Add in HEIC converter on uploaded images.

util/heicConverter.ts

@@ -0,0 +1,77 @@
+import { Request, Response } from "express";
+import multer from "multer";
+
+import GenerateThumbnail from "../util/generateThumbnail";
+import generateUniqueFilename from "../util/generateUniqueFilename";
+import { PathToRoFolder } from "../util/pathGenerators";
+
+import fs from "fs-extra";
+
+import { access } from "fs/promises";
+import imageThumbnail from "image-thumbnail";
+import path, { resolve } from "path";
+import gm from "gm";
+import ft from "file-type";
+import core from "file-type/core";
+import GenerateUrl from "./MediaUrlGen";
+import { FolderPaths } from "./serverInit";
+import { logger } from "../server";
+import dotenv from "dotenv";
+
+const heicConverter = require("heic-convert");
+
+//gm.subClass();
+dotenv.config({
+  path: resolve(process.cwd(), `.env.${process.env.NODE_ENV || "development"}`),
+});
+
+export async function ConvertHeicFiles(files: Express.Multer.File[]) {
+  for (const file of files) {
+    const type: core.FileTypeResult | undefined = await ft.fromFile(file.path);
+    if (type?.mime === "image/heic") {
+      logger.log(
+        "debug",
+        `Converting ${file.filename} image to JPEG from HEIC.`
+      );
+      const convertedFileName = `${
+        path.parse(path.basename(file.originalname)).name
+      }-${Math.floor(Date.now() / 1000)}.jpeg`;
+
+      await ConvertToJpeg(
+        file.path,
+        `${file.destination}/${convertedFileName}`
+      );
+      //Move the HEIC.
+      if (process.env.KEEP_CONVERTED_ORIGINALS) {
+        await fs.ensureDir(
+          path.join(file.destination, FolderPaths.ConvertedOriginalSubDir)
+        );
+        await fs.move(
+          file.path,
+          `${path.join(
+            file.destination,
+            FolderPaths.ConvertedOriginalSubDir
+          )}/${file.filename}`
+        );
+      } else {
+        await fs.unlink(file.destination);
+      }
+      //Update the multer file entry.
+
+      file.filename = convertedFileName;
+      file.mimetype = "image/jpeg";
+      file.path = `${file.destination}/${convertedFileName}`;
+    }
+  }
+}
+
+async function ConvertToJpeg(file: string, newPath: string) {
+  const fileOnDisk: Buffer = await fs.readFile(file);
+
+  const outputBuffer = await heicConverter({
+    buffer: fileOnDisk, // the HEIC file buffer
+    format: "JPEG", // output format
+    quality: process.env.CONVERT_QUALITY || 0.5, // the jpeg compression quality, between 0 and 1
+  });
+  return await fs.writeFile(newPath, outputBuffer);
+}