.gitignore

@@ -21,5 +21,3 @@
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
-
-.eslintcache

src/App.js

@@ -1,12 +1,17 @@
 import React from "react";
-import { Grommet } from "grommet";
+import { Counter } from "./features/counter/Counter";
-import Core from "./Core";
+import "./App.css";
 
 function App() {
 	return (
-		<Grommet plain>
+		<div className="App">
-			<Core />
+			<header className="App-header">
-		</Grommet>
+				<Counter />
+				<p>
+					Edit <code>src/App.js</code> and save to reload.
+				</p>
+			</header>
+		</div>
 	);
 }
 

src/Core.js

@@ -1,37 +0,0 @@
-import React from "react";
-import { useSelector, useDispatch } from "react-redux";
-
-import { setPlugin, selectCore } from "./coreSlice";
-import * as plugins from "./plugins";
-
-function Core() {
-	const coreState = useSelector(selectCore);
-	const dispatch = useDispatch();
-	console.log(plugins.default);
-	const plugin = plugins.default[coreState.plugin];
-	const props = {
-		data: coreState.data,
-		close: () => dispatch(setPlugin(false))
-	};
-	return <>
-		{plugin ? null :
-			<>
-				<p>Welcome to Honda!</p>
-				{Object.keys(plugins.default).map(
-					i => <p
-						onClick={() => dispatch(setPlugin(i))}
-						key={i}
-					>
-						{plugins.default[i].pluginName}
-					</p>)
-				}
-			</>
-		}
-		{plugin ?
-			React.cloneElement(plugin(), props)
-			:null
-		}
-	</>;
-}
-
-export default Core;

src/app/store.js

@@ -1,8 +1,8 @@
 import { configureStore } from "@reduxjs/toolkit";
-import coreReducer from "../coreSlice";
+import counterReducer from "../features/counter/counterSlice";
 
 export default configureStore({
 	reducer: {
-		core: coreReducer,
+		counter: counterReducer,
 	},
 });

src/coreSlice.js

@@ -1,17 +0,0 @@
-import { createSlice } from "@reduxjs/toolkit";
-
-export const coreSlice = createSlice({
-	name: "core",
-	initialState: {
-		plugin: false,
-		data: {}
-	},
-	reducers: {
-		setPlugin: (state, action) => ({...state, plugin: action.payload}),
-		setData: (state, action) => ({...state, data: action.payload}),
-	}
-});
-
-export const { setPlugin, setData } = coreSlice.actions;
-export const selectCore = state => state.core;
-export default coreSlice.reducer;

src/features/counter/Counter.js

@@ -0,0 +1,58 @@
+import React, { useState } from "react";
+import { useSelector, useDispatch } from "react-redux";
+import {
+	decrement,
+	increment,
+	incrementByAmount,
+	incrementAsync,
+	selectCount,
+} from "./counterSlice";
+import styles from "./Counter.module.css";
+
+export function Counter() {
+	const count = useSelector(selectCount);
+	const dispatch = useDispatch();
+	const [incrementAmount, setIncrementAmount] = useState("2");
+
+	return (
+		<div>
+			<div className={styles.row}>
+				<button
+					className={styles.button}
+					aria-label="Increment value"
+					onClick={() => dispatch(increment())}
+				>
+					+
+				</button>
+				<span className={styles.value}>{count}</span>
+				<button
+					className={styles.button}
+					aria-label="Decrement value"
+					onClick={() => dispatch(decrement())}
+				>
+					-
+				</button>
+			</div>
+			<div className={styles.row}>
+				<input
+					className={styles.textbox}
+					aria-label="Set increment amount"
+					value={incrementAmount}
+					onChange={e => setIncrementAmount(e.target.value)}
+				/>
+				<button
+					className={styles.button}
+					onClick={() => dispatch(incrementByAmount(Number(incrementAmount) || 0))}
+				>
+					Add Amount
+				</button>
+				<button
+					className={styles.asyncButton}
+					onClick={() => dispatch(incrementAsync(Number(incrementAmount) || 0))}
+				>
+					Add Async
+				</button>
+			</div>
+		</div>
+	);
+}

src/features/counter/Counter.module.css

@@ -0,0 +1,74 @@
+.row {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.row:not(:last-child) {
+  margin-bottom: 16px;
+}
+
+.value {
+  font-size: 78px;
+  padding-left: 16px;
+  padding-right: 16px;
+  margin-top: 2px;
+  font-family: 'Courier New', Courier, monospace;
+}
+
+.button {
+  appearance: none;
+  background: none;
+  font-size: 32px;
+  padding-left: 12px;
+  padding-right: 12px;
+  outline: none;
+  border: 2px solid transparent;
+  color: rgb(112, 76, 182);
+  padding-bottom: 4px;
+  cursor: pointer;
+  background-color: rgba(112, 76, 182, 0.1);
+  border-radius: 2px;
+  transition: all 0.15s;
+}
+
+.textbox {
+  font-size: 32px;
+  padding: 2px;
+  width: 64px;
+  text-align: center;
+  margin-right: 8px;
+}
+
+.button:hover, .button:focus {
+  border: 2px solid rgba(112, 76, 182, 0.4);
+}
+
+.button:active {
+  background-color: rgba(112, 76, 182, 0.2);
+}
+
+.asyncButton {
+  composes: button;
+  position: relative;
+  margin-left: 8px;
+}
+
+.asyncButton:after {
+  content: "";
+  background-color: rgba(112, 76, 182, 0.15);
+  display: block;
+  position: absolute;
+  width: 100%;
+  height: 100%;
+  left: 0;
+  top: 0;
+  opacity: 0;
+  transition: width 1s linear, opacity 0.5s ease 1s;
+}
+
+.asyncButton:active:after {
+  width: 0%;
+  opacity: 1;
+  transition: 0s
+}

src/features/counter/counterSlice.js

@@ -0,0 +1,42 @@
+import { createSlice } from "@reduxjs/toolkit";
+
+export const counterSlice = createSlice({
+	name: "counter",
+	initialState: {
+		value: 0,
+	},
+	reducers: {
+		increment: state => {
+			// Redux Toolkit allows us to write "mutating" logic in reducers. It
+			// doesn"t actually mutate the state because it uses the Immer library,
+			// which detects changes to a "draft state" and produces a brand new
+			// immutable state based off those changes
+			state.value += 1;
+		},
+		decrement: state => {
+			state.value -= 1;
+		},
+		incrementByAmount: (state, action) => {
+			state.value += action.payload;
+		},
+	},
+});
+
+export const { increment, decrement, incrementByAmount } = counterSlice.actions;
+
+// The function below is called a thunk and allows us to perform async logic. It
+// can be dispatched like a regular action: `dispatch(incrementAsync(10))`. This
+// will call the thunk with the `dispatch` function as the first argument. Async
+// code can then be executed and other actions can be dispatched
+export const incrementAsync = amount => dispatch => {
+	setTimeout(() => {
+		dispatch(incrementByAmount(amount));
+	}, 1000);
+};
+
+// The function below is called a selector and allows us to select a value from
+// the state. Selectors can also be defined inline where they"re used instead of
+// in the slice file. For example: `useSelector((state) => state.counter.value)`
+export const selectCount = state => state.counter.value;
+
+export default counterSlice.reducer;

src/plugins/index.js

@@ -1,6 +0,0 @@
-import Mpd from "./mpd";
-import Weather from "./weather";
-export default {
-	mpd: Mpd,
-	weather: Weather,
-};

src/plugins/mpd.js

@@ -1,9 +0,0 @@
-import React from "react";
-
-function Mpd() {
-	return <p> MPD Plugin </p>;
-}
-
-Mpd.pluginName = "Music Player";
-
-export default Mpd;

src/plugins/weather.js

@@ -1,9 +0,0 @@
-import React from "react";
-
-function Weather() {
-	return <p> Weather Plugin </p>;
-}
-
-Weather.pluginName = "Weather";
-
-export default Weather;