convert flacs to aac for streaming

src/app/admin/music/_components/ConvertToStreamButton.tsx

@@ -0,0 +1,100 @@
+'use client'
+
+import { useState } from "react";
+import { AudioLines, Loader2, RefreshCw } from "lucide-react";
+import { Button } from "~/components/ui/button";
+import { trpc } from "~/app/_trpc/Client";
+import { useUploadThing } from "~/lib/uploadthing";
+import { transcodeToAac } from "~/lib/ffmpeg/transcode";
+import { toast } from "sonner";
+import type { RouterOutputs } from "~/server/routers/_app";
+import type { IterableElement } from "type-fest";
+
+export default function ConvertToStreamButton(props: {
+	track: IterableElement<RouterOutputs['music']['list']>;
+}) {
+	const { track } = props;
+	const utils = trpc.useUtils();
+	const [busy, setBusy] = useState(false);
+	const [stage, setStage] = useState("");
+	const [progress, setProgress] = useState(0);
+
+	const setStream = trpc.music.setStream.useMutation({
+		onSuccess: () => utils.music.list.invalidate(),
+	});
+
+	const { startUpload } = useUploadThing("musicUploader");
+
+	async function handleConvert() {
+		setBusy(true);
+		setProgress(0);
+		let currentStage = "Loading ffmpeg";
+		const goto = (s: string) => {
+			currentStage = s;
+			setStage(s);
+		};
+		try {
+			goto("Transcoding");
+			const file = await transcodeToAac({
+				sourceUrl: track.fileUrl,
+				outputName: `${track.title || "track"}.m4a`,
+				onProgress: setProgress,
+			});
+
+			goto("Uploading");
+			const uploaded = await startUpload([file]);
+			const res = uploaded?.[0];
+			if (!res) throw new Error("Upload returned no file");
+
+			goto("Saving");
+			await setStream.mutateAsync({
+				id: track.id,
+				streamUrl: res.serverData.fileUrl,
+				streamKey: res.serverData.fileKey,
+				streamName: res.serverData.fileName,
+			});
+			toast("Streaming version saved");
+		} catch (e) {
+			console.error("[ConvertToStream] failed during", currentStage, e);
+			const detail =
+				e instanceof Error
+					? e.message
+					: typeof e === "string"
+						? e
+						: (() => {
+								try {
+									return JSON.stringify(e);
+								} catch {
+									return String(e);
+								}
+							})();
+			toast(`Conversion failed (${currentStage}): ${detail || "see console for details"}`);
+		} finally {
+			setBusy(false);
+			setStage("");
+			setProgress(0);
+		}
+	}
+
+	return (
+		<div className="flex items-center gap-2">
+			<Button type="button" variant="outline" size="sm" disabled={busy} onClick={handleConvert}>
+				{busy ? (
+					<Loader2 className="animate-spin" />
+				) : track.streamUrl ? (
+					<RefreshCw />
+				) : (
+					<AudioLines />
+				)}
+				{busy
+					? `${stage}${stage === "Transcoding" && progress ? ` ${Math.round(progress * 100)}%` : "…"}`
+					: track.streamUrl
+						? "Re-generate stream"
+						: "Generate stream (AAC)"}
+			</Button>
+			{track.streamUrl && !busy && (
+				<span className="text-xs text-muted-foreground">Streaming version ready</span>
+			)}
+		</div>
+	);
+}