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Added Google Drive storage location

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This commit is contained in:
Courtney Arnold 2026-08-08 14:59:18 -05:00
parent e630f2a3ec
commit 73a7c93e64
22 changed files with 1690 additions and 205 deletions
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87
lib/services/storage_service.dart
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@ -3,17 +3,17 @@ import 'dart:io';
import 'package:path/path.dart' as p;
import 'package:path_provider/path_provider.dart';
import 'package:shared_preferences/shared_preferences.dart';
import '../models/fuel_entry.dart';
import '../models/vehicle.dart';
/// Owns the on-disk layout for the app: a `data.json` file holding vehicles
/// and fuel entries, plus a `receipts/` subfolder holding receipt photos.
/// The parent directory containing both is user-configurable (see
/// [setSaveDirectory]) and persisted across launches via SharedPreferences.
/// Owns the local, offline staging area: a `data.json` file holding
/// vehicles and fuel entries, plus a `receipts/` subfolder holding receipt
/// photos not yet uploaded to Drive. This is always
/// `ApplicationDocumentsDirectory/FuelTaxTracker` — not user-configurable —
/// since Drive (via [DriveSyncService]) is now the real shared destination
/// and this is just a local cache/holding area used while offline.
class StorageService {
static const _prefsKey = 'save_directory_path';
static const _dataFileName = 'fuel_tax_data.json';
static const _receiptsFolderName = 'receipts';
@ -24,36 +24,31 @@ class StorageService {
Directory get receiptsDirectory =>
Directory(p.join(_saveDirectory.path, _receiptsFolderName));
File get _dataFile => File(p.join(_saveDirectory.path, _dataFileName));
File get dataFile => File(p.join(_saveDirectory.path, _dataFileName));
/// Must be called once before any other method. Loads the previously
/// chosen save directory, falling back to the app's own documents
/// directory the first time the app runs.
/// Must be called once before any other method.
Future<void> init() async {
final prefs = await SharedPreferences.getInstance();
final storedPath = prefs.getString(_prefsKey);
if (storedPath != null && await Directory(storedPath).exists()) {
_saveDirectory = Directory(storedPath);
} else {
final docsDir = await getApplicationDocumentsDirectory();
_saveDirectory = Directory(p.join(docsDir.path, 'FuelTaxTracker'));
}
final docsDir = await getApplicationDocumentsDirectory();
_saveDirectory = Directory(p.join(docsDir.path, 'FuelTaxTracker'));
await _saveDirectory.create(recursive: true);
await receiptsDirectory.create(recursive: true);
}
Future<({List<Vehicle> vehicles, List<FuelEntry> entries})> loadData() async {
if (!await _dataFile.exists()) {
if (!await dataFile.exists()) {
return (vehicles: <Vehicle>[], entries: <FuelEntry>[]);
}
final raw = await _dataFile.readAsString();
final raw = await dataFile.readAsString();
if (raw.trim().isEmpty) {
return (vehicles: <Vehicle>[], entries: <FuelEntry>[]);
}
return decodeData(raw);
}
({List<Vehicle> vehicles, List<FuelEntry> entries}) decodeData(String raw) {
final json = jsonDecode(raw) as Map<String, dynamic>;
final vehicles = (json['vehicles'] as List<dynamic>? ?? [])
.map((v) => Vehicle.fromJson(v as Map<String, dynamic>))
@ -65,19 +60,26 @@ class StorageService {
return (vehicles: vehicles, entries: entries);
}
Future<void> saveData({
String encodeData({
required List<Vehicle> vehicles,
required List<FuelEntry> entries,
}) async {
}) {
final json = {
'vehicles': vehicles.map((v) => v.toJson()).toList(),
'fuelEntries': entries.map((e) => e.toJson()).toList(),
};
await _dataFile.writeAsString(const JsonEncoder.withIndent(' ').convert(json));
return const JsonEncoder.withIndent(' ').convert(json);
}
/// Copies a captured receipt image into the receipts folder and returns
/// the path it was stored at.
Future<void> saveData({
required List<Vehicle> vehicles,
required List<FuelEntry> entries,
}) async {
await dataFile.writeAsString(encodeData(vehicles: vehicles, entries: entries));
}
/// Copies a captured receipt image into the local receipts folder and
/// returns the path it was stored at, pending upload to Drive.
Future<String> storeReceiptImage(File sourceImage, String fuelEntryId) async {
final ext = p.extension(sourceImage.path);
final destPath = p.join(receiptsDirectory.path, '$fuelEntryId$ext');
@ -92,37 +94,4 @@ class StorageService {
await file.delete();
}
}
/// Changes where the data file and receipt images live, moving any
/// existing data/images from the old location into the new one.
Future<void> setSaveDirectory(String newPath) async {
final newDir = Directory(newPath);
await newDir.create(recursive: true);
final newReceiptsDir = Directory(p.join(newPath, _receiptsFolderName));
await newReceiptsDir.create(recursive: true);
final oldDataFile = _dataFile;
final oldReceiptsDir = receiptsDirectory;
if (await oldDataFile.exists() &&
p.equals(oldDataFile.path, p.join(newPath, _dataFileName)) == false) {
await oldDataFile.copy(p.join(newPath, _dataFileName));
}
if (await oldReceiptsDir.exists()) {
await for (final entity in oldReceiptsDir.list()) {
if (entity is File) {
final destPath = p.join(newReceiptsDir.path, p.basename(entity.path));
if (!p.equals(entity.path, destPath)) {
await entity.copy(destPath);
}
}
}
}
_saveDirectory = newDir;
final prefs = await SharedPreferences.getInstance();
await prefs.setString(_prefsKey, newPath);
}
}