fbmobile/lib/core/viewmodels/upload_model.dart

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import 'dart:async';
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import 'dart:io';
import 'package:file_picker/file_picker.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_translate/flutter_translate.dart';
import 'package:logger/logger.dart';
import 'package:path/path.dart';
import 'package:receive_sharing_intent/receive_sharing_intent.dart';
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import '../../locator.dart';
import '../enums/error_code.dart';
import '../enums/viewstate.dart';
import '../error/rest_service_exception.dart';
import '../error/service_exception.dart';
import '../models/rest/rest_error.dart';
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import '../models/rest/uploaded_multi_response.dart';
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import '../models/rest/uploaded_response.dart';
import '../services/file_service.dart';
import '../services/link_service.dart';
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import '../util/logger.dart';
import 'base_model.dart';
class UploadModel extends BaseModel {
final Logger _logger = getLogger();
final FileService _fileService = locator<FileService>();
final LinkService _linkService = locator<LinkService>();
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TextEditingController _pasteTextController = TextEditingController();
StreamSubscription _intentDataStreamSubscription;
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bool createMulti = false;
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String fileName;
List<PlatformFile> paths;
String _extension;
bool loadingPath = false;
String errorMessage;
TextEditingController get pasteTextController => _pasteTextController;
void init() {
// For sharing images coming from outside the app while the app is in the memory
_intentDataStreamSubscription = ReceiveSharingIntent.getMediaStream().listen((List<SharedMediaFile> value) {
if (value != null && value.length > 0) {
setState(ViewState.Busy);
paths = value.map((sharedFile) {
return PlatformFile.fromMap({
'path': sharedFile.path,
'name': basename(sharedFile.path),
'size': File(sharedFile.path).lengthSync(),
'bytes': null
});
}).toList();
setState(ViewState.Idle);
}
}, onError: (err) {
setState(ViewState.Busy);
errorMessage = translate('upload.retrieval_intent');
_logger.e('Error while retrieving shared data: $err');
setState(ViewState.Idle);
});
// For sharing images coming from outside the app while the app is closed
ReceiveSharingIntent.getInitialMedia().then((List<SharedMediaFile> value) {
if (value != null && value.length > 0) {
setState(ViewState.Busy);
paths = value.map((sharedFile) {
return PlatformFile.fromMap({
'path': sharedFile.path,
'name': basename(sharedFile.path),
'size': File(sharedFile.path).lengthSync(),
'bytes': null
});
}).toList();
setState(ViewState.Idle);
}
});
// For sharing or opening urls/text coming from outside the app while the app is in the memory
_intentDataStreamSubscription = ReceiveSharingIntent.getTextStream().listen((String value) {
if (value != null && value.isNotEmpty) {
setState(ViewState.Busy);
pasteTextController.text = value;
setState(ViewState.Idle);
}
}, onError: (err) {
setState(ViewState.Busy);
errorMessage = translate('upload.retrieval_intent');
_logger.e('Error while retrieving shared data: $err');
setState(ViewState.Idle);
});
// For sharing or opening urls/text coming from outside the app while the app is closed
ReceiveSharingIntent.getInitialText().then((String value) {
if (value != null && value.isNotEmpty) {
setState(ViewState.Busy);
pasteTextController.text = value;
setState(ViewState.Idle);
}
});
}
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void toggleCreateMulti() {
setState(ViewState.Busy);
createMulti = !createMulti;
setState(ViewState.Idle);
}
void openFileExplorer() async {
setState(ViewState.Busy);
setStateMessage(translate('upload.file_explorer_open'));
loadingPath = true;
try {
paths = (await FilePicker.platform.pickFiles(
type: FileType.any,
allowMultiple: true,
withData: false,
withReadStream: true,
allowedExtensions: (_extension?.isNotEmpty ?? false) ? _extension?.replaceAll(' ', '')?.split(',') : null,
))
?.files;
} on PlatformException catch (e) {
_logger.e('Unsupported operation', e);
} catch (ex) {
_logger.e('An unknown error occurred', ex);
}
loadingPath = false;
fileName = paths != null ? paths.map((e) => e.name).toString() : '...';
setStateMessage(null);
setState(ViewState.Idle);
}
void clearCachedFiles() async {
setState(ViewState.Busy);
await FilePicker.platform.clearTemporaryFiles();
paths = null;
fileName = null;
errorMessage = null;
setState(ViewState.Idle);
}
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Future<List<String>> upload() async {
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setState(ViewState.Busy);
setStateMessage(translate('upload.uploading_now'));
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List<String> uploadedPasteIds = [];
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try {
List<File> files;
Map<String, String> additionalFiles;
if (pasteTextController.text != null && pasteTextController.text.isNotEmpty) {
additionalFiles = Map.from(
{'paste-${(new DateTime.now().millisecondsSinceEpoch / 1000).round()}.txt': pasteTextController.text});
}
if (paths != null && paths.length > 0) {
files = paths.map((e) => new File(e.path)).toList();
}
UploadedResponse response = await _fileService.upload(files, additionalFiles);
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uploadedPasteIds.addAll(response.data.ids);
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if (createMulti && response.data.ids.length > 1) {
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UploadedMultiResponse multiResponse = await _fileService.createMulti(response.data.ids);
uploadedPasteIds.add(multiResponse.data.urlId);
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}
clearCachedFiles();
_pasteTextController.clear();
errorMessage = null;
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return uploadedPasteIds;
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} catch (e) {
if (e is RestServiceException) {
if (e.statusCode == HttpStatus.notFound) {
errorMessage = translate('upload.errors.not_found');
} else if (e.statusCode == HttpStatus.forbidden) {
errorMessage = translate('api.forbidden');
} else if (e.statusCode != HttpStatus.notFound &&
e.statusCode != HttpStatus.forbidden &&
e.responseBody is RestError &&
e.responseBody.message != null) {
if (e.statusCode == HttpStatus.badRequest) {
errorMessage = translate('api.bad_request', args: {'reason': e.responseBody.message});
} else {
errorMessage = translate('api.general_rest_error_payload', args: {'message': e.responseBody.message});
}
} else {
errorMessage = translate('api.general_rest_error');
}
} else if (e is ServiceException && e.code == ErrorCode.SOCKET_ERROR) {
errorMessage = translate('api.socket_error');
} else if (e is ServiceException && e.code == ErrorCode.SOCKET_TIMEOUT) {
errorMessage = translate('api.socket_timeout');
} else {
errorMessage = translate('app.unknown_error');
setStateMessage(null);
setState(ViewState.Idle);
_logger.e('An unknown error occurred', e);
throw e;
}
}
setStateMessage(null);
setState(ViewState.Idle);
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return null;
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}
void openLink(String link) {
_linkService.open(link);
}
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@override
void dispose() {
_pasteTextController.dispose();
_intentDataStreamSubscription.cancel();
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super.dispose();
}
}