Migrated admin and media APIs to Nitro

server/utils/audio-files.ts

@@ -0,0 +1,47 @@
+import { unlink } from "node:fs/promises"
+import path from "node:path"
+import Ffmpeg from "fluent-ffmpeg"
+import type { H3Event } from "h3"
+import { resolveUploadFile } from "./upload-files"
+
+export async function getAudioDuration(event: H3Event, relativePath: string): Promise<number> {
+	if (!relativePath) throw new Error("filePath is undefined")
+	const { path: sourcePath } = await resolveUploadFile(event, relativePath)
+	return new Promise((resolve, reject) => {
+		Ffmpeg.ffprobe(sourcePath, (error, metadata) => {
+			if (error) return reject(0)
+			if (metadata.format.duration) return resolve(metadata.format.duration)
+			reject(0)
+		})
+	})
+}
+
+export async function processAudioFile(event: H3Event, relativePath: string) {
+	if (!relativePath) throw new Error("filePath is undefined")
+	const { path: sourcePath } = await resolveUploadFile(event, relativePath)
+	const directory = path.dirname(sourcePath)
+	const jobs: Array<[string, string, string]> = [
+		["128k", "mp3", "libmp3lame"],
+		["256k", "mp3", "libmp3lame"],
+		["96k", "mp4", "aac"],
+		["192k", "mp4", "aac"],
+		["320k", "mp4", "aac"],
+	]
+	const names = ["low.mp3", "mid.mp3", "low.m4a", "mid.m4a", "high.m4a"]
+
+	await Promise.all(
+		jobs.map(([bitrate, format, codec], index) =>
+			new Promise<void>((resolve, reject) => {
+				Ffmpeg(sourcePath)
+					.noVideo()
+					.audioBitrate(bitrate)
+					.toFormat(format)
+					.audioCodec(codec)
+					.on("end", () => resolve())
+					.on("error", reject)
+					.save(path.join(directory, names[index]!))
+			}),
+		),
+	)
+	await unlink(sourcePath)
+}