Initial commit

src/PartyContext.tsx

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+import React, { createContext, useCallback, useEffect, useMemo, useState } from 'react';
+import { getPartyStatusRequest, getSelfStatusRequest, parseURI } from './partyApi';
+import './PartyPage.css';
+
+export const PartyContext = createContext<PartyContextType>({
+    party: { definitely_coming: 0, maybe_coming: 0 },
+    self: { token: "", name: "", coming: "yes", grammatical_gender: "m" }
+});
+
+export type PartyContextType = {
+    party: PartyStatus,
+    self: SelfStatus,
+}
+
+export type PartyStatus = {
+    "definitely_coming": number,
+    "maybe_coming": number,
+}
+
+export type SelfStatus = {
+    token: string,
+    name: string,
+    coming: "yes" | "no" | "maybe" | null,
+    "grammatical_gender": "m" | "f" | "d",
+    extra?: SelfStatusExtraData,
+}
+
+export type UpdatableSelfStatus = {
+    coming?: "yes" | "no" | "maybe" | null,
+    extra?: SelfStatusExtraData,
+}
+
+export type APIEndPoint = { partyName: string, token: string };
+
+// Adapt this type to your desires
+export type SelfStatusExtraData = {
+};
+
+export const PartyContextProvider: React.FC<{ children: React.ReactNode }> = (props) => {
+
+    const [partyContext, setPartyContext] = useState<PartyContextType>();
+
+    const apiEndpoint = useMemo<APIEndPoint>(() => {
+        // eslint-disable-next-line no-restricted-globals
+        const href = location.href;
+        const p = parseURI(href);
+        if (!p) return { partyName: "error", token: "" }
+        return p;
+    }, []);
+
+    const loadData = useCallback(async () => {
+        if (partyContext !== undefined) return;
+        const selfStatus = await getSelfStatusRequest(apiEndpoint);
+        const partyStatus = await getPartyStatusRequest(apiEndpoint);
+        const ctx = { party: partyStatus, self: selfStatus };
+        setPartyContext(ctx);
+    }, [apiEndpoint, partyContext]);
+
+    useEffect(() => {
+        loadData();
+    }, [apiEndpoint, loadData]);
+
+    return partyContext ?
+        <PartyContext.Provider value={partyContext}>
+            {props.children}
+        </PartyContext.Provider>
+        : <div className="loading" />;
+};

src/PartyPage.css

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+.loading {
+    height: 100vh;
+    width: 100vw;
+    background-color: black;
+}
+
+.App {
+  text-align: center;
+}
+
+.App-logo {
+  height: 40vmin;
+  pointer-events: none;
+}
+
+@media (prefers-reduced-motion: no-preference) {
+  .App-logo {
+    animation: App-logo-spin infinite 20s linear;
+  }
+}
+
+.App-header {
+  background-color: #282c34;
+  min-height: 100vh;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  font-size: calc(10px + 2vmin);
+  color: white;
+}
+
+.App-link {
+  color: #61dafb;
+}
+
+@keyframes App-logo-spin {
+  from {
+    transform: rotate(0deg);
+  }
+  to {
+    transform: rotate(360deg);
+  }
+}

src/PartyPage.tsx

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+
+import React, { useContext } from 'react';
+import logo from './logo.svg';
+import './PartyPage.css';
+import { PartyContext } from './PartyContext';
+
+export const PartyPage: React.FC = () => {
+    const partyContext = useContext(PartyContext);
+    
+    return <div className="App" >
+        <header className="App-header" >
+            <img src={logo} className="App-logo" alt="logo" />
+            <p>
+                Edit <code> src/PartyPage.tsx </code> and save to reload.
+            </p>
+            <a
+                className="App-link"
+                href="https://reactjs.org"
+                target="_blank"
+                rel="noopener noreferrer"
+            >
+                Learn React
+            </a>
+            <span>Hello {partyContext.self.name}</span>
+        </header>
+    </div>
+};

src/index.css

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+body {
+  margin: 0;
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
+    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
+    sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+code {
+  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
+    monospace;
+}

src/index.tsx

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+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import './index.css';
+import { PartyContextProvider } from './PartyContext';
+import { PartyPage } from './PartyPage';
+
+const root = ReactDOM.createRoot(
+  document.getElementById('root') as HTMLElement
+);
+root.render(
+  <React.StrictMode>
+    <PartyContextProvider>
+      <PartyPage />
+    </PartyContextProvider>
+  </React.StrictMode>
+);

src/logo.svg

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+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 841.9 595.3"><g fill="#61DAFB"><path d="M666.3 296.5c0-32.5-40.7-63.3-103.1-82.4 14.4-63.6 8-114.2-20.2-130.4-6.5-3.8-14.1-5.6-22.4-5.6v22.3c4.6 0 8.3.9 11.4 2.6 13.6 7.8 19.5 37.5 14.9 75.7-1.1 9.4-2.9 19.3-5.1 29.4-19.6-4.8-41-8.5-63.5-10.9-13.5-18.5-27.5-35.3-41.6-50 32.6-30.3 63.2-46.9 84-46.9V78c-27.5 0-63.5 19.6-99.9 53.6-36.4-33.8-72.4-53.2-99.9-53.2v22.3c20.7 0 51.4 16.5 84 46.6-14 14.7-28 31.4-41.3 49.9-22.6 2.4-44 6.1-63.6 11-2.3-10-4-19.7-5.2-29-4.7-38.2 1.1-67.9 14.6-75.8 3-1.8 6.9-2.6 11.5-2.6V78.5c-8.4 0-16 1.8-22.6 5.6-28.1 16.2-34.4 66.7-19.9 130.1-62.2 19.2-102.7 49.9-102.7 82.3 0 32.5 40.7 63.3 103.1 82.4-14.4 63.6-8 114.2 20.2 130.4 6.5 3.8 14.1 5.6 22.5 5.6 27.5 0 63.5-19.6 99.9-53.6 36.4 33.8 72.4 53.2 99.9 53.2 8.4 0 16-1.8 22.6-5.6 28.1-16.2 34.4-66.7 19.9-130.1 62-19.1 102.5-49.9 102.5-82.3zm-130.2-66.7c-3.7 12.9-8.3 26.2-13.5 39.5-4.1-8-8.4-16-13.1-24-4.6-8-9.5-15.8-14.4-23.4 14.2 2.1 27.9 4.7 41 7.9zm-45.8 106.5c-7.8 13.5-15.8 26.3-24.1 38.2-14.9 1.3-30 2-45.2 2-15.1 0-30.2-.7-45-1.9-8.3-11.9-16.4-24.6-24.2-38-7.6-13.1-14.5-26.4-20.8-39.8 6.2-13.4 13.2-26.8 20.7-39.9 7.8-13.5 15.8-26.3 24.1-38.2 14.9-1.3 30-2 45.2-2 15.1 0 30.2.7 45 1.9 8.3 11.9 16.4 24.6 24.2 38 7.6 13.1 14.5 26.4 20.8 39.8-6.3 13.4-13.2 26.8-20.7 39.9zm32.3-13c5.4 13.4 10 26.8 13.8 39.8-13.1 3.2-26.9 5.9-41.2 8 4.9-7.7 9.8-15.6 14.4-23.7 4.6-8 8.9-16.1 13-24.1zM421.2 430c-9.3-9.6-18.6-20.3-27.8-32 9 .4 18.2.7 27.5.7 9.4 0 18.7-.2 27.8-.7-9 11.7-18.3 22.4-27.5 32zm-74.4-58.9c-14.2-2.1-27.9-4.7-41-7.9 3.7-12.9 8.3-26.2 13.5-39.5 4.1 8 8.4 16 13.1 24 4.7 8 9.5 15.8 14.4 23.4zM420.7 163c9.3 9.6 18.6 20.3 27.8 32-9-.4-18.2-.7-27.5-.7-9.4 0-18.7.2-27.8.7 9-11.7 18.3-22.4 27.5-32zm-74 58.9c-4.9 7.7-9.8 15.6-14.4 23.7-4.6 8-8.9 16-13 24-5.4-13.4-10-26.8-13.8-39.8 13.1-3.1 26.9-5.8 41.2-7.9zm-90.5 125.2c-35.4-15.1-58.3-34.9-58.3-50.6 0-15.7 22.9-35.6 58.3-50.6 8.6-3.7 18-7 27.7-10.1 5.7 19.6 13.2 40 22.5 60.9-9.2 20.8-16.6 41.1-22.2 60.6-9.9-3.1-19.3-6.5-28-10.2zM310 490c-13.6-7.8-19.5-37.5-14.9-75.7 1.1-9.4 2.9-19.3 5.1-29.4 19.6 4.8 41 8.5 63.5 10.9 13.5 18.5 27.5 35.3 41.6 50-32.6 30.3-63.2 46.9-84 46.9-4.5-.1-8.3-1-11.3-2.7zm237.2-76.2c4.7 38.2-1.1 67.9-14.6 75.8-3 1.8-6.9 2.6-11.5 2.6-20.7 0-51.4-16.5-84-46.6 14-14.7 28-31.4 41.3-49.9 22.6-2.4 44-6.1 63.6-11 2.3 10.1 4.1 19.8 5.2 29.1zm38.5-66.7c-8.6 3.7-18 7-27.7 10.1-5.7-19.6-13.2-40-22.5-60.9 9.2-20.8 16.6-41.1 22.2-60.6 9.9 3.1 19.3 6.5 28.1 10.2 35.4 15.1 58.3 34.9 58.3 50.6-.1 15.7-23 35.6-58.4 50.6zM320.8 78.4z"/><circle cx="420.9" cy="296.5" r="45.7"/><path d="M520.5 78.1z"/></g></svg>

src/partyApi.ts

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+import { APIEndPoint, PartyStatus, SelfStatus, UpdatableSelfStatus } from "./PartyContext";
+
+let debugMode = false;
+
+export const enableDebugMode = () => {
+    debugMode = true;
+};
+
+export const parseURI = (uri: string): APIEndPoint | undefined => {
+    const x = uri.match(/https?:\/\/(?<partyName>\w+)\.(?<host>.+)\/(?<token>.+)/);
+    if (x === null || x.groups === undefined) return;
+    const partyName = x.groups["partyName"];
+    const token = x.groups["token"];
+    if (!partyName || !token) return;
+    return { partyName, token };
+};
+
+const apiUrl = (apiEndPoint: APIEndPoint): string => {
+    return `https://party.leafbla.de/api/${apiEndPoint.partyName}/${apiEndPoint.token}`;
+};
+
+export const getSelfStatusRequest = async (apiEndpoint: APIEndPoint): Promise<SelfStatus> => {
+    if (debugMode) return debugData["me"];
+    const result = await fetch(`${apiUrl(apiEndpoint)}/me`);
+    if (!result.ok) throw new Error("Error sending getSelfRequest");
+    const data = await result.json();
+    return data as SelfStatus;
+};
+
+export const getPartyStatusRequest = async (apiEndpoint: APIEndPoint): Promise<PartyStatus> => {
+    if (debugMode) return debugData["status"];
+    const result = await fetch(`${apiUrl(apiEndpoint)}/status`);
+    if (!result.ok) throw new Error("Error sending getPartyRequest");
+    const data = await result.json();
+    return data as PartyStatus;
+};
+
+export const modifySelfRequest = async (apiEndpoint: APIEndPoint, payload: UpdatableSelfStatus): Promise<SelfStatus> => {
+    if (debugMode) return debugData["me"];
+    const result = await fetch(`${apiUrl(apiEndpoint)}/me`, { method: "PATCH", body: JSON.stringify(payload), headers: { "Content-Type": "application/json" } });
+    if (!result.ok) throw new Error("Error sending modifySelfRequest");
+    const data = await result.json();
+    return data as SelfStatus;
+};
+
+const debugData: { me: SelfStatus, status: PartyStatus } = {
+    me: {
+        coming: "maybe",
+        grammatical_gender: "f",
+        name: "Test user",
+        token: "testusertoken",
+        extra: {},
+    },
+    status: {
+        definitely_coming: 10,
+        maybe_coming: 5,
+    }
+};

src/react-app-env.d.ts

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+/// <reference types="react-scripts" />

src/reportWebVitals.ts

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+import { ReportHandler } from 'web-vitals';
+
+const reportWebVitals = (onPerfEntry?: ReportHandler) => {
+  if (onPerfEntry && onPerfEntry instanceof Function) {
+    import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
+      getCLS(onPerfEntry);
+      getFID(onPerfEntry);
+      getFCP(onPerfEntry);
+      getLCP(onPerfEntry);
+      getTTFB(onPerfEntry);
+    });
+  }
+};
+
+export default reportWebVitals;

src/setupTests.ts

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+// jest-dom adds custom jest matchers for asserting on DOM nodes.
+// allows you to do things like:
+// expect(element).toHaveTextContent(/react/i)
+// learn more: https://github.com/testing-library/jest-dom
+import '@testing-library/jest-dom';