package models

import (
	"time"

	"golang.org/x/crypto/bcrypt"
	"gorm.io/gorm"
)

// Account status constants.
const (
	StatusDisabled    = 0 // 禁用
	StatusNormal      = 1 // 正常
	StatusLocked      = 2 // 锁定
	StatusUnactivated = 3 // 未激活
)

// Role constants.
const (
	RoleAdmin  = "admin"
	RoleAuthor = "author"
)

// User represents a blog user (author / admin).
type User struct {
	gorm.Model
	Username    string     `gorm:"uniqueIndex;not null;size:255" json:"username"`
	Password    string     `gorm:"not null" json:"-"`
	DisplayName string     `gorm:"size:255" json:"display_name"`
	Avatar      string     `gorm:"size:512" json:"avatar"`
	Birthday    *time.Time `json:"birthday"`
	Gender      string     `gorm:"size:16" json:"gender"`
	Email       string     `gorm:"size:255" json:"email"`
	Status      int        `gorm:"default:1" json:"status"`
	Role        string     `gorm:"size:32;default:author" json:"role"`
}

// SetPassword hashes the plain-text password with bcrypt and stores it.
func (u *User) SetPassword(plain string) error {
	hash, err := bcrypt.GenerateFromPassword([]byte(plain), bcrypt.DefaultCost)
	if err != nil {
		return err
	}
	u.Password = string(hash)
	return nil
}

// CheckPassword compares a plain-text password against the stored bcrypt hash.
func (u *User) CheckPassword(plain string) bool {
	err := bcrypt.CompareHashAndPassword([]byte(u.Password), []byte(plain))
	return err == nil
}