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<?php
namespace Laravel\Scout\Engines;
use Illuminate\Support\LazyCollection;
use Laravel\Scout\Builder;
use MeiliSearch\Client as MeiliSearch;
use MeiliSearch\Search\SearchResult;
class MeiliSearchEngine extends Engine
{
/**
* The MeiliSearch client.
*
* @var \MeiliSearch\Client
*/
protected $meilisearch;
/**
* Determines if soft deletes for Scout are enabled or not.
*
* @var bool
*/
protected $softDelete;
/**
* Create a new MeiliSearchEngine instance.
*
* @param \MeiliSearch\Client $meilisearch
* @param bool $softDelete
* @return void
*/
public function __construct(MeiliSearch $meilisearch, $softDelete = false)
{
$this->meilisearch = $meilisearch;
$this->softDelete = $softDelete;
}
/**
* Update the given model in the index.
*
* @param \Illuminate\Database\Eloquent\Collection $models
* @return void
*
* @throws \MeiliSearch\Exceptions\ApiException
*/
public function update($models)
{
if ($models->isEmpty()) {
return;
}
$index = $this->meilisearch->index($models->first()->searchableAs());
if ($this->usesSoftDelete($models->first()) && $this->softDelete) {
$models->each->pushSoftDeleteMetadata();
}
$objects = $models->map(function ($model) {
if (empty($searchableData = $model->toSearchableArray())) {
return;
}
return array_merge($searchableData, $model->scoutMetadata());
})->filter()->values()->all();
if (! empty($objects)) {
$index->addDocuments($objects, $models->first()->getKeyName());
}
}
/**
* Remove the given model from the index.
*
* @param \Illuminate\Database\Eloquent\Collection $models
* @return void
*/
public function delete($models)
{
$index = $this->meilisearch->index($models->first()->searchableAs());
$index->deleteDocuments(
$models->map->getScoutKey()
->values()
->all()
);
}
/**
* Perform the given search on the engine.
*
* @return mixed
*/
public function search(Builder $builder)
{
return $this->performSearch($builder, array_filter([
'filters' => $this->filters($builder),
'limit' => $builder->limit,
]));
}
/**
* Perform the given search on the engine.
*
* @param int $perPage
* @param int $page
* @return mixed
*/
public function paginate(Builder $builder, $perPage, $page)
{
return $this->performSearch($builder, array_filter([
'filters' => $this->filters($builder),
'limit' => (int) $perPage,
'offset' => ($page - 1) * $perPage,
]));
}
/**
* Perform the given search on the engine.
*
* @param \Laravel\Scout\Builder $builder
* @param array $searchParams
* @return mixed
*/
protected function performSearch(Builder $builder, array $searchParams = [])
{
$meilisearch = $this->meilisearch->index($builder->index ?: $builder->model->searchableAs());
if ($builder->callback) {
$result = call_user_func(
$builder->callback,
$meilisearch,
$builder->query,
$searchParams
);
return $result instanceof SearchResult ? $result->getRaw() : $result;
}
return $meilisearch->rawSearch($builder->query, $searchParams);
}
/**
* Get the filter array for the query.
*
* @param \Laravel\Scout\Builder $builder
* @return string
*/
protected function filters(Builder $builder)
{
$filters = collect($builder->wheres)->map(function ($value, $key) {
return is_numeric($value)
? sprintf('%s=%s', $key, $value)
: sprintf('%s="%s"', $key, $value);
});
foreach ($builder->whereIns as $key => $values) {
$filters->push(sprintf('(%s)', collect($values)->map(function ($value) use ($key) {
return filter_var($value, FILTER_VALIDATE_INT) !== false
? sprintf('%s=%s', $key, $value)
: sprintf('%s="%s"', $key, $value);
})->values()->implode(' OR ')));
}
return $filters->values()->implode(' AND ');
}
/**
* Pluck and return the primary keys of the given results.
*
* @param mixed $results
* @return \Illuminate\Support\Collection
*/
public function mapIds($results)
{
if (0 === count($results['hits'])) {
return collect();
}
$hits = collect($results['hits']);
$key = key($hits->first());
return $hits->pluck($key)->values();
}
/**
* Map the given results to instances of the given model.
*
* @param \Laravel\Scout\Builder $builder
* @param mixed $results
* @param \Illuminate\Database\Eloquent\Model $model
* @return \Illuminate\Database\Eloquent\Collection
*/
public function map(Builder $builder, $results, $model)
{
if (is_null($results) || 0 === count($results['hits'])) {
return $model->newCollection();
}
$objectIds = collect($results['hits'])->pluck($model->getKeyName())->values()->all();
$objectIdPositions = array_flip($objectIds);
return $model->getScoutModelsByIds(
$builder, $objectIds
)->filter(function ($model) use ($objectIds) {
return in_array($model->getScoutKey(), $objectIds);
})->sortBy(function ($model) use ($objectIdPositions) {
return $objectIdPositions[$model->getScoutKey()];
})->values();
}
/**
* Map the given results to instances of the given modell via a lazy collection.
*
* @param \Laravel\Scout\Builder $builder
* @param mixed $results
* @param \Illuminate\Database\Eloquent\Model $model
* @return \Illuminate\Support\LazyCollection
*/
public function lazyMap(Builder $builder, $results, $model)
{
if (count($results['hits']) === 0) {
return LazyCollection::make($model->newCollection());
}
$objectIds = collect($results['hits'])->pluck($model->getKeyName())->values()->all();
$objectIdPositions = array_flip($objectIds);
return $model->queryScoutModelsByIds(
$builder, $objectIds
)->cursor()->filter(function ($model) use ($objectIds) {
return in_array($model->getScoutKey(), $objectIds);
})->sortBy(function ($model) use ($objectIdPositions) {
return $objectIdPositions[$model->getScoutKey()];
})->values();
}
/**
* Get the total count from a raw result returned by the engine.
*
* @param mixed $results
* @return int
*/
public function getTotalCount($results)
{
return $results['nbHits'];
}
/**
* Flush all of the model's records from the engine.
*
* @param \Illuminate\Database\Eloquent\Model $model
* @return void
*/
public function flush($model)
{
$index = $this->meilisearch->index($model->searchableAs());
$index->deleteAllDocuments();
}
/**
* Create a search index.
*
* @param string $name
* @param array $options
* @return mixed
*
* @throws \MeiliSearch\Exceptions\ApiException
*/
public function createIndex($name, array $options = [])
{
return $this->meilisearch->createIndex($name, $options);
}
/**
* Delete a search index.
*
* @param string $name
* @return mixed
*
* @throws \MeiliSearch\Exceptions\ApiException
*/
public function deleteIndex($name)
{
return $this->meilisearch->deleteIndex($name);
}
/**
* Determine if the given model uses soft deletes.
*
* @param \Illuminate\Database\Eloquent\Model $model
* @return bool
*/
protected function usesSoftDelete($model)
{
return in_array(\Illuminate\Database\Eloquent\SoftDeletes::class, class_uses_recursive($model));
}
/**
* Dynamically call the MeiliSearch client instance.
*
* @param string $method
* @param array $parameters
* @return mixed
*/
public function __call($method, $parameters)
{
return $this->meilisearch->$method(...$parameters);
}
}