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<?php |
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namespace TeamTNT\Scout\Engines; |
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use Illuminate\Database\Eloquent\Collection; |
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use Laravel\Scout\Builder; |
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use Laravel\Scout\Engines\Engine; |
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use TeamTNT\TNTSearch\TNTSearch; |
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use TeamTNT\TNTSearch\Exceptions\IndexNotFoundException; |
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class TNTSearchEngine extends Engine |
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{ |
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const NO_RESULTS_COUNT = 0; |
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/** |
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* @var TNTSearch |
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*/ |
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protected $tnt; |
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/** |
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* @var Builder |
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*/ |
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protected $builder; |
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protected $modelCollection; |
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/** |
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* Create a new engine instance. |
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* |
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* @param TNTSearch $tnt |
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*/ |
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public function __construct(TNTSearch $tnt) |
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{ |
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$this->tnt = $tnt; |
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} |
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/** |
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* Update the given model in the index. |
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* |
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* @param Collection $models |
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* |
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* @return void |
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*/ |
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public function update($models) |
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{ |
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$this->initIndex($models->first()); |
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$this->tnt->selectIndex("{$models->first()->searchableAs()}.index"); |
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$index = $this->tnt->getIndex(); |
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$index->setPrimaryKey($models->first()->getKeyName()); |
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$index->indexBeginTransaction(); |
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$models->each(function ($model) use ($index) { |
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$array = $model->toSearchableArray(); |
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if (empty($array)) { |
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return; |
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} |
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if ($model->getKey()) { |
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$index->update($model->getKey(), $array); |
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} else { |
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$index->insert($array); |
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} |
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}); |
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$index->indexEndTransaction(); |
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} |
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/** |
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* Remove the given model from the index. |
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* |
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* @param Collection $models |
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* |
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* @return void |
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*/ |
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public function delete($models) |
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{ |
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$this->initIndex($models->first()); |
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$models->each(function ($model) { |
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$this->tnt->selectIndex("{$model->searchableAs()}.index"); |
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$index = $this->tnt->getIndex(); |
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$index->setPrimaryKey($model->getKeyName()); |
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$index->delete($model->getKey()); |
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}); |
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} |
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/** |
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* Perform the given search on the engine. |
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* |
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* @param Builder $builder |
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* |
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* @return mixed |
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*/ |
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public function search(Builder $builder) |
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{ |
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try { |
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return $this->performSearch($builder); |
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} catch (IndexNotFoundException $e) { |
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$this->initIndex($builder->model); |
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} |
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} |
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/** |
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* Perform the given search on the engine. |
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* |
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* @param Builder $builder |
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* @param int $perPage |
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* @param int $page |
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* |
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* @return mixed |
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*/ |
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public function paginate(Builder $builder, $perPage, $page) |
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{ |
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$results = $this->performSearch($builder); |
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if ($builder->limit) { |
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$results['hits'] = $builder->limit; |
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} |
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$chunks = array_chunk($results['ids'], $perPage); |
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if (!empty($chunks)) { |
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if (array_key_exists($page - 1, $chunks)) { |
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$results['ids'] = $chunks[$page - 1]; |
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} else { |
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$results['ids'] = end($chunks); |
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} |
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} |
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return $results; |
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} |
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/** |
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* Perform the given search on the engine. |
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* |
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* @param Builder $builder |
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* |
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* @return mixed |
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*/ |
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protected function performSearch(Builder $builder, array $options = []) |
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{ |
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$index = $builder->index ?: $builder->model->searchableAs(); |
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$limit = $builder->limit ?: 10000; |
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$this->tnt->selectIndex("{$index}.index"); |
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$this->builder = $builder; |
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$this->tnt->asYouType = $builder->model->asYouType ?: false; |
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if ($builder->callback) { |
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return call_user_func( |
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$builder->callback, |
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$this->tnt, |
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$builder->query, |
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$options |
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); |
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} |
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if (isset($this->tnt->config['searchBoolean']) ? $this->tnt->config['searchBoolean'] : false) { |
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return $this->tnt->searchBoolean($builder->query, $limit); |
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} else { |
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return $this->tnt->search($builder->query, $limit); |
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} |
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} |
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/** |
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* Get the filter array for the query. |
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* |
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* @param Builder $builder |
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* |
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* @return array |
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*/ |
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protected function filters(Builder $builder) |
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{ |
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return collect($builder->wheres)->map(function ($value, $key) { |
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return $key.'='.$value; |
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})->values()->all(); |
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} |
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/** |
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* Map the given results to instances of the given model. |
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* |
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* @param mixed $results |
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* @param \Illuminate\Database\Eloquent\Model $model |
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* |
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* @return Collection |
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*/ |
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public function map($results, $model) |
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{ |
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if (count($results['ids']) === 0) { |
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return Collection::make(); |
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} |
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return $this->modelCollection($results); |
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} |
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/** |
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* Pluck and return the primary keys of the given results. |
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* |
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* @param mixed $results |
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* @return \Illuminate\Support\Collection |
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*/ |
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public function mapIds($results) |
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{ |
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return collect($results['ids'])->values(); |
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} |
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/** |
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* Get the total count from a raw result returned by the engine. |
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* |
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* @param mixed $results |
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* |
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* @return int |
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*/ |
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public function getTotalCount($results) |
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{ |
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if (count($results['ids']) === 0) { |
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return self::NO_RESULTS_COUNT; |
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} |
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return $this->modelCollection($results)->count(); |
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} |
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public function initIndex($model) |
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{ |
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$indexName = $model->searchableAs(); |
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if (!file_exists($this->tnt->config['storage']."/{$indexName}.index")) { |
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$indexer = $this->tnt->createIndex("$indexName.index"); |
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$indexer->setDatabaseHandle($model->getConnection()->getPdo()); |
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$indexer->setPrimaryKey($model->getKeyName()); |
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} |
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} |
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protected function modelCollection($results) |
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{ |
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if (! is_null($this->modelCollection)) { |
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return $this->modelCollection; |
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} |
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$keys = collect($results['ids'])->values()->all(); |
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$fieldsWheres = array_keys($this->builder->wheres); |
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$models = $this->builder->model->whereIn( |
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$this->builder->model->getQualifiedKeyName(), $keys |
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)->get()->keyBy($this->builder->model->getKeyName()); |
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$this->modelCollection = collect($results['ids'])->map(function ($hit) use ($models) { |
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return $models->has($hit) ? $models[$hit] : null; |
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})->filter(function ($model) use ($fieldsWheres) { |
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return !is_null($model) && array_reduce($fieldsWheres, function ($carry, $item) use($model) { |
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return $carry && $model[$item] == $this->builder->wheres[$item]; |
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}, true); |
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}); |
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return $this->modelCollection; |
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} |
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} |
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