feat: add support for setting group icons in BlueBubbles, enhancing group management capabilities

src/media/image-ops.ts

@@ -181,6 +181,19 @@ async function sipsResizeToJpeg(params: {
   });
 }
 
+async function sipsConvertToJpeg(buffer: Buffer): Promise<Buffer> {
+  return await withTempDir(async (dir) => {
+    const input = path.join(dir, "in.heic");
+    const output = path.join(dir, "out.jpg");
+    await fs.writeFile(input, buffer);
+    await runExec("/usr/bin/sips", ["-s", "format", "jpeg", input, "--out", output], {
+      timeoutMs: 20_000,
+      maxBuffer: 1024 * 1024,
+    });
+    return await fs.readFile(output);
+  });
+}
+
 export async function getImageMetadata(buffer: Buffer): Promise<ImageMetadata | null> {
   if (prefersSips()) {
     return await sipsMetadataFromBuffer(buffer).catch(() => null);
@@ -318,6 +331,14 @@ export async function resizeToJpeg(params: {
     .toBuffer();
 }
 
+export async function convertHeicToJpeg(buffer: Buffer): Promise<Buffer> {
+  if (prefersSips()) {
+    return await sipsConvertToJpeg(buffer);
+  }
+  const sharp = await loadSharp();
+  return await sharp(buffer).jpeg({ quality: 90, mozjpeg: true }).toBuffer();
+}
+
 /**
  * Internal sips-only EXIF normalization (no sharp fallback).
  * Used by resizeToJpeg to normalize before sips resize.

src/media/mime.ts

@@ -5,6 +5,8 @@ import { type MediaKind, mediaKindFromMime } from "./constants.js";
 
 // Map common mimes to preferred file extensions.
 const EXT_BY_MIME: Record<string, string> = {
+  "image/heic": ".heic",
+  "image/heif": ".heif",
   "image/jpeg": ".jpg",
   "image/png": ".png",
   "image/webp": ".webp",
@@ -137,6 +139,10 @@ export function imageMimeFromFormat(format?: string | null): string | undefined
     case "jpg":
     case "jpeg":
       return "image/jpeg";
+    case "heic":
+      return "image/heic";
+    case "heif":
+      return "image/heif";
     case "png":
       return "image/png";
     case "webp":