package service

import (
	"github.com/pkg/errors"

	"github.com/zhilv666/navsite/internal/model"
)

func GetUserByID(id uint) (*model.User, error) {
	var user model.User
	if err := DB().First(&user, id).Error; err != nil {
		return nil, errors.Wrapf(err, "failed get old user")
	}
	return &user, nil
}

func GetUserByName(username string) (*model.User, error) {
	user := model.User{Username: username}
	if err := DB().Where(user).First(&user).Error; err != nil {
		return nil, errors.Wrapf(err, "failed get old user")
	}
	return &user, nil
}

func GetUsers(pageIndex, pageSize int) (users []*model.User, count int64, err error) {
	userDB := DB().Model(&model.User{})
	if err := userDB.Count(&count).Error; err != nil {
		return nil, 0, errors.Wrapf(err, "failed get counts")
	}
	if err := userDB.Order(columnName("id")).Offset((pageIndex - 1) * pageSize).Limit(pageSize).Find(&users).Error; err != nil {
		return nil, 0, errors.Wrapf(err, "failed get users")
	}
	return users, count, nil
}

func AddUser(user *model.User) error {
	return errors.WithStack(DB().Create(&user).Error)
}

func UpdateUser(user *model.User) error {
	return errors.WithStack(DB().Save(&user).Error)
}

func DeleteUser(id uint) error {
	return errors.WithStack(DB().Delete(&model.User{}, id).Error)
}