<?php

namespace App;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Notifications\Notifiable;

class Photo extends Model
{
    use Notifiable;

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'album_id',
        'user_id',
        'name',
        'description',
        'file_name',
        'storage_file_name',
        'mime_type',
        'file_size',
        'metadata_version',
        'taken_at',
        'camera_make',
        'camera_model',
        'camera_software',
        'width',
        'height',
        'is_analysed',
        'raw_exif_data',
        'aperture_fnumber',
        'iso_number',
        'shutter_speed',
        'created_at',
        'updated_at'
    ];

    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = [
    ];

    public function album()
    {
        return $this->belongsTo(Album::class);
    }

    public function exifUrl()
    {
        return route('viewExifData', [
            'albumUrlAlias' => $this->album->url_path,
            'photoFilename' => $this->storage_file_name
        ]);
    }

    public function labelIDs()
    {
        $labelIDs = [];

        foreach ($this->labels()->orderBy('name')->get() as $label)
        {
            $labelIDs[] = $label->id;
        }

        return implode(',', $labelIDs);
    }

    public function labels()
    {
        return $this->belongsToMany(Label::class, 'photo_labels');
    }

    public function thumbnailUrl($thumbnailName = null, $cacheBust = true)
    {
        $url = $this->album->getAlbumSource()->getUrlToPhoto($this, $thumbnailName);

        if ($cacheBust)
        {
            // Append the timestamp of the last update to avoid browser caching
            $theDate = is_null($this->updated_at) ? $this->created_at : $this->updated_at;
            $url .= sprintf('%s_=%d', (strpos($url, '?') === false ? '?' : '&'), $theDate->format('U'));
        }

        return $url;
    }

    public function url()
    {
        return route('viewPhoto', [
            'albumUrlAlias' => $this->album->url_path,
            'photoFilename' => $this->storage_file_name
        ]);
    }
}