64 lines
2.1 KiB
Dart
64 lines
2.1 KiB
Dart
import 'package:aves/model/entry/entry.dart';
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import 'package:aves/model/filters/location.dart';
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import 'package:aves/model/source/collection_source.dart';
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import 'package:aves/utils/collection_utils.dart';
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import 'package:collection/collection.dart';
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mixin StateMixin on SourceBase {
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// by state code
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final Map<String, int> _filterEntryCountMap = {}, _filterSizeMap = {};
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final Map<String, AvesEntry?> _filterRecentEntryMap = {};
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void invalidateStateFilterSummary({
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Set<AvesEntry>? entries,
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Set<String>? stateCodes,
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bool notify = true,
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}) {
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if (_filterEntryCountMap.isEmpty && _filterSizeMap.isEmpty && _filterRecentEntryMap.isEmpty) return;
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if (entries == null && stateCodes == null) {
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_filterEntryCountMap.clear();
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_filterSizeMap.clear();
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_filterRecentEntryMap.clear();
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} else {
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stateCodes ??= {};
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if (entries != null) {
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stateCodes.addAll(entries.where((entry) => entry.hasAddress).map((entry) => entry.addressDetails?.stateCode).whereNotNull());
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}
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stateCodes.forEach((stateCode) {
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_filterEntryCountMap.remove(stateCode);
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_filterSizeMap.remove(stateCode);
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_filterRecentEntryMap.remove(stateCode);
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});
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}
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if (notify) {
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eventBus.fire(StateSummaryInvalidatedEvent(stateCodes));
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}
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}
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int stateEntryCount(LocationFilter filter) {
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final stateCode = filter.code;
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if (stateCode == null) return 0;
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return _filterEntryCountMap.putIfAbsent(stateCode, () => visibleEntries.where(filter.test).length);
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}
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int stateSize(LocationFilter filter) {
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final stateCode = filter.code;
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if (stateCode == null) return 0;
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return _filterSizeMap.putIfAbsent(stateCode, () => visibleEntries.where(filter.test).map((v) => v.sizeBytes).sum);
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}
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AvesEntry? stateRecentEntry(LocationFilter filter) {
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final stateCode = filter.code;
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if (stateCode == null) return null;
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return _filterRecentEntryMap.putIfAbsent(stateCode, () => sortedEntriesByDate.firstWhereOrNull(filter.test));
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}
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}
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class StatesChangedEvent {}
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class StateSummaryInvalidatedEvent {
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final Set<String>? stateCodes;
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const StateSummaryInvalidatedEvent(this.stateCodes);
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}
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