using System;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using YunDa.Server.ISMSTcp.Interfaces;
using YunDa.Server.ISMSTcp.Models;

namespace YunDa.Server.ISMSTcp.Controllers
{
    /// <summary>
    /// 查询API控制器
    /// </summary>
    [ApiController]
    [Route("api")]
    public class QueryController : ControllerBase
    {
        private readonly ILogger<QueryController> _logger;
        private readonly IQueryService _queryService;

        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="logger">日志记录器</param>
        /// <param name="queryService">查询服务</param>
        public QueryController(ILogger<QueryController> logger, IQueryService queryService)
        {
            _logger = logger;
            _queryService = queryService;
        }

        /// <summary>
        /// 处理查询请求
        /// </summary>
        /// <param name="dz">定值参数</param>
        /// <param name="faultRpt">故障报告参数</param>
        /// <param name="waveCfg">波形配置参数</param>
        /// <param name="waveDat">波形文件参数</param>
        /// <param name="version">装置版本参数</param>
        /// <param name="cancellationToken">取消令牌</param>
        /// <returns>查询结果</returns>
        [HttpGet]
        public async Task<IActionResult> ProcessQuery(
            [FromQuery] string? dz = null,
            [FromQuery] string? faultRpt = null,
            [FromQuery] string? waveCfg = null,
            [FromQuery] string? waveDat = null,
            [FromQuery] string? version = null,
            CancellationToken cancellationToken = default)
        {
            try
            {
                _logger.LogInformation("收到查询请求 - dz:{Dz}, faultRpt:{FaultRpt}, waveCfg:{WaveCfg}, waveDat:{WaveDat}, version:{Version}",
                    dz, faultRpt, waveCfg, waveDat, version);

                WebResult<object> result;

                // 根据参数类型处理不同的查询
                if (!string.IsNullOrEmpty(dz))
                {
                    result = await _queryService.ProcessRequestAsync(dz, "定值", cancellationToken);
                }
                else if (!string.IsNullOrEmpty(faultRpt))
                {
                    result = await _queryService.ProcessRequestAsync(faultRpt, "故障报告", cancellationToken);
                }
                else if (!string.IsNullOrEmpty(waveCfg))
                {
                    result = await _queryService.ProcessRequestAsync(waveCfg, "波形配置", cancellationToken);
                }
                else if (!string.IsNullOrEmpty(waveDat))
                {
                    result = await _queryService.ProcessRequestAsync(waveDat, "波形文件", cancellationToken);
                }
                else if (!string.IsNullOrEmpty(version))
                {
                    result = await _queryService.ProcessRequestAsync(version, "装置版本", cancellationToken);
                }
                else
                {
                    result = WebResult<object>.InvalidParameter();
                }

                // 返回结果
                return StatusCode(result.StatusCode, JsonConvert.SerializeObject(result));
            }
            catch (OperationCanceledException)
            {
                _logger.LogWarning("查询请求被取消");
                return StatusCode(504, "请求超时");
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "处理查询请求时发生异常");
                return StatusCode(500, $"服务器内部错误: {ex.Message}");
            }
        }

        /// <summary>
        /// 获取服务状态
        /// </summary>
        /// <returns>服务状态</returns>
        [HttpGet("status")]
        public IActionResult GetStatus()
        {
            try
            {
                var status = new
                {
                    IsQueryInProgress = _queryService.IsQueryInProgress,
                    Timestamp = DateTime.Now,
                    Status = "Running"
                };

                return Ok(JsonConvert.SerializeObject(status));
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "获取服务状态时发生异常");
                return StatusCode(500, $"获取状态失败: {ex.Message}");
            }
        }

        /// <summary>
        /// 健康检查端点
        /// </summary>
        /// <returns>健康状态</returns>
        [HttpGet("health")]
        public IActionResult HealthCheck()
        {
            return Ok("Healthy");
        }
    }
}