feature: added CLI interface

src/main/java/ru/dima/weather/WeatherApp.java

@@ -1,8 +1,15 @@
 package ru.dima.weather;
 
 import ru.dima.weather.city.CityByIpResolver;
+import ru.dima.weather.cli.CLIInputReader;
+import ru.dima.weather.cli.WeatherProviderCLISelector;
 import ru.dima.weather.http.HttpRequester;
 import ru.dima.weather.provider.OpenWeatherMapWeatherProvider;
+import ru.dima.weather.provider.WeatherProvider;
+import ru.dima.weather.provider.WeatherProviderRegistry;
+
+import java.util.Scanner;
+import java.util.stream.Collectors;
 
 /*
  1. Брать текущий IP
@@ -14,9 +21,16 @@ public class WeatherApp {
     public static void main(String[] args) {
         var httpRequester = new HttpRequester();
         var cityByIpResolver = new CityByIpResolver(httpRequester);
-        System.out.println(cityByIpResolver.getCurrentCityViaIP());
+        var weatherProviderRegistry = new WeatherProviderRegistry();
 
         var openWeatherMapProvider = new OpenWeatherMapWeatherProvider(httpRequester, "29ed5ca47c3d0c32385b18f1e82e522f");
-        System.out.println(openWeatherMapProvider.getWeeklyWeatherInCity(cityByIpResolver.getCurrentCityViaIP()));
+        weatherProviderRegistry.registerWeatherProvider(openWeatherMapProvider);
+
+        var weatherProviderCliSelector = new WeatherProviderCLISelector(new CLIInputReader(System.in), weatherProviderRegistry);
+        var weatherProviderSelectedByUser = weatherProviderCliSelector.selectWeatherProviderFromCLI();
+
+        System.out.println(weatherProviderSelectedByUser.getWeeklyWeatherInCity(cityByIpResolver.getCurrentCityViaIP()));
+
+//        System.out.println(openWeatherMapProvider.getWeeklyWeatherInCity(cityByIpResolver.getCurrentCityViaIP()));
     }
 }

src/main/java/ru/dima/weather/cli/CLIInputReader.java

@@ -0,0 +1,36 @@
+package ru.dima.weather.cli;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+
+public class CLIInputReader {
+    private BufferedReader scanner;
+
+    public CLIInputReader(InputStream systemIn) {
+        this.scanner = new BufferedReader(new InputStreamReader(systemIn));
+    }
+
+    public String readString() {
+        try {
+            return scanner.readLine();
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public int readInteger() {
+        try {
+            var inputString = readString();
+            if (inputString == null) {
+                throw new IllegalStateException("IO Closed");
+            }
+
+            return Integer.parseInt(inputString);
+        } catch (NumberFormatException e) {
+            System.out.println("Попробуй еще раз, это не число");
+            return readInteger();
+        }
+    }
+}

src/main/java/ru/dima/weather/cli/WeatherProviderCLISelector.java

@@ -0,0 +1,38 @@
+package ru.dima.weather.cli;
+
+import ru.dima.weather.provider.WeatherProvider;
+import ru.dima.weather.provider.WeatherProviderRegistry;
+
+public class WeatherProviderCLISelector {
+    private CLIInputReader cliInputReader;
+    private WeatherProviderRegistry weatherProviderRegistry;
+
+    public WeatherProviderCLISelector(CLIInputReader cliInputReader, WeatherProviderRegistry weatherProviderRegistry) {
+        this.cliInputReader = cliInputReader;
+        this.weatherProviderRegistry = weatherProviderRegistry;
+    }
+
+    public WeatherProvider selectWeatherProviderFromCLI() {
+        System.out.println("Для продолжения выбери сервис, предоставляющие погоду из представленных ниже.");
+        System.out.println("Доступные сервисы погоды:");
+
+        var weatherProviders = weatherProviderRegistry.getAllWeatherProviders();
+        for (var weatherProviderIndex = 0; weatherProviderIndex < weatherProviders.size(); weatherProviderIndex ++) {
+            var weatherProvider = weatherProviders.get(weatherProviderIndex);
+            System.out.println((weatherProviderIndex + 1) + ". '" + weatherProvider.getName() + "'");
+        }
+
+        var weatherProviderIndexSelectedByUser = requestWeatherProviderIndexFromCLI();
+        while (weatherProviderIndexSelectedByUser < 1 || weatherProviderIndexSelectedByUser > weatherProviders.size()) {
+            System.out.println("Число должно быть от 1 до " + weatherProviders.size() + ". Попробуй еще раз.");
+            weatherProviderIndexSelectedByUser = requestWeatherProviderIndexFromCLI();
+        }
+
+        return weatherProviders.get(weatherProviderIndexSelectedByUser - 1);
+    }
+
+    private int requestWeatherProviderIndexFromCLI() {
+        System.out.print(">> Введите номер сервиса: ");
+        return cliInputReader.readInteger();
+    }
+}

src/main/java/ru/dima/weather/provider/WeatherProviderRegistry.java

@@ -0,0 +1,18 @@
+package ru.dima.weather.provider;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+public class WeatherProviderRegistry {
+
+    private List<WeatherProvider> registeredWeatherProviders = new ArrayList<>();
+
+    public void registerWeatherProvider(WeatherProvider weatherProvider) {
+        registeredWeatherProviders.add(weatherProvider);
+    }
+
+    public List<WeatherProvider> getAllWeatherProviders() {
+        return Collections.unmodifiableList(registeredWeatherProviders);
+    }
+}