485 lines
14 KiB
Dart
485 lines
14 KiB
Dart
import 'dart:convert';
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import 'dart:io';
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import 'package:flutter/foundation.dart';
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import 'package:flutter_dotenv/flutter_dotenv.dart';
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import 'package:http/http.dart' as http;
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import 'package:intl/intl.dart';
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import 'package:path_provider/path_provider.dart';
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import 'package:rental_income_tracker/models/app_settings.dart';
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import 'package:rental_income_tracker/models/monthly_rent_record.dart';
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import 'package:rental_income_tracker/services/notification_service.dart';
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import 'package:rental_income_tracker/services/open_exchange_service.dart';
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import 'package:rental_income_tracker/services/storage_service.dart';
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import 'package:rental_income_tracker/services/time_service.dart';
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import 'package:timezone/timezone.dart' as tz;
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class RentTableRow {
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RentTableRow({
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required this.year,
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required this.month,
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required this.monthLabel,
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required this.status,
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required this.usdAmount,
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required this.sekAmount,
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required this.effectiveUsdToSekRate,
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required this.runningUsd,
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required this.runningSek,
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});
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final int year;
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final int month;
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final String monthLabel;
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final PaymentStatus status;
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final double? usdAmount;
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final double? sekAmount;
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final double? effectiveUsdToSekRate;
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final double runningUsd;
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final double runningSek;
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}
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class RentController extends ChangeNotifier {
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RentController({
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StorageService? storageService,
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ForexRateApiService? exchangeService,
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}) : _storageService = storageService ?? StorageService(),
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_exchangeService =
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exchangeService ??
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ForexRateApiService(
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httpClient: http.Client(),
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apiKey: _exchangeRateApiKeyFromEnv(),
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) {
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_notificationService = NotificationService(_onNotificationAction);
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}
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static String _exchangeRateApiKeyFromEnv() {
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final key = dotenv.env['EXCHANGE_RATE_API_KEY']?.trim() ?? '';
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if (key.isEmpty) {
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if (kDebugMode) {
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debugPrint(
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'[RentController] EXCHANGE_RATE_API_KEY missing in .env, API calls will fail until set.',
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);
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}
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return 'REPLACE_WITH_YOUR_EXCHANGE_RATE_API_KEY';
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}
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return key;
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}
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final StorageService _storageService;
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final ForexRateApiService _exchangeService;
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late NotificationService _notificationService;
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AppSettings _settings = AppSettings.defaults();
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Map<String, MonthlyRentRecord> _records = <String, MonthlyRentRecord>{};
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bool _isLoading = false;
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String? _errorMessage;
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int _selectedYear = DateTime.now().year;
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AppSettings get settings => _settings;
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bool get isLoading => _isLoading;
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String? get errorMessage => _errorMessage;
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int get selectedYear => _selectedYear;
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Future<void> initialize() async {
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_setLoading(true);
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_errorMessage = null;
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try {
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await TimeService.initialize();
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await _notificationService.initialize();
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_settings = await _storageService.loadSettings();
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_records = await _storageService.loadRecords();
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await _notificationService.processPendingActions();
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await _syncNotificationScheduleForCurrentMonth();
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} catch (err) {
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_errorMessage = err.toString();
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} finally {
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_setLoading(false);
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}
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}
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void selectYear(int year) {
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_selectedYear = year;
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notifyListeners();
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}
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Future<void> updateRentUsd(double value) async {
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_settings = _settings.copyWith(rentUsd: value);
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await _storageService.saveSettings(_settings);
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notifyListeners();
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}
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Future<void> setOccupied(bool occupied) async {
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final now = DateTime.now();
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if (occupied) {
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_settings = _settings.copyWith(
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occupied: true,
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clearNotOccupiedFromYearMonth: true,
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);
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await _notificationService.cancelAll();
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await _syncNotificationScheduleForCurrentMonth();
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} else {
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_settings = _settings.copyWith(
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occupied: false,
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notOccupiedFromYearMonth: TimeService.monthKey(now.year, now.month),
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);
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await _notificationService.cancelAll();
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}
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await _storageService.saveSettings(_settings);
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notifyListeners();
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}
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Future<void> markCurrentMonthPaidManually() async {
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final now = DateTime.now();
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await markMonthPaid(
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year: now.year,
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month: now.month,
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assumeOnTime: false,
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source: 'manual',
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);
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}
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Future<void> markMonthPaid({
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required int year,
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required int month,
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required bool assumeOnTime,
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required String source,
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}) async {
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_errorMessage = null;
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_setLoading(true);
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if (kDebugMode) {
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debugPrint(
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'[RentController] markMonthPaid start year=$year month=$month source=$source assumeOnTime=$assumeOnTime',
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);
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}
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try {
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if (_isNotOccupiedMonth(year, month)) {
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throw StateError('Cannot mark a non-occupied month as paid.');
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}
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if (_settings.rentUsd <= 0) {
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throw StateError('Set rent amount in Settings before marking paid.');
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}
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final key = TimeService.monthKey(year, month);
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if (_records.containsKey(key)) {
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if (kDebugMode) {
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debugPrint(
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'[RentController] markMonthPaid skipped API call; cached record exists for key=$key',
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);
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}
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await _notificationService.cancelForMonth(year, month);
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await _syncNotificationScheduleForCurrentMonth();
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return;
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}
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final paidAt = DateTime.now().toUtc();
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final usd = _settings.rentUsd;
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final estPaidAt = tz.TZDateTime.from(paidAt, TimeService.est);
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final estDate = DateTime(estPaidAt.year, estPaidAt.month, estPaidAt.day);
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final conversion = await _exchangeService.convertUsdToSek(
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estDate: estDate,
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amount: usd,
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);
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if (kDebugMode) {
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debugPrint(
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'[RentController] markMonthPaid conversion success quote=${conversion.quote} result=${conversion.result} usd=$usd estDate=$estDate',
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);
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}
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final onTime =
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assumeOnTime || TimeService.isOnTimeByDeadline(paidAt, year, month);
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final record = MonthlyRentRecord(
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year: year,
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month: month,
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usdAmount: usd,
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sekAmount: conversion.result,
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usdToSekRate: conversion.quote,
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paidAtUtc: paidAt,
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onTime: onTime,
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source: source,
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);
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_records[record.key] = record;
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await _storageService.saveRecords(_records);
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if (kDebugMode) {
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debugPrint(
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'[RentController] markMonthPaid stored record key=${record.key}',
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);
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}
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await _notificationService.cancelForMonth(year, month);
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await _syncNotificationScheduleForCurrentMonth();
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} catch (err, stackTrace) {
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if (kDebugMode) {
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debugPrint('[RentController] markMonthPaid failed: $err');
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debugPrint(stackTrace.toString());
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}
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_errorMessage = err.toString();
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} finally {
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_setLoading(false);
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}
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}
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Future<void> backfillLastYear() async {
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_errorMessage = null;
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_setLoading(true);
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if (kDebugMode) {
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debugPrint('[RentController] backfillLastYear start');
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}
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try {
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if (_settings.rentUsd <= 0) {
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throw StateError('Set rent amount in Settings before backfill.');
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}
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final year = DateTime.now().year - 1;
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var savedMonths = 0;
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var pausedByRateLimit = false;
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for (var month = 1; month <= 12; month++) {
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final key = TimeService.monthKey(year, month);
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if (_records.containsKey(key)) {
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if (kDebugMode) {
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debugPrint('[RentController] backfill skip cached key=$key');
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}
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continue;
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}
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try {
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final usd = _settings.rentUsd;
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final estDate = DateTime(year, month, 1);
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final conversion = await _exchangeService.convertUsdToSek(
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estDate: estDate,
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amount: usd,
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);
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if (kDebugMode) {
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debugPrint(
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'[RentController] backfill conversion year=$year month=$month quote=${conversion.quote} result=${conversion.result}',
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);
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}
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final paidAtUtc = tz.TZDateTime(
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TimeService.est,
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year,
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month,
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1,
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12,
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).toUtc();
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_records[key] = MonthlyRentRecord(
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year: year,
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month: month,
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usdAmount: usd,
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sekAmount: conversion.result,
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usdToSekRate: conversion.quote,
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paidAtUtc: paidAtUtc,
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onTime: true,
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source: 'backfill',
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);
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await _storageService.saveRecords(_records);
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savedMonths++;
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} catch (err) {
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final errorText = err.toString();
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if (errorText.contains('429') ||
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errorText.toLowerCase().contains('rate_limit_reached')) {
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pausedByRateLimit = true;
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_errorMessage =
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'Backfill paused by API rate limits after $savedMonths new month(s). Run backfill again in a minute to continue.';
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if (kDebugMode) {
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debugPrint(
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'[RentController] backfill paused by rate limit after $savedMonths month(s)',
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);
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}
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break;
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}
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rethrow;
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}
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}
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if (kDebugMode) {
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debugPrint(
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pausedByRateLimit
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? '[RentController] backfillLastYear paused by rate limit'
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: '[RentController] backfillLastYear completed',
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);
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}
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notifyListeners();
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} catch (err, stackTrace) {
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if (kDebugMode) {
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debugPrint('[RentController] backfillLastYear failed: $err');
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debugPrint(stackTrace.toString());
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}
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_errorMessage = err.toString();
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} finally {
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_setLoading(false);
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}
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}
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Future<String> exportJson() async {
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final records = _records.values.toList()
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..sort((a, b) {
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final byYear = a.year.compareTo(b.year);
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if (byYear != 0) {
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return byYear;
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}
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return a.month.compareTo(b.month);
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});
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final payload = <String, dynamic>{
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'exportedAtUtc': DateTime.now().toUtc().toIso8601String(),
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'settings': _settings.toJson(),
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'records': records.map((e) => e.toJson()).toList(),
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};
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final jsonString = const JsonEncoder.withIndent(' ').convert(payload);
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final dir = await getApplicationDocumentsDirectory();
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final timestamp = DateFormat('yyyyMMdd_HHmmss').format(DateTime.now());
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final file = File('${dir.path}/rent_tracker_export_$timestamp.json');
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await file.writeAsString(jsonString);
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return file.path;
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}
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List<RentTableRow> buildRowsForSelectedYear() {
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final now = DateTime.now();
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final maxMonth = _selectedYear < now.year
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? 12
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: (_selectedYear == now.year ? now.month : 0);
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final rows = <RentTableRow>[];
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var runningUsd = 0.0;
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var runningSek = 0.0;
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for (var month = 1; month <= maxMonth; month++) {
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final key = TimeService.monthKey(_selectedYear, month);
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final record = _records[key];
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final status = _statusForMonth(_selectedYear, month, record);
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double? usd;
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double? sek;
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double? rate;
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if (record != null) {
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usd = record.usdAmount;
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sek = record.sekAmount;
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rate = record.usdToSekRate;
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runningUsd += usd;
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runningSek += sek;
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}
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rows.add(
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RentTableRow(
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year: _selectedYear,
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month: month,
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monthLabel: DateFormat.MMMM().format(DateTime(_selectedYear, month)),
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status: status,
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usdAmount: usd,
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sekAmount: sek,
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effectiveUsdToSekRate: rate,
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runningUsd: runningUsd,
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runningSek: runningSek,
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),
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);
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}
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return rows;
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}
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Future<void> _onNotificationAction(NotificationActionEvent event) async {
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if (event.isYes) {
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await markMonthPaid(
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year: event.year,
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month: event.month,
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assumeOnTime: !event.isRetry,
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source: 'notification',
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);
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return;
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}
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await _syncNotificationScheduleForCurrentMonth();
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}
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PaymentStatus _statusForMonth(
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int year,
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int month,
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MonthlyRentRecord? record,
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) {
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if (_isNotOccupiedMonth(year, month)) {
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return PaymentStatus.notOccupied;
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}
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if (record != null) {
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return record.onTime ? PaymentStatus.onTime : PaymentStatus.late;
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}
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final now = DateTime.now();
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if (TimeService.monthBefore(
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year: year,
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month: month,
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otherYear: now.year,
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otherMonth: now.month,
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)) {
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return PaymentStatus.notPaid;
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}
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return PaymentStatus.pending;
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}
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bool _isNotOccupiedMonth(int year, int month) {
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if (_settings.occupied || _settings.notOccupiedFromYearMonth == null) {
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return false;
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}
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final parts = _settings.notOccupiedFromYearMonth!.split('-');
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if (parts.length != 2) {
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return false;
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}
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final pivotYear = int.tryParse(parts[0]);
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final pivotMonth = int.tryParse(parts[1]);
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if (pivotYear == null || pivotMonth == null) {
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return false;
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}
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return TimeService.monthAtOrAfter(
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year: year,
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month: month,
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pivotYear: pivotYear,
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pivotMonth: pivotMonth,
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);
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}
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Future<void> _syncNotificationScheduleForCurrentMonth() async {
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final now = DateTime.now();
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final key = TimeService.monthKey(now.year, now.month);
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final isPaid = _records.containsKey(key);
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if (!_settings.occupied ||
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_isNotOccupiedMonth(now.year, now.month) ||
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isPaid) {
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await _notificationService.cancelForMonth(now.year, now.month);
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return;
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}
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await _notificationService.scheduleForMonth(
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year: now.year,
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month: now.month,
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quietHourStart: _settings.localQuietHourStart,
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fallbackHour: _settings.localFallbackHour,
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);
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}
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void _setLoading(bool value) {
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_isLoading = value;
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notifyListeners();
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}
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}
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