app/Models/File.php


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<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use App\Models\Traits\AutoFillable;

class File extends Model
{
    use AutoFillable;    

    protected $fillable = [
        'filename',
        'path',
        'source',
        'description',
        'md5',
        'size',
        'mime_type',
        'user_id'
    ];

    public function tags()
    {
        return $this->belongsToMany(Tag::class);
    }

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

    // Helper methods for tags
    public function addTags(array $tagNames)
    {
        $tagIds = [];
        
        foreach ($tagNames as $tagName) {
            $tagName = trim($tagName);
            if (empty($tagName)) continue;
            
            // Find or create tag
            $tag = Tag::firstOrCreate(
                ['label' => $tagName],
                ['refs' => 0]
            );
            
            // Increment ref count if new relationship
            if (!$this->tags->contains($tag->id)) {
                $tag->increment('refs');
            }
            
            $tagIds[] = $tag->id;
        }
        
        if (!empty($tagIds)) {
            $this->tags()->syncWithoutDetaching($tagIds);
        }
        
        return $this;
    }
    
    public function removeTags(array $tagNames)
    {
        $tagsToRemove = Tag::whereIn('label', $tagNames)->get();
        
        foreach ($tagsToRemove as $tag) {
            $this->tags()->detach($tag->id);
            $tag->decrement('refs');
        }
        
        return $this;
    }
    
    public function getTagsString()
    {
        return $this->tags->pluck('label')->implode(', ');
    }
}