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feat: added csv functionalities #2785
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csv functionalities
Yugesh-Kumar-S f4ba1ac
Merge branch 'flutter' of https://github.com/Yugesh-Kumar-S/pslab-and…
Yugesh-Kumar-S e62922a
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Yugesh-Kumar-S c94ca79
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,173 @@ | ||
| import 'dart:convert'; | ||
| import 'dart:io'; | ||
| import 'package:csv/csv.dart'; | ||
| import 'package:file_picker/file_picker.dart'; | ||
| import 'package:path_provider/path_provider.dart'; | ||
| import 'package:permission_handler/permission_handler.dart'; | ||
| import 'package:pslab/others/logger_service.dart'; | ||
| import 'package:pslab/view/about_us_screen.dart'; | ||
| import 'package:share_plus/share_plus.dart'; | ||
| import 'package:intl/intl.dart'; | ||
|
|
||
| class CsvService { | ||
| static const String csvDirectory = 'PSLab'; | ||
|
|
||
| Future<Directory> getInstrumentDirectory(String instrumentName) async { | ||
| if (Platform.isAndroid) { | ||
| await requestStoragePermission(); | ||
| final directory = | ||
| Directory('/storage/emulated/0/Android/media/PSLab/$instrumentName'); | ||
| if (!await directory.exists()) { | ||
| await directory.create(recursive: true); | ||
| } | ||
| return directory; | ||
| } else if (Platform.isIOS || | ||
| Platform.isWindows || | ||
| Platform.isMacOS || | ||
| Platform.isLinux) { | ||
| final dir = await getApplicationDocumentsDirectory(); | ||
| final directory = Directory('${dir.path}/PSLab/$instrumentName'); | ||
| if (!await directory.exists()) { | ||
| await directory.create(recursive: true); | ||
| } | ||
| return directory; | ||
| } else { | ||
| throw UnsupportedError('Unsupported platform'); | ||
| } | ||
| } | ||
|
|
||
| Future<void> requestStoragePermission() async { | ||
| if (Platform.isAndroid) { | ||
| final status = await Permission.manageExternalStorage.request(); | ||
| if (!status.isGranted) { | ||
| await openAppSettings(); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| Future<File?> saveCsvFile( | ||
| String instrumentName, String fileName, List<List<dynamic>> data) async { | ||
| try { | ||
| if (data.length <= 1) { | ||
| logger.w('No data recorded to save for $fileName'); | ||
| return null; | ||
| } | ||
| final directory = await getInstrumentDirectory(instrumentName); | ||
|
|
||
| String finalFileName; | ||
| if (fileName.isEmpty) { | ||
| finalFileName = | ||
| '${DateFormat('yyyy-MM-dd_HH-mm-ss').format(DateTime.now())}.csv'; | ||
| } else { | ||
| finalFileName = fileName.endsWith('.csv') ? fileName : '$fileName.csv'; | ||
| } | ||
|
|
||
| final file = File('${directory.path}/$finalFileName'); | ||
|
|
||
| String csvData = const ListToCsvConverter().convert(data); | ||
| await file.writeAsString(csvData); | ||
| logger.i('CSV file saved at: ${file.path}'); | ||
| return file; | ||
| } catch (e) { | ||
| logger.e('Error saving CSV file: $e'); | ||
| return null; | ||
| } | ||
| } | ||
|
|
||
| Future<List<FileSystemEntity>> getSavedFiles(String instrumentName) async { | ||
| try { | ||
| final directory = await getInstrumentDirectory(instrumentName); | ||
| final files = directory | ||
| .listSync() | ||
| .where((item) => item.path.endsWith('.csv')) | ||
| .toList(); | ||
| files.sort( | ||
| (a, b) => b.statSync().modified.compareTo(a.statSync().modified)); | ||
| return files; | ||
| } catch (e) { | ||
| logger.e('Error getting saved files: $e'); | ||
| return []; | ||
| } | ||
| } | ||
|
|
||
| Future<void> deleteFile(String filePath) async { | ||
| try { | ||
| final file = File(filePath); | ||
| if (await file.exists()) { | ||
| await file.delete(); | ||
| logger.i('File deleted: $filePath'); | ||
| } | ||
| } catch (e) { | ||
| logger.e('Error deleting file: $e'); | ||
| } | ||
| } | ||
|
|
||
| Future<void> deleteAllFiles(String instrumentName) async { | ||
| try { | ||
| final directory = await getInstrumentDirectory(instrumentName); | ||
| if (await directory.exists()) { | ||
| await directory.delete(recursive: true); | ||
| logger.i('All files for $instrumentName deleted.'); | ||
| } | ||
| } catch (e) { | ||
| logger.e('Error deleting all files for $instrumentName: $e'); | ||
| } | ||
| } | ||
|
|
||
| Future<void> shareFile(String filePath) async { | ||
| try { | ||
| final xFile = XFile(filePath); | ||
| await SharePlus.instance.share( | ||
| ShareParams(files: [xFile], text: appLocalizations.sharingMessage)); | ||
| } catch (e) { | ||
| logger.e('Error sharing file: $e'); | ||
| } | ||
| } | ||
|
|
||
| Future<List<List<dynamic>>?> pickAndReadCsvFile() async { | ||
| try { | ||
| final result = await FilePicker.platform.pickFiles( | ||
| type: FileType.custom, | ||
| allowedExtensions: ['csv'], | ||
| ); | ||
|
|
||
| if (result != null && result.files.single.path != null) { | ||
| final file = File(result.files.single.path!); | ||
| return await readCsvFromFile(file); | ||
| } | ||
| } catch (e) { | ||
| logger.e('Error picking or reading CSV file: $e'); | ||
| } | ||
| return null; | ||
| } | ||
|
|
||
| Future<List<List<dynamic>>> readCsvFromFile(File file) async { | ||
| try { | ||
| final input = file.openRead(); | ||
| final fields = await input | ||
| .transform(utf8.decoder) | ||
| .transform(const CsvToListConverter(shouldParseNumbers: true)) | ||
| .toList(); | ||
| return fields; | ||
| } catch (e) { | ||
| logger.e('Error reading CSV from file: $e'); | ||
| return []; | ||
| } | ||
| } | ||
|
|
||
| void writeMetaData(String instrumentName, List<List<dynamic>> data) { | ||
| if (data.isNotEmpty && data[0].isNotEmpty && data[0][0] == instrumentName) { | ||
| return; | ||
| } | ||
|
|
||
| final now = DateTime.now(); | ||
| final sdf = DateFormat('yyyy-MM-dd HH:mm:ss'); | ||
| final metaDataTime = sdf.format(now); | ||
| final metaData = [ | ||
| instrumentName, | ||
| metaDataTime.split(' ')[0], | ||
| metaDataTime.split(' ')[1] | ||
| ]; | ||
| data.insert(0, metaData); | ||
| } | ||
| } | ||
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