package models

import (
	"errors"
	"golang.org/x/crypto/bcrypt"
	"time"
)

type Role int32

const (
	RoleParticipant Role = 0
	RoleModerator   Role = 1
	RoleAdmin       Role = 2
)

func (role Role) IsAdmin() bool {
	return role == RoleAdmin
}

func (role Role) IsModerator() bool {
	return role == RoleModerator
}

func (role Role) IsParticipant() bool {
	return role == RoleParticipant
}

func (role Role) AtLeast(other Role) bool {
	return role >= other
}

func (role Role) AtMost(other Role) bool {
	return role <= other
}

type User struct {
	Id             int32     `db:"id"`
	Username       string    `db:"username"`
	HashedPassword string    `db:"hashed_pwd"`
	CreatedAt      time.Time `db:"created_at"`
	ModifiedAt     time.Time `db:"modified_at"`
	Role           Role      `db:"role"`
}

func (user *User) ComparePassword(password string) error {
	err := bcrypt.CompareHashAndPassword([]byte(user.HashedPassword), []byte(password))
	if err != nil {
		return errors.New("bad username or password")
	}
	return nil
}