package system

import (
	"errors"
	"fmt"
	"server/dao"
	"time"

	"github.com/gofrs/uuid/v5"
	"gorm.io/gorm"
	"server/global"
	"server/model/common/request"
	"server/utils"
)

//@author: [piexlmax](https://github.com/piexlmax)
//@function: Register
//@description: 用户注册
//@param: u model.SysUser
//@return: userInter system.SysUser, err error

type UserService struct{}

func (userService *UserService) Register(u dao.SysUser) (userInter dao.SysUser, err error) {
	_, err = dao.QueryUserByUserName(u.Username)
	if !errors.Is(err, gorm.ErrRecordNotFound) { // 判断用户名是否注册
		return userInter, errors.New("用户名已注册")
	}
	// 否则 附加uuid 密码hash加密 注册
	u.Password = utils.BcryptHash(u.Password)
	u.UUID = uuid.Must(uuid.NewV4())
	err = u.CreateUser()
	return u, err
}

//@author: [piexlmax](https://github.com/piexlmax)
//@author: [SliverHorn](https://github.com/SliverHorn)
//@function: Login
//@description: 用户登录
//@param: u *model.SysUser
//@return: err error, userInter *model.SysUser

func (userService *UserService) Login(u *dao.SysUser) (userInter *dao.SysUser, err error) {
	if nil == global.GVA_DB {
		return nil, fmt.Errorf("db not init")
	}

	user, err := dao.QueryUserAndAuthorityByUserName(u.Username)

	if err == nil {
		if ok := utils.BcryptCheck(u.Password, user.Password); !ok {
			return nil, errors.New("密码错误")
		}
		MenuServiceApp.UserAuthorityDefaultRouter(&user)
	}
	return &user, err
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: ChangePassword
//@description: 修改用户密码
//@param: u *model.SysUser, newPassword string
//@return: userInter *model.SysUser,err error

func (userService *UserService) ChangePassword(u *dao.SysUser, newPassword string) (userInter *dao.SysUser, err error) {
	user, err := dao.QueryUserByUserId(u.ID)
	if err != nil {
		return nil, err
	}
	if ok := utils.BcryptCheck(u.Password, user.Password); !ok {
		return nil, errors.New("原密码错误")
	}
	user.Password = utils.BcryptHash(newPassword)
	err = u.UpdateUser()
	return &user, err

}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: GetUserInfoList
//@description: 分页获取数据
//@param: info request.PageInfo
//@return: err error, list interface{}, total int64

func (userService *UserService) GetUserInfoList(info request.PageInfo) (list interface{}, total int64, err error) {
	limit := info.PageSize
	offset := info.PageSize * (info.Page - 1)

	userList, total, err := dao.QueryUserInfoList(limit, offset)

	return userList, total, err
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: SetUserAuthority
//@description: 设置一个用户的权限
//@param: uuid uuid.UUID, authorityId string
//@return: err error

func (userService *UserService) SetUserAuthority(id uint, authorityId uint) (err error) {
	_, assignErr := dao.QueryUserAuthority(id, authorityId)

	if errors.Is(assignErr, gorm.ErrRecordNotFound) {
		return errors.New("该用户无此角色")
	}

	return dao.UpdateUserAuthority(id, authorityId)
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: SetUserAuthorities
//@description: 设置一个用户的权限
//@param: id uint, authorityIds []string
//@return: err error

func (userService *UserService) SetUserAuthorities(id uint, authorityId uint) (err error) {
	return dao.SetUserAuthorities(id, authorityId)
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: DeleteUser
//@description: 删除用户
//@param: id float64
//@return: err error

func (userService *UserService) DeleteUser(id int) (err error) {
	return dao.DeleteUser(id)
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: SetUserInfo
//@description: 设置用户信息
//@param: reqUser model.SysUser
//@return: err error, user model.SysUser

func (userService *UserService) SetUserInfo(req dao.SysUser) error {
	req.UpdatedAt = time.Now()
	return req.SetUserInfo()
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: SetUserInfo
//@description: 设置用户信息
//@param: reqUser model.SysUser
//@return: err error, user model.SysUser

func (userService *UserService) SetSelfInfo(req dao.SysUser) error {
	return req.SetUserInfoById()
}

//@author: [piexlmax](https://github.com/piexlmax)
//@author: [SliverHorn](https://github.com/SliverHorn)
//@function: GetUserInfo
//@description: 获取用户信息
//@param: uuid uuid.UUID
//@return: err error, user system.SysUser

func (userService *UserService) GetUserInfo(uuid uuid.UUID) (user dao.SysUser, err error) {
	reqUser, err := dao.GetUserInfoByUUID(uuid)
	if err != nil {
		return reqUser, err
	}
	MenuServiceApp.UserAuthorityDefaultRouter(&reqUser)
	return reqUser, err
}

//@author: [SliverHorn](https://github.com/SliverHorn)
//@function: FindUserById
//@description: 通过id获取用户信息
//@param: id int
//@return: err error, user *model.SysUser

func (userService *UserService) FindUserById(id int) (user *dao.SysUser, err error) {
	u, err := dao.QueryUserByUserId(uint(id))
	return &u, err
}

//@author: [SliverHorn](https://github.com/SliverHorn)
//@function: FindUserByUuid
//@description: 通过uuid获取用户信息
//@param: uuid string
//@return: err error, user *model.SysUser

func (userService *UserService) FindUserByUuid(uuidStr string) (user *dao.SysUser, err error) {
	id, err := uuid.FromString(uuidStr)
	if err != nil {
		fmt.Println("Error parsing UUID:", err)
		return
	}

	u, err := dao.GetUserInfoByUUID(id)
	if err != nil {
		return &u, errors.New("用户不存在")
	}

	return &u, nil
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: resetPassword
//@description: 修改用户密码
//@param: ID uint
//@return: err error

func (userService *UserService) ResetPassword(ID uint) error {
	return dao.SysUser{
		GVA_MODEL: global.GVA_MODEL{
			ID: ID,
		},
		Password: utils.BcryptHash("123456"),
	}.SetUserInfoById()
}