// Package domain contains business logic entities and interfaces.
package domain

import (
	"time"

	"github.com/google/uuid"
)

// User represents a registered user in the system.
type User struct {
	ID           uuid.UUID `json:"id"`
	Email        string    `json:"email"`
	PasswordHash string    `json:"-"` // Never expose in JSON
	IsAdmin      bool      `json:"is_admin"`
	CreatedAt    time.Time `json:"created_at"`
	UpdatedAt    time.Time `json:"updated_at"`
	Role         string    `json:"role"`
}

const (
	RoleAdmin = "admin"
	RoleUser  = "user"
)

// UserRepository defines the interface for user persistence.ss.
type UserRepository interface {
	Create(user *User) error
	GetByEmail(email string) (*User, error)
	GetByID(id uuid.UUID) (*User, error)
	Exists(email string) (bool, error)
	List() ([]*User, error)
	Delete(id uuid.UUID) error
}