YD_TrainingCompetition_Api/Controllers/DevicesController.cs

using Microsoft.AspNetCore.Mvc;
using YD_TrainingCompetition_Api.Models;
using YD_TrainingCompetition_Api.Services;

namespace YD_TrainingCompetition_Api.Controllers;

[ApiController]
[Route("api/[controller]")]
public sealed class DevicesController : ControllerBase
{
    private readonly IDeviceStateStore _store;
    private readonly IRealtimeNotifier _notifier;

    public DevicesController(IDeviceStateStore store, IRealtimeNotifier notifier)
    {
        _store = store;
        _notifier = notifier;
    }

    [HttpGet]
    public IActionResult GetAll()
    {
        return Ok(_store.GetAll());
    }

    [HttpGet("{deviceId}")]
    public IActionResult GetById(string deviceId)
    {
        var snapshot = _store.GetByDeviceId(deviceId);
        return snapshot is null ? NotFound() : Ok(snapshot);
    }

    [HttpPost("ingest")]
    public async Task<IActionResult> Ingest([FromBody] DeviceTelemetry telemetry, CancellationToken cancellationToken)
    {
        if (!_store.TryUpsert(telemetry, out var reason))
        {
            return BadRequest(new { message = reason });
        }

        var snapshot = _store.GetByDeviceId(telemetry.DeviceId);
        if (snapshot is not null)
        {
            await _notifier.BroadcastTelemetryAsync(snapshot, cancellationToken);
        }

        return Accepted(new { message = "telemetry accepted" });
    }
}