weatherforecast

Author: Sergey Lukichev

Drafts/weatherforecast/.gitignore

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+/target/
+!.mvn/wrapper/maven-wrapper.jar
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/build/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/

Drafts/weatherforecast/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>de.telran</groupId>
+    <artifactId>weatherforecast</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <dependencies>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.12</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>2.9.8</version>
+        </dependency>
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-core</artifactId>
+            <version>3.3.3</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+</project>

Drafts/weatherforecast/src/main/java/de/telran/weather/WeatherForecastApp.java

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+package de.telran.weather;
+
+import de.telran.weather.service.InputOutputService;
+import de.telran.weather.service.WeatherService;
+
+public class WeatherForecastApp {
+    private InputOutputService inputOutputService;
+    private WeatherService service;
+
+    public WeatherForecastApp(InputOutputService inputOutputService, WeatherService service) {
+        this.inputOutputService = inputOutputService;
+        this.service = service;
+    }
+
+    public void execute() throws Exception {
+        String s = inputOutputService.readValue();
+        String result = service.getWeatherByCityName(s);
+        inputOutputService.print(result);
+    }
+
+    public static void main(String[] args) {
+
+    }
+}

Drafts/weatherforecast/src/main/java/de/telran/weather/entity/ConsolidatedWeather.java

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+package de.telran.weather.entity;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+
+@JsonIgnoreProperties(ignoreUnknown = true)
+public class ConsolidatedWeather {
+    private String theTemp;
+
+    public ConsolidatedWeather() {
+
+    }
+
+    public ConsolidatedWeather(String theTemp) {
+        this.theTemp = theTemp;
+    }
+
+    public String getTheTemp() {
+        return theTemp;
+    }
+
+    public void setTheTemp(String theTemp) {
+        this.theTemp = theTemp;
+    }
+
+    @Override
+    public String toString() {
+        return "ConsolidatedWeather{" +
+                "theTemp='" + theTemp + '\'' +
+                '}';
+    }
+}

Drafts/weatherforecast/src/main/java/de/telran/weather/entity/Forecast.java

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+package de.telran.weather.entity;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+
+import java.util.Arrays;
+
+@JsonIgnoreProperties(ignoreUnknown = true)
+public class Forecast {
+    private ConsolidatedWeather[] consolidatedWeather;
+
+    public Forecast() {
+
+    }
+
+    public Forecast(ConsolidatedWeather[] consolidatedWeather) {
+        this.consolidatedWeather = consolidatedWeather;
+    }
+
+    public ConsolidatedWeather[] getConsolidatedWeather() {
+        return consolidatedWeather;
+    }
+
+    public void setConsolidatedWeather(ConsolidatedWeather[] consolidatedWeather) {
+        this.consolidatedWeather = consolidatedWeather;
+    }
+
+    @Override
+    public String toString() {
+        return "Forecast{" +
+                "consolidatedWeather=" + Arrays.toString(consolidatedWeather) +
+                '}';
+    }
+}

Drafts/weatherforecast/src/main/java/de/telran/weather/entity/SearchResult.java

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+package de.telran.weather.entity;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+
+@JsonIgnoreProperties(ignoreUnknown = true)
+public class SearchResult {
+
+    private String woeid;
+
+    public SearchResult() {
+
+    }
+
+    public SearchResult(String woeid) {
+        this.woeid = woeid;
+    }
+
+    public String getWoeid() {
+        return woeid;
+    }
+
+    public void setWoeid(String woeid) {
+        this.woeid = woeid;
+    }
+
+    @Override
+    public String toString() {
+        return "SearchResult{" +
+                "woeid='" + woeid + '\'' +
+                '}';
+    }
+}

Drafts/weatherforecast/src/main/java/de/telran/weather/service/InputOutputService.java

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+package de.telran.weather.service;
+
+import java.util.Scanner;
+
+public class InputOutputService {
+
+    private Scanner scanner;
+
+    public String readValue() {
+        return null;
+    }
+
+    public void print(String value) {
+        System.out.println(value);
+    }
+}

Drafts/weatherforecast/src/main/java/de/telran/weather/service/WeatherGateway.java

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+package de.telran.weather.service;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import de.telran.weather.entity.Forecast;
+import de.telran.weather.entity.SearchResult;
+
+import java.net.URL;
+
+public class WeatherGateway {
+
+    private final String SEARCH_URL = "https://www.metaweather.com/api/location/search/?query=";
+    private final String FORECAST_URL = "https://www.metaweather.com/api/location/";
+
+    private ObjectMapper mapper;
+
+    public WeatherGateway(ObjectMapper mapper) {
+        this.mapper = mapper;
+    }
+
+    public SearchResult[] findCityByName(String cityName) throws Exception {
+
+        URL searchUrl = new URL(SEARCH_URL + cityName);
+
+        SearchResult[] searchResults = mapper.readValue(searchUrl, SearchResult[].class);
+
+        return searchResults;
+    }
+
+    public Forecast getWeatherByWoeid(String woeid) throws Exception {
+        URL forecastUrl = new URL(FORECAST_URL + woeid);
+
+        Forecast forecast = mapper.readValue(forecastUrl, Forecast.class);
+
+        return forecast;
+
+    }
+}

Drafts/weatherforecast/src/main/java/de/telran/weather/service/WeatherService.java

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+package de.telran.weather.service;
+
+import de.telran.weather.entity.Forecast;
+import de.telran.weather.entity.SearchResult;
+
+public class WeatherService {
+
+    private WeatherGateway gateway;
+
+    public WeatherService(WeatherGateway gateway) {
+        this.gateway = gateway;
+    }
+
+    public String getWeatherByCityName(String cityName) throws Exception {
+        SearchResult[] cityByName = gateway.findCityByName(cityName);
+        if(cityByName.length == 0) {
+            throw new RuntimeException("No results for "+cityName);
+        }
+        Forecast forecast = gateway.getWeatherByWoeid(cityByName[0].getWoeid());
+        return forecast.getConsolidatedWeather()[0].getTheTemp();
+    }
+}

Drafts/weatherforecast/src/test/java/de/telran/weather/service/WeatherGatewayTest.java

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+package de.telran.weather.service;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.PropertyNamingStrategy;
+import de.telran.weather.entity.Forecast;
+import de.telran.weather.entity.SearchResult;
+import org.junit.Test;
+
+import static org.junit.Assert.assertTrue;
+
+public class WeatherGatewayTest {
+
+    @Test
+    public void testFindCityByName() throws Exception {
+        WeatherGateway gateway = new WeatherGateway(new ObjectMapper());
+
+        SearchResult[] berlins = gateway.findCityByName("Berlin");
+
+        assertTrue(berlins.length == 1);
+    }
+
+    @Test
+    public void testGetWeatherByWoeid() throws Exception {
+        ObjectMapper mapper = new ObjectMapper();
+        mapper.setPropertyNamingStrategy(PropertyNamingStrategy.SNAKE_CASE);
+        WeatherGateway gateway = new WeatherGateway(mapper);
+        Forecast weatherByWoeid = gateway.getWeatherByWoeid("638242");
+        System.out.println(weatherByWoeid);
+    }
+}