import 'package:collection/collection.dart'; import 'package:logging/logging.dart'; import 'package:np_codegen/np_codegen.dart'; import 'package:np_collection/np_collection.dart'; import 'package:np_log/np_log.dart'; import 'package:np_string/np_string.dart'; import 'package:woozy_search/woozy_search.dart'; part 'suggester.g.dart'; @npLog class Suggester { Suggester({ required this.items, required this.itemToKeywords, int maxResult = 5, }) : _searcher = Woozy(limit: maxResult) { for (final a in items) { for (final k in itemToKeywords(a)) { _searcher.addEntry(k.toCaseInsensitiveString(), value: a); } } } List search(CiString phrase) { final results = _searcher.search(phrase.toCaseInsensitiveString()); if (isDevMode) { final str = results.map((e) => "${e.score}: ${e.text}").join("\n"); _log.info("[search] Search '$phrase':\n$str"); } final matches = results .where((e) => e.score > 0) .map((e) { if (itemToKeywords(e.value as T).any((k) => k.startsWith(phrase))) { // prefer names that start exactly with the search phrase return (score: e.score + 1, item: e.value as T); } else { return (score: e.score, item: e.value as T); } }) .sorted((a, b) => a.score.compareTo(b.score)) .reversed .distinctIf( (a, b) => identical(a.item, b.item), (a) => a.item.hashCode, ) .map((e) => e.item) .toList(); return matches; } final List items; final List Function(T item) itemToKeywords; final Woozy _searcher; }