/**
 * GET /api/v1/jobs/stream — stream real-time job progress for all jobs or a specific repository via SSE.
 *
 * Query parameters:
 *   repositoryId (optional) — filter to jobs for this repository
 */

import type { RequestHandler } from './$types';
import { getBroadcaster } from '$lib/server/pipeline/progress-broadcaster.js';
import { handleServiceError } from '$lib/server/utils/validation.js';

export const GET: RequestHandler = ({ url }) => {
	try {
		const broadcaster = getBroadcaster();
		if (!broadcaster) {
			return new Response('Service unavailable', { status: 503 });
		}

		const repositoryId = url.searchParams.get('repositoryId');

		// Get the appropriate stream based on parameters
		let stream;
		if (repositoryId) {
			stream = broadcaster.subscribeRepository(repositoryId);
		} else {
			stream = broadcaster.subscribeAll();
		}

		return new Response(stream, {
			headers: {
				'Content-Type': 'text/event-stream',
				'Cache-Control': 'no-cache',
				Connection: 'keep-alive',
				'X-Accel-Buffering': 'no',
				'Access-Control-Allow-Origin': '*'
			}
		});
	} catch (err) {
		return handleServiceError(err);
	}
};

export const OPTIONS: RequestHandler = () => {
	return new Response(null, {
		status: 204,
		headers: {
			'Access-Control-Allow-Origin': '*',
			'Access-Control-Allow-Methods': 'GET, OPTIONS',
			'Access-Control-Allow-Headers': 'Content-Type, Authorization'
		}
	});
};