Initial upload: fin65-mobile
This commit is contained in:
Abderrahim-Mouhcine
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import '../config/app_config.dart';
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import '../models/account.dart';
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import '../models/category.dart';
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import '../models/dashboard.dart';
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import '../models/pending_operation.dart';
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import '../models/transaction_item.dart';
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import 'api_service.dart';
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import 'offline_store.dart';
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class SyncSnapshot {
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final DashboardData? dashboard;
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final List<Account> accounts;
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final List<Category> categories;
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final List<TransactionItem> transactions;
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final int pendingCount;
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final DateTime? lastSyncAt;
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final bool isOnline;
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final String? message;
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SyncSnapshot({
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required this.dashboard,
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required this.accounts,
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required this.categories,
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required this.transactions,
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required this.pendingCount,
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required this.lastSyncAt,
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required this.isOnline,
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this.message,
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});
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}
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class SyncService {
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SyncService({
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ApiService? apiService,
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OfflineStore? offlineStore,
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}) : store = offlineStore ?? OfflineStore.instance,
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apiService = apiService ?? ApiService(store: offlineStore ?? OfflineStore.instance);
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final OfflineStore store;
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final ApiService apiService;
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Future<List<PendingOperation>> loadPendingOperations() {
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return store.loadPendingOperations();
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}
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Future<String> getApiUrl() {
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return apiService.getBaseUrl();
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}
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Future<bool> testBackend() async {
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try {
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return await apiService.healthCheck();
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} catch (_) {
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return false;
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}
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}
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Future<SyncSnapshot> loadLocalSnapshot({bool isOnline = false, String? message}) async {
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final dashboard = await store.loadDashboard();
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final accounts = await store.loadAccounts();
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final categories = await store.loadCategories();
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final transactions = await store.loadTransactions(limit: AppConfig.defaultTransactionLimit);
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final pending = await store.loadPendingOperations();
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final lastSyncAt = await store.getLastSyncAt();
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return _applyPendingEstimates(
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dashboard: dashboard,
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accounts: accounts,
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categories: categories,
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transactions: transactions,
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pending: pending,
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lastSyncAt: lastSyncAt,
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isOnline: isOnline,
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message: message,
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);
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}
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Future<SyncSnapshot> synchronize() async {
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try {
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await apiService.healthCheck();
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await _syncPendingOperations();
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final accounts = await apiService.getAccounts();
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final categories = await apiService.getCategories();
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final dashboard = await apiService.getDashboard();
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final transactions = await apiService.getTransactions(limit: AppConfig.defaultTransactionLimit);
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await store.saveServerSnapshot(
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dashboard: dashboard,
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accounts: accounts,
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categories: categories,
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transactions: transactions,
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);
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return loadLocalSnapshot(isOnline: true, message: null);
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} catch (e) {
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return loadLocalSnapshot(
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isOnline: false,
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message: 'Backend indisponible. Données locales affichées.',
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);
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}
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}
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Future<bool> createTransactionSmart({
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required String label,
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required double amount,
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required String type,
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required int accountId,
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int? targetAccountId,
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int? categoryId,
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String? note,
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}) async {
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final payload = <String, dynamic>{
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'date': DateTime.now().toIso8601String(),
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'label': label,
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'amount': amount,
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'type': type,
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'account_id': accountId,
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'target_account_id': type == 'transfer' ? targetAccountId : null,
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'category_id': type == 'transfer' ? null : categoryId,
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'created_from': 'android',
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'note': note,
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};
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try {
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await apiService.healthCheck();
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await apiService.createTransactionFromPayload(payload);
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await synchronize();
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return true;
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} catch (_) {
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// Offline or backend unreachable: the operation is persisted locally in
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// SQLite. The UI can then immediately reload an estimated snapshot.
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await store.enqueueCreateTransaction(payload);
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return false;
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}
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}
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Future<void> _syncPendingOperations() async {
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final pending = await store.loadPendingOperations();
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for (final operation in pending) {
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try {
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if (operation.operationType == 'create_transaction') {
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await apiService.createTransactionFromPayload(operation.payload);
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await store.deletePendingOperation(operation.id);
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}
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} catch (e) {
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await store.markPendingError(operation.id, e.toString());
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rethrow;
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}
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}
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}
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SyncSnapshot _applyPendingEstimates({
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required DashboardData? dashboard,
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required List<Account> accounts,
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required List<Category> categories,
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required List<TransactionItem> transactions,
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required List<PendingOperation> pending,
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required DateTime? lastSyncAt,
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required bool isOnline,
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String? message,
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}) {
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final accountMap = <int, Account>{
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for (final account in accounts) account.id: account,
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};
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var adjustedDashboard = dashboard;
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final pendingTransactions = <TransactionItem>[];
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for (final operation in pending) {
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if (operation.operationType != 'create_transaction') continue;
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final item = TransactionItem.fromPending(
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localOperationId: operation.id,
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payload: operation.payload,
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);
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pendingTransactions.add(item);
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final amount = item.amount;
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final source = accountMap[item.accountId];
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if (item.type == 'expense') {
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if (source != null) {
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accountMap[item.accountId] = source.copyWith(
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appBalance: source.appBalance - amount,
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);
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}
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adjustedDashboard = _adjustDashboard(
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adjustedDashboard,
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totalDelta: -amount,
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availableDelta: -amount,
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incomeDelta: 0,
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expenseDelta: amount,
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monthlyBalanceDelta: -amount,
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);
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} else if (item.type == 'income') {
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if (source != null) {
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accountMap[item.accountId] = source.copyWith(
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appBalance: source.appBalance + amount,
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);
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}
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adjustedDashboard = _adjustDashboard(
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adjustedDashboard,
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totalDelta: amount,
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availableDelta: amount,
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incomeDelta: amount,
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expenseDelta: 0,
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monthlyBalanceDelta: amount,
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);
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} else if (item.type == 'transfer') {
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if (source != null) {
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accountMap[item.accountId] = source.copyWith(
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appBalance: source.appBalance - amount,
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);
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}
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final targetId = item.targetAccountId;
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if (targetId != null) {
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final target = accountMap[targetId];
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if (target != null) {
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accountMap[targetId] = target.copyWith(
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appBalance: target.appBalance + amount,
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);
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}
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}
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}
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}
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final adjustedAccounts = accountMap.values.toList()
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..sort((a, b) => a.name.toLowerCase().compareTo(b.name.toLowerCase()));
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final allTransactions = [
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...pendingTransactions.reversed,
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...transactions,
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];
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return SyncSnapshot(
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dashboard: adjustedDashboard,
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accounts: adjustedAccounts,
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categories: categories,
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transactions: allTransactions,
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pendingCount: pending.length,
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lastSyncAt: lastSyncAt,
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isOnline: isOnline,
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message: message,
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);
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}
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DashboardData? _adjustDashboard(
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DashboardData? dashboard, {
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required double totalDelta,
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required double availableDelta,
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required double incomeDelta,
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required double expenseDelta,
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required double monthlyBalanceDelta,
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}) {
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if (dashboard == null) return null;
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return dashboard.copyWith(
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totalBalance: dashboard.totalBalance + totalDelta,
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availableAfterReserves: dashboard.availableAfterReserves + availableDelta,
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monthlyIncome: dashboard.monthlyIncome + incomeDelta,
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monthlyExpenses: dashboard.monthlyExpenses + expenseDelta,
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monthlyBalance: dashboard.monthlyBalance + monthlyBalanceDelta,
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);
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}
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}
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