mirror of
https://github.com/BookStackApp/BookStack.git
synced 2024-11-24 20:02:35 +01:00
545 lines
18 KiB
PHP
545 lines
18 KiB
PHP
<?php namespace BookStack\Services;
|
|
|
|
use BookStack\Book;
|
|
use BookStack\Chapter;
|
|
use BookStack\Entity;
|
|
use BookStack\Page;
|
|
use BookStack\SearchTerm;
|
|
use Illuminate\Database\Connection;
|
|
use Illuminate\Database\Query\Builder;
|
|
use Illuminate\Database\Query\JoinClause;
|
|
use Illuminate\Support\Collection;
|
|
|
|
class SearchService
|
|
{
|
|
protected $searchTerm;
|
|
protected $book;
|
|
protected $chapter;
|
|
protected $page;
|
|
protected $db;
|
|
protected $permissionService;
|
|
protected $entities;
|
|
|
|
/**
|
|
* Acceptable operators to be used in a query
|
|
* @var array
|
|
*/
|
|
protected $queryOperators = ['<=', '>=', '=', '<', '>', 'like', '!='];
|
|
|
|
/**
|
|
* SearchService constructor.
|
|
* @param SearchTerm $searchTerm
|
|
* @param Book $book
|
|
* @param Chapter $chapter
|
|
* @param Page $page
|
|
* @param Connection $db
|
|
* @param PermissionService $permissionService
|
|
*/
|
|
public function __construct(SearchTerm $searchTerm, Book $book, Chapter $chapter, Page $page, Connection $db, PermissionService $permissionService)
|
|
{
|
|
$this->searchTerm = $searchTerm;
|
|
$this->book = $book;
|
|
$this->chapter = $chapter;
|
|
$this->page = $page;
|
|
$this->db = $db;
|
|
$this->entities = [
|
|
'page' => $this->page,
|
|
'chapter' => $this->chapter,
|
|
'book' => $this->book
|
|
];
|
|
$this->permissionService = $permissionService;
|
|
}
|
|
|
|
/**
|
|
* Set the database connection
|
|
* @param Connection $connection
|
|
*/
|
|
public function setConnection(Connection $connection)
|
|
{
|
|
$this->db = $connection;
|
|
}
|
|
|
|
/**
|
|
* Search all entities in the system.
|
|
* @param string $searchString
|
|
* @param string $entityType
|
|
* @param int $page
|
|
* @param int $count
|
|
* @return array[int, Collection];
|
|
*/
|
|
public function searchEntities($searchString, $entityType = 'all', $page = 1, $count = 20)
|
|
{
|
|
$terms = $this->parseSearchString($searchString);
|
|
$entityTypes = array_keys($this->entities);
|
|
$entityTypesToSearch = $entityTypes;
|
|
$results = collect();
|
|
|
|
if ($entityType !== 'all') {
|
|
$entityTypesToSearch = $entityType;
|
|
} else if (isset($terms['filters']['type'])) {
|
|
$entityTypesToSearch = explode('|', $terms['filters']['type']);
|
|
}
|
|
|
|
$total = 0;
|
|
|
|
foreach ($entityTypesToSearch as $entityType) {
|
|
if (!in_array($entityType, $entityTypes)) {
|
|
continue;
|
|
}
|
|
$search = $this->searchEntityTable($terms, $entityType, $page, $count);
|
|
$total += $this->searchEntityTable($terms, $entityType, $page, $count, true);
|
|
$results = $results->merge($search);
|
|
}
|
|
|
|
return [
|
|
'total' => $total,
|
|
'count' => count($results),
|
|
'results' => $results->sortByDesc('score')->values()
|
|
];
|
|
}
|
|
|
|
|
|
/**
|
|
* Search a book for entities
|
|
* @param integer $bookId
|
|
* @param string $searchString
|
|
* @return Collection
|
|
*/
|
|
public function searchBook($bookId, $searchString)
|
|
{
|
|
$terms = $this->parseSearchString($searchString);
|
|
$entityTypes = ['page', 'chapter'];
|
|
$entityTypesToSearch = isset($terms['filters']['type']) ? explode('|', $terms['filters']['type']) : $entityTypes;
|
|
|
|
$results = collect();
|
|
foreach ($entityTypesToSearch as $entityType) {
|
|
if (!in_array($entityType, $entityTypes)) {
|
|
continue;
|
|
}
|
|
$search = $this->buildEntitySearchQuery($terms, $entityType)->where('book_id', '=', $bookId)->take(20)->get();
|
|
$results = $results->merge($search);
|
|
}
|
|
return $results->sortByDesc('score')->take(20);
|
|
}
|
|
|
|
/**
|
|
* Search a book for entities
|
|
* @param integer $chapterId
|
|
* @param string $searchString
|
|
* @return Collection
|
|
*/
|
|
public function searchChapter($chapterId, $searchString)
|
|
{
|
|
$terms = $this->parseSearchString($searchString);
|
|
$pages = $this->buildEntitySearchQuery($terms, 'page')->where('chapter_id', '=', $chapterId)->take(20)->get();
|
|
return $pages->sortByDesc('score');
|
|
}
|
|
|
|
/**
|
|
* Search across a particular entity type.
|
|
* @param array $terms
|
|
* @param string $entityType
|
|
* @param int $page
|
|
* @param int $count
|
|
* @param bool $getCount Return the total count of the search
|
|
* @return \Illuminate\Database\Eloquent\Collection|int|static[]
|
|
*/
|
|
public function searchEntityTable($terms, $entityType = 'page', $page = 1, $count = 20, $getCount = false)
|
|
{
|
|
$query = $this->buildEntitySearchQuery($terms, $entityType);
|
|
if ($getCount) {
|
|
return $query->count();
|
|
}
|
|
|
|
$query = $query->skip(($page-1) * $count)->take($count);
|
|
return $query->get();
|
|
}
|
|
|
|
/**
|
|
* Create a search query for an entity
|
|
* @param array $terms
|
|
* @param string $entityType
|
|
* @return \Illuminate\Database\Eloquent\Builder
|
|
*/
|
|
protected function buildEntitySearchQuery($terms, $entityType = 'page')
|
|
{
|
|
$entity = $this->getEntity($entityType);
|
|
$entitySelect = $entity->newQuery();
|
|
|
|
// Handle normal search terms
|
|
if (count($terms['search']) > 0) {
|
|
$subQuery = $this->db->table('search_terms')->select('entity_id', 'entity_type', \DB::raw('SUM(score) as score'));
|
|
$subQuery->where('entity_type', '=', 'BookStack\\' . ucfirst($entityType));
|
|
$subQuery->where(function (Builder $query) use ($terms) {
|
|
foreach ($terms['search'] as $inputTerm) {
|
|
$query->orWhere('term', 'like', $inputTerm .'%');
|
|
}
|
|
})->groupBy('entity_type', 'entity_id');
|
|
$entitySelect->join(\DB::raw('(' . $subQuery->toSql() . ') as s'), function (JoinClause $join) {
|
|
$join->on('id', '=', 'entity_id');
|
|
})->selectRaw($entity->getTable().'.*, s.score')->orderBy('score', 'desc');
|
|
$entitySelect->mergeBindings($subQuery);
|
|
}
|
|
|
|
// Handle exact term matching
|
|
if (count($terms['exact']) > 0) {
|
|
$entitySelect->where(function (\Illuminate\Database\Eloquent\Builder $query) use ($terms, $entity) {
|
|
foreach ($terms['exact'] as $inputTerm) {
|
|
$query->where(function (\Illuminate\Database\Eloquent\Builder $query) use ($inputTerm, $entity) {
|
|
$query->where('name', 'like', '%'.$inputTerm .'%')
|
|
->orWhere($entity->textField, 'like', '%'.$inputTerm .'%');
|
|
});
|
|
}
|
|
});
|
|
}
|
|
|
|
// Handle tag searches
|
|
foreach ($terms['tags'] as $inputTerm) {
|
|
$this->applyTagSearch($entitySelect, $inputTerm);
|
|
}
|
|
|
|
// Handle filters
|
|
foreach ($terms['filters'] as $filterTerm => $filterValue) {
|
|
$functionName = camel_case('filter_' . $filterTerm);
|
|
if (method_exists($this, $functionName)) {
|
|
$this->$functionName($entitySelect, $entity, $filterValue);
|
|
}
|
|
}
|
|
|
|
return $this->permissionService->enforceEntityRestrictions($entityType, $entitySelect, 'view');
|
|
}
|
|
|
|
|
|
/**
|
|
* Parse a search string into components.
|
|
* @param $searchString
|
|
* @return array
|
|
*/
|
|
protected function parseSearchString($searchString)
|
|
{
|
|
$terms = [
|
|
'search' => [],
|
|
'exact' => [],
|
|
'tags' => [],
|
|
'filters' => []
|
|
];
|
|
|
|
$patterns = [
|
|
'exact' => '/"(.*?)"/',
|
|
'tags' => '/\[(.*?)\]/',
|
|
'filters' => '/\{(.*?)\}/'
|
|
];
|
|
|
|
// Parse special terms
|
|
foreach ($patterns as $termType => $pattern) {
|
|
$matches = [];
|
|
preg_match_all($pattern, $searchString, $matches);
|
|
if (count($matches) > 0) {
|
|
$terms[$termType] = $matches[1];
|
|
$searchString = preg_replace($pattern, '', $searchString);
|
|
}
|
|
}
|
|
|
|
// Parse standard terms
|
|
foreach (explode(' ', trim($searchString)) as $searchTerm) {
|
|
if ($searchTerm !== '') {
|
|
$terms['search'][] = $searchTerm;
|
|
}
|
|
}
|
|
|
|
// Split filter values out
|
|
$splitFilters = [];
|
|
foreach ($terms['filters'] as $filter) {
|
|
$explodedFilter = explode(':', $filter, 2);
|
|
$splitFilters[$explodedFilter[0]] = (count($explodedFilter) > 1) ? $explodedFilter[1] : '';
|
|
}
|
|
$terms['filters'] = $splitFilters;
|
|
|
|
return $terms;
|
|
}
|
|
|
|
/**
|
|
* Get the available query operators as a regex escaped list.
|
|
* @return mixed
|
|
*/
|
|
protected function getRegexEscapedOperators()
|
|
{
|
|
$escapedOperators = [];
|
|
foreach ($this->queryOperators as $operator) {
|
|
$escapedOperators[] = preg_quote($operator);
|
|
}
|
|
return join('|', $escapedOperators);
|
|
}
|
|
|
|
/**
|
|
* Apply a tag search term onto a entity query.
|
|
* @param \Illuminate\Database\Eloquent\Builder $query
|
|
* @param string $tagTerm
|
|
* @return mixed
|
|
*/
|
|
protected function applyTagSearch(\Illuminate\Database\Eloquent\Builder $query, $tagTerm)
|
|
{
|
|
preg_match("/^(.*?)((".$this->getRegexEscapedOperators().")(.*?))?$/", $tagTerm, $tagSplit);
|
|
$query->whereHas('tags', function (\Illuminate\Database\Eloquent\Builder $query) use ($tagSplit) {
|
|
$tagName = $tagSplit[1];
|
|
$tagOperator = count($tagSplit) > 2 ? $tagSplit[3] : '';
|
|
$tagValue = count($tagSplit) > 3 ? $tagSplit[4] : '';
|
|
$validOperator = in_array($tagOperator, $this->queryOperators);
|
|
if (!empty($tagOperator) && !empty($tagValue) && $validOperator) {
|
|
if (!empty($tagName)) {
|
|
$query->where('name', '=', $tagName);
|
|
}
|
|
if (is_numeric($tagValue) && $tagOperator !== 'like') {
|
|
// We have to do a raw sql query for this since otherwise PDO will quote the value and MySQL will
|
|
// search the value as a string which prevents being able to do number-based operations
|
|
// on the tag values. We ensure it has a numeric value and then cast it just to be sure.
|
|
$tagValue = (float) trim($query->getConnection()->getPdo()->quote($tagValue), "'");
|
|
$query->whereRaw("value ${tagOperator} ${tagValue}");
|
|
} else {
|
|
$query->where('value', $tagOperator, $tagValue);
|
|
}
|
|
} else {
|
|
$query->where('name', '=', $tagName);
|
|
}
|
|
});
|
|
return $query;
|
|
}
|
|
|
|
/**
|
|
* Get an entity instance via type.
|
|
* @param $type
|
|
* @return Entity
|
|
*/
|
|
protected function getEntity($type)
|
|
{
|
|
return $this->entities[strtolower($type)];
|
|
}
|
|
|
|
/**
|
|
* Index the given entity.
|
|
* @param Entity $entity
|
|
*/
|
|
public function indexEntity(Entity $entity)
|
|
{
|
|
$this->deleteEntityTerms($entity);
|
|
$nameTerms = $this->generateTermArrayFromText($entity->name, 5);
|
|
$bodyTerms = $this->generateTermArrayFromText($entity->getText(), 1);
|
|
$terms = array_merge($nameTerms, $bodyTerms);
|
|
foreach ($terms as $index => $term) {
|
|
$terms[$index]['entity_type'] = $entity->getMorphClass();
|
|
$terms[$index]['entity_id'] = $entity->id;
|
|
}
|
|
$this->searchTerm->newQuery()->insert($terms);
|
|
}
|
|
|
|
/**
|
|
* Index multiple Entities at once
|
|
* @param Entity[] $entities
|
|
*/
|
|
protected function indexEntities($entities)
|
|
{
|
|
$terms = [];
|
|
foreach ($entities as $entity) {
|
|
$nameTerms = $this->generateTermArrayFromText($entity->name, 5);
|
|
$bodyTerms = $this->generateTermArrayFromText($entity->getText(), 1);
|
|
foreach (array_merge($nameTerms, $bodyTerms) as $term) {
|
|
$term['entity_id'] = $entity->id;
|
|
$term['entity_type'] = $entity->getMorphClass();
|
|
$terms[] = $term;
|
|
}
|
|
}
|
|
|
|
$chunkedTerms = array_chunk($terms, 500);
|
|
foreach ($chunkedTerms as $termChunk) {
|
|
$this->searchTerm->newQuery()->insert($termChunk);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Delete and re-index the terms for all entities in the system.
|
|
*/
|
|
public function indexAllEntities()
|
|
{
|
|
$this->searchTerm->truncate();
|
|
|
|
// Chunk through all books
|
|
$this->book->chunk(1000, function ($books) {
|
|
$this->indexEntities($books);
|
|
});
|
|
|
|
// Chunk through all chapters
|
|
$this->chapter->chunk(1000, function ($chapters) {
|
|
$this->indexEntities($chapters);
|
|
});
|
|
|
|
// Chunk through all pages
|
|
$this->page->chunk(1000, function ($pages) {
|
|
$this->indexEntities($pages);
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Delete related Entity search terms.
|
|
* @param Entity $entity
|
|
*/
|
|
public function deleteEntityTerms(Entity $entity)
|
|
{
|
|
$entity->searchTerms()->delete();
|
|
}
|
|
|
|
/**
|
|
* Create a scored term array from the given text.
|
|
* @param $text
|
|
* @param float|int $scoreAdjustment
|
|
* @return array
|
|
*/
|
|
protected function generateTermArrayFromText($text, $scoreAdjustment = 1)
|
|
{
|
|
$tokenMap = []; // {TextToken => OccurrenceCount}
|
|
$splitChars = " \n\t.,!?:;()[]{}<>`'\"";
|
|
$token = strtok($text, $splitChars);
|
|
|
|
while ($token !== false) {
|
|
if (!isset($tokenMap[$token])) {
|
|
$tokenMap[$token] = 0;
|
|
}
|
|
$tokenMap[$token]++;
|
|
$token = strtok($splitChars);
|
|
}
|
|
|
|
$terms = [];
|
|
foreach ($tokenMap as $token => $count) {
|
|
$terms[] = [
|
|
'term' => $token,
|
|
'score' => $count * $scoreAdjustment
|
|
];
|
|
}
|
|
return $terms;
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
* Custom entity search filters
|
|
*/
|
|
|
|
protected function filterUpdatedAfter(\Illuminate\Database\Eloquent\Builder $query, Entity $model, $input)
|
|
{
|
|
try {
|
|
$date = date_create($input);
|
|
} catch (\Exception $e) {
|
|
return;
|
|
}
|
|
$query->where('updated_at', '>=', $date);
|
|
}
|
|
|
|
protected function filterUpdatedBefore(\Illuminate\Database\Eloquent\Builder $query, Entity $model, $input)
|
|
{
|
|
try {
|
|
$date = date_create($input);
|
|
} catch (\Exception $e) {
|
|
return;
|
|
}
|
|
$query->where('updated_at', '<', $date);
|
|
}
|
|
|
|
protected function filterCreatedAfter(\Illuminate\Database\Eloquent\Builder $query, Entity $model, $input)
|
|
{
|
|
try {
|
|
$date = date_create($input);
|
|
} catch (\Exception $e) {
|
|
return;
|
|
}
|
|
$query->where('created_at', '>=', $date);
|
|
}
|
|
|
|
protected function filterCreatedBefore(\Illuminate\Database\Eloquent\Builder $query, Entity $model, $input)
|
|
{
|
|
try {
|
|
$date = date_create($input);
|
|
} catch (\Exception $e) {
|
|
return;
|
|
}
|
|
$query->where('created_at', '<', $date);
|
|
}
|
|
|
|
protected function filterCreatedBy(\Illuminate\Database\Eloquent\Builder $query, Entity $model, $input)
|
|
{
|
|
if (!is_numeric($input) && $input !== 'me') {
|
|
return;
|
|
}
|
|
if ($input === 'me') {
|
|
$input = user()->id;
|
|
}
|
|
$query->where('created_by', '=', $input);
|
|
}
|
|
|
|
protected function filterUpdatedBy(\Illuminate\Database\Eloquent\Builder $query, Entity $model, $input)
|
|
{
|
|
if (!is_numeric($input) && $input !== 'me') {
|
|
return;
|
|
}
|
|
if ($input === 'me') {
|
|
$input = user()->id;
|
|
}
|
|
$query->where('updated_by', '=', $input);
|
|
}
|
|
|
|
protected function filterInName(\Illuminate\Database\Eloquent\Builder $query, Entity $model, $input)
|
|
{
|
|
$query->where('name', 'like', '%' .$input. '%');
|
|
}
|
|
|
|
protected function filterInTitle(\Illuminate\Database\Eloquent\Builder $query, Entity $model, $input)
|
|
{
|
|
$this->filterInName($query, $model, $input);
|
|
}
|
|
|
|
protected function filterInBody(\Illuminate\Database\Eloquent\Builder $query, Entity $model, $input)
|
|
{
|
|
$query->where($model->textField, 'like', '%' .$input. '%');
|
|
}
|
|
|
|
protected function filterIsRestricted(\Illuminate\Database\Eloquent\Builder $query, Entity $model, $input)
|
|
{
|
|
$query->where('restricted', '=', true);
|
|
}
|
|
|
|
protected function filterViewedByMe(\Illuminate\Database\Eloquent\Builder $query, Entity $model, $input)
|
|
{
|
|
$query->whereHas('views', function ($query) {
|
|
$query->where('user_id', '=', user()->id);
|
|
});
|
|
}
|
|
|
|
protected function filterNotViewedByMe(\Illuminate\Database\Eloquent\Builder $query, Entity $model, $input)
|
|
{
|
|
$query->whereDoesntHave('views', function ($query) {
|
|
$query->where('user_id', '=', user()->id);
|
|
});
|
|
}
|
|
|
|
protected function filterSortBy(\Illuminate\Database\Eloquent\Builder $query, Entity $model, $input)
|
|
{
|
|
$functionName = camel_case('sort_by_' . $input);
|
|
if (method_exists($this, $functionName)) {
|
|
$this->$functionName($query, $model);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Sorting filter options
|
|
*/
|
|
|
|
protected function sortByLastCommented(\Illuminate\Database\Eloquent\Builder $query, Entity $model)
|
|
{
|
|
$commentsTable = $this->db->getTablePrefix() . 'comments';
|
|
$morphClass = str_replace('\\', '\\\\', $model->getMorphClass());
|
|
$commentQuery = $this->db->raw('(SELECT c1.entity_id, c1.entity_type, c1.created_at as last_commented FROM '.$commentsTable.' c1 LEFT JOIN '.$commentsTable.' c2 ON (c1.entity_id = c2.entity_id AND c1.entity_type = c2.entity_type AND c1.created_at < c2.created_at) WHERE c1.entity_type = \''. $morphClass .'\' AND c2.created_at IS NULL) as comments');
|
|
|
|
$query->join($commentQuery, $model->getTable() . '.id', '=', 'comments.entity_id')->orderBy('last_commented', 'desc');
|
|
}
|
|
}
|