32 lines
841 B
Dart
32 lines
841 B
Dart
import 'dart:convert';
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import 'package:localstore/localstore.dart';
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abstract class RequestCache<T> {
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int maxCacheTime;
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Function(T) onUpdate;
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RequestCache(this.maxCacheTime, this.onUpdate);
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void start(String file, String document) async {
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Map<String, dynamic>? tableData = await Localstore.instance.collection(file).doc(document).get();
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if(tableData != null) {
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onUpdate(onLocalData(tableData['json']));
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}
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if(DateTime.now().millisecondsSinceEpoch - (maxCacheTime * 1000) < (tableData?['lastupdate'] ?? 0)) {
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return;
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}
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T newValue = await onLoad();
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onUpdate(newValue);
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Localstore.instance.collection(file).doc(document).set({
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"json": jsonEncode(newValue),
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"lastupdate": DateTime.now().millisecondsSinceEpoch
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});
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}
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T onLocalData(String json);
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Future<T> onLoad();
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} |