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| 1 | <?php |
| 2 | declare( strict_types = 1 ); |
| 3 | |
| 4 | namespace ContentTranslation\Service; |
| 5 | |
| 6 | use MediaWiki\Json\FormatJson; |
| 7 | use Psr\Log\LoggerInterface; |
| 8 | |
| 9 | /** |
| 10 | * Service responsible for retrieving section mapping data from the CX server. |
| 11 | * |
| 12 | * It maps sections from a source article to corresponding sections in a target article |
| 13 | * and returns the results in a structured format. |
| 14 | * |
| 15 | * @license GPL-2.0-or-later |
| 16 | * @since 2025.08 |
| 17 | */ |
| 18 | class SectionMappingFetcher { |
| 19 | |
| 20 | public function __construct( |
| 21 | private readonly CxServerClient $cxServerClient, |
| 22 | private readonly LoggerInterface $logger |
| 23 | ) { |
| 24 | } |
| 25 | |
| 26 | /** |
| 27 | * Fetch section mappings from CX server for source and target articles. |
| 28 | * Returns structured data about section relationships between the articles. |
| 29 | * |
| 30 | * @param string $sourceLanguage |
| 31 | * @param string $sourceTitle |
| 32 | * @param string $targetLanguage |
| 33 | * @return array|null Array with keys: sourceSections, present, missing, or null on failure |
| 34 | */ |
| 35 | public function fetchSectionMapping( |
| 36 | string $sourceLanguage, |
| 37 | string $sourceTitle, |
| 38 | string $targetLanguage |
| 39 | ): ?array { |
| 40 | $path = "/v2/suggest/sections/" . rawurlencode( $sourceTitle ) . "/$sourceLanguage/$targetLanguage"; |
| 41 | $response = $this->cxServerClient->get( $path ); |
| 42 | |
| 43 | if ( !$response ) { |
| 44 | return null; |
| 45 | } |
| 46 | |
| 47 | $json = FormatJson::decode( $response, true ); |
| 48 | if ( !$this->isValidSectionMappingResponse( $json ) ) { |
| 49 | $this->logger->info( |
| 50 | 'Invalid section mapping response from CX server', |
| 51 | [ |
| 52 | 'sourceTitle' => $sourceTitle, |
| 53 | 'sourceLanguage' => $sourceLanguage, |
| 54 | 'targetLanguage' => $targetLanguage, |
| 55 | 'response' => $response |
| 56 | ] |
| 57 | ); |
| 58 | return null; |
| 59 | } |
| 60 | |
| 61 | $sectionData = $json['sections']; |
| 62 | return [ |
| 63 | 'sourceSections' => $sectionData['sourceSections'], |
| 64 | 'present' => $sectionData['present'] ?? [], |
| 65 | 'missing' => $sectionData['missing'] ?? [] |
| 66 | ]; |
| 67 | } |
| 68 | |
| 69 | /** |
| 70 | * Validate that the CX server response has the expected structure. |
| 71 | * |
| 72 | * @param mixed $json Decoded JSON response |
| 73 | * @return bool True if response is valid |
| 74 | */ |
| 75 | private function isValidSectionMappingResponse( $json ): bool { |
| 76 | return is_array( $json ) && |
| 77 | isset( $json['sections'] ) && |
| 78 | is_array( $json['sections'] ) && |
| 79 | isset( $json['sections']['sourceSections'] ) && |
| 80 | is_array( $json['sections']['sourceSections'] ); |
| 81 | } |
| 82 | } |