using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Authorization;

namespace Host.Controllers;

[Authorize]
[ApiController]
[Route("api/webrtc")]
public sealed class WebRtcController : ControllerBase
{
    private readonly IConfiguration _configuration;

    public WebRtcController(IConfiguration configuration)
    {
        _configuration = configuration;
    }

    [HttpGet("ice-servers")]
    public IActionResult GetIceServers()
    {
        var turnUrl = _configuration["WebRtc:TurnUrl"];
        var turnUsername = _configuration["WebRtc:TurnUsername"];
        var turnPassword = _configuration["WebRtc:TurnPassword"];

        var iceServers = new List<object>();

        if (!string.IsNullOrEmpty(turnUrl) && !string.IsNullOrEmpty(turnUsername) && !string.IsNullOrEmpty(turnPassword))
        {
            // Use the VPS server as both STUN and TURN
            var stunUrl = turnUrl.Replace("turn:", "stun:");
            
            iceServers.Add(new { urls = new[] { stunUrl } });
            iceServers.Add(new
            {
                urls = new[] { turnUrl, turnUrl + "?transport=tcp" },
                username = turnUsername,
                credential = turnPassword,
            });
        }

        return Ok(new { iceServers });
    }
}