webapp/src/App.css

@@ -16,7 +16,3 @@
 .App-link {
   color: #61dafb;
 }
-
-.Container {
-  margin-top: 25px;
-}

webapp/src/App.js

@@ -1,31 +1,47 @@
 import './App.css';
-import React from 'react'
+import React, { useState, useEffect, useCallback } from 'react';
 import {
   BrowserRouter,
   Routes,
   Route,
-} from "react-router-dom"
+} from "react-router-dom";
 
-import Header from "./components/Header"
-import Leaderboard from "./components/Leaderboard"
-import GameProposal from "./components/GameProposal"
-import DataPolling from './components/DataPolling';
-
-//import { UserProvider } from "../contexts/UserProvider"
-//import { GameProposalProvider } from './context/GameProposal';
+import Header from "./Header"
+import Leaderboard from "./Leaderboard";
+import GameProposal from "./GameProposal";
 
 function App() { 
+  const [games, setGames] = useState(null);
+  const [polling, setPolling] = useState(false);
+
+  const pollGames = useCallback(() => {     
+    if (polling)
+      return;
+
+    setPolling(true);
+    fetch('/api/gamestate')
+      .then(response => response.json())
+      .then(data => {
+        setGames(data);
+        setPolling(false);
+      })
+      .catch(err => console.log(err.message));
+  }, [polling]);
+
+  useEffect(() => {
+    const timer = setInterval(pollGames(), 35 * 1000); // <<-- poll new gamestates every 35 sec
+    return clearInterval(timer);
+  }, [pollGames])
 
   return <div className="App">
     <BrowserRouter>
-        <Header/>
-        <DataPolling/>
-        <div className="Container">
-          <Routes>
-            <Route path="/leaderboard" element={<Leaderboard/>} />
-              <Route path="/gameproposal" element={<GameProposal/>} />
-          </Routes>
-        </div>
+      <Header/>
+      <div className="Container">
+        <Routes>
+          <Route path="/leaderboard" element={<Leaderboard/>} />
+          <Route path="/gameproposal" element={<GameProposal games={games}/>} />
+        </Routes>
+      </div>
     </BrowserRouter>
     </div>
 }

webapp/src/GameProposal.css

@@ -42,6 +42,6 @@
 }
 
 .stone {
-    font-size: 140%;
+    font-size: 160%;
     vertical-align: -3px;
 }

webapp/src/GameProposal.js

@@ -1,25 +1,24 @@
-import './index.css';
 import React from 'react';
-import {Accept} from './GameProposalAction';
-import Reject from './Reject'
-import Cancel from './GameProposalCancel'
+import {Accept, Reject, Cancel} from './GameProposalAction';
+import './GameProposal.css';
 
-import { AppData } from "../../context/data"
+const State = {
+	WaitForOpponent: "GAME_PROPOSAL_WAIT_FOR_OPPONENT",
+	WaitForYou:      "GAME_PROPOSAL_WAIT_FOR_YOU",
+}
 
+const GameProposal = ({games}) => {
 
-export default function GameProposal() {
-  const [data] = React.useContext(AppData)
+  if (games == null)
+    return <p>Loading..</p>
 
-  if (data.games == null)
-    return <div>Loading..</div>
-
-  // for (const [key, value] of Object.entries(data.games))
+  // for (const [key, value] of Object.entries(games))
   //   console.log(key, value);
    
-  const waitForYou = data.games
-    .filter(game => game.status === Status.WaitForYou)
+  const waitForYou = games
+    .filter(game => game.status === State.WaitForYou)
     .map(game => { 
-      return <div className="li" key={game.uuid}>
+      return <div class="li" key={game.uuid}>
         <p>
           You {Stone(game.myColor)} <i>vs</i> {game.opponentName} {Stone(oppositeColor(game.myColor))}
           <br/>
@@ -31,10 +30,10 @@ export default function GameProposal() {
         </div>
     });
 
-  const WaitForOpponent = data.games
-    .filter(game => game.status === Status.WaitForOpponent)
+  const WaitForOpponent = games
+    .filter(game => game.status === State.WaitForOpponent)
     .map(game => { 
-      return <div className="li" key={game.uuid}>
+      return <div class="li" key={game.uuid}>
         <p> 
           You {Stone(game.myColor)} <i>vs</i> {game.opponentName} {Stone(oppositeColor(game.myColor))}
           <br/>
@@ -48,7 +47,7 @@ export default function GameProposal() {
   return <div className="GameProposal">
     {waitForYou}
     {WaitForOpponent.length > 0 && 
-      <div className="separator">
+      <div class="separator">
         waiting for opponent ({WaitForOpponent.length})
       </div>
     }
@@ -56,21 +55,14 @@ export default function GameProposal() {
     </div>
 };
 
-
-
-const Status = {
-	WaitForOpponent: "GAME_PROPOSAL_WAIT_FOR_OPPONENT",
-	WaitForYou:      "GAME_PROPOSAL_WAIT_FOR_YOU",
-}
-
 function Stone(color) {
   if (color === "WHITE")
-    return <span className="stone">⛀</span>
+    return <span class="stone">⛀</span>
 
   if (color === "BLACK")
-    return <span className="stone">⛂</span>
+    return <span class="stone">⛂</span>
 
-  return <span className="stone">{color}</span>
+  return <span class="stone">{color}</span>
 }
 
 function oppositeColor(color) {
@@ -82,3 +74,5 @@ function oppositeColor(color) {
 
   return color
 }
+
+export default GameProposal;

webapp/src/GameProposalAction.js

@@ -6,11 +6,11 @@ export function Accept({uuid}) {
         </button>
 }
 
-// export function Reject({uuid}) {
-//     return <button className="action" id={uuid} type="submit" >
-//         Reject
-//         </button>
-// }
+export function Reject({uuid}) {
+    return <button className="action" id={uuid} type="submit">
+        Reject
+        </button>
+}
 
 export function Cancel({uuid}) {
     return <button className="action" id={uuid} type="submit">

webapp/src/Header.js

@@ -0,0 +1,17 @@
+import { Link } from "react-router-dom";
+import './Header.css';
+
+export default function Header() {
+    return (
+      <p>
+        <h1>CordaCheckers</h1>
+        <nav>
+          <Link to="/leaderboard">Leaderboard</Link> {"| "}
+          <Link to="/gameproposal">Game Proposal</Link> {"| "}
+          <Link to="/game">Active Games</Link> {"| "}
+          <Link to="/archive">Archive</Link> {"| "}
+          <Link to="about">About</Link>
+        </nav>
+      </p>
+    );
+  }

webapp/src/Leaderboard.js

@@ -1,11 +1,22 @@
-import React from "react"
-import './index.css';
-import { AppData } from "../../context/data"
+import React, { useState, useEffect } from 'react';
+import './Leaderboard.css';
 
-export default function Leaderboard() {
-  const [data] = React.useContext(AppData)
+const Leaderboard = () => {
 
-  if (data.leaderboard == null) 
+  const [data, setData] = useState(null);
+
+  useEffect(() => {
+    fetch('/api/leaderboard')
+      .then((response) => response.json())
+      .then((data) => {
+        setData(data);
+      })
+      .catch((err) => {
+        console.log(err.message);
+      });
+  }, []);
+
+  if (data == null) 
     return <p>Loading...</p>
 
 //  var listItems = Object.keys(data).map(playerName => {
@@ -17,8 +28,8 @@ export default function Leaderboard() {
 //  });
 //  return <ul>{listItems}</ul>;
 
-  const tableRows = Object.keys(data.leaderboard).map(playerName => {
-    var rank = data.leaderboard[playerName];
+  const tableRows = Object.keys(data).map(playerName => {
+    var rank = data[playerName];
 
     return <tr key={playerName}>
       <td>{playerName}</td>
@@ -44,3 +55,5 @@ export default function Leaderboard() {
     </table>
     </div>
 };
+
+export default Leaderboard;

webapp/src/components/DataPolling/index.jsx

@@ -1,16 +0,0 @@
-import React from "react"
-import { AppData } from "../../context/data"
-import { AppContext } from "../../context/app"
-
-export default function DataPolling() {
-    const [appData] = React.useContext(AppData)
-    const [appCtx, dispatchAppData] = React.useContext(AppContext)
-
-    return <div className={DataPolling.name}>
-        polling
-        <button onClick={() => dispatchAppData({type: "togglePolling"})}>
-            { appCtx.disablePolling === true ? "off" : "on" }
-        </button>
-        { appData.fetching }
-        </div>
-}

webapp/src/components/GameProposal/GameProposalCancel.js

@@ -1,24 +0,0 @@
-import React, {useState} from 'react';
-
-export default function Cancel({uuid}) {
-    const [pending, setPending] = useState(new Map())
-
-    for (const [key, value] of pending)
-        console.log("cancel", key, value);
-
-    function sendRequest(uuid2reject) {
-        const nextPending = new Map(pending)
-        nextPending.set(uuid2reject, null)
-
-        setPending(nextPending)
-    }
-
-    const status = pending.get(uuid)
-    const isPending = status !== undefined
-
-    return <button 
-        className={isPending ? "visible" : "action"} 
-        onClick={() => sendRequest(uuid) }>
-            Cancel
-        </button>
-}

webapp/src/components/GameProposal/Reject.jsx

@@ -1,21 +0,0 @@
-import React, {useState} from 'react';
-
-export default function Reject({uuid}) {
-    const [pending, setPending] = useState([])
-
-    for (const [key, value] of Object.entries(pending))
-        console.log("pending ", key, value);
-
-    function sendRequest(reject_uuid) {
-        setPending(             // Replace the old array
-            [                   // with a new array consisting of:
-                ...pending,     // - all the old items
-                { uuid: reject_uuid }  // - and a new item at the end
-            ]
-        )
-    }
-
-    return <button className="action" onClick={() => sendRequest(uuid) }>
-        Reject
-        </button>
-}

webapp/src/components/Header/index.jsx

@@ -1,17 +0,0 @@
-import './index.css';
-import React from "react"
-import { Link } from "react-router-dom";
-
-export default function Header() {
-
-  return <div>
-    <h1>CordaCheckers</h1>
-    <nav>
-      <Link to="/leaderboard">Leaderboard</Link> {"| "}
-      <Link to="/gameproposal">Game Proposal</Link> {"| "}
-      <Link to="/game">Active Games</Link> {"| "}
-      <Link to="/archive">Archive</Link> {"| "}
-      <Link to="about">About</Link>
-    </nav>
-    </div>
-}

webapp/src/context/app/index.jsx

@@ -1,17 +0,0 @@
-import React from "react"
-import { reducer, initialState } from "./reducer"
-
-export const AppContext = React.createContext({
-  state: initialState,
-  dispatch: () => null
-})
-
-export const AppContextProvider = ({ children }) => {
-  const [state, dispatch] = React.useReducer(reducer, initialState)
-
-  return (
-    <AppContext.Provider value={[ state, dispatch ]}>
-    	{ children }
-    </AppContext.Provider>
-  )
-}

webapp/src/context/app/reducer.js

@@ -1,16 +0,0 @@
-export const reducer = (state, action) => {
-  switch (action.type) {
-
-    case "togglePolling":
-      return { ...state,
-        disablePolling: !state.disablePolling // on/off
-      }
-
-    default:
-      return state
-  }
-}
-
-export const initialState = {
-  disablePolling: false,
-}

webapp/src/context/data/Poll.js

@@ -1,40 +0,0 @@
-import { useState, useCallback, useEffect,  } from "react"
-
-export default function Poll(url, interval_sec, disabled) {
-    const [cache, setCache] = useState(null)
-    const [fetching, setFetching] = useState(false)
-    const [timeoutID, setTimeoutID] = useState(null)
-
-    const fecthData = useCallback(() => {
-        setTimeoutID(null)
-        setFetching(true)
-
-        fetch(url)
-            .then((response) => {
-                setFetching(false)
-                return response.json()
-            })
-            .then((freshData) => setCache(freshData))
-            .catch((err) => console.log(err.message))
-    }, [url])
-
-    useEffect(() => {
-        if (cache == null) {
-            fecthData()  // <<-- run immediatly on startup
-        }
-        else if (disabled === true) {
-            clearTimeout(timeoutID) // cancel already scheduled fetch
-            setTimeoutID(null)
-        }
-        else if (timeoutID === null) {
-            const timeoutID = setTimeout(fecthData, interval_sec * 1000)
-            setTimeoutID(timeoutID)
-            console.log("Fetch '" +url +"' scheduled in " +interval_sec +" sec")
-        }
-    }, [url, cache, fecthData, timeoutID, disabled, interval_sec]);
-
-    return {
-        data: cache,
-        fetching
-    }
-}

webapp/src/context/data/index.jsx

@@ -1,36 +0,0 @@
-import React from "react"
-import { reducer, initialState } from "./reducer"
-import { AppContext } from "../app"
-
-import Poll from "./Poll"
-
-export const AppData = React.createContext({
-  state: initialState,
-  dispatch: () => null
-})
-
-export const AppDataProvider = ({ children }) => {
-
-  const [data, dispatchData] = React.useReducer(reducer, initialState)
-  const [appContext] = React.useContext(AppContext)
-
-  const games = Poll('api/gamestate', 30, appContext.disablePolling)
-  const leaderboard = Poll('api/leaderboard', 60, appContext.disablePolling)
-  
-  data.games       = games.data
-  data.leaderboard = leaderboard.data
-  
-  var fetching = []
-  if (games.fetching === true)
-    fetching =  [...fetching, "games"]
-  if (leaderboard.fetching === true)
-    fetching =  [...fetching, "leaderboard"]
-  
-  data.fetching = fetching
-  
-  return (
-    <AppData.Provider value={[data, dispatchData]}>
-      {children}
-    </AppData.Provider>
-  )
-}

webapp/src/context/data/reducer.js

@@ -1,14 +0,0 @@
-export const reducer = (state, action) => {
-  switch (action.type) {
-
-    default:
-      console.warn("Unknown action.type", action)
-      return state
-  }
-}
-  
-export const initialState = { 
-  games: null,
-  leaderboard: null,
-  fetching: []
-}

webapp/src/index.js

@@ -1,21 +1,14 @@
 import React from 'react';
 import ReactDOM from 'react-dom/client';
 import './index.css';
-import reportWebVitals from './reportWebVitals';
 import App from './App';
-import { AppDataProvider } from "./context/data"
-import { AppContextProvider } from "./context/app"
+import reportWebVitals from './reportWebVitals';
 
 const root = ReactDOM.createRoot(document.getElementById('root'));
 root.render(
-
-  //<React.StrictMode>
-  <AppContextProvider>
-    <AppDataProvider>
-      <App />
-    </AppDataProvider>
-  </AppContextProvider>
-  //</React.StrictMode>
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>
 );
 
 // If you want to start measuring performance in your app, pass a function