package service

import (
	"crypto/md5"
	"encoding/hex"
	"errors"
	"knowledge/api/dao"
	"knowledge/api/dto"
	"knowledge/api/requests"
	"knowledge/utils"
	"strconv"
)

// AdminUserService 后台用户
type AdminUserService struct {
}

func (r *AdminUserService) Login(req requests.Login) (res *dto.AdminUserDto, err error) {
	// 获取用户信息
	AdminUserDao := dao.AdminUserDao{}
	adminUser, err := AdminUserDao.GetAdminUserFirstByAccess(req.Access)
	if err != nil || adminUser == nil {
		return nil, errors.New("用户名或密码错误")
	}

	// 检测用户密码
	password := md5.Sum([]byte(req.Password + adminUser.Salt))
	// 将哈希值转换为16进制字符串
	passwordString := hex.EncodeToString(password[:])

	if passwordString != adminUser.Password {
		return nil, errors.New("用户名或密码错误")
	}

	// 检测用户状态
	if adminUser.IsDeleted == 1 {
		return nil, errors.New("非法用户")
	}

	if adminUser.IsDisabled == 1 {
		return nil, errors.New("您的账号已被禁用，请联系管理员处理")
	}

	// 检测用户状态
	if adminUser.Status != 1 {
		return nil, errors.New("您的账号已被禁用，请联系管理员处理")
	}

	token := &utils.Token{
		UserId: strconv.FormatInt(adminUser.UserId, 10),
	}

	// 生成jwt
	jwt, err := token.NewJWT()
	if err != nil {
		return nil, errors.New("登陆失败")
	}

	// 处理返回值
	g := dto.LoginDto(adminUser)

	// 加载token
	g.LoadUserDoctor(jwt)

	return g, nil
}