using YD_WeChatApplet.Context;
using Microsoft.EntityFrameworkCore;
using YD_WeChatApplet.Commons;
using YD_WeChatApplet.Api.Utilities;
using Microsoft.AspNetCore.Mvc;
using TGJ.NetworkFreight.SeckillAggregateServices.Pos.UserService;
using YD_WeChatApplet.WeChat.Lib;
using YD_WeChatApplet.WeChat;
using YD_WeChatApplet.Api.Entitys;
using YD_WeChatApplet.Commons.Users;
using System.Linq.Expressions;
using YD_WeChatApplet.Commons.Dto;
using YD_WeChatApplet.Api.Services.Impl;
using YD_WeChatApplet.Commons.Dto.User;
using Newtonsoft.Json.Linq;
using Microsoft.Extensions.Logging;
using System.Net;
using YD_WeChatApplet.Api.SmartSportsEntitys;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Authorization;
using System.Text.Json;
using Microsoft.EntityFrameworkCore.Metadata.Internal;
using YD_WeChatApplet.Commons.Dto.ClientSide;
using System.Reflection;

namespace YD_WeChatApplet.Services
{
    public class UserService : IUserService
    {
        public UserContext _userContext;
        public SmartSportsContext _smartSportsContext;
        private readonly ICacheService _caching;

        public UserService(UserContext userContext, SmartSportsContext smartSportsContext, ICacheService caching)
        {
            _userContext = userContext;
            _smartSportsContext = smartSportsContext;
            _caching = caching;
        }

        /// <summary>
        /// 账号密码登录
        /// </summary>
        /// <returns></returns>
        public async Task<UserInfoDto> Login(LoginInfo paramDto)
        {
            User userModel = null;

            switch (paramDto.RoleId)
            {
                case 2: // 教师登录
                    userModel = await QueryUserByRole(
                        x => x.UserName == paramDto.Key &&
                             EF.Functions.Collate(x.UserPwd, "SQL_Latin1_General_CP1_CS_AS") == paramDto.Password,
                        () => GetTeacherUser(paramDto)
                    );
                    break;

                case 3: // 家长登录
                    userModel = await QueryUserByRole(
                        x => x.UserName == paramDto.Key && x.UserPwd == paramDto.Password,
                        () => GetParentUser(paramDto)
                    );
                    break;

                default:
                    throw new Exception("无效的角色ID");
            }

            if (userModel == null || userModel.User_Id <= 0)
                throw new Exception("用户新增失败");

            var openId = _caching.Get(userModel.User_Id.ToString());

            if (openId != null && openId.ToString() != paramDto.OpenId)
                throw new Exception("该用户已在其他设备上登陆，请退出后再登录");
            else
                _caching.Add(userModel.User_Id.ToString(), paramDto.OpenId);

            return await GenerateUserInfoDto(userModel);
        }

        private async Task<User> QueryUserByRole(Expression<Func<User, bool>> queryCondition, Func<Task<UserModelDataDto>> createUser)
        {
            var userModel = await _userContext.Users.FirstOrDefaultAsync(queryCondition);

            if (userModel == null)
            {
                var userData = await createUser();
                if (userData == null)
                    throw new Exception("账号或密码错误");

                userModel = CreateUserModel(userData);

                // 保存新用户信息
                await _userContext.Users.AddAsync(userModel);
                await _userContext.SaveChangesAsync();
            }

            return userModel;
        }

        private async Task<UserModelDataDto> GetTeacherUser(LoginInfo paramDto)
        {
            //var user = await _userContext.Users.FirstOrDefaultAsync(x => x.Role_Id == paramDto.RoleId && x.UserName == paramDto.Key);
            //if (user == null)
            //{
            var teacherUser = await _smartSportsContext.Teacher
                  .Join(_smartSportsContext.School, t => t.SchoolCode, s => s.SchoolCode, (t, s) => new
                  {
                      t.Id,
                      t.TeacherPhoneNo,
                      t.AppletPwd,
                      t.TeacherStatus,
                      t.TeacherName,
                      t.SchoolCode,
                      t.Sex,
                      t.TeacherPhoto,
                      s.SchoolType
                  }).FirstOrDefaultAsync(x => x.TeacherPhoneNo == paramDto.Key && x.AppletPwd == paramDto.Password && x.TeacherStatus == 1);

            if (teacherUser == null)
                return null;

            if (teacherUser.SchoolType == 1)
            {
                return new UserModelDataDto
                {
                    PhoneNo = teacherUser.TeacherPhoneNo,
                    UserPwd = teacherUser.AppletPwd,
                    UserName = teacherUser.TeacherPhoneNo,
                    UserTrueName = teacherUser.TeacherName,
                    Gender = teacherUser.Sex,
                    HeadImageUrl = teacherUser.TeacherPhoto,
                    SchoolCode = teacherUser.SchoolCode,
                    RoleName = "老师",
                    RoleId = 2,
                    RelevanceId = Guid.NewGuid(),
                    OpenId = paramDto.OpenId
                };
            }
            else
            {
                return new UserModelDataDto
                {
                    PhoneNo = teacherUser.TeacherPhoneNo,
                    UserPwd = teacherUser.AppletPwd,
                    UserName = teacherUser.TeacherPhoneNo,
                    UserTrueName = teacherUser.TeacherName,
                    Gender = teacherUser.Sex,
                    HeadImageUrl = teacherUser.TeacherPhoto,
                    SchoolCode = teacherUser.SchoolCode,
                    RoleName = "教练",
                    RoleId = 4,
                    RelevanceId = Guid.NewGuid(),
                    OpenId = paramDto.OpenId
                };
            }
            //}
            //return null;
        }

        private async Task<UserModelDataDto> GetParentUser(LoginInfo paramDto)
        {
            var parentUser = await _smartSportsContext.Student
                .FirstOrDefaultAsync(x => x.StudentName == paramDto.Key && x.StudentNo == paramDto.Password && x.StudentStatus == 1);

            if (parentUser == null)
                return null;

            return new UserModelDataDto
            {
                PhoneNo = parentUser.ParentPhoneNo,
                UserPwd = parentUser.StudentNo,
                UserName = parentUser.StudentName,
                UserTrueName = parentUser.StudentName,
                Gender = parentUser.Sex,
                HeadImageUrl = parentUser.Photo,
                Address = parentUser.HomeAddress,
                SchoolCode = parentUser.SchoolCode,
                RoleName = "家长",
                RoleId = 3,
                RelevanceId = Guid.NewGuid()
            };
        }

        private User CreateUserModel(UserModelDataDto userData)
        {
            return new User()
            {
                ModifyDate = DateTime.Now,
                CreateDate = DateTime.Now,
                Enable = true,
                RoleName = userData.RoleName,
                Role_Id = userData.RoleId,
                HeadImageUrl = userData.HeadImageUrl,
                Address = userData.Address,
                Gender = userData.Gender,
                Email = userData.Email,
                PhoneNo = userData.PhoneNo,
                SchoolCode = userData.SchoolCode,
                UserName = userData.UserName,
                UserPwd = userData.UserPwd,
                UserTrueName = userData.UserTrueName,
            };
        }

        private async Task<UserInfoDto> GenerateUserInfoDto(User userModel)
        {
            string token = JwtHelper.IssueJwt(new UserInfoDto()
            {
                User_Id = userModel.User_Id,
                UserName = userModel.UserName,
                Role_Id = userModel.Role_Id,
                PhoneNo = userModel.PhoneNo ?? "",
                SchoolCode = userModel.SchoolCode,
                UserTrueName = userModel.UserName,
                UserNo = userModel.UserPwd
            });

            var userAuth = await _userContext.User_Auth.CountAsync(x => x.Self_Id == userModel.User_Id && x.Bind_Id == userModel.User_Id);
            if (userAuth == 0)
            {
                await _userContext.User_Auth.AddAsync(new User_Auth()
                {
                    Self_Id = userModel.User_Id,
                    Bind_Id = userModel.User_Id,
                    Role_Id = userModel.Role_Id,
                    Token = token
                });

                await _userContext.SaveChangesAsync();
            }

            return new UserInfoDto()
            {
                SchoolCode = userModel.SchoolCode,
                Enable = userModel.Enable,
                PhoneNo = userModel.PhoneNo,
                RoleName = userModel.RoleName,
                Role_Id = userModel.Role_Id,
                UserName = userModel.UserName,
                UserTrueName = userModel.UserName,
                User_Id = userModel.User_Id,
                UserNo = userModel.UserPwd,
                Token = token
            };
        }

        public async Task<UserInfoDto> WxFirstLogin(WXLoginPo loginPo)
        {
            try
            {
                var wli = new WechatLoginInfo();
                wli.code = loginPo.code;
                wli.encryptedData = loginPo.encryptedData;
                wli.iv = loginPo.iv;
                wli.rawData = loginPo.rawData;
                wli.signature = loginPo.signature;

                wli.appid = AppSettings.WeChat.Appid;
                wli.secret = AppSettings.WeChat.Secret;

                Console.WriteLine(JsonSerializer.Serialize(wli));

                WechatUserInfo wechatResult = new WeChatAppDecrypt().Decrypt(wli);

                Console.WriteLine(JsonSerializer.Serialize(wechatResult));

                if (wechatResult == null || string.IsNullOrWhiteSpace(wechatResult.phoneNumber))
                {
                    throw new Exception("手机号获取失败");
                }

                var userInfo = await _userContext.Users.FirstOrDefaultAsync(x => x.wx_OpenID == wechatResult.openId);

                if (userInfo == null)
                {
                    userInfo = new User()
                    {
                        ModifyDate = DateTime.Now,
                        CreateDate = DateTime.Now,
                        UserName = wechatResult.phoneNumber,
                        PhoneNo = wechatResult.phoneNumber,
                        wx_HeadImgUrl = wechatResult.avatarUrl,
                        wx_NickName = wechatResult.nickName,
                        UserTrueName = string.IsNullOrWhiteSpace(wechatResult.nickName) ? "" : wechatResult.nickName,
                        wx_OpenID = wechatResult.openId,
                        Enable = true,
                        RoleName = "用户",
                        Role_Id = 1
                    };

                    await _userContext.Users.AddAsync(userInfo);
                    await _userContext.SaveChangesAsync();

                    if (userInfo == null || userInfo.User_Id <= 0)
                    {
                        throw new Exception("用户新增失败");
                    }
                }
                else
                {
                    if (userInfo.UserName != wechatResult.phoneNumber)
                    {
                        throw new Exception("该微信已绑定手机号!");
                    }
                }

                string token = JwtHelper.IssueJwt(new UserInfoDto()
                {
                    User_Id = userInfo.User_Id,
                    UserName = userInfo.UserName,
                    Role_Id = userInfo.Role_Id,
                    SchoolCode = userInfo.PhoneNo
                });

                var userAuth = await _userContext.User_Auth.CountAsync(x => x.Self_Id == userInfo.User_Id && x.Bind_Id == userInfo.User_Id);
                if (userAuth == 0)
                {
                    await _userContext.User_Auth.AddAsync(new User_Auth()
                    {
                        Self_Id = userInfo.User_Id,
                        Bind_Id = userInfo.User_Id,
                        Role_Id = userInfo.Role_Id,
                        Token = token
                    });

                    await _userContext.SaveChangesAsync();
                }

                return new UserInfoDto()
                {
                    Enable = userInfo.Enable,
                    PhoneNo = userInfo.PhoneNo,
                    RoleName = userInfo.RoleName,
                    Role_Id = userInfo.Role_Id,
                    UserName = userInfo.UserName,
                    UserTrueName = userInfo.UserName,
                    User_Id = userInfo.User_Id,
                    Token = token
                };
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
                Console.WriteLine(e.InnerException);

                return new UserInfoDto() { };
            }
        }

        /// <summary>
        /// 获取微信OpenID
        /// </summary>
        /// <param name="code"></param>
        /// <returns></returns>
        /// <exception cref="NotImplementedException"></exception>
        public async Task<string> GetWxOpenID(string code)
        {
            var wxSession = await GetWeChatSession(code);
            if (wxSession == null || string.IsNullOrEmpty(wxSession.openid))
            {
                throw new Exception("微信登录失败：无法获取openid");
            }

            return wxSession.openid;
        }

        /// <summary>
        /// 移除唯一标识
        /// </summary>
        /// <param name="userId"></param>
        /// <returns></returns>
        public Task RemoveUniqueIdentity(string userId)
        {
            _caching.Remove(userId);
            return Task.CompletedTask;
        }

        /// <summary>
        /// 验证唯一标识
        /// </summary>
        /// <param name="userId"></param>
        /// <param name="openId"></param>
        /// <returns></returns>
        public Task<bool> VerifyUniqueIdentity(string userId, string openId)
        {
            if (string.IsNullOrWhiteSpace(userId))
                throw new ArgumentNullException(nameof(userId));

            if (string.IsNullOrWhiteSpace(openId))
                throw new ArgumentNullException(nameof(openId));

            var identity = _caching.Get(userId);

            if (string.IsNullOrWhiteSpace(identity))
                _caching.Add(userId, openId);

            return Task.FromResult(string.IsNullOrWhiteSpace(identity) || identity == openId);
        }

        /// <summary>
        /// 微信登录
        /// </summary>
        /// <param name="code"></param>
        /// <returns></returns>
        /// <exception cref="Exception"></exception>
        public async Task<UserInfoDto> WxLogin(string code)
        {
            var wxSession = await GetWeChatSession(code);
            if (wxSession == null || string.IsNullOrEmpty(wxSession.openid))
            {
                throw new Exception("微信登录失败：无法获取openid");
            }

            var userInfo = await _userContext.Users.FirstOrDefaultAsync(x => x.wx_OpenID == wxSession.openid);

            if (userInfo == null)
            {
                return new UserInfoDto();
            }

            string token = JwtHelper.IssueJwt(new UserInfoDto()
            {
                User_Id = userInfo.User_Id,
                UserName = userInfo.UserName,
                Role_Id = userInfo.Role_Id,
                SchoolCode = userInfo.PhoneNo
            });

            // 异步启动一个后台任务，执行数据库插入逻辑，不影响主流程
            _ = Task.Run(async () =>
            {
                try
                {
                    var authCount = await _userContext.User_Auth
                        .CountAsync(x => x.Self_Id == userInfo.User_Id && x.Bind_Id == userInfo.User_Id);

                    if (authCount == 0)
                    {
                        await _userContext.User_Auth.AddAsync(new User_Auth()
                        {
                            Self_Id = userInfo.User_Id,
                            Bind_Id = userInfo.User_Id,
                            Role_Id = userInfo.Role_Id,
                            Token = token
                        });

                        await _userContext.SaveChangesAsync();
                    }
                }
                catch (Exception ex)
                {
                    // 记录异常，避免后台线程未捕获异常引发崩溃
                    Console.WriteLine($"[UserAuth Insert Error]: {ex.Message}");
                }
            });

            return new UserInfoDto()
            {
                Enable = userInfo.Enable,
                PhoneNo = userInfo.PhoneNo,
                RoleName = userInfo.RoleName,
                Role_Id = userInfo.Role_Id,
                UserName = userInfo.UserName,
                UserTrueName = userInfo.UserName,
                User_Id = userInfo.User_Id,
                Token = token
            };
        }

        private async Task<WeChatSession> GetWeChatSession(string code)
        {
            string url = $"https://api.weixin.qq.com/sns/jscode2session?appid={AppSettings.WeChat.Appid}&secret={AppSettings.WeChat.Secret}&js_code={code}&grant_type=authorization_code";

            using (var client = new HttpClient())
            {
                var response = await client.GetAsync(url);
                var content = await response.Content.ReadAsStringAsync();
                return JsonSerializer.Deserialize<WeChatSession>(content);
            }
        }

        /// <summary>
        /// 刷新Token
        /// </summary> 
        /// <returns></returns>
        public async Task<UserInfoDto> ReplaceToken(string requestToken)
        {
            string error = "";
            UserInfoDto userInfo = new UserInfoDto();
            try
            {
                var userModel = JwtHelper.SerializeJwt(requestToken);

                string token = JwtHelper.IssueJwt(new UserInfoDto()
                {
                    User_Id = userModel.User_Id,
                    UserName = userModel.UserName,
                    Role_Id = userModel.Role_Id,
                    PhoneNo = userModel.PhoneNo ?? "",
                    SchoolCode = userModel.SchoolCode,
                    UserTrueName = userModel.UserName,
                    UserNo = userModel.UserNo
                });


                userInfo.Token = token;
                userInfo.User_Id = userModel.User_Id;
                userInfo.UserName = userModel.UserName;
                userInfo.Role_Id = userModel.Role_Id;
                userInfo.RoleName = userModel.RoleName;
                userModel.UserTrueName = userModel.UserTrueName;
                userInfo.PhoneNo = userInfo.PhoneNo;
                userInfo.UserNo = userInfo.UserNo;

                var userAuthList = await _userContext.User_Auth.Where(x => x.Bind_Id == userModel.User_Id).ToListAsync();

                userAuthList.ForEach(x =>
                {
                    x.Token = token;
                });

                _userContext.UpdateRange(userAuthList);
                await _userContext.SaveChangesAsync();
            }
            catch (Exception ex)
            {
                error = ex.Message + ex.StackTrace + ex.Source;
                throw new Exception("token替换出错了..");
            }

            return userInfo;
        }

        /// <summary>
        /// 获取关联账号
        /// </summary>
        /// <returns></returns>
        public async Task<List<RelatedAccountsDto>> RelatedAccounts()
        {
            var roleId = UserLoginContext.Current.RoleId;
            var userId = UserLoginContext.Current.UserId;

            var res = await (from auth in _userContext.User_Auth
                             join user in _userContext.Users
                                 on auth.Bind_Id equals user.User_Id
                             where auth.Self_Id == userId
                             select new RelatedAccountsDto
                             {
                                 RoleId = user.Role_Id,
                                 UserId = user.User_Id,
                                 IsCurrentLogin = user.Role_Id == roleId,
                                 UserTrueName = user.UserTrueName ?? user.wx_NickName ?? "微信用户",
                                 HeadImageUrl = user.HeadImageUrl ?? "",
                                 Token = auth.Token
                             }).ToListAsync();

            return res;
        }

        /// <summary>
        /// 添加关联账号
        /// </summary>
        /// <param name="dto"></param>
        /// <returns></returns>
        public async Task AddRelatedAccounts(AddRelatedAccountsDto dto)
        {
            var userId = UserLoginContext.Current.UserId;

            var userAuth = await _userContext.User_Auth.CountAsync(x => x.Bind_Id == dto.UserId && x.Self_Id == userId && x.Bind_Id != x.Self_Id);
            if (userAuth == 0)
            {
                var myToken = await _userContext.User_Auth.Where(x => x.Self_Id == userId && x.Bind_Id == userId).Select(x => x.Token).FirstOrDefaultAsync();

                var entitys = new List<User_Auth>() {
                    new User_Auth()
                    {
                        Self_Id = userId,
                        Bind_Id = dto.UserId,
                        Role_Id = dto.RoleId,
                        Token = dto.Token
                    },
                    new User_Auth()
                    {
                        Self_Id = dto.UserId,
                        Bind_Id = userId,
                        Role_Id = dto.RoleId,
                        Token = myToken??""
                    }
                };

                await _userContext.User_Auth.AddRangeAsync(entitys);
                await _userContext.SaveChangesAsync();
            }
        }

        /// <summary>
        /// 获取个人信息
        /// </summary>
        /// <returns></returns>
        public async Task<PersonalInfoDto> PersonalInfo()
        {
            var userId = UserLoginContext.Current.UserId;

            var res = await _userContext.Users.Where(x => x.User_Id == userId).Select(x => new PersonalInfoDto()
            {
                HeadImageUrl = x.HeadImageUrl,
                Gender = x.Gender,
                BirthDate = x.BirthDate,
                Height = x.Height,
                Weight = x.Weight,
                UserTrueName = x.UserTrueName
            }).FirstOrDefaultAsync();

            return res;
        }

        /// <summary>
        /// 更新个人信息
        /// </summary>
        /// <param name="dto"></param>
        /// <returns></returns>
        public async Task UpdatePersonalInfo(PersonalInfoDto dto)
        {
            var userId = UserLoginContext.Current.UserId;

            var res = await _userContext.Users.Where(x => x.User_Id == userId).FirstAsync();

            res.HeadImageUrl = dto.HeadImageUrl;
            res.Gender = dto.Gender;
            res.BirthDate = dto.BirthDate;
            res.Height = dto.Height;
            res.Weight = dto.Weight;
            res.UserTrueName = dto.UserTrueName;

            _userContext.Users.Update(res);
            await _userContext.SaveChangesAsync();
        }

        /// <summary>
        /// 上传头像
        /// </summary>
        /// <param name="file"></param>
        /// <returns></returns>
        public async Task<string> UploadPhoto(IFormFile file)
        {
            var userName = UserLoginContext.Current.UserName;

            var url = await Task.Run(() => ALiYunOss.Upload(file, $"Upload/User/Photo/", $"{userName}—{DateTime.Now.ToUnixTimestampMilliseconds()}"));
            return url;
        }
    }
}