import 'dart:convert';

import 'package:dio/dio.dart';

import 'events/events.dart';

class AnalyticsSender {
  final Dio _dio;
  final String endpoint;

  AnalyticsSender({required this.endpoint, Dio? dio}) : _dio = dio ?? Dio();

  Future<void> send(List<BaseAnalyticsEvent> events) async {
    if (events.isEmpty) return;

    final body = {'events': events.map((e) => e.toJson()).toList()};

    try {
      await _dio.post(
        endpoint,
        data: jsonEncode(body),
        options: Options(
          headers: {'Content-Type': 'application/json'},
          sendTimeout: const Duration(seconds: 10),
          receiveTimeout: const Duration(seconds: 10),
        ),
      );
    } on DioException catch (e) {
      throw AnalyticsSendException(
        'Failed to send analytics events: ${e.message}',
        events: events,
      );
    }
  }
}

class AnalyticsSendException implements Exception {
  final String message;
  final List<BaseAnalyticsEvent> events;

  AnalyticsSendException(this.message, {required this.events});

  @override
  String toString() => 'AnalyticsSendException: $message';
}