84 lines
2.2 KiB
Dart
84 lines
2.2 KiB
Dart
import 'dart:convert';
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import 'dart:io';
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import 'package:xml/xml.dart';
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import 'package:http/http.dart' as http;
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import 'package:shared_preferences/shared_preferences.dart';
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class FetchMenu {
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static var lastFetch = DateTime.now();
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static var fetched = false;
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static Future<List<String>> get() async {
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List<String> menus = [];
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if (!fetched || DateTime.now().difference(lastFetch).inHours >= 2) {
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menus = await fromRequest();
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fetched = true;
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} else {
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menus = await fromCache();
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}
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return menus;
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}
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static Future<List<String>> fromCache() async {
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return await loadCache();
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}
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static Future<List<String>> fromRequest() async {
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List<String> menus = [];
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var now = DateTime.now();
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var today = "${now.day.toString().padLeft(2, '0')}.${now.month.toString().padLeft(2, '0')}.${now.year}";
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http.Response resp = await http.get(Uri.parse(
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"https://www.swfr.de/apispeiseplan?&type=98&tx_speiseplan_pi1[apiKey]=c3841e89a2c8c301b890723ecdb786ad&tx_speiseplan_pi1[ort]=677")); //Api Key lays here, modify this shit when you have time
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var xmlContent = XmlDocument.parse(utf8.decode(resp.bodyBytes));
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for (var tagesplan in xmlContent.findAllElements("tagesplan")){
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var datum = tagesplan.getAttribute('datum')?.trim();
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if (datum == today){
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for (var menu in tagesplan.findElements('menue')){
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var name = menu.findElements('name').map((e) => e.text).join(", ");
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menus.add(name);
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}
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}
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}
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await storeCache(menus);
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lastFetch = DateTime.now();
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return menus;
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}
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static Future<void> storeCache(List<String> menus) async {
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var prefs = await SharedPreferences.getInstance();
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for (var i = 0; i < 4; i++) {
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prefs.setString("menuCache$i", "");
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if (i < menus.length) {
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prefs.setString("menuCache$i", menus[i]);
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}
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}
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}
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static Future<List<String>> loadCache() async {
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var prefs = await SharedPreferences.getInstance();
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List<String> menus = [];
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for (var i = 0; i < 4; i++) {
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var curr = prefs.getString("menuCache$i");
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if (curr != "") {
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menus.add(curr!);
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}
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}
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return menus;
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}
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}
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