import logging

from aiohttp import web

logger = logging.getLogger("vision")


async def start_health_server(port: int, host: str = "0.0.0.0"):
    """Demarre un mini serveur HTTP expose par le conteneur Docker.

    Le runner de deploiement interroge /health pour valider le demarrage
    (health check post-deploy, comme Kuby).
    """

    async def health(_request: web.Request) -> web.Response:
        return web.Response(text='{"status":"ok"}', content_type="application/json")

    app = web.Application()
    app.router.add_get("/health", health)
    app.router.add_get("/api/health", health)

    runner = web.AppRunner(app)
    await runner.setup()
    site = web.TCPSite(runner, host, port)
    await site.start()
    logger.info("Health server demarre sur %s:%s", host, port)
    return runner