163 lines
5.4 KiB
Dart
163 lines
5.4 KiB
Dart
import 'package:dio/dio.dart';
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import 'package:logging/logging.dart';
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import 'package:photos/core/configuration.dart';
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import 'package:photos/core/event_bus.dart';
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import 'package:photos/core/network.dart';
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import 'package:photos/db/files_db.dart';
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import 'package:photos/events/local_photos_updated_event.dart';
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import 'package:photos/models/collection.dart';
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import 'package:photos/models/collection_items.dart';
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import 'package:photos/models/file.dart';
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import 'package:photos/models/location.dart';
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import 'package:photos/models/search/location_api_response.dart';
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import 'package:photos/models/search/location_search_result.dart';
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import 'package:photos/services/collections_service.dart';
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import 'package:photos/services/user_service.dart';
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class SearchService {
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Future<List<File>> _future;
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final _dio = Network.instance.getDio();
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final _config = Configuration.instance;
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final _logger = Logger((UserService).toString());
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final _collectionService = CollectionsService.instance;
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static const _maximumResultsLimit = 20;
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SearchService._privateConstructor();
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static final SearchService instance = SearchService._privateConstructor();
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Future<void> init() async {
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// Intention of delay is to give more CPU cycles to other tasks
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Future.delayed(const Duration(seconds: 5), () async {
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/* In case home screen loads before 5 seconds and user starts search,
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future will not be null.So here getAllFiles won't run again in that case. */
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if (_future == null) {
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getAllFiles();
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}
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});
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Bus.instance.on<LocalPhotosUpdatedEvent>().listen((event) {
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_future = null;
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getAllFiles();
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});
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}
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Future<List<File>> getAllFiles() async {
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if (_future != null) {
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return _future;
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}
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_future = FilesDB.instance.getAllFilesFromDB();
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return _future;
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}
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Future<List<File>> getFileSearchResults(String query) async {
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final List<File> fileSearchResults = [];
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final List<File> files = await getAllFiles();
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final nonCaseSensitiveRegexForQuery = RegExp(query, caseSensitive: false);
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for (File file in files) {
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if (fileSearchResults.length >= _maximumResultsLimit) {
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break;
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}
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if (file.title.contains(nonCaseSensitiveRegexForQuery)) {
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fileSearchResults.add(file);
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}
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}
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return fileSearchResults;
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}
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void clearCache() {
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_future = null;
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}
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Future<List<LocationSearchResult>> getLocationSearchResults(
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String query,
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) async {
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try {
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final List<File> allFiles = await SearchService.instance.getAllFiles();
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final List<LocationSearchResult> locationSearchResults = [];
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final response = await _dio.get(
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_config.getHttpEndpoint() + "/search/location",
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queryParameters: {"query": query, "limit": 4},
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options: Options(
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headers: {"X-Auth-Token": _config.getToken()},
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),
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);
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final matchedLocationSearchResults =
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LocationApiResponse.fromMap(response.data);
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for (LocationDataFromResponse locationData
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in matchedLocationSearchResults.results) {
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final List<File> filesInLocation = [];
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for (File file in allFiles) {
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if (_isValidLocation(file.location) &&
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_isLocationWithinBounds(file.location, locationData)) {
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filesInLocation.add(file);
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}
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}
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filesInLocation.sort(
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(first, second) => second.creationTime.compareTo(first.creationTime),
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);
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if (filesInLocation.isNotEmpty) {
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locationSearchResults.add(
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LocationSearchResult(locationData.place, filesInLocation),
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);
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}
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}
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return locationSearchResults;
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} on DioError catch (e) {
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_logger.info(e);
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rethrow;
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}
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}
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// getFilteredCollectionsWithThumbnail removes deleted or archived or
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// collections which don't have a file from search result
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Future<List<CollectionWithThumbnail>> getCollectionSearchResults(
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String query,
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) async {
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final nonCaseSensitiveRegexForQuery = RegExp(query, caseSensitive: false);
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/*latestCollectionFiles is to identify collections which have at least one file as we don't display
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empty collections and to get the file to pass for tumbnail */
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final List<File> latestCollectionFiles =
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await _collectionService.getLatestCollectionFiles();
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final List<CollectionWithThumbnail> collectionSearchResults = [];
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for (File file in latestCollectionFiles) {
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if (collectionSearchResults.length >= _maximumResultsLimit) {
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break;
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}
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final Collection collection =
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CollectionsService.instance.getCollectionByID(file.collectionID);
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if (!collection.isArchived() &&
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collection.name.contains(nonCaseSensitiveRegexForQuery)) {
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collectionSearchResults.add(CollectionWithThumbnail(collection, file));
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}
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}
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return collectionSearchResults;
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}
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bool _isValidLocation(Location location) {
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return location != null &&
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location.latitude != null &&
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location.latitude != 0 &&
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location.longitude != null &&
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location.longitude != 0;
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}
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bool _isLocationWithinBounds(
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Location location,
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LocationDataFromResponse locationData,
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) {
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//format returned by the api is [lng,lat,lng,lat] where indexes 0 & 1 are southwest and 2 & 3 northeast
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return location.longitude > locationData.bbox[0] &&
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location.latitude > locationData.bbox[1] &&
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location.longitude < locationData.bbox[2] &&
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location.latitude < locationData.bbox[3];
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}
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}
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