/**
 * Browser Streaming Statistics WebSocket Handler
 * Handles getting browser streaming statistics
 * **PROJECT ISOLATION**: Uses project-specific BrowserPreviewService instances
 */

import { t } from 'elysia';
import { createRouter } from '$shared/utils/ws-server';
import { requireBrowserTabAccess } from '../access';

export const statsPreviewHandler = createRouter()
	.http('preview:browser-tab-stats', {
		data: t.Object({
			tabId: t.Optional(t.String()) // If not provided, get active tab stats
		}),
		response: t.Object({
			tabId: t.String(),
			isWebCodecsActive: t.Boolean(),
			streamingMode: t.String(),
			stats: t.Union([
				t.Object({
					videoBytesSent: t.Number(),
					audioBytesSent: t.Number(),
					videoFramesEncoded: t.Number(),
					audioFramesEncoded: t.Number(),
					connectionState: t.String()
				}),
				t.Null()
			]),
			timestamp: t.String()
		})
	}, async ({ data, conn }) => {
		const { tabId } = data;
		const { previewService, tab } = requireBrowserTabAccess(conn, tabId);

		const stats = await previewService.getWebCodecsStats(tab.id);

		return {
			tabId: tab.id,
			isWebCodecsActive: previewService.isWebCodecsActive(tab.id),
			streamingMode: 'webcodecs',
			stats: stats ?? null,
			timestamp: new Date().toISOString()
		};
	});