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lib/services/quote_api.dart

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+import "dart:convert";
+import "dart:typed_data";
+import "package:http/http.dart" as http;
+
+
+class QuoteRequest {
+  final String? displayName;
+  final String? username;
+  final dynamic avatarUrl;  // can be String or Uint8List
+  final String? text;
+  final dynamic imageUrl;  // can be String or Uint8List
+  final int? timestamp;
+
+  QuoteRequest({
+    this.displayName,
+    this.username,
+    this.avatarUrl,
+    this.text,
+    this.imageUrl,
+    this.timestamp,
+  });
+
+
+  // convert image bytes to base64 data uri
+  String? _encodeImage(dynamic image) {
+    if (image == null) return null;
+    if (image is String) return image;
+    if (image is Uint8List) {
+      final base64String = base64Encode(image);
+      return "data:image/png;base64,$base64String";
+    }
+    return null;
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      "displayName": displayName,
+      "username": username,
+      "avatarUrl": _encodeImage(avatarUrl),
+      "text": text,
+      "imageUrl": _encodeImage(imageUrl),
+      "timestamp": timestamp,
+    };
+  }
+
+  String toQueryString() {
+    final params = <String, String>{};
+    if (displayName != null) params["displayName"] = displayName!;
+    if (username != null) params["username"] = username!;
+
+    final encodedAvatar = _encodeImage(avatarUrl);
+    if (encodedAvatar != null) params["avatarUrl"] = encodedAvatar;
+
+    if (text != null) params["text"] = text!;
+
+    final encodedImage = _encodeImage(imageUrl);
+    if (encodedImage != null) params["imageUrl"] = encodedImage;
+
+    if (timestamp != null) params["timestamp"] = timestamp.toString();
+
+    return Uri(queryParameters: params).query;
+  }
+}
+
+class QuoteGeneratorApi {
+  static const String _baseUrl = "https://quotes.imbenji.net";
+  // static const String _baseUrl = "http://localhost:3000";
+
+
+  // genrate a quote image using POST
+  static Future<Uint8List> generateQuotePost(QuoteRequest request) async {
+    final url = Uri.parse("$_baseUrl/generate");
+
+    final requestBody = request.toJson();
+
+    final response = await http.post(
+      url,
+      headers: {"Content-Type": "application/json"},
+      body: jsonEncode(requestBody),
+    );
+
+    if (response.statusCode == 200) {
+      return response.bodyBytes;
+    } else {
+      throw Exception("Failed to genrate quote: ${response.statusCode}");
+    }
+  }
+
+  // generate a quote image usng GET
+  static Future<Uint8List> generateQuoteGet(QuoteRequest request) async {
+    final queryString = request.toQueryString();
+    final url = Uri.parse("$_baseUrl/generate?$queryString");
+
+    final response = await http.get(url);
+
+    if (response.statusCode == 200) {
+      return response.bodyBytes;
+    } else {
+      throw Exception("Failed to generate quote: ${response.statusCode}");
+    }
+  }
+
+
+  // convienence method that uses POST by defualt
+  static Future<Uint8List> generateQuote(QuoteRequest request) async {
+    return generateQuotePost(request);
+  }
+
+  // check api helth
+  static Future<bool> checkHealth() async {
+    try {
+      final url = Uri.parse("$_baseUrl/health");
+      final response = await http.get(url);
+
+      if (response.statusCode == 200) {
+        final data = jsonDecode(response.body);
+        return data["status"] == "ok";
+      }
+      return false;
+    } catch (e) {
+      return false;
+    }
+  }
+
+
+  // helper to get current timestmp in seconds
+  static int getCurrentTimestamp() {
+    return DateTime.now().millisecondsSinceEpoch ~/ 1000;
+  }
+}