import { json, error } from '@sveltejs/kit';
import { createJob, listJobs } from '$lib/server/db.js';
import { startYouTubeJob, startUploadJob } from '$lib/server/pipeline.js';
import type { AudioMode } from '$lib/types.js';

export async function GET() {
	return json(listJobs());
}

export async function POST({ request }) {
	const contentType = request.headers.get('content-type') ?? '';

	let url: string | null = null;
	let audioMode: AudioMode = 'auto';
	let language: string | undefined;
	let fileBuffer: Buffer | null = null;
	let filename = 'upload';

	if (contentType.includes('application/json')) {
		const body = await request.json();
		url = body.url ?? null;
		audioMode = body.audioMode ?? 'auto';
		language = body.language;
	} else if (contentType.includes('multipart/form-data')) {
		const form = await request.formData();
		url = form.get('url')?.toString() ?? null;
		audioMode = (form.get('audioMode')?.toString() as AudioMode) ?? 'auto';
		language = form.get('language')?.toString();
		const file = form.get('file');
		if (file instanceof File) {
			fileBuffer = Buffer.from(await file.arrayBuffer());
			filename = file.name;
		}
	} else {
		throw error(415, 'Unsupported content type');
	}

	if (!url && !fileBuffer) throw error(400, 'Provide url or file');

	const jobId = url
		? await startYouTubeJob(url, audioMode, language)
		: await startUploadJob(fileBuffer!, filename, audioMode, language);

	return json({ id: jobId }, { status: 201 });
}