Podpora easter eggů

server/.gitignore

@@ -3,4 +3,5 @@
 data.json
 .env.production
 .env.development
-.easter-eggs.json
+.easter-eggs.json
+/resources/easterEggs

server/src/index.ts

@@ -11,6 +11,7 @@ import { initWebsocket } from "./websocket";
 import pizzaDayRoutes from "./routes/pizzaDayRoutes";
 import foodRoutes from "./routes/foodRoutes";
 import votingRoutes from "./routes/votingRoutes";
+import easterEggRoutes from "./routes/easterEggRoutes";
 
 const ENVIRONMENT = process.env.NODE_ENV || 'production';
 dotenv.config({ path: path.resolve(__dirname, `./.env.${ENVIRONMENT}`) });
@@ -128,6 +129,7 @@ app.get("/api/data", async (req, res) => {
 app.use("/api/pizzaDay", pizzaDayRoutes);
 app.use("/api/food", foodRoutes);
 app.use("/api/voting", votingRoutes);
+app.use("/api/easterEggs", easterEggRoutes);
 app.use(express.static('public'))
 
 // Middleware pro zpracování chyb

server/src/routes/easterEggRoutes.ts

@@ -0,0 +1,156 @@
+import express, { NextFunction } from "express";
+import { getLogin, getTrusted } from "../auth";
+import { parseToken } from "../utils";
+import path from "path";
+import fs from "fs";
+import { EasterEgg } from "../../../types";
+
+const EASTER_EGGS_JSON_PATH = path.join(__dirname, "../../.easter-eggs.json");
+const IMAGES_PATH = '../../resources/easterEggs';
+
+type EasterEggsJson = {
+    [key: string]: EasterEgg[]
+}
+
+function generateUrl() {
+    let result = '';
+    const characters = 'abcdefghijklmnopqrstuvwxyz0123456789';
+    const charactersLength = characters.length;
+    let counter = 0;
+    while (counter < 32) {
+        result += characters.charAt(Math.floor(Math.random() * charactersLength));
+        counter += 1;
+    }
+    return result;
+}
+
+/**
+ * Vrátí náhodně jeden z definovaných easter egg obrázků pro přihlášeného uživatele.
+ * 
+ * @param req request
+ * @param res response
+ * @param next next
+ * @returns náhodný easter egg obrázek, nebo 404 pokud žádný není definován
+ */
+function getEasterEggImage(req: any, res: any, next: NextFunction) {
+    const login = getLogin(parseToken(req));
+    const trusted = getTrusted(parseToken(req));
+    try {
+        // TODO vrátit!
+        // if (trusted) {
+        if (true) {
+            if (login in easterEggs) {
+                const imagePath = easterEggs[login][Math.floor(Math.random() * easterEggs[login].length)].path;
+                res.sendFile(path.join(__dirname, IMAGES_PATH, imagePath));
+                return;
+            }
+        }
+        res.sendStatus(404);
+    } catch (e: any) { next(e) }
+}
+
+function getRandomPosition(startOffset: number, endOffset: number) {
+    const choice = Math.floor(Math.random() * 4);
+
+    if (choice === 0) {
+        // Vlevo nahoře
+        return {
+            left: `${startOffset}px`,
+            startLeft: `${startOffset}px`,
+            "--start-left": `${startOffset}px`,
+            top: `${startOffset}px`,
+            startTop: `${startOffset}px`,
+            "--start-top": `${startOffset}px`,
+            endLeft: `${endOffset}px`,
+            "--end-left": `${endOffset}px`,
+            endTop: `${endOffset}px`,
+            "--end-top": `${endOffset}px`,
+            rotate: '135deg',
+        }
+    } else if (choice === 1) {
+        // Vpravo nahoře
+        return {
+            right: `${startOffset}px`,
+            startRight: `${startOffset}px`,
+            "--start-right": `${startOffset}px`,
+            top: `${startOffset}px`,
+            startTop: `${startOffset}px`,
+            "--start-top": `${startOffset}px`,
+            endRight: `${endOffset}px`,
+            "--end-right": `${endOffset}px`,
+            endTop: `${endOffset}px`,
+            "--end-top": `${endOffset}px`,
+            rotate: '-135deg',
+        }
+    } else if (choice === 2) {
+        // Vpravo dole
+        return {
+            right: `${startOffset}px`,
+            startRight: `${startOffset}px`,
+            "--start-right": `${startOffset}px`,
+            bottom: `${startOffset}px`,
+            startBottom: `${startOffset}px`,
+            "--start-bottom": `${startOffset}px`,
+            endRight: `${endOffset}px`,
+            "--end-right": `${endOffset}px`,
+            endBottom: `${endOffset}px`,
+            "--end-bottom": `${endOffset}px`,
+            rotate: '-45deg',
+        }
+    } else if (choice === 3) {
+        // Vlevo dole
+        return {
+            left: `${startOffset}px`,
+            startLeft: `${startOffset}px`,
+            "--start-left": `${startOffset}px`,
+            bottom: `${startOffset}px`,
+            startBottom: `${startOffset}px`,
+            "--start-bottom": `${startOffset}px`,
+            endLeft: `${endOffset}px`,
+            "--end-left": `${endOffset}px`,
+            endBottom: `${endOffset}px`,
+            "--end-bottom": `${endOffset}px`,
+            rotate: '45deg',
+        }
+    }
+}
+
+const router = express.Router();
+
+let easterEggs: EasterEggsJson;
+
+// Registrace náhodných URL pro všechny existující easter eggy
+
+if (fs.existsSync(EASTER_EGGS_JSON_PATH)) {
+    const content = fs.readFileSync(EASTER_EGGS_JSON_PATH, 'utf-8');
+    easterEggs = JSON.parse(content);
+    for (const [key, eggs] of Object.entries(easterEggs)) {
+        for (const easterEgg of eggs) {
+            const url = generateUrl();
+            easterEgg.url = url;
+            router.get(`/${url}`, async (req, res, next) => {
+                return getEasterEggImage(req, res, next);
+            });
+        }
+    }
+}
+
+// Získání náhodného easter eggu pro přihlášeného uživatele
+router.get("/", async (req, res, next) => {
+    const login = getLogin(parseToken(req));
+    const trusted = getTrusted(parseToken(req));
+    try {
+        // TODO vrátit!
+        // if (trusted) {
+        if (true) {
+            if (easterEggs && login in easterEggs) {
+                const randomEasterEgg = easterEggs[login][Math.floor(Math.random() * easterEggs[login].length)];
+                const { path, startOffset, endOffset, ...strippedEasterEgg } = randomEasterEgg; // Path klient k ničemu nepotřebuje a nemá ho znát
+                return res.status(200).json({ ...strippedEasterEgg, ...getRandomPosition(startOffset, endOffset) });
+            }
+        }
+        return res.status(200).send();
+    } catch (e: any) { next(e) }
+});
+
+export default router;