Added initial group report pdf

src/utils/pdf.ts

@@ -0,0 +1,43 @@
+import qrcode from "qrcode";
+
+export const generateQRCode = async (link: string) => {
+  try {
+    const qrCodeDataURL = await qrcode.toDataURL(link);
+    return qrCodeDataURL;
+  } catch (error) {
+    console.error("Error generating QR code:", error);
+    return null;
+  }
+};
+
+// Radial Progress PNGs were generated with only two colors
+// and they use some baseline score (10%, 20%, 30%..)
+type RADIAL_PROGRESS_COLOR = "laranja" | "azul";
+
+export const getRadialProgressPNG = (
+  color: RADIAL_PROGRESS_COLOR,
+  score: number,
+  total: number
+) => {
+  // calculate the percentage of the score
+  // and round it to the closest available image
+  const percent = (score / total) * 100;
+  const remainder = percent % 10;
+  const roundedPercent = percent - remainder;
+  return `public/radial_progress/${color}_${roundedPercent}.png`;
+};
+
+export const streamToBuffer = async (
+    stream: NodeJS.ReadableStream
+  ): Promise<Buffer> => {
+    return new Promise((resolve, reject) => {
+      const chunks: Buffer[] = [];
+      stream.on("data", (data) => {
+        chunks.push(data);
+      });
+      stream.on("end", () => {
+        resolve(Buffer.concat(chunks));
+      });
+      stream.on("error", reject);
+    });
+  };