<?php

namespace App;

use App\AlbumSources\IAlbumSource;
use App\AlbumSources\LocalFilesystemSource;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Http\Request;
use Illuminate\Notifications\Notifiable;

class Album extends Model
{
    use Notifiable;

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'name', 'description', 'url_alias'
    ];

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

    public function fromRequest(Request $request)
    {
        $this->name = $request->get('name');
        $this->description = $request->get('description');
        $this->generateAlias();

        return $this;
    }

    public function generateAlias()
    {
        $this->url_alias = ucfirst(preg_replace('/[^a-z0-9\-]/', '-', strtolower($this->name)));
    }

    /**
     * @return IAlbumSource
     */
    public function getAlbumSource()
    {
        // TODO allow albums to specify different storage locations - e.g. Amazon S3, SFTP/FTP, OpenStack
        return new LocalFilesystemSource(dirname(__DIR__) . '/storage/app/albums');
    }

    public function photos()
    {
        return $this->hasMany(Photo::class);
    }

    public function thumbnailUrl($thumbnailName)
    {
        $photo = Photo::where('album_id', $this->id)->first();

        if (!is_null($photo))
        {
            return $this->getAlbumSource()->getUrlToPhoto($this, $photo, $thumbnailName);
        }
        
        return '';
    }

    public function url()
    {
        return sprintf('/%s', urlencode($this->url_alias));
    }
}