prasule/lib/views/graph_view.dart

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import 'package:flutter/material.dart';
import 'package:intl/intl.dart';
import 'package:prasule/api/category.dart';
import 'package:prasule/api/wallet.dart';
import 'package:prasule/api/walletmanager.dart';
import 'package:prasule/main.dart';
import 'package:prasule/pw/platformbutton.dart';
import 'package:prasule/pw/platformroute.dart';
import 'package:prasule/util/drawer.dart';
import 'package:prasule/util/graphs.dart';
import 'package:flutter_gen/gen_l10n/app_localizations.dart';
import 'package:prasule/views/settings/settings.dart';
import 'package:prasule/views/setup.dart';
import 'package:shared_preferences/shared_preferences.dart';
class GraphView extends StatefulWidget {
const GraphView({super.key});
@override
State<GraphView> createState() => _GraphViewState();
}
class _GraphViewState extends State<GraphView> {
var _selectedDate = DateTime.now();
Wallet? selectedWallet;
List<Wallet> wallets = [];
String? locale;
var yearlyBtnSet = {"monthly"};
var graphTypeSet = {"expense", "income"};
bool get yearly => yearlyBtnSet.contains("yearly");
@override
void didChangeDependencies() {
super.didChangeDependencies();
locale ??= Localizations.localeOf(context).languageCode;
}
List<double> generateChartData(EntryType type) {
var data = List<double>.filled(
(yearly)
? 12
: DateTime(_selectedDate.year, _selectedDate.month, 0).day,
0.0);
if (selectedWallet == null) return [];
for (var i = 0; i < data.length; i++) {
var entriesForRange = selectedWallet!.entries.where((element) =>
((!yearly)
? element.date.month == _selectedDate.month &&
element.date.year == _selectedDate.year &&
element.date.day == i + 1
: element.date.month == i + 1 &&
element.date.year == _selectedDate.year) &&
element.type == type);
var sum = 0.0;
for (var e in entriesForRange) {
sum += e.data.amount;
}
data[i] = sum;
}
return data;
}
void loadWallet() async {
wallets = await WalletManager.listWallets();
if (wallets.isEmpty && mounted) {
Navigator.of(context).pushReplacement(
MaterialPageRoute(builder: (c) => const SetupView()));
return;
}
selectedWallet = wallets.first;
setState(() {});
}
int? chartType;
@override
void initState() {
super.initState();
loadWallet();
SharedPreferences.getInstance().then((s) {
chartType = s.getInt("monthlygraph") ?? 2;
setState(() {});
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: DropdownButton<int>(
value:
(selectedWallet == null) ? -1 : wallets.indexOf(selectedWallet!),
items: [
...wallets.map(
(e) => DropdownMenuItem(
value: wallets.indexOf(
e,
),
child: Text(e.name),
),
),
DropdownMenuItem(
value: -1,
child: Text(AppLocalizations.of(context).newWallet),
)
],
onChanged: (v) async {
if (v == null || v == -1) {
await Navigator.of(context).push(
platformRoute(
(c) => const SetupView(
newWallet: true,
),
),
);
wallets = await WalletManager.listWallets();
logger.i(wallets.length);
selectedWallet = wallets.last;
setState(() {});
return;
}
selectedWallet = wallets[v];
setState(() {});
},
),
actions: [
PopupMenuButton(
itemBuilder: (context) => [
AppLocalizations.of(context).settings,
AppLocalizations.of(context).about
].map((e) => PopupMenuItem(value: e, child: Text(e))).toList(),
onSelected: (value) {
if (value == AppLocalizations.of(context).settings) {
Navigator.of(context).push(
MaterialPageRoute(
builder: (context) => const SettingsView(),
),
);
} else if (value == AppLocalizations.of(context).about) {
showAboutDialog(
context: context,
applicationLegalese: AppLocalizations.of(context).license,
applicationName: "Prašule");
}
},
)
],
),
drawer: makeDrawer(context, 2),
body: SingleChildScrollView(
child: Center(
child: (selectedWallet == null)
? const CircularProgressIndicator(
strokeWidth: 5,
)
: SizedBox(
width: MediaQuery.of(context).size.width * 0.9,
height: MediaQuery.of(context).size.height,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
SegmentedButton<String>(
segments: [
ButtonSegment<String>(
value: "expense",
label: Text(AppLocalizations.of(context).expenses),
),
ButtonSegment<String>(
value: "income",
label: Text(AppLocalizations.of(context).income),
),
],
selected: graphTypeSet,
multiSelectionEnabled: true,
onSelectionChanged: (selection) {
graphTypeSet = selection;
setState(() {});
},
),
const SizedBox(
height: 5,
),
SegmentedButton<String>(
segments: [
ButtonSegment<String>(
value: "yearly",
label: Text(AppLocalizations.of(context).yearly),
),
ButtonSegment<String>(
value: "monthly",
label: Text(AppLocalizations.of(context).monthly),
),
],
selected: yearlyBtnSet,
onSelectionChanged: (selection) async {
yearlyBtnSet = selection;
var s = await SharedPreferences.getInstance();
chartType = (yearly)
? (s.getInt("yearlygraph") ?? 1)
: (s.getInt("monthlygraph") ?? 2);
setState(() {});
},
),
const SizedBox(height: 5),
Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(8),
color: Theme.of(context)
.colorScheme
.secondaryContainer),
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
children: [
PlatformButton(
text: (yearly)
? DateFormat.y(locale).format(_selectedDate)
: DateFormat.yMMMM(locale)
.format(_selectedDate),
onPressed: () async {
var firstDate = (selectedWallet!.entries
..sort(
(a, b) => a.date.compareTo(b.date)))
.first
.date;
var lastDate = (selectedWallet!.entries
..sort(
(a, b) => b.date.compareTo(a.date)))
.first
.date;
logger.i(firstDate);
logger.i(lastDate);
var newDate = await showDatePicker(
context: context,
initialDate: DateTime(_selectedDate.year,
_selectedDate.month, 1),
firstDate: firstDate,
lastDate: lastDate,
initialEntryMode: (yearly)
? DatePickerEntryMode.input
: DatePickerEntryMode.calendar,
initialDatePickerMode: (yearly)
? DatePickerMode.year
: DatePickerMode.day);
if (newDate == null) return;
_selectedDate = newDate;
setState(() {});
},
),
const SizedBox(
height: 5,
),
SizedBox(
width: MediaQuery.of(context).size.width * 0.9,
height: 300,
child: (chartType == null)
? const CircularProgressIndicator()
: (chartType == 1)
? ExpensesBarChart(
currency: selectedWallet!.currency,
date: _selectedDate,
locale: locale ?? "en",
yearly: yearly,
expenseData: (graphTypeSet
.contains("expense"))
? generateChartData(
EntryType.expense)
: [],
incomeData: (graphTypeSet
.contains("income"))
? generateChartData(
EntryType.income)
: [],
)
: ExpensesLineChart(
currency: selectedWallet!.currency,
date: _selectedDate,
locale: locale ?? "en",
yearly: yearly,
expenseData: (graphTypeSet
.contains("expense"))
? generateChartData(
EntryType.expense)
: [],
incomeData: (graphTypeSet
.contains("income"))
? generateChartData(
EntryType.income)
: [],
),
)
],
),
),
)
],
),
),
),
),
);
}
}