {
 	display: flex;
 	height: 100%;
@@ -11,6 +13,20 @@
 
 	header {
 		padding: 20px;
+		position: relative;
+
+		.stats {
+			position: absolute;
+			top: 0;
+			right: 20px;
+			@include center-vertically;
+
+			p {
+				font-size: 12px;
+				margin: 0;
+				padding: 0;
+			}
+		}
 	}
 
 	main {