dl.emersa.it/src/routes/download/+server.ts
0d0 bf1c63e2e6
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TypeScript

import { error } from '@sveltejs/kit';
import type { RequestHandler } from './$types';
import { getYouTubeMetadata, streamYouTube } from '$lib/server/ytdlp';
import { isURLValid, logger, mimeTypeMap } from '$lib/server/helpers';
const validateRequest = (url: URL) => {
// Get query params
const link = url.searchParams.get('link');
const format = url.searchParams.get('format'); // mp3, mp4
const source = url.searchParams.get('source'); // youtube or spotify
// Validate input
if (!link || !format || !source) {
throw error(400, 'Missing required query parameters: link, format, or source');
}
if (source !== 'youtube') {
throw error(400, 'Currently, only YouTube is supported');
}
if (!isURLValid(link)) {
throw error(400, 'URL not valid');
}
if (!mimeTypeMap.get(format)) {
throw error(400, 'format not valid');
}
logger.debug(`Request is valid`);
return {
link,
format,
source
};
};
export const GET: RequestHandler = async ({ url }) => {
const { format, link } = validateRequest(url);
let filename = '';
logger.debug(`Requested: ${link}`);
try {
logger.debug(`Fetching video data to set filename`);
// Fetch metadata for filename
const ytMetadata = await getYouTubeMetadata(link);
const { title, uploader } = ytMetadata;
const safeTitle = `${uploader} - ${title}`;
filename = `${safeTitle}.${format}`;
} catch (err) {
logger.error(err);
logger.error('Error fetching metadata:');
throw error(500, 'Failed to fetch video metadata');
}
try {
// Stream video/audio
return new Response(streamYouTube(link, format), {
headers: {
'Content-Type': `${mimeTypeMap.get(format)}`,
'Content-Disposition': `attachment; filename="${filename}"`
}
});
} catch (err) {
logger.error(err);
logger.error('Filed to stream file');
throw error(500, 'Failed to stream file');
}
};