creta_world_weather_api 0.1.0

Weather API library for Creta widgets using met.no data with global city coverage.

example/main.dart

import 'package:flutter/material.dart';

import 'package:creta_world_weather_api/creta_world_weather_api.dart';

void main() {
  runApp(const CretaWeatherApp());
}

class CretaWeatherApp extends StatefulWidget {
  const CretaWeatherApp({super.key});

  @override
  State<CretaWeatherApp> createState() => _CretaWeatherAppState();
}

class _CretaWeatherAppState extends State<CretaWeatherApp> {
  final api = CretaWorldWeatherAPI.instance;

  String? selectedNation;
  String? selectedCity;
  WeatherNow? weather;
  bool loading = false;
  String? error;

  @override
  Widget build(BuildContext context) {
    final nations = api.getNationCodes();
    final cities = selectedNation != null ? api.getCityCodes(selectedNation!) : <String>[];

    return MaterialApp(
      title: 'Creta Weather Demo',
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Creta World Weather API Demo'),
        ),
        body: Padding(
          padding: const EdgeInsets.all(16),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              DropdownButtonFormField<String>(
                value: selectedNation,
                decoration: const InputDecoration(labelText: '국가 선택'),
                items: nations.entries
                    .map((entry) => DropdownMenuItem(
                          value: entry.key,
                          child: Text('${entry.value} (${entry.key})'),
                        ))
                    .toList(),
                onChanged: (value) {
                  setState(() {
                    selectedNation = value;
                    selectedCity = null;
                    weather = null;
                  });
                },
              ),
              const SizedBox(height: 16),
              DropdownButtonFormField<String>(
                value: selectedCity,
                decoration: const InputDecoration(labelText: '도시 선택'),
                items: cities
                    .map((city) => DropdownMenuItem(
                          value: city,
                          child: Text(city),
                        ))
                    .toList(),
                onChanged: (value) {
                  setState(() {
                    selectedCity = value;
                    weather = null;
                  });
                },
              ),
              const SizedBox(height: 24),
              ElevatedButton(
                onPressed: selectedNation != null && selectedCity != null && !loading
                    ? _loadWeather
                    : null,
                child: loading ? const CircularProgressIndicator() : const Text('현재 날씨 가져오기'),
              ),
              const SizedBox(height: 24),
              if (error != null)
                Text(
                  error!,
                  style: const TextStyle(color: Colors.red),
                ),
              if (weather != null) _WeatherCard(weather: weather!),
            ],
          ),
        ),
      ),
    );
  }

  Future<void> _loadWeather() async {
    setState(() {
      loading = true;
      error = null;
    });
    try {
      final result = await api.getWeatherNow(city: selectedCity!, nationCode: selectedNation!);
      setState(() {
        weather = result;
      });
    } catch (e) {
      setState(() {
        error = '날씨 정보를 가져오지 못했습니다: $e';
      });
    } finally {
      setState(() {
        loading = false;
      });
    }
  }
}

class _WeatherCard extends StatelessWidget {
  const _WeatherCard({required this.weather});

  final WeatherNow weather;

  @override
  Widget build(BuildContext context) {
    return Card(
      child: Padding(
        padding: const EdgeInsets.all(16),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Text('날씨 유형: ${weather.weatherType}'),
            Text('온도: ${weather.temperature.toStringAsFixed(1)}℃'),
            Text('강수량: ${weather.precipitation.toStringAsFixed(1)}mm'),
            Text('풍향: ${weather.windDirection.toStringAsFixed(0)}°'),
            Text('풍속: ${weather.windSpeed.toStringAsFixed(1)}m/s'),
            Text('자외선 지수: ${weather.uvIndex?.toStringAsFixed(1) ?? 'N/A'}'),
            if (weather.fetchedAt != null) Text('갱신 시각: ${weather.fetchedAt}'),
          ],
        ),
      ),
    );
  }
}