package models

import (
	"time"

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

// User 用户结构
type User struct {
	ID        uint           `gorm:"primaryKey" json:"id"`
	Username  string         `gorm:"uniqueIndex;not null;size:50" json:"username"`
	Password  string         `gorm:"not null;size:255" json:"-"` // json:"-" 表示在JSON响应中不返回密码
	Token     string         `gorm:"size:255;index" json:"-"` // 用户登录token
	Avatar    string         `gorm:"size:255" json:"avatar"`
	Nickname  string         `gorm:"size:50" json:"nickname"`
	CreatedAt time.Time      `json:"created_at"`
	UpdatedAt time.Time      `json:"updated_at"`
	DeletedAt gorm.DeletedAt `gorm:"index" json:"-"`
}

// HashPassword 加密密码
func (u *User) HashPassword(password string) error {
	hashedPassword, err := bcrypt.GenerateFromPassword([]byte(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
}

// UserData 存储所有用户的结构（用于兼容旧的文件存储方式）
type UserData map[string]User

// LoginRequest 登录请求
type LoginRequest struct {
	Username string `json:"username" binding:"required"`
	Password string `json:"password" binding:"required"`
}

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

// UserInfoResponse 用户信息响应（不包含密码）
type UserInfoResponse struct {
	Username string `json:"username"`
	Avatar   string `json:"avatar"`
	Nickname string `json:"nickname"`
}

// RegisterRequest 注册请求
type RegisterRequest struct {
	Username string `json:"username" binding:"required"`
	Password string `json:"password" binding:"required,min=6"`
	Nickname string `json:"nickname"`
}