<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\Storage;

class Document extends Model
{
    protected $fillable = [
        'documentable_type', 'documentable_id',
        'name', 'file_path', 'file_type', 'file_size', 'uploaded_by',
    ];

    public function documentable()
    {
        return $this->morphTo();
    }

    public function uploader()
    {
        return $this->belongsTo(User::class, 'uploaded_by');
    }

    public function getUrlAttribute(): string
    {
        return Storage::disk('public')->url($this->file_path);
    }

    public function getFormattedSizeAttribute(): string
    {
        $bytes = $this->file_size ?? 0;
        if ($bytes < 1024) return "{$bytes} B";
        if ($bytes < 1048576) return round($bytes / 1024, 1) . ' KB';
        return round($bytes / 1048576, 1) . ' MB';
    }
}