import {callFf} from './call-ffmpeg';
import type {LogLevel} from './log-level';
import type {CancelSignal} from './make-cancel-signal';

export const guessExtensionForVideo = async ({
	src,
	indent,
	logLevel,
	binariesDirectory,
	cancelSignal,
}: {
	src: string;
	indent: boolean;
	logLevel: LogLevel;
	binariesDirectory: string | null;
	cancelSignal: CancelSignal | undefined;
}) => {
	const {stderr} = await callFf({
		bin: 'ffprobe',
		args: [src],
		indent,
		logLevel,
		binariesDirectory,
		cancelSignal,
	});
	if (stderr.includes('Audio: mp3,')) {
		return 'mp3';
	}

	if (stderr.includes('Video: vp9')) {
		return 'webm';
	}

	if (stderr.includes('Video: vp8')) {
		return 'webm';
	}

	if (stderr.includes('wav, ')) {
		return 'wav';
	}

	if (stderr.includes('Video: h264')) {
		return 'mp4';
	}

	throw new Error(
		`The media file "${src}" has no file extension and the format could not be guessed. Tips: a) Ensure this is a valid video or audio file b) Add a file extension to the URL like ".mp4" c) Set a "Content-Type" or "Content-Disposition" header if possible.`,
	);
};