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<?php declare(strict_types=1); |
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namespace GSoares\GoogleTrends\Search; |
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use DateTimeImmutable; |
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use GSoares\GoogleTrends\Error\GoogleTrendsException; |
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use GSoares\GoogleTrends\Result\InterestOverTimeCollection; |
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use GSoares\GoogleTrends\Result\InterestOverTimeResult; |
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/** |
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* @author Gabriel Felipe Soares <[email protected]> |
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*/ |
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class InterestOverTimeSearch |
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{ |
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private const SEARCH_URL = 'https://trends.google.com/trends/api/widgetdata/multiline'; |
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/** |
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* @var ExploreSearch |
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*/ |
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protected $exploreSearch; |
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/** |
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* @var SearchRequest |
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*/ |
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protected $searchRequest; |
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public function __construct(ExploreSearch $exploreSearch = null, SearchRequest $searchRequest = null) |
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{ |
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$this->searchRequest = $searchRequest ?: new SearchRequest(); |
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$this->exploreSearch = $exploreSearch ?: new ExploreSearch($this->searchRequest); |
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} |
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/** |
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* @param SearchFilter $searchFilter |
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* |
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* @return InterestOverTimeCollection |
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* |
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* @throws GoogleTrendsException |
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*/ |
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public function search(SearchFilter $searchFilter): InterestOverTimeCollection |
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{ |
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$token = $this->exploreSearch |
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->search($searchFilter) |
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->getInterestOverTimeResult() |
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->getToken(); |
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$searchUrl = $this->buildQuery($searchFilter->withToken($token)); |
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$responseDecoded = $this->searchRequest->search($searchUrl); |
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if (!isset($responseDecoded['default']['timelineData'])) { |
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throw new GoogleTrendsException( |
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sprintf( |
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'Invalid google response body "%s"...', |
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substr(var_export($responseDecoded, true), 100) |
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) |
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); |
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} |
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$results = []; |
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foreach ($responseDecoded['default']['timelineData'] ?? [] as $row) { |
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if (!isset($row['time'], $row['value'])) { |
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throw new GoogleTrendsException( |
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sprintf( |
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'Google timeline list does not contain all keys. Only has: %s', |
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implode(', ', array_keys($row)) |
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) |
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); |
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} |
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$results[] = new InterestOverTimeResult( |
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(new DateTimeImmutable(date('Y-m-d H:i:s', (int)$row['time']))), |
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$row['value'], |
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(bool)($row['hasData'] ?? false) |
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); |
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} |
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return new InterestOverTimeCollection($searchUrl, ...$results); |
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} |
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private function buildQuery(SearchFilter $searchFilter): string |
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{ |
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$request = [ |
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'time' => $searchFilter->getTime(), |
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'resolution' => 'DAY', |
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'locale' => $searchFilter->getLanguage(), |
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'comparisonItem' => [ |
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[ |
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'geo' => [ |
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'country' => $searchFilter->getLocation(), |
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], |
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'complexKeywordsRestriction' => [ |
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'keyword' => [ |
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[ |
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'type' => 'BROAD', |
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'value' => $searchFilter->getSearchTerm(), |
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], |
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], |
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] |
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], |
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], |
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'requestOptions' => [ |
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'property' => '', |
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'backend' => 'IZG', |
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'category' => $searchFilter->getCategory(), |
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] |
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]; |
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$query = [ |
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'hl' => $searchFilter->getLanguage(), |
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'tz' => '-60', |
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'req' => json_encode($request), |
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'token' => $searchFilter->getToken() |
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]; |
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$queryString = str_replace( |
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[ |
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'%3A', |
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'%2C', |
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'%2B' |
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], |
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[ |
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':', |
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',', |
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'+', |
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], |
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http_build_query($query) |
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); |
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return self::SEARCH_URL . '?' . $queryString; |
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} |
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} |
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