feat: ability to change logo in frontend

backend/src/config/logo.service.ts

@@ -0,0 +1,32 @@
+import { Injectable } from "@nestjs/common";
+import * as fs from "fs";
+import * as sharp from "sharp";
+
+const IMAGES_PATH = "../frontend/public/img";
+
+@Injectable()
+export class LogoService {
+  async create(file: Buffer) {
+    fs.writeFileSync(`${IMAGES_PATH}/logo.png`, file, "binary");
+    this.createFavicon(file);
+    this.createPWAIcons(file);
+  }
+
+  async createFavicon(file: Buffer) {
+    const resized = await sharp(file).resize(16).toBuffer();
+    fs.promises.writeFile(`${IMAGES_PATH}/favicon.ico`, resized, "binary");
+  }
+
+  async createPWAIcons(file: Buffer) {
+    const sizes = [72, 96, 128, 144, 152, 192, 384, 512];
+
+    for (const size of sizes) {
+      const resized = await sharp(file).resize(size).toBuffer();
+      fs.promises.writeFile(
+        `${IMAGES_PATH}/icons/icon-${size}x${size}.png`,
+        resized,
+        "binary"
+      );
+    }
+  }
+}