using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net.Http;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using System.Web.Http;
using XdCxRhDw.Dto;
using XdCxRhDW.Core.Api;
using XdCxRhDW.WebApi;
using System.ComponentModel.DataAnnotations;

namespace XdCxRhDW.WebApi.Controllers
{
    /// <summary>
    /// 检测参估功能相关接口
    /// </summary>
    public class DetectCgController : BaseController
    {
        private readonly string uploadFolder;

        /// <summary>
        /// 
        /// </summary>
        public DetectCgController()
        {
            this.uploadFolder = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "wwwroot");
        }

        /// <summary>
        /// CPU参估计算
        /// </summary>
        /// <param name="dto">CPU参估参数</param>
        /// <returns></returns>
        [HttpPost]
        [CustomValidation(typeof(CpuCgDto), "Validate")]
        public async Task<AjaxResult<CpuCgResDto>> CpuCgCalc(CpuCgDto dto)
        {
            dto.file1 = Path.Combine(uploadFolder, dto.file1);
            dto.file2 = Path.Combine(uploadFolder, dto.file2);
            var vpres = ValidateCalcParam(dto);
            if (!vpres.Item1)
            {
                Serilog.Log.Warning(vpres.Item2);
                return Error<CpuCgResDto>(vpres.Item2);
            }
            XcorrStruct xItem = new XcorrStruct();
            xItem.file1 = dto.file1;
            xItem.file2 = dto.file2;
            xItem.samplingRate = dto.samplingRate;
            xItem.dtCenter = dto.dtCenter;
            xItem.dtRange = dto.dtRange;
            xItem.dfRange = dto.dfRange;
            //样点数为0时计算所有样本
            if (dto.smpCount == 0)
            {

                FileInfo file = new FileInfo(dto.file1);
                long totalsamp = file.Length / 4;
                xItem.smpCount = (int)totalsamp - dto.smpStart;
            }
            else
            {
                xItem.smpCount = dto.smpCount;
            }
            xItem.smpStart = dto.smpStart;
            xItem.snrThreshold = dto.snrThreshold;

            CpuCgResDto resDto = new CpuCgResDto();
            try
            {
                XcorrUtils xcorr = new XcorrUtils();
                var result = await xcorr.Calc(xItem);
                //开始计算
                if (result.flag == -2)
                {
                    Serilog.Log.Warning("参估计算内部错误!");
                    return Error<CpuCgResDto>("参估计算内部错误!");
                }
                else if (result.flag == -1)
                {
                    Serilog.Log.Warning("参估计算所需数据超出文件范围!");
                    return Error<CpuCgResDto>("参估计算所需数据超出文件范围!");
                }
                resDto.TimeMs = result.tm;
                resDto.Smpstart = result.smpstart;
                resDto.Smplen = result.smplen;
                resDto.File1 = result.file1;
                resDto.File2 = result.file2;
                if (result.flag == 1)
                {
                    resDto.Dt = result.dt.Value;
                    resDto.Df = result.df.Value;
                    resDto.Snr = result.snr.Value;
                }


            }
            catch (Exception ex)
            {
                return Error<CpuCgResDto>($"执行参估计算异常,{ex.Message}");
            }
            finally
            {
                try
                {
                    //删除计算得文件
                    File.Delete(dto.file1);
                    File.Delete(dto.file2);
                }
                catch
                {
                }
            }
            return Success(resDto);

        }

        /// <summary>
        /// 信号检测(支持DAMA、IBS、能量检测)
        /// </summary>
        /// <param name="dto">信号检测参数</param>
        /// <returns></returns>
        [HttpPost]
        public async Task<AjaxResult<IEnumerable<DetectResDto>>> DetectCalc(DetectDto dto)
        {
            var token = Request.GetCorrelationId().ToString();
            dto.file1 = Path.Combine(uploadFolder, dto.file1);
            var vpres = ValidateDetectParam(dto);
            if (!vpres.Item1)
            {
                Serilog.Log.Warning(vpres.Item2);
                return Error<IEnumerable<DetectResDto>>(vpres.Item2);
            }
            List<DetectResDto> list = new List<DetectResDto>();
            try
            {
                XcorrUtils xcorr = new XcorrUtils();
                var dmcResult = await xcorr.DmcCheckAsync(dto.file1, dto.fsHz, dto.dmcType);
                foreach (var dmcItem in dmcResult)
                {
                    DetectResDto detectRes = new DetectResDto(dmcItem.Start, dmcItem.Length, dmcItem.UserName);
                    detectRes.File1 = dto.file1;
                    detectRes.TimeMs = dmcItem.Times;
                    detectRes.Token = token;
                    list.Add(detectRes);

                }
            }
            catch (Exception ex)
            {
                return Error<IEnumerable<DetectResDto>>($"执行检测计算异常,{ex.Message}");
            }
            finally
            {
                try
                {
                    //删除检测的文件
                    File.Delete(dto.file1);
                }
                catch
                {
                }
            }
            return Success<IEnumerable<DetectResDto>>(list);

        }

        private (bool, string) ValidateCalcParam(CpuCgDto dto)
        {
            if (dto == null)
            {
                return (false, "参估计算参数格式错误!");
            }
            if (string.IsNullOrEmpty(dto.file1))
            {
                return (false, "参估计算参数数据文件[file1]不能为空!");
            }
            if (string.IsNullOrEmpty(dto.file2))
            {
                return (false, "参估计算参数数据文件[file2]不能为空!");
            }
            if (!File.Exists(dto.file1))
            {
                return (false, $"参估计算参数数据文件[{Path.GetFileName(dto.file1)}]不存在!");
            }
            if (!File.Exists(dto.file2))
            {
                return (false, $"参估计算参数数据文件[{Path.GetFileName(dto.file2)}]不存在!");
            }
            if (dto.dtRange <= 0)
            {
                return (false, "参估计算参数时差范围[dtRange]不能小于等于0!");
            }
            if (dto.smpStart < 0)
            {
                return (false, "参估计算参数开始样点[smpStart]不能小于0!");
            }
            if (dto.smpCount < 0)
            {
                return (false, "参估计算参数样点数[smpCount]不能小于0!");
            }
            return (true, string.Empty);
        }

        private (bool, string) ValidateDetectParam(DetectDto dto)
        {
            if (dto == null)
            {
                return (false, "检测计算参数格式错误!");
            }
            if (string.IsNullOrEmpty(dto.file1))
            {
                return (false, "检测计算参数数据文件[file1]不能为空!");
            }
            if (!File.Exists(dto.file1))
            {
                return (false, $"检测计算参数数据文件[{dto.file1}]不存在!");
            }
            bool containsValue = Enum.IsDefined(typeof(DmcType), dto.dmcType);
            if (!containsValue)
            {
                return (false, $"检测计算参数[dmcType]检测类型值{dto.dmcType}不存在!");
            }

            return (true, string.Empty);
        }

    }
}