Initial commit

Signed-off-by: Hans Kokx <hans.d.kokx@gmail.com>
2026-03-19 20:29:22 +01:00
commit f050d10a1d
137 changed files with 5877 additions and 0 deletions
@@ -0,0 +1,38 @@
+import 'dart:convert';
+
+import 'package:http/http.dart' as http;
+import 'package:intl/intl.dart';
+
+class OpenExchangeService {
+  OpenExchangeService({required this.httpClient, required this.apiKey});
+
+  final http.Client httpClient;
+  final String apiKey;
+
+  Future<double> fetchUsdToSekRate({required DateTime estDate}) async {
+    if (apiKey == 'REPLACE_WITH_YOUR_OPENEXCHANGE_API_KEY') {
+      throw StateError('OpenExchange API key is not configured.');
+    }
+
+    final date = DateFormat('yyyy-MM-dd').format(estDate);
+    final uri = Uri.https(
+      'openexchangerates.org',
+      '/api/historical/$date.json',
+      <String, String>{'app_id': apiKey, 'symbols': 'SEK'},
+    );
+
+    final response = await httpClient.get(uri);
+    if (response.statusCode != 200) {
+      throw StateError('OpenExchange request failed (${response.statusCode}).');
+    }
+
+    final json = jsonDecode(response.body) as Map<String, dynamic>;
+    final rates = json['rates'] as Map<String, dynamic>?;
+    final sek = rates?['SEK'];
+    if (sek == null) {
+      throw StateError('SEK rate was missing in API response.');
+    }
+
+    return (sek as num).toDouble();
+  }
+}