package models

import (
	"time"

	"gorm.io/gorm"
)

// User 用户模型
type User struct {
	ID        uint           `gorm:"primarykey" json:"id"`
	Username  string         `gorm:"size:64;uniqueIndex;not null" json:"username"`
	Password  string         `gorm:"size:255;not null" json:"-"`
	Email     string         `gorm:"size:128;uniqueIndex" json:"email"`
	Phone     string         `gorm:"size:32" json:"phone"`
	RealName  string         `gorm:"size:64" json:"real_name"`
	Avatar    string         `gorm:"size:255" json:"avatar"`
	Status    int            `gorm:"default:1" json:"status"` // 0:禁用 1:启用
	IsAdmin   bool           `gorm:"default:false" json:"is_admin"`
	LastLogin *time.Time     `json:"last_login"`
	CreatedAt time.Time      `json:"created_at"`
	UpdatedAt time.Time      `json:"updated_at"`
	DeletedAt gorm.DeletedAt `gorm:"index" json:"-"`

	// 关联
	Roles []Role `gorm:"many2many:user_roles;" json:"roles,omitempty"`
}

// TableName 表名
func (User) TableName() string {
	return "users"
}

// Role 角色模型
type Role struct {
	ID          uint           `gorm:"primarykey" json:"id"`
	Name        string         `gorm:"size:64;uniqueIndex;not null" json:"name"`
	Code        string         `gorm:"size:64;uniqueIndex;not null" json:"code"`
	Description string         `gorm:"size:255" json:"description"`
	Status      int            `gorm:"default:1" json:"status"`
	CreatedAt   time.Time      `json:"created_at"`
	UpdatedAt   time.Time      `json:"updated_at"`
	DeletedAt   gorm.DeletedAt `gorm:"index" json:"-"`

	// 关联
	Permissions []Permission `gorm:"many2many:role_permissions;" json:"permissions,omitempty"`
}

// TableName 表名
func (Role) TableName() string {
	return "roles"
}

// Permission 权限模型
type Permission struct {
	ID        uint           `gorm:"primarykey" json:"id"`
	Name      string         `gorm:"size:64;not null" json:"name"`
	Code      string         `gorm:"size:128;uniqueIndex;not null" json:"code"`
	Type      string         `gorm:"size:32" json:"type"` // menu, button, api
	Path      string         `gorm:"size:255" json:"path"`
	Method    string         `gorm:"size:32" json:"method"`
	ParentID  *uint          `json:"parent_id"`
	Sort      int            `gorm:"default:0" json:"sort"`
	Status    int            `gorm:"default:1" json:"status"`
	CreatedAt time.Time      `json:"created_at"`
	UpdatedAt time.Time      `json:"updated_at"`
	DeletedAt gorm.DeletedAt `gorm:"index" json:"-"`
}

// TableName 表名
func (Permission) TableName() string {
	return "permissions"
}

// 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"`
	ExpiresIn int    `json:"expires_in"`
	User      *User  `json:"user"`
}

// CreateUserRequest 创建用户请求
type CreateUserRequest struct {
	Username string `json:"username" binding:"required,min=3,max=64"`
	Password string `json:"password" binding:"required,min=6,max=32"`
	Email    string `json:"email" binding:"required,email"`
	Phone    string `json:"phone"`
	RealName string `json:"real_name"`
	RoleIDs  []uint `json:"role_ids"`
}

// UpdateUserRequest 更新用户请求
type UpdateUserRequest struct {
	Email    string `json:"email" binding:"omitempty,email"`
	Phone    string `json:"phone"`
	RealName string `json:"real_name"`
	Status   *int   `json:"status"`
	RoleIDs  []uint `json:"role_ids"`
}

// ChangePasswordRequest 修改密码请求
type ChangePasswordRequest struct {
	OldPassword string `json:"old_password" binding:"required"`
	NewPassword string `json:"new_password" binding:"required,min=6,max=32"`
}