using AlibabaCloud.SDK.Facebody20191230.Models;
using Microsoft.AspNetCore.Http;
using System;
using System.Collections.Generic;
using System.IO;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using Tea;
using VOL.Core.Configuration;
using static AlibabaCloud.SDK.Facebody20191230.Models.SearchFaceResponseBody.SearchFaceResponseBodyData.SearchFaceResponseBodyDataMatchList;

namespace VOL.Core.Utilities
{
    /// <summary>
    /// 阿里云Face
    /// </summary>
    public class ALiYunFace
    {
        /// <summary>
        /// 获取 Client
        /// </summary>
        /// <returns></returns>
        public static AlibabaCloud.SDK.Facebody20191230.Client CreateClient()
        {
            AlibabaCloud.OpenApiClient.Models.Config config = new AlibabaCloud.OpenApiClient.Models.Config
            {
                AccessKeyId = AppSetting.ALiYunFaceDetect.AccessKeyId,
                AccessKeySecret = AppSetting.ALiYunFaceDetect.SecretAccessKey,
                Endpoint = AppSetting.ALiYunFaceDetect.Endpoint
            };
            return new AlibabaCloud.SDK.Facebody20191230.Client(config);
        }

        /// <summary>
        /// 添加人脸样本
        /// </summary>
        /// <param name="schoolCode"></param>
        /// <param name="entityId"></param>
        /// <param name="isStudent"></param>
        /// <returns></returns>
        /// <exception cref="Exception"></exception>
        public static async Task<bool> FaceEntityWith(FaceEntityWithDto faceEntityWithDto)
        {
            AlibabaCloud.SDK.Facebody20191230.Client client = CreateClient();
            AddFaceEntityRequest addFaceEntityRequest = new AddFaceEntityRequest()
            {
                EntityId = faceEntityWithDto.EntityId,
                Labels = faceEntityWithDto.SchoolCode,
                DbName = faceEntityWithDto.IsStudent ? AppSetting.ALiYunFaceDetect.StudeneDb : AppSetting.ALiYunFaceDetect.TeacherDb
            };
            AlibabaCloud.TeaUtil.Models.RuntimeOptions runtime = new AlibabaCloud.TeaUtil.Models.RuntimeOptions();
            try
            {
                var res = await client.AddFaceEntityWithOptionsAsync(addFaceEntityRequest, runtime);
                return res != null;
            }
            catch (TeaException error)
            {
                throw new Exception(error.Message);
            }
            catch (Exception _error)
            {
                TeaException error = new TeaException(new Dictionary<string, object>
                {
                    { "message", _error.Message }
                });
                throw new Exception(error.Message);
            }
        }

        /// <summary>
        /// 删除人脸样本
        /// </summary>
        /// <param name="faceEntityWithDto"></param>
        /// <returns></returns>
        /// <exception cref="Exception"></exception>
        public static async Task<bool> DeleteFaceEntityWith(FaceEntityWithDto faceEntityWithDto)
        {
            AlibabaCloud.SDK.Facebody20191230.Client client = CreateClient();
            DeleteFaceEntityRequest deleteFaceEntityRequest = new DeleteFaceEntityRequest()
            {
                EntityId = faceEntityWithDto.EntityId,
                DbName = faceEntityWithDto.IsStudent ? AppSetting.ALiYunFaceDetect.StudeneDb : AppSetting.ALiYunFaceDetect.TeacherDb
            };
            AlibabaCloud.TeaUtil.Models.RuntimeOptions runtime = new AlibabaCloud.TeaUtil.Models.RuntimeOptions();
            try
            {
                var res = await client.DeleteFaceEntityWithOptionsAsync(deleteFaceEntityRequest, runtime);
                return res != null;
            }
            catch (TeaException error)
            {
                throw new Exception(error.Message);
            }
            catch (Exception _error)
            {
                TeaException error = new TeaException(new Dictionary<string, object>
                {
                    { "message", _error.Message }
                });
                throw new Exception(error.Message);
            }
        }

        /// <summary>
        /// 添加人脸数据
        /// </summary>
        /// <param name="schoolCode"></param>
        /// <param name="entityId"></param>
        /// <param name="isStudent"></param>
        /// <returns></returns>
        /// <exception cref="Exception"></exception>
        public static async Task<bool> FaceWith(FaceWithDto faceWithDto)
        {
            AlibabaCloud.SDK.Facebody20191230.Client client = CreateClient();
            AddFaceRequest addFaceRequest = new AddFaceRequest()
            {
                EntityId = faceWithDto.EntityId,
                ExtraData = faceWithDto.Name,
                ImageUrl = faceWithDto.ImageUrl,
                DbName = faceWithDto.IsStudent ? AppSetting.ALiYunFaceDetect.StudeneDb : AppSetting.ALiYunFaceDetect.TeacherDb
            };
            AlibabaCloud.TeaUtil.Models.RuntimeOptions runtime = new AlibabaCloud.TeaUtil.Models.RuntimeOptions();

            try
            {
                var res = await client.AddFaceWithOptionsAsync(addFaceRequest, runtime);
                return res != null;
            }
            catch (TeaException error)
            {
                throw new Exception($"人脸数据添加失败：请检查图片内容是否符合要求。确保图片中包含清晰无遮挡的人脸，并且图片分辨率符合要求（建议 640x480 或更高），文件大小不超过 2MB。错误详情：{error.Message}");
            }
            catch (Exception _error)
            {
                TeaException error = new TeaException(new Dictionary<string, object>
                {
                    { "message", _error.Message }
                });
                throw new Exception($"系统异常：人脸数据添加失败。可能原因包括图片格式或内容不符合要求。请确保图片为正面人脸清晰无遮挡，分辨率不少于 640x480，大小不超过 2MB。错误详情：{error.Message}");
            }

        }
        /// <summary>
        /// 搜索人脸
        /// </summary>
        /// <param name="faceDbName"></param>
        /// <returns></returns>
        public static async Task<SearchFaceResponseBodyDataMatchListFaceItems> SearchFace(string base64, bool isStudent = true)
        {
            AlibabaCloud.SDK.Facebody20191230.Client client = CreateClient();
            try
            {
                string pattern = @"^(\s*data\s*:\s*)?image\s*/\s*(png|jgp|jpg|jpeg)\s*;\s*base64\s*,";
                string cleanBase64Str = Regex.Replace(base64, pattern, "", RegexOptions.IgnoreCase);

                byte[] imageBytes = Convert.FromBase64String(cleanBase64Str);

                using (var stream = new MemoryStream(imageBytes))
                {
                    var searchFaceAdvanceRequest = new SearchFaceAdvanceRequest
                    {
                        ImageUrlObject = stream,
                        Limit = 1,
                        DbName = isStudent ? AppSetting.ALiYunFaceDetect.StudeneDb : AppSetting.ALiYunFaceDetect.TeacherDb
                    };

                    AlibabaCloud.TeaUtil.Models.RuntimeOptions runtime = new AlibabaCloud.TeaUtil.Models.RuntimeOptions();

                    var res = await client.SearchFaceAdvanceAsync(searchFaceAdvanceRequest, runtime);

                    return res.Body.Data.MatchList.Count > 0 && res.Body.Data.MatchList[0].FaceItems.Count > 0 ? res.Body.Data.MatchList[0].FaceItems[0] : null;
                }
            }
            catch (TeaException error)
            {
                throw new Exception(error.Message);
            }
            catch (Exception _error)
            {
                TeaException error = new TeaException(new Dictionary<string, object>
                {
                    { "message", _error.Message }
                });
                throw new Exception(error.Message);
            }
        }

        /// <summary>
        /// 搜索人脸
        /// </summary>
        /// <param name="faceDbName"></param>
        /// <returns></returns>
        public static async Task<SearchFaceResponseBodyDataMatchListFaceItems> SearchFace(IFormFile formFile, bool isStudent = true)
        {
            AlibabaCloud.SDK.Facebody20191230.Client client = CreateClient();
            try
            {
                using (var stream = formFile.OpenReadStream())
                {
                    var searchFaceAdvanceRequest = new SearchFaceAdvanceRequest
                    {
                        ImageUrlObject = stream,
                        Limit = 1,
                        DbName = isStudent ? AppSetting.ALiYunFaceDetect.StudeneDb : AppSetting.ALiYunFaceDetect.TeacherDb
                    };

                    AlibabaCloud.TeaUtil.Models.RuntimeOptions runtime = new AlibabaCloud.TeaUtil.Models.RuntimeOptions();

                    var res = await client.SearchFaceAdvanceAsync(searchFaceAdvanceRequest, runtime);

                    return res.Body.Data.MatchList.Count > 0 && res.Body.Data.MatchList[0].FaceItems.Count > 0 ? res.Body.Data.MatchList[0].FaceItems[0] : null;
                }
            }
            catch (TeaException error)
            {
                throw new Exception(error.Message);
            }
            catch (Exception _error)
            {
                TeaException error = new TeaException(new Dictionary<string, object>
                {
                    { "message", _error.Message }
                });
                throw new Exception(error.Message);
            }
        }
    }

    public class FaceEntityWithDto
    {
        public bool IsStudent { get; set; }

        public string SchoolCode { get; set; }

        public string EntityId { get; set; }
    }

    public class FaceWithDto : FaceEntityWithDto
    {
        public string Name { get; set; }
        public string ImageUrl { get; set; }
    }
}