82 lines
2.6 KiB
Dart
82 lines
2.6 KiB
Dart
import 'dart:io';
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import 'package:file_picker/file_picker.dart';
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import 'package:flutter/foundation.dart';
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import 'package:flutter/services.dart';
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import 'package:path/path.dart' as p;
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import 'logger.dart';
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import '../security/app_lock.dart';
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const _documentExport = MethodChannel('ru.ikar.app/media_export');
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// #***! итог сохранить как, отмену отличаем от ошибки
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class SaveFileAsResult {
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final bool saved;
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final bool cancelled;
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final String? path;
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final String? error;
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const SaveFileAsResult({
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required this.saved,
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this.cancelled = false,
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this.path,
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this.error,
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});
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}
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// #***! на андроиде системное сохранить файл, на остальных выбор папки и копирование
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Future<SaveFileAsResult> saveFileAs({
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required File source,
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required String fileName,
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required String dialogTitle,
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}) async {
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final safeName = p.basename(fileName).trim();
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final name = safeName.isEmpty ? p.basename(source.path) : safeName;
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try {
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if (!kIsWeb && Platform.isAndroid) {
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return await AppLock.instance.external(
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() => _exportDocument(source, name),
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);
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}
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final directory = await FilePicker.platform.getDirectoryPath(
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dialogTitle: dialogTitle,
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);
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if (directory == null) {
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return const SaveFileAsResult(saved: false, cancelled: true);
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}
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final target = await _availableTarget(directory, name);
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if (p.equals(p.absolute(source.path), p.absolute(target.path))) {
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return SaveFileAsResult(saved: true, path: target.path);
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}
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await source.copy(target.path);
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return SaveFileAsResult(saved: true, path: target.path);
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} catch (error) {
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logger.w('[saveAs] $name: $error');
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return SaveFileAsResult(saved: false, error: error.toString());
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}
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}
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Future<SaveFileAsResult> _exportDocument(File source, String name) async {
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final uri = await _documentExport.invokeMethod<String>('saveAs', {
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'path': source.path,
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'name': name,
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});
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if (uri == null) return const SaveFileAsResult(saved: false, cancelled: true);
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return SaveFileAsResult(saved: true, path: uri);
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}
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// #***! такой файл уже есть, дописываем (2) как проводник
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Future<File> _availableTarget(String directory, String fileName) async {
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var target = File(p.join(directory, fileName));
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if (!await target.exists()) return target;
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final extension = p.extension(fileName);
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final stem = p.basenameWithoutExtension(fileName);
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var suffix = 2;
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while (await target.exists()) {
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target = File(p.join(directory, '$stem ($suffix)$extension'));
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suffix++;
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}
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return target;
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}
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