using Bitget_Server.Domain.Enums;
using Bitget_Server.Infrastructure.Bitget;
using Microsoft.AspNetCore.Mvc;

namespace Bitget_Server.Api.Controllers;

/// <summary>
/// 기존 WinForms 의 BitGetWebSocektStart / closeWebSocket 버튼 REST 화.
/// </summary>
[ApiController]
[Route("api/websocket")]
[Produces("application/json")]
public class WebSocketController : ControllerBase
{
    private readonly BitgetWebSocketClient _ws;
    private readonly ILogger<WebSocketController> _logger;

    public WebSocketController(BitgetWebSocketClient ws, ILogger<WebSocketController> logger)
    {
        _ws = ws;
        _logger = logger;
    }

    /// <summary>현재 WebSocket 연결 상태.</summary>
    [HttpGet("status")]
    [ProducesResponseType(typeof(object), StatusCodes.Status200OK)]
    public IActionResult GetStatus() => Ok(new { connected = _ws.IsConnected });

    /// <summary>
    /// WebSocket 연결 시작. subscribeArgs 는 Bitget 공식 포맷의 args 리스트.
    /// 예: [{"instType":"USDT-FUTURES","channel":"ticker","instId":"BTCUSDT"}]
    /// </summary>
    [HttpPost("start")]
    [ProducesResponseType(StatusCodes.Status202Accepted)]
    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status500InternalServerError)]
    public async Task<IActionResult> Start(
        [FromQuery] BitgetWebSocketType type,
        [FromBody] IEnumerable<object> subscribeArgs,
        CancellationToken ct)
    {
        try
        {
            var dic = new Dictionary<string, object>
            {
                { "op", "subscribe" },
                { "args", subscribeArgs ?? Array.Empty<object>() }
            };
            await _ws.StartAsync(type, dic, ct);
            return Accepted();
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "WebSocket Start 실패");
            return Problem(detail: ex.Message, statusCode: StatusCodes.Status500InternalServerError, title: "WebSocket start failed");
        }
    }

    /// <summary>WebSocket 연결 종료.</summary>
    [HttpPost("stop")]
    [ProducesResponseType(StatusCodes.Status204NoContent)]
    public async Task<IActionResult> Stop(CancellationToken ct)
    {
        await _ws.StopAsync(ct);
        return NoContent();
    }
}