Stuff.

contentScript.js

@@ -43,7 +43,7 @@ if (typeof Overlay === "undefined") {
       this.applyDefaultStyle(this.mBottomRight);
 
       this.mTopLeft.id = "overlay-mTopLeft";
-      this.mTopLeft.style.left = 0;
+      this.mTopLeft.style.left = "0";
       this.mTopLeft.style.top = "25%";
 
       this.mCenter.id = "overlay-mCenter";

my-bois/.gitignore

@@ -0,0 +1,23 @@
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# 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*

my-bois/README.md

@@ -0,0 +1,68 @@
+This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app).
+
+## Available Scripts
+
+In the project directory, you can run:
+
+### `npm start`
+
+Runs the app in the development mode.<br />
+Open [http://localhost:3000](http://localhost:3000) to view it in the browser.
+
+The page will reload if you make edits.<br />
+You will also see any lint errors in the console.
+
+### `npm test`
+
+Launches the test runner in the interactive watch mode.<br />
+See the section about [running tests](https://facebook.github.io/create-react-app/docs/running-tests) for more information.
+
+### `npm run build`
+
+Builds the app for production to the `build` folder.<br />
+It correctly bundles React in production mode and optimizes the build for the best performance.
+
+The build is minified and the filenames include the hashes.<br />
+Your app is ready to be deployed!
+
+See the section about [deployment](https://facebook.github.io/create-react-app/docs/deployment) for more information.
+
+### `npm run eject`
+
+**Note: this is a one-way operation. Once you `eject`, you can’t go back!**
+
+If you aren’t satisfied with the build tool and configuration choices, you can `eject` at any time. This command will remove the single build dependency from your project.
+
+Instead, it will copy all the configuration files and the transitive dependencies (Webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except `eject` will still work, but they will point to the copied scripts so you can tweak them. At this point you’re on your own.
+
+You don’t have to ever use `eject`. The curated feature set is suitable for small and middle deployments, and you shouldn’t feel obligated to use this feature. However we understand that this tool wouldn’t be useful if you couldn’t customize it when you are ready for it.
+
+## Learn More
+
+You can learn more in the [Create React App documentation](https://facebook.github.io/create-react-app/docs/getting-started).
+
+To learn React, check out the [React documentation](https://reactjs.org/).
+
+### Code Splitting
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/code-splitting
+
+### Analyzing the Bundle Size
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size
+
+### Making a Progressive Web App
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app
+
+### Advanced Configuration
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/advanced-configuration
+
+### Deployment
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/deployment
+
+### `npm run build` fails to minify
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify

my-bois/package.json

@@ -0,0 +1,34 @@
+{
+  "name": "my-bois",
+  "version": "0.1.0",
+  "private": true,
+  "dependencies": {
+    "react": "^16.11.0",
+    "react-dom": "^16.11.0",
+    "react-scripts": "3.2.0"
+  },
+  "devDependencies": {
+    "@types/react": "^16.9.11"
+  },
+  "scripts": {
+    "start": "react-scripts start",
+    "build": "react-scripts build",
+    "test": "react-scripts test",
+    "eject": "react-scripts eject"
+  },
+  "eslintConfig": {
+    "extends": "react-app"
+  },
+  "browserslist": {
+    "production": [
+      ">0.2%",
+      "not dead",
+      "not op_mini all"
+    ],
+    "development": [
+      "last 1 chrome version",
+      "last 1 firefox version",
+      "last 1 safari version"
+    ]
+  }
+}

my-bois/public/index.html

@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <meta name="theme-color" content="#000000" />
+    <meta
+      name="description"
+      content="Web site created using create-react-app"
+    />
+    <link rel="apple-touch-icon" href="logo192.png" />
+    <!--
+      manifest.json provides metadata used when your web app is installed on a
+      user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
+    -->
+    <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
+    <!--
+      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`.
+    -->
+    <title>React App</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`.
+    -->
+  </body>
+</html>

my-bois/public/manifest.json

@@ -0,0 +1,32 @@
+{
+  "short_name": "YKonsole Helper",
+  "version": "1.0",
+  "manifest_version": 2,
+  "content_scripts": [
+    {
+      "matches": ["https://www.youtube.com/*"],
+      "css": "static/css/main.css",
+      "js": "static/css/main.js"
+    }
+  ],
+  "name": "YKonsole Helper",
+  "icons": [
+    {
+      "src": "icon.png",
+      "sizes": "32x32",
+      "type": "image/x-icon"
+    }
+  ],
+  "start_url": ".",
+  "display": "standalone",
+  "theme_color": "#000000",
+  "background_color": "#ffffff",
+  "permissions": [
+    "storage",
+    "activeTab",
+    "declarativeContent",
+    "https://www.youtube.com/",
+    "https://indigo.stian-aune.com/",
+    "http://127.0.0.1:9999/"
+  ]
+}

my-bois/public/robots.txt

@@ -0,0 +1,2 @@
+# https://www.robotstxt.org/robotstxt.html
+User-agent: *

my-bois/src/App.js

@@ -0,0 +1,15 @@
+import React from 'react';
+import {CentreBoi, LeftBoi, RightBoi} from "./components/Bois";
+import {StatusContextProvider} from "./components/Contexts";
+
+function App() {
+  return (
+    <StatusContextProvider>
+      <LeftBoi/>
+      <CentreBoi/>
+      <RightBoi/>
+    </StatusContextProvider>
+  );
+}
+
+export default App;

my-bois/src/components/Bois.css

@@ -0,0 +1,44 @@
+.Boi {
+  position: fixed;
+  z-index: 99999999;
+  color: #FFF;
+  background-color: rgba(0, 0, 0, 0.5);
+  padding: 0.25em 0.5ch;
+  font-size: 3vmax;
+  line-height: 1.33em;
+  font-family: sans-serif;
+}
+
+.Boi-left {
+  left: 0;
+  top: 50%;
+  transform: translate(0, -50%);
+}
+
+.Boi-centre {
+  left: 50%;
+  top: 50%;
+  transform: translate(-50%, -50%);
+  background-color: rgba(0, 0, 0, 0.75);
+  font-size: 5vmax;
+}
+
+.Boi-centre-warning {
+  margin-top: 1em;
+  font-weight: 800;
+  font-size: 150%;
+}
+
+.Boi-centre-info {
+  font-size: 80%;
+}
+
+.Boi-centre-info td:first-child {
+  padding-right: 1ch;
+}
+
+.Boi-right {
+  right: 0;
+  bottom: 0;
+  font-size: 2vmax;
+}

my-bois/src/components/Bois.jsx

@@ -0,0 +1,186 @@
+import React, {useContext, useEffect, useMemo, useState} from 'react';
+
+import "./Bois.css";
+import {StatusContext} from "./Contexts";
+import {CalorieScore, CpmScore, DistanceScore, RpmScore, Timer} from "./Score";
+import calculateDiff from "../helpers/diff";
+import useKey from "../hooks/useKey";
+import {COLOR_VERY_BAD} from "../helpers/color";
+import {Milestones} from "./Milestones";
+
+const Boi = ({type, children}) => {
+  return (
+    <div className={`Boi Boi-${type}`}>
+      {children}
+    </div>
+  )
+};
+
+export const LeftBoi = () => {
+  const {prevLongDiff, workoutStatus, program} = useContext(StatusContext);
+  if (workoutStatus === null || program === null) {
+    return null;
+  }
+
+  const {minutes, seconds, calories, distance, rpm} = workoutStatus;
+  const diff = calculateDiff(program, minutes, seconds, calories);
+  const cpm = calories / (minutes + (seconds / 60));
+
+  return (
+    <Boi type="left">
+      <Timer minutes={minutes} seconds={seconds}/>
+      <CalorieScore calories={calories} diff={diff} prevDiff={prevLongDiff}/>
+      <DistanceScore distance={distance}/>
+      <RpmScore rpm={rpm}/>
+      <CpmScore cpm={cpm}/>
+    </Boi>
+  );
+};
+
+export const CentreBoi = () => {
+  const {
+    state, program, setProgram, bike, setBike, bikes, programs,
+    start, pause, stop, create, workoutStatus,
+  } = useContext(StatusContext);
+  const [options, setOptions] = useState(null);
+  const [current, setCurrent] = useState(0);
+
+  useEffect(() => {
+    if (bikes === null && programs === null) {
+      return;
+    }
+
+    setOptions(state === "bike" ? bikes : programs);
+  }, [state, bike, program, bikes, programs]);
+
+  useKey("-", () => {
+    if (options === null) {
+      return false;
+    }
+
+    if (current > 0) {
+      setCurrent(current - 1);
+    } else {
+      setCurrent(options.length - 1);
+    }
+
+    return true;
+  });
+
+  useKey("+", () => {
+    if (options === null) {
+      return false;
+    }
+
+    if (current < options.length - 1) {
+      setCurrent(current + 1);
+    } else {
+      setCurrent(0);
+    }
+
+    return true;
+  });
+
+  useKey("Enter", () => {
+    if (state === "bike") {
+      setBike(options[current]);
+
+      return true;
+    } else if (state === "program") {
+      setProgram(options[current]);
+      create(options[current]);
+
+      return true;
+    } else if (state === "connected") {
+      start();
+
+      return true;
+    } else if (state === "started") {
+      pause();
+
+      return true;
+    }
+
+    return false;
+  });
+
+  useKey("Escape", () => {
+    if (state === "connected") {
+      stop();
+
+      return true;
+    }
+  });
+
+  if (state === "started" && workoutStatus !== null) {
+    const {minutes, seconds, calories} = workoutStatus;
+    const diff = calculateDiff(program, minutes, seconds, calories);
+
+    if (diff < 0) {
+      return (
+        <Boi type="centre">
+          <span className="Boi-centre-warning" style={{color: COLOR_VERY_BAD}}>
+            {diff}
+          </span>
+        </Boi>
+      );
+    } else {
+      return null;
+    }
+  }
+
+  if (bikes === null || programs === null) {
+    return <Boi type="centre">Laster inn...</Boi>;
+  }
+
+  return (
+    <Boi type="centre">
+      {state === "stopped" && (
+        <div className="Boi-centre-info">Inaktiv</div>
+      )}
+      {state === "bike" && (
+        <div className="Boi-centre-info">
+          Velg sykkel (+/-):
+          <br/>
+          <b>{options[current].name}</b>
+        </div>
+      )}
+      {state === "program" && (
+        <div className="Boi-centre-info">
+          Velg program (+/-):
+          <br/>
+          <b>{options[current].name}</b>
+        </div>
+      )}
+      {state === "connected" && (
+        <table className="Boi-centre-info">
+          <tr>
+            <td>Enter:</td>
+            <td><b>Start</b></td>
+          </tr>
+          <tr>
+            <td>Esc:</td>
+            <td><b>Avslutt</b></td>
+          </tr>
+        </table>
+      )}
+      {state === "unknown" && (
+        <div className="Boi-centre-info">Noe gikk galt</div>
+      )}
+    </Boi>
+  );
+};
+
+export const RightBoi = () => {
+  const {milestones} = useContext(StatusContext);
+
+  if ((milestones || []).length === 0) {
+    return null;
+  }
+
+  return (
+    <Boi type="right">
+      <Milestones milestones={milestones.sort((i, j) => j.minutes - i.minutes)}/>
+    </Boi>
+  );
+};

my-bois/src/components/Contexts.jsx

@@ -0,0 +1,167 @@
+import React, {createContext, useEffect, useState} from "react";
+import {
+  connectWorkout,
+  createNewWorkout,
+  fetchActiveWorkouts, fetchBikes, fetchPrograms,
+  openWebsocket, pauseWorkout,
+  startWorkout,
+  stopWorkout
+} from "../hooks/net";
+import useMilestones from "../hooks/milestones";
+
+export const StatusContext = createContext({
+  bike: null,
+  program: null,
+  bikes: null,
+  programs: null,
+  workout: null,
+  workoutStatus: null,
+  setBike: null,
+  setProgram: null,
+  state: null,
+  milestones: [],
+  create: () => null,
+  resume: () => null,
+  start: () => null,
+  pause: () => null,
+  stop: () => null,
+});
+
+export const StatusContextProvider = ({children}) => {
+  const [bike, setBike] = useState(null);
+  const [program, setProgram] = useState(null);
+  const [bikes, setBikes] = useState(null);
+  const [programs, setPrograms] = useState(null);
+  const [workout, setWorkout] = useState(null);
+  const [workoutStatus, setWorkoutStatus] = useState(null);
+  const [state, setState] = useState("offline");
+  const {milestones, prevDiff, prevLongDiff, msDispatch} = useMilestones();
+  const [socket, setSocket] = useState(null);
+
+  useEffect(() => {
+    if (programs === null) {
+      fetchPrograms().then(newPrograms => setPrograms(newPrograms));
+    }
+  }, [programs]);
+
+  useEffect(() => {
+    if (bikes === null) {
+      fetchBikes().then(newBikes => {
+        setBikes(newBikes);
+
+        if (newBikes.length === 1) {
+          setBike(newBikes[0]);
+        }
+      });
+    }
+  }, [bikes]);
+
+  useEffect(() => {
+    if (bike === null && program === null && workout === null) {
+      resume();
+    }
+  }, [bike, program, workout]);
+
+  useEffect(() => {
+    if (bikes === null || programs === null) {
+      setState("loading");
+    } else if (workout !== null) {
+      setState(workout.state || "unknown");
+    } else if (bike === null) {
+      setState("bike");
+    } else if (program === null) {
+      setState("program");
+    }
+  }, [bike, program, workout, bikes, programs]);
+
+  useEffect(() => {
+    if (socket === null) {
+      return;
+    }
+
+    if (workout === null) {
+      socket.close();
+      setSocket(null);
+      return;
+    }
+
+    socket.onmessage = ({data}) => {
+      onSocketMessage(workout, program, JSON.parse(data));
+    };
+
+    return () => {
+      socket.onmessage = null;
+    }
+  }, [socket, workout, program]);
+
+  function onSocketMessage(myWorkout, program, body) {
+    if (typeof body.workout !== "undefined") {
+      setWorkout({...body.workout, ...myWorkout});
+    }
+
+    if (typeof body.workoutStatusBackfill !== "undefined") {
+      body.workoutStatusBackfill.forEach(wsbf => {
+        setWorkoutStatus(wsbf);
+        msDispatch({type: "measure", payload: {...wsbf, program}});
+      });
+    }
+
+    if (typeof body.workoutStatus !== "undefined") {
+      setWorkoutStatus(body.workoutStatus);
+      msDispatch({type: "measure", payload: {...body.workoutStatus, program}});
+    }
+  }
+
+  async function create(myProgram = null) {
+    setWorkoutStatus(null);
+
+    let newWorkout = await createNewWorkout(bike, myProgram || program);
+
+    setWorkout(newWorkout);
+    setWorkout(await connectWorkout(newWorkout));
+
+    setSocket(openWebsocket(newWorkout));
+  }
+
+  async function resume() {
+    const activeWorkouts = await fetchActiveWorkouts();
+    const count = activeWorkouts.length;
+    const last = count > 0 ? activeWorkouts[count - 1] : null;
+
+    if (last !== null) {
+      setProgram(last.program);
+      setWorkout(last);
+      setBike(last.bike);
+
+      setSocket(openWebsocket(last));
+    }
+  }
+
+  async function start() {
+    setWorkout(await startWorkout(workout));
+  }
+
+  async function pause() {
+    setWorkout(await pauseWorkout(workout));
+  }
+
+  async function stop() {
+    await stopWorkout(workout);
+
+    setBike(null);
+    setProgram(null);
+    setWorkout(null);
+    msDispatch({type: "clear"});
+  }
+
+  return (
+    <StatusContext.Provider value={{
+      bike, program, workout, workoutStatus, state, milestones,
+      setBike, setProgram,
+      create, resume, start, pause, stop,
+      programs, bikes,
+    }}>
+      {children}
+    </StatusContext.Provider>
+  )
+};

my-bois/src/components/Milestones.css

@@ -0,0 +1,17 @@
+.Milestones {
+  font-size: 80%;
+}
+
+.Milestone-minutes,
+.Milestone-calories,
+.Milestone-diff {
+  text-align: right;
+}
+
+.Milestone-calories {
+  min-width: 4ch;
+}
+
+.Milestone-diff {
+  min-width: 3ch;
+}

my-bois/src/components/Milestones.jsx

@@ -0,0 +1,19 @@
+import React from 'react';
+import {diffString} from "../helpers/diff";
+
+import "./Milestones.css";
+import {colorByDiff} from "../helpers/color";
+
+export const Milestones = ({milestones}) => (
+  <table className="Milestone">
+    {milestones.map(milestone => <Milestone {...milestone} />)}
+  </table>
+);
+
+const Milestone = ({minutes, calories, diff, prevDiff}) => (
+  <tr style={{color: colorByDiff(diff, prevDiff)}}>
+    <td className="Milestone-minutes">{minutes}</td>
+    <td className="Milestone-calories">{calories}</td>
+    <td className="Milestone-diff">{minutes % 5 === 0 ? diffString(diff) : ""}</td>
+  </tr>
+);

my-bois/src/components/Score.css

@@ -0,0 +1,12 @@
+.Score-value {
+  font-weight: 800;
+}
+
+.Score-suffix {
+  font-size: 80%;
+}
+
+.Timer-number {
+  font-size: 125%;
+  font-weight: 800;
+}

my-bois/src/components/Score.jsx

@@ -0,0 +1,40 @@
+import React from 'react';
+import {COLOR_NEUTRAL, colorByDiff} from "../helpers/color";
+
+import "./Score.css";
+
+const Score = ({value, suffix = null, color = COLOR_NEUTRAL}) => (
+  <div className="Score">
+    <span className="Score-value" style={{color}}>{value}</span>
+    {suffix !== null && (
+      <>
+        &nbsp;
+        <span className="Score-suffix">{suffix}</span>
+      </>
+    )}
+  </div>
+);
+
+export const Timer = ({minutes, seconds}) => {
+  function pad(number) {
+    return number >= 10 ? `${number}` : `0${number}`;
+  }
+
+  return (
+    <div className="Timer">
+      <span className="Timer-number">{pad(minutes)}</span>
+      {" : "}
+      <span className="Timer-number">{pad(seconds)}</span>
+    </div>
+  );
+};
+
+export const CalorieScore = ({calories, diff, prevDiff}) => (
+  <Score value={calories} color={colorByDiff(diff, prevDiff)} suffix="kal"/>
+);
+
+export const DistanceScore = ({distance}) => <Score value={distance.toFixed(1)} suffix="km"/>;
+
+export const RpmScore = ({rpm}) => <Score value={rpm} suffix="rpm"/>;
+
+export const CpmScore = ({cpm}) => <Score value={cpm.toFixed(1)} suffix="kpm"/>;

my-bois/src/helpers/color.js

@@ -0,0 +1,14 @@
+
+export const COLOR_VERY_BAD = "#F66";
+export const COLOR_BAD = "#FBB";
+export const COLOR_NEUTRAL = "#FFF";
+export const COLOR_GOOD = "#BFB";
+export const COLOR_VERY_GOOD = "#6F6";
+
+export const colorByDiff = (diff, prevDiff) => {
+  if (diff < 0) {
+    return diff < prevDiff ? COLOR_VERY_BAD : COLOR_BAD;
+  } else {
+    return diff > prevDiff ? COLOR_VERY_GOOD : COLOR_GOOD;
+  }
+};

my-bois/src/helpers/diff.js

@@ -0,0 +1,25 @@
+export function diffString(diff) {
+  return diff < 0 ? `${diff}` : `+${diff}`
+}
+
+export default function calculateDiff(program, minutes, seconds, calories) {
+  const {warmupMin, warmupCpm, cpm} = program;
+
+  let preWarmup = 0;
+  if (warmupMin > 0) {
+    // Pre-warmup
+    const warmedUpMinutes = Math.min(minutes, warmupMin);
+    const warmedUpSeconds = minutes >= warmupMin ? 0 : seconds;
+    preWarmup = Math.round((warmupCpm * (warmedUpMinutes + (warmedUpSeconds / 60))));
+  }
+
+  // Post-warmup
+  const trainedMinutes = Math.max(0, minutes - warmupMin);
+  const trainedSeconds = minutes >= warmupMin ? seconds : 0;
+  const postWarmup = Math.round((cpm * (trainedMinutes + (trainedSeconds / 60))));
+
+  // Sum
+  const target = Math.round(preWarmup + postWarmup);
+
+  return calories - target;
+}

my-bois/src/hooks/milestones.js

@@ -0,0 +1,47 @@
+import {useReducer} from "react";
+import calculateDiff from "../helpers/diff";
+
+const DEFAULT = {
+  milestones: [],
+  prevDiff: 0,
+  prevLongDiff: 0,
+};
+
+function reducer(state, {type, payload}) {
+  switch (type) {
+    case "measure":
+      let {prevDiff, prevLongDiff, milestones} = state;
+      const {minutes, seconds, calories, program} = payload;
+
+      if (minutes === 0 || seconds !== 0) {
+        return state;
+      }
+
+      const isFive = minutes % 5 === 0;
+      const diff = calculateDiff(program, minutes, seconds, calories);
+      let newMilestones = milestones.filter(m => m.minutes !== minutes);
+      newMilestones.push({
+        minutes, seconds, calories, diff,
+        prevDiff: isFive ? prevDiff : prevLongDiff
+      });
+
+      if (isFive) {
+        newMilestones = newMilestones.filter(m => m.minutes % 5 === 0);
+        prevLongDiff = diff;
+      }
+      prevDiff = diff;
+
+      return {prevLongDiff, prevDiff, milestones: newMilestones};
+    case "clear":
+      return {...DEFAULT};
+    default:
+      throw new Error(`Unknown type: ${type}`)
+  }
+}
+
+export default function useMilestones() {
+  const [state, msDispatch] = useReducer(reducer, {...DEFAULT});
+  const {prevLongDiff, prevDiff, milestones} = state || {...DEFAULT};
+
+  return {milestones, prevDiff, prevLongDiff, msDispatch};
+}

my-bois/src/hooks/net.js

@@ -0,0 +1,58 @@
+export async function fetchBikes() {
+  return await get("/bike");
+}
+
+export async function fetchPrograms() {
+  return await get("/program");
+}
+
+export async function fetchActiveWorkouts() {
+  return await get("/workout?active=true");
+}
+
+export async function createNewWorkout(bike, program) {
+  const bikeId = bike.id;
+  const programId = program.id;
+
+  return await post("/workout", {bikeId, programId});
+}
+
+export async function connectWorkout(workout) {
+  return await post(`/workout/${workout.id}/connect`);
+}
+
+export async function stopWorkout(workout) {
+  return await post(`/workout/${workout.id}/stop`);
+}
+
+export async function startWorkout(workout) {
+  return await post(`/workout/${workout.id}/start`);
+}
+
+export async function pauseWorkout(workout) {
+  return await post(`/workout/${workout.id}/pause`);
+}
+
+export function openWebsocket(workout) {
+  return new WebSocket(url(`/workout/${workout.id}/subscribe`, "ws"));
+}
+
+function get(path) {
+  return fetch(url(path), {
+    method: "GET",
+  }).then(r => r.json());
+}
+
+function post(path, data = {}) {
+  return fetch(url(path), {
+    method: "POST",
+    headers: {
+      "Content-Type": "application/json",
+    },
+    body: JSON.stringify(data)
+  }).then(r => r.json());
+}
+
+function url(path, prefix = "http") {
+  return `${prefix}://127.0.0.1:9999/api${path}`;
+}

my-bois/src/hooks/useKey.js

@@ -0,0 +1,19 @@
+import {useEffect} from "react";
+
+export default function useKey(keyName, callback) {
+  useEffect(() => {
+    const handler = function (ev) {
+      if (ev.key === keyName) {
+        if (callback()) {
+          ev.preventDefault();
+        }
+      }
+    };
+
+    window.addEventListener("keydown", handler);
+
+    return () => {
+      window.removeEventListener("keydown", handler);
+    }
+  })
+}

my-bois/src/index.js

@@ -0,0 +1,11 @@
+import React from 'react';
+import ReactDOM from 'react-dom';
+import App from './App';
+import * as serviceWorker from './serviceWorker';
+
+ReactDOM.render(<App />, document.getElementById('root'));
+
+// If you want your app to work offline and load faster, you can change
+// unregister() to register() below. Note this comes with some pitfalls.
+// Learn more about service workers: https://bit.ly/CRA-PWA
+serviceWorker.unregister();

my-bois/src/serviceWorker.js

@@ -0,0 +1,135 @@
+// This optional code is used to register a service worker.
+// register() is not called by default.
+
+// 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 subsequent visits to a page, after all the
+// existing tabs open on the page have been closed, since previously cached
+// resources are updated in the background.
+
+// To learn more about the benefits of this model and instructions on how to
+// opt-in, read https://bit.ly/CRA-PWA
+
+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}$/
+    )
+);
+
+export function register(config) {
+  if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) {
+    // The URL constructor is available in all browsers that support SW.
+    const publicUrl = new URL(process.env.PUBLIC_URL, window.location.href);
+    if (publicUrl.origin !== window.location.origin) {
+      // Our service worker won't work if PUBLIC_URL is on a different origin
+      // from what our page is served on. This might happen if a CDN is used to
+      // serve assets; see https://github.com/facebook/create-react-app/issues/2374
+      return;
+    }
+
+    window.addEventListener('load', () => {
+      const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`;
+
+      if (isLocalhost) {
+        // This is running on localhost. Let's check if a service worker still exists or not.
+        checkValidServiceWorker(swUrl, config);
+
+        // 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://bit.ly/CRA-PWA'
+          );
+        });
+      } else {
+        // Is not localhost. Just register service worker
+        registerValidSW(swUrl, config);
+      }
+    });
+  }
+}
+
+function registerValidSW(swUrl, config) {
+  navigator.serviceWorker
+    .register(swUrl)
+    .then(registration => {
+      registration.onupdatefound = () => {
+        const installingWorker = registration.installing;
+        if (installingWorker == null) {
+          return;
+        }
+        installingWorker.onstatechange = () => {
+          if (installingWorker.state === 'installed') {
+            if (navigator.serviceWorker.controller) {
+              // At this point, the updated precached content has been fetched,
+              // but the previous service worker will still serve the older
+              // content until all client tabs are closed.
+              console.log(
+                'New content is available and will be used when all ' +
+                  'tabs for this page are closed. See https://bit.ly/CRA-PWA.'
+              );
+
+              // Execute callback
+              if (config && config.onUpdate) {
+                config.onUpdate(registration);
+              }
+            } 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.');
+
+              // Execute callback
+              if (config && config.onSuccess) {
+                config.onSuccess(registration);
+              }
+            }
+          }
+        };
+      };
+    })
+    .catch(error => {
+      console.error('Error during service worker registration:', error);
+    });
+}
+
+function checkValidServiceWorker(swUrl, config) {
+  // 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.
+      const contentType = response.headers.get('content-type');
+      if (
+        response.status === 404 ||
+        (contentType != null && contentType.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, config);
+      }
+    })
+    .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();
+    });
+  }
+}