423 lines
13 KiB
Dart
423 lines
13 KiB
Dart
// @dart=2.9
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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/data/holidays.dart';
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import 'package:photos/data/months.dart';
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import 'package:photos/data/years.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/file_type.dart';
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import 'package:photos/models/location.dart';
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import 'package:photos/models/search/album_search_result.dart';
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import 'package:photos/models/search/generic_search_result.dart';
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import 'package:photos/models/search/location_api_response.dart';
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import 'package:photos/models/search/search_result.dart';
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import 'package:photos/services/collections_service.dart';
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import 'package:photos/utils/date_time_util.dart';
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import 'package:tuple/tuple.dart';
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class SearchService {
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Future<List<File>> _cachedFilesFuture;
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final _dio = Network.instance.getDio();
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final _config = Configuration.instance;
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final _logger = Logger((SearchService).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 (_cachedFilesFuture == 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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_cachedFilesFuture = 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 (_cachedFilesFuture != null) {
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return _cachedFilesFuture;
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}
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_logger.fine("Reading all files from db");
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_cachedFilesFuture = FilesDB.instance.getAllFilesFromDB();
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return _cachedFilesFuture;
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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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for (var 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.toLowerCase().contains(query.toLowerCase())) {
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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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_cachedFilesFuture = null;
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}
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Future<List<GenericSearchResult>> getLocationSearchResults(
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String query,
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) async {
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final List<GenericSearchResult> searchResults = [];
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try {
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final List<File> allFiles = await _getAllFiles();
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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": 10},
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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 (var locationData in matchedLocationSearchResults.results) {
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final List<File> filesInLocation = [];
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for (var 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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searchResults.add(
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GenericSearchResult(
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ResultType.location,
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locationData.place,
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filesInLocation,
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),
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);
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}
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}
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} catch (e) {
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_logger.severe(e);
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}
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return searchResults;
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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<AlbumSearchResult>> getCollectionSearchResults(
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String query,
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) async {
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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<AlbumSearchResult> collectionSearchResults = [];
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for (var 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.toLowerCase().contains(query.toLowerCase())) {
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collectionSearchResults
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.add(AlbumSearchResult(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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Future<List<GenericSearchResult>> getYearSearchResults(
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String yearFromQuery,
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) async {
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final List<GenericSearchResult> searchResults = [];
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for (var yearData in YearsData.instance.yearsData) {
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if (yearData.year.startsWith(yearFromQuery)) {
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final List<File> filesInYear = await _getFilesInYear(yearData.duration);
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if (filesInYear.isNotEmpty) {
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searchResults.add(
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GenericSearchResult(
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ResultType.year,
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yearData.year,
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filesInYear,
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),
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);
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}
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}
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}
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return searchResults;
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}
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Future<List<GenericSearchResult>> getHolidaySearchResults(
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String query,
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) async {
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final List<GenericSearchResult> searchResults = [];
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for (var holiday in allHolidays) {
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if (holiday.name.toLowerCase().contains(query.toLowerCase())) {
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final matchedFiles =
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await FilesDB.instance.getFilesCreatedWithinDurations(
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_getDurationsForCalendarDateInEveryYear(holiday.day, holiday.month),
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null,
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order: 'DESC',
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);
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if (matchedFiles.isNotEmpty) {
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searchResults.add(
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GenericSearchResult(ResultType.event, holiday.name, matchedFiles),
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);
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}
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}
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}
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return searchResults;
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}
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Future<List<GenericSearchResult>> getFileTypeResults(
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String query,
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) async {
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final List<GenericSearchResult> searchResults = [];
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final List<File> allFiles = await _getAllFiles();
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for (var fileType in FileType.values) {
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final String fileTypeString = getHumanReadableString(fileType);
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if (fileTypeString.toLowerCase().startsWith(query.toLowerCase())) {
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final matchedFiles =
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allFiles.where((e) => e.fileType == fileType).toList();
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if (matchedFiles.isNotEmpty) {
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searchResults.add(
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GenericSearchResult(
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ResultType.fileType,
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fileTypeString,
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matchedFiles,
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),
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);
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}
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}
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}
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return searchResults;
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}
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Future<List<GenericSearchResult>> getFileExtensionResults(
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String query,
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) async {
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final List<GenericSearchResult> searchResults = [];
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if (!query.startsWith(".")) {
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return searchResults;
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}
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final List<File> allFiles = await _getAllFiles();
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final Map<String, List<File>> resultMap = <String, List<File>>{};
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for (File eachFile in allFiles) {
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final String fileName = eachFile.displayName;
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if (fileName.contains(query)) {
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final String exnType = fileName.split(".").last.toUpperCase();
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if (!resultMap.containsKey(exnType)) {
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resultMap[exnType] = <File>[];
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}
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resultMap[exnType].add(eachFile);
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}
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}
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for (MapEntry<String, List<File>> entry in resultMap.entries) {
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searchResults.add(
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GenericSearchResult(
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ResultType.fileExtension,
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entry.key.toUpperCase(),
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entry.value,
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),
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);
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}
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return searchResults;
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}
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Future<List<GenericSearchResult>> getMonthSearchResults(String query) async {
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final List<GenericSearchResult> searchResults = [];
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for (var month in _getMatchingMonths(query)) {
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final matchedFiles =
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await FilesDB.instance.getFilesCreatedWithinDurations(
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_getDurationsOfMonthInEveryYear(month.monthNumber),
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null,
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order: 'DESC',
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);
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if (matchedFiles.isNotEmpty) {
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searchResults.add(
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GenericSearchResult(
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ResultType.month,
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month.name,
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matchedFiles,
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),
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);
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}
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}
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return searchResults;
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}
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Future<List<GenericSearchResult>> getDateResults(
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String query,
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) async {
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final List<GenericSearchResult> searchResults = [];
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final potentialDates = _getPossibleEventDate(query);
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for (var potentialDate in potentialDates) {
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final int day = potentialDate.item1;
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final int month = potentialDate.item2.monthNumber;
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final int year = potentialDate.item3; // nullable
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final matchedFiles =
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await FilesDB.instance.getFilesCreatedWithinDurations(
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_getDurationsForCalendarDateInEveryYear(day, month, year: year),
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null,
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order: 'DESC',
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);
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if (matchedFiles.isNotEmpty) {
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searchResults.add(
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GenericSearchResult(
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ResultType.event,
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'$day ${potentialDate.item2.name} ${year ?? ''}',
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matchedFiles,
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),
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);
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}
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}
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return searchResults;
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}
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List<MonthData> _getMatchingMonths(String query) {
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return allMonths
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.where(
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(monthData) =>
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monthData.name.toLowerCase().startsWith(query.toLowerCase()),
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)
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.toList();
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}
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Future<List<File>> _getFilesInYear(List<int> durationOfYear) async {
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return await FilesDB.instance.getFilesCreatedWithinDurations(
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[durationOfYear],
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null,
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order: "DESC",
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);
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}
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List<List<int>> _getDurationsForCalendarDateInEveryYear(
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int day,
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int month, {
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int year,
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}) {
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final List<List<int>> durationsOfHolidayInEveryYear = [];
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final int startYear = year ?? searchStartYear;
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final int endYear = year ?? currentYear;
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for (var yr = startYear; yr <= endYear; yr++) {
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if (isValidDate(day: day, month: month, year: yr)) {
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durationsOfHolidayInEveryYear.add([
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DateTime(yr, month, day).microsecondsSinceEpoch,
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DateTime(yr, month, day + 1).microsecondsSinceEpoch,
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]);
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}
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}
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return durationsOfHolidayInEveryYear;
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}
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List<List<int>> _getDurationsOfMonthInEveryYear(int month) {
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final List<List<int>> durationsOfMonthInEveryYear = [];
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for (var year = searchStartYear; year <= currentYear; year++) {
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durationsOfMonthInEveryYear.add([
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DateTime.utc(year, month, 1).microsecondsSinceEpoch,
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month == 12
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? DateTime(year + 1, 1, 1).microsecondsSinceEpoch
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: DateTime(year, month + 1, 1).microsecondsSinceEpoch,
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]);
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}
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return durationsOfMonthInEveryYear;
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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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List<Tuple3<int, MonthData, int>> _getPossibleEventDate(String query) {
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final List<Tuple3<int, MonthData, int>> possibleEvents = [];
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if (query.trim().isEmpty) {
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return possibleEvents;
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}
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final result = query
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.trim()
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.split(RegExp('[ ,-/]+'))
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.map((e) => e.trim())
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.where((e) => e.isNotEmpty)
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.toList();
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final resultCount = result.length;
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if (resultCount < 1 || resultCount > 4) {
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return possibleEvents;
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}
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final int day = int.tryParse(result[0]);
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if (day == null || day < 1 || day > 31) {
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return possibleEvents;
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}
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final List<MonthData> potentialMonth =
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resultCount > 1 ? _getMatchingMonths(result[1]) : allMonths;
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final int parsedYear = resultCount >= 3 ? int.tryParse(result[2]) : null;
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final List<int> matchingYears = [];
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if (parsedYear != null) {
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bool foundMatch = false;
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for (int i = searchStartYear; i <= currentYear; i++) {
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if (i.toString().startsWith(parsedYear.toString())) {
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matchingYears.add(i);
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foundMatch = foundMatch || (i == parsedYear);
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}
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}
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if (!foundMatch && parsedYear > 1000 && parsedYear <= currentYear) {
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matchingYears.add(parsedYear);
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}
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}
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for (var element in potentialMonth) {
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if (matchingYears.isEmpty) {
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possibleEvents.add(Tuple3(day, element, null));
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} else {
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for (int yr in matchingYears) {
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possibleEvents.add(Tuple3(day, element, yr));
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}
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}
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}
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return possibleEvents;
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}
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}
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