VitalApp/lib/architecture/storage/text_storage.dart

import 'dart:convert';
import 'dart:typed_data';

import 'package:fis_common/index.dart';
import 'package:fis_common/logger/logger.dart';
import 'package:vitalapp/architecture/storage/file_storage_native_and_web.dart';
import 'package:vitalapp/architecture/values/store_keys.dart';
import 'package:vitalapp/rpc.dart';

import 'shared_storage.dart';

/// 文本存储
class TextStorage {
  TextStorage({
    required this.fileName,
    this.directory = "",
  });

  final String fileName;
  final String directory;

  FileStorageNativeAndWeb? _fileStorage;

  Future<bool> save(String text) async {
    try {
      final bytes = Uint8List.fromList(utf8.encode(text));
      _fileStorage ??= FileStorageNativeAndWeb.createInstance(directory);
      final result = await _fileStorage!.save(fileName, bytes);
      return result;
    } catch (e) {
      logger.e("TextStorage save text error.", e);
      return false;
    }
  }

  Future<String?> read() async {
    _fileStorage ??= FileStorageNativeAndWeb.createInstance(directory);
    final bytes = await _fileStorage!.read(fileName);
    if (bytes == null || bytes.isEmpty) return null;

    try {
      final str = utf8.decode(bytes);
      return str;
    } catch (e) {
      logger.e("TextStorage convert bytes to string error.", e);
      return null;
    }
  }

  Future<bool> delete() async {
    try {
      _fileStorage ??= FileStorageNativeAndWeb.createInstance(directory);
      final result = await _fileStorage!.delete(fileName);
      return result;
    } catch (e) {
      logger.e("TextStorage clear error.", e);
      return false;
    }
  }

  Future<bool> deleteDirectory() async {
    try {
      _fileStorage ??= FileStorageNativeAndWeb.createInstance(directory);
      final result = await _fileStorage!.deleteDirectory(directory);
      return result;
    } catch (e) {
      logger.e("TextStorage clear error.", e);
      return false;
    }
  }
}

///纯web端的缓存
class TextStoragePureWeb extends TextStorage {
  TextStoragePureWeb(String fileName) : super(fileName: fileName);

  @override
  Future<String?> read() async {
    final storeKey = _getStoreKey();
    final data = SharedStorageService.ins.getString(storeKey);
    return data;
  }

  @override
  Future<bool> save(String text) async {
    final storeKey = _getStoreKey();
    final saved = await SharedStorageService.ins.setString(storeKey, text);
    return saved;
  }

  String _getStoreKey() => StoreKeys.STORE_TEXTDATA_GEN.format([this.fileName]);
}

class TextStorageShellWeb extends TextStorage {
  TextStorageShellWeb(String fileName) : super(fileName: fileName);

  @override
  Future<String?> read() async {
    return await rpc.platform.getText(this.fileName);
  }

  @override
  Future<bool> save(String text) async {
    return await rpc.platform.saveText(this.fileName, text);
  }
}