using CompServ.ClientLibrary;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
using static CompServ.CompServConst;

namespace CompServ.Hub
{
    [ApiController]
    public class HubController(HubWorkerHolder hubWorkerHolder, ILogger<HubController> logger) : ControllerBase
    {
        [HttpGet]
        [Route(ApiPathHubRootForCheckAlive)]
        public ActionResult CheckAlive() => Content(AliveMessageHub);

        [HttpPost]
        [Route(ApiPathHubRegisterWorker)]
        public async Task<ActionResult> Register()
        {
            var wr = HttpContext.Request.ExtractWorkerRegister();
            if (wr.port == null || wr.ratio == null) return StatusCode(400, "missing required header");

            var url = $"http://{Request.HttpContext.Connection.RemoteIpAddress}:{wr.port}";

            var workerClient = new CompServWorkerClient(url);
            if (await workerClient.CheckAliveAsync()) hubWorkerHolder.RegisterWorker(url, wr.ratio.Value);
            else logger.LogWarning("Worker no alive, skip register. url: " + url + " ratio: " + wr.ratio);

            return Empty;
        }

        [HttpPost]
        [Route(ApiPathHubUnRegisterWorker)]
        public async Task<ActionResult> UnRegister()
        {
            var wr = HttpContext.Request.ExtractWorkerRegister();
            if (wr.port == null) return StatusCode(400, "missing required header");

            var url = $"http://{Request.HttpContext.Connection.RemoteIpAddress}:{wr.port}";
            hubWorkerHolder.UnRegisterWorker(url);

            return Empty;
        }

        [HttpGet]
        [Route(ApiPathHubGetWorker)]
        public async Task<ActionResult> GetWorker()
        {
            var url = await hubWorkerHolder.GetWorkerAsync();
            return Content(url);
        }
    }
}