Jisho-Study-Tool/lib/screens/history.dart

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2022-01-19 02:10:05 +01:00
import 'package:flutter/material.dart';
import '../components/common/loading.dart';
import '../components/common/opaque_box.dart';
import '../components/history/date_divider.dart';
import '../components/history/kanji_box.dart';
import '../components/history/search_item.dart';
import '../models/history/search.dart';
import '../routing/routes.dart';
class HistoryView extends StatelessWidget {
const HistoryView({Key? key}) : super(key: key);
Database get _db => GetIt.instance.get<Database>();
Stream<Map<int, Search>> get searchStream => Search.store
.query(finder: Finder(sortOrders: [SortOrder('timestamp', false)]))
.onSnapshots(_db)
.map(
(snapshot) => Map.fromEntries(
snapshot.where((snap) => snap.value != null).map(
(snap) => MapEntry(
snap.key,
Search.fromJson(snap.value! as Map<String, Object?>),
),
),
),
);
@override
Widget build(BuildContext context) {
return StreamBuilder<Map<int, Search>>(
stream: searchStream,
builder: (context, snapshot) {
if (!snapshot.hasData) return const LoadingScreen();
final Map<int, Search> data = snapshot.data!;
if (data.isEmpty)
return const Center(
child: Text('The history is empty.\nTry searching for something!'),
);
return OpaqueBox(
child: ListView.separated(
itemCount: data.length + 1,
itemBuilder: historyEntryWithData(data),
separatorBuilder:
historyEntrySeparatorWithData(data.values.toList()),
),
);
},
);
}
Widget Function(BuildContext, int) historyEntryWithData(
Map<int, Search> data,
) =>
(context, index) {
if (index == 0) return const SizedBox.shrink();
final Search search = data.values.toList()[index - 1];
final int objectKey = data.keys.toList()[index - 1];
late final Widget child;
late final void Function() onTap;
if (search.isKanji) {
child = KanjiBox(kanji: search.kanjiQuery!.kanji);
onTap = () => Navigator.pushNamed(
context,
Routes.kanjiSearch,
arguments: search.kanjiQuery!.kanji,
);
} else {
child = Text(search.wordQuery!.query);
onTap = () => Navigator.pushNamed(
context,
Routes.search,
arguments: search.wordQuery!.query,
);
}
return SearchItem(
time: search.timestamp,
search: child,
objectKey: objectKey,
onTap: onTap,
onDelete: () => build(context),
);
};
DateTime roundToDay(DateTime date) =>
DateTime(date.year, date.month, date.day);
bool dateChangedFromLastSearch(Search prevSearch, DateTime searchDate) {
final DateTime prevSearchDate = roundToDay(prevSearch.timestamp);
return prevSearchDate != searchDate;
}
DateTime get today => roundToDay(DateTime.now());
DateTime get yesterday =>
roundToDay(DateTime.now().subtract(const Duration(days: 1)));
Widget Function(BuildContext, int) historyEntrySeparatorWithData(
List<Search> data,
) =>
(context, index) {
final Search search = data[index];
final DateTime searchDate = roundToDay(search.timestamp);
if (index == 0 ||
dateChangedFromLastSearch(data[index - 1], searchDate)) {
if (searchDate == today)
return const DateDivider(text: 'Today');
else if (searchDate == yesterday)
return const DateDivider(text: 'Yesterday');
else
return DateDivider(date: searchDate);
}
return const Divider(height: 0);
};
}