package model

import (
	"time"

	"github.com/jinzhu/gorm"
	"golang.org/x/crypto/bcrypt"
)

// User 用户模型
type User struct {
	ID        uint      `json:"id" gorm:"primary_key;auto_increment"`
	Name      string    `json:"name" gorm:"type:varchar(100);not null;unique_index"`
	Password  string    `json:"-" gorm:"type:varchar(255);not null"`
	Status    int       `json:"status" gorm:"type:tinyint;default:1;comment:'用户状态 1:正常 0:禁用'"`
	CreatedAt time.Time `json:"created_at" gorm:"type:datetime;not null"`
	UpdatedAt time.Time `json:"updated_at" gorm:"type:datetime;not null"`
}

// TableName 指定表名
func (User) TableName() string {
	return "user"
}

// BeforeCreate 创建前钩子
func (u *User) BeforeCreate(scope *gorm.Scope) error {
	if u.Password != "" {
		hashedPassword, err := bcrypt.GenerateFromPassword([]byte(u.Password), bcrypt.DefaultCost)
		if err != nil {
			return err
		}
		u.Password = string(hashedPassword)
	}
	return nil
}

// CheckPassword 验证密码
func (u *User) CheckPassword(password string) bool {
	err := bcrypt.CompareHashAndPassword([]byte(u.Password), []byte(password))
	return err == nil
}

// SetPassword 设置密码
func (u *User) SetPassword(password string) error {
	hashedPassword, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
	if err != nil {
		return err
	}
	u.Password = string(hashedPassword)
	return nil
}

// UserRegisterRequest 用户注册请求
type UserRegisterRequest struct {
	Name     string `json:"name" binding:"required,min=3,max=50" example:"testuser"`
	Password string `json:"password" binding:"required,min=6,max=100" example:"password123"`
}

// UserLoginRequest 用户登录请求
type UserLoginRequest struct {
	Name     string `json:"name" binding:"required" example:"testuser"`
	Password string `json:"password" binding:"required" example:"password123"`
}

// UserResponse 用户响应
type UserResponse struct {
	ID        uint      `json:"id"`
	Name      string    `json:"name"`
	Status    int       `json:"status"`
	CreatedAt time.Time `json:"created_at"`
	UpdatedAt time.Time `json:"updated_at"`
}

// ToResponse 转换为响应格式
func (u *User) ToResponse() *UserResponse {
	return &UserResponse{
		ID:        u.ID,
		Name:      u.Name,
		Status:    u.Status,
		CreatedAt: u.CreatedAt,
		UpdatedAt: u.UpdatedAt,
	}
}

// LoginResponse 登录响应
type LoginResponse struct {
	User  *UserResponse `json:"user"`
	Token string        `json:"token"`
}

// IsActive 检查用户是否激活
func (u *User) IsActive() bool {
	return u.Status == 1
}