<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Attributes\Fillable;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\MorphTo;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\Storage;

#[Fillable(['user_id', 'kind', 'disk', 'path', 'original_name', 'mime_type', 'size', 'caption'])]
class Attachment extends Model
{
    public function attachable(): MorphTo
    {
        return $this->morphTo();
    }

    public function user(): BelongsTo
    {
        return $this->belongsTo(User::class);
    }

    public function publicUrl(): string
    {
        if ($this->disk === 'public') {
            return asset('storage/'.$this->path);
        }

        return Storage::disk($this->disk)->url($this->path);
    }

    public function formattedSize(): string
    {
        $bytes = max(0, (int) $this->size);

        if ($bytes >= 1048576) {
            return round($bytes / 1048576, 1).' MB';
        }

        if ($bytes >= 1024) {
            return round($bytes / 1024, 1).' KB';
        }

        return $bytes.' B';
    }

    public function isImage(): bool
    {
        return str_starts_with((string) $this->mime_type, 'image/');
    }
}