amirrezaghabeli
79 lines
2.1 KiB
Dart
79 lines
2.1 KiB
Dart
import 'dart:io';
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import 'package:dio/dio.dart';
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import 'package:flutter/foundation.dart';
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import 'package:path_provider/path_provider.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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class SvgCache {
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static final SvgCache _instance = SvgCache._internal();
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factory SvgCache() => _instance;
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SvgCache._internal();
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final Dio _dio = Dio();
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Directory? _cacheDir;
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Future<void> init() async {
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if (kIsWeb) {
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// Web doesn't need directory initialization
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return;
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}
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final appDir = await getApplicationDocumentsDirectory();
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_cacheDir = Directory('${appDir.path}/svg_cache');
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if (!await _cacheDir!.exists()) {
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await _cacheDir!.create(recursive: true);
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}
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}
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Future<String?> getCachedPath(String url) async {
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if (kIsWeb) {
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return await _getWebCachedPath(url);
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}
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final fileName = _getFileName(url);
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final file = File('${_cacheDir!.path}/$fileName');
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return await file.exists() ? file.path : null;
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}
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Future<String> cacheSvg(String url) async {
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if (kIsWeb) {
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return await _cacheWebSvg(url);
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}
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final fileName = _getFileName(url);
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final file = File('${_cacheDir!.path}/$fileName');
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final response = await _dio.get(
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url,
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options: Options(responseType: ResponseType.plain),
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);
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await file.writeAsString(response.data);
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return file.path;
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}
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Future<String?> _getWebCachedPath(String url) async {
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final prefs = await SharedPreferences.getInstance();
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final fileName = _getFileName(url);
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return prefs.containsKey('svg_cache_$fileName')
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? 'web_cache_$fileName'
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: null;
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}
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Future<String> _cacheWebSvg(String url) async {
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final response = await _dio.get(
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url,
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options: Options(responseType: ResponseType.plain),
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);
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final fileName = _getFileName(url);
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final prefs = await SharedPreferences.getInstance();
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// Store SVG data in SharedPreferences for web
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await prefs.setString('svg_cache_$fileName', response.data);
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return 'web_cache_$fileName';
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}
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String _getFileName(String url) {
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return url.split('/').last.replaceAll(RegExp(r'[^a-zA-Z0-9._-]'), '_');
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}
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}
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