package models

import (
	"fmt"
	"time"
)

type User struct {
	ID         string    `json:"id"`
	Provider   string    `json:"provider"` // "webcontrol" | "google"
	ProviderID string    `json:"provider_id"`
	Email      string    `json:"email"`
	Name       string    `json:"name"`
	AvatarURL  string    `json:"avatar_url"`
	CreatedAt  time.Time `json:"created_at"`
}

type Session struct {
	Token     string    `json:"token"`
	UserID    *string   `json:"user_id"`
	IsGuest   bool      `json:"is_guest"`
	GuestID   string    `json:"guest_id"`
	CreatedAt time.Time `json:"created_at"`
	ExpiresAt time.Time `json:"expires_at"`
	User      *User     `json:"user,omitempty"`
}

type Share struct {
	ID             string     `json:"id"`
	UserID         *string    `json:"user_id"`
	UserDisplay    string     `json:"user_display"`
	IsGuest        bool       `json:"is_guest"`
	Type           string     `json:"type"` // "file" | "text"
	Title          string     `json:"title"`
	StoredPath     string     `json:"stored_path"`
	FileSize       int64      `json:"file_size"`
	MimeType       string     `json:"mime_type"`
	TextContent    string     `json:"text_content"`
	ViewsCount     int        `json:"views_count"`
	DownloadsCount int        `json:"downloads_count"`
	CreatedAt      time.Time  `json:"created_at"`
	ExpiresAt      *time.Time `json:"expires_at"` // NULL si registrado, NOW+24h si guest
}

func (s *Share) FormattedSize() string {
	if s.FileSize == 0 {
		return "0 B"
	}
	const unit = 1024
	if s.FileSize < unit {
		return fmt.Sprintf("%d B", s.FileSize)
	}
	div, exp := int64(unit), 0
	for n := s.FileSize / unit; n >= unit; n /= unit {
		div *= unit
		exp++
	}
	units := []string{"KB", "MB", "GB", "TB"}
	return fmt.Sprintf("%.1f %s", float64(s.FileSize)/float64(div), units[exp])
}