koel/app/Services/SmartPlaylistService.php

40 lines
1.3 KiB
PHP

<?php
namespace App\Services;
use App\Exceptions\NonSmartPlaylistException;
use App\Models\Playlist;
use App\Models\Song;
use App\Values\SmartPlaylistRule;
use App\Values\SmartPlaylistRuleGroup;
use Illuminate\Contracts\Auth\Guard;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Support\Collection;
class SmartPlaylistService
{
public function __construct(private Guard $auth)
{
}
/** @return Collection|array<array-key, Song> */
public function getSongs(Playlist $playlist): Collection
{
throw_unless($playlist->is_smart, NonSmartPlaylistException::create($playlist));
$query = Song::withMeta($this->auth->user());
$playlist->rule_groups->each(static function (SmartPlaylistRuleGroup $group, int $index) use ($query): void {
$clause = $index === 0 ? 'where' : 'orWhere';
$query->$clause(static function (Builder $subQuery) use ($group): void {
$group->rules->each(static function (SmartPlaylistRule $rule) use ($subQuery): void {
$subWhere = $rule->operator === SmartPlaylistRule::OPERATOR_IS_BETWEEN ? 'whereBetween' : 'where';
$subQuery->$subWhere(...$rule->toCriteriaParameters());
});
});
});
return $query->orderBy('songs.title')->get();
}
}