Truong Nguyen interview

gistfile1.txt

package interview;

import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import jdk.incubator.http.HttpClient;
import jdk.incubator.http.HttpRequest;
import jdk.incubator.http.HttpResponse;

import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Comparator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
import java.util.TreeSet;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.stream.Collectors;

public class Interview {
    public static void main(String[] args) throws URISyntaxException, InterruptedException, ExecutionException, IOException {
        HttpClient client = HttpClient.newHttpClient();
        HttpRequest request = HttpRequest.newBuilder()
                .uri(new URI("https://gist.githubusercontent.com/samuraitruong/2451c6cb7596863f1b15993334b08c52/raw/006040d3b09f309c370c9582118b346ce43d609a/pets.json"))
                .GET()
                .build();
        CompletableFuture<HttpResponse<String>> response = client.sendAsync(request, HttpResponse.BodyHandler.asString());
        Thread.sleep(3000);

        if(response.isDone()) {
            String body = response.get().body();

            ObjectMapper objectMapper = new ObjectMapper();
            List<Person> people = objectMapper.readValue(body, new TypeReference<List<Person>>(){});

            Map<String, Set<String>> result = new TreeMap<>(Comparator.reverseOrder());
            people.forEach(person -> {
                Set<String> cats = result.computeIfAbsent(person.getGender(), k -> new TreeSet<>(Comparator.naturalOrder()));
                if (person.getPets() != null) {
                    cats.addAll(
                            person.getPets().stream()
                                    .filter(pet -> pet.getType() == AnimalType.Cat)
                                    .map(Pet::getName).collect(Collectors.toSet())
                    );
                }
            });
            System.out.println(result);
        } else {
            response.cancel(true);
            System.out.println("Request took more than 5 seconds... cancelling.");
        }
    }

    private enum AnimalType {
        Cat,
        Dog,
        Fish
    }

    private static class Pet {
        private String name;
        private AnimalType type;

        String getName() {
            return name;
        }

        void setName(String name) {
            this.name = name;
        }

        AnimalType getType() {
            return type;
        }

        void setType(AnimalType type) {
            this.type = type;
        }
    }

    private static class Person {
        private String name;
        private String gender;
        private byte age;
        private List<Pet> pets;

        String getName() {
            return name;
        }

        void setName(String name) {
            this.name = name;
        }

        String getGender() {
            return gender;
        }

        void setGender(String gender) {
            this.gender = gender;
        }

        byte getAge() {
            return age;
        }

        void setAge(byte age) {
            this.age = age;
        }

        List<Pet> getPets() {
            return pets;
        }

        void setPets(List<Pet> pets) {
            this.pets = pets;
        }
    }
}