Adding trending endpoint

src/main/java/com/uwetrottmann/tmdb2/Tmdb.java

@@ -26,6 +26,7 @@
 import com.uwetrottmann.tmdb2.services.ReviewsService;
 import com.uwetrottmann.tmdb2.services.SearchService;
 import com.uwetrottmann.tmdb2.services.TimezonesService;
+import com.uwetrottmann.tmdb2.services.TrendingService;
 import com.uwetrottmann.tmdb2.services.TvEpisodesService;
 import com.uwetrottmann.tmdb2.services.TvSeasonsService;
 import com.uwetrottmann.tmdb2.services.TvService;
@@ -361,6 +362,9 @@ public TvEpisodesService tvEpisodesService() {
         return getRetrofit().create(TvEpisodesService.class);
     }
 
+    public TrendingService trendingService() {
+        return getRetrofit().create(TrendingService.class);
+    }
 
     public DiscoverMovieBuilder discoverMovie() {
         return new DiscoverMovieBuilder(discoverService());

src/main/java/com/uwetrottmann/tmdb2/TmdbHelper.java

@@ -14,6 +14,7 @@
 import com.uwetrottmann.tmdb2.entities.PersonCastCredit;
 import com.uwetrottmann.tmdb2.entities.PersonCrewCredit;
 import com.uwetrottmann.tmdb2.entities.RatingObject;
+import com.uwetrottmann.tmdb2.entities.Trending;
 import com.uwetrottmann.tmdb2.enumerations.MediaType;
 import com.uwetrottmann.tmdb2.enumerations.Status;
 import com.uwetrottmann.tmdb2.enumerations.VideoType;
@@ -160,6 +161,37 @@ public static GsonBuilder getGsonBuilder() {
                         return null;
                     }
                 });
+
+        builder.registerTypeAdapter(Trending.class,
+                (JsonDeserializer<Trending>) (jsonElement, type, jsonDeserializationContext) -> {
+                	Trending trending = new Trending();
+                    if (jsonElement.getAsJsonObject().get("media_type") != null) {
+                    	trending.media_type = jsonDeserializationContext
+                                .deserialize(jsonElement.getAsJsonObject().get("media_type"), MediaType.class);
+                    } else {
+                        if (jsonElement.getAsJsonObject().get("first_air_date") != null) {
+                        	trending.media_type = MediaType.TV;
+                        } else if (jsonElement.getAsJsonObject().get("name") != null) {
+                        	trending.media_type = MediaType.PERSON;
+                        } else if (jsonElement.getAsJsonObject().get("title") != null) {
+                        	trending.media_type = MediaType.MOVIE;
+                        }
+                    }
+                    switch (trending.media_type) {
+                        case MOVIE:
+                        	trending.movie = jsonDeserializationContext.deserialize(jsonElement, BaseMovie.class);
+                            break;
+                        case TV:
+                        	trending.tvShow = jsonDeserializationContext.deserialize(jsonElement, BaseTvShow.class);
+                            break;
+                        case PERSON:
+                        	trending.person = jsonDeserializationContext.deserialize(jsonElement, BasePerson.class);
+                            break;
+                    }
+
+
+                    return trending;
+                });
 
         return builder;
     }

src/main/java/com/uwetrottmann/tmdb2/entities/Trending.java

@@ -0,0 +1,13 @@
+package com.uwetrottmann.tmdb2.entities;
+
+import com.uwetrottmann.tmdb2.enumerations.MediaType;
+
+public class Trending {
+
+    public BaseTvShow tvShow;
+    public BaseMovie movie;
+    public BasePerson person;
+
+    public MediaType media_type;
+
+}

src/main/java/com/uwetrottmann/tmdb2/entities/TrendingResultsPage.java

@@ -0,0 +1,4 @@
+package com.uwetrottmann.tmdb2.entities;
+
+public class TrendingResultsPage extends BaseResultsPage<Trending> {
+}

src/main/java/com/uwetrottmann/tmdb2/services/TrendingService.java

@@ -0,0 +1,20 @@
+package com.uwetrottmann.tmdb2.services;
+
+import com.uwetrottmann.tmdb2.entities.TrendingResultsPage;
+import retrofit2.Call;
+import retrofit2.http.GET;
+import retrofit2.http.Path;
+
+public interface TrendingService {
+
+    /**
+     * Get the daily or weekly trending items
+     *
+     * @see <a href="https://developers.themoviedb.org/3/trending/get-trending">Documentation</a>
+     */
+    @GET("trending/{media_type}/{time_window}")
+    Call<TrendingResultsPage> trending(
+        @Path("media_type") String mediaType,
+        @Path("time_window") String timeWindow
+    );
+}

src/test/java/com/uwetrottmann/tmdb2/assertions/TrendingAssertions.java

@@ -0,0 +1,44 @@
+package com.uwetrottmann.tmdb2.assertions;
+
+import com.uwetrottmann.tmdb2.entities.BaseMovie;
+import com.uwetrottmann.tmdb2.entities.BasePerson;
+import com.uwetrottmann.tmdb2.entities.BaseTvShow;
+import com.uwetrottmann.tmdb2.entities.Trending;
+import com.uwetrottmann.tmdb2.entities.TrendingResultsPage;
+
+import static com.uwetrottmann.tmdb2.assertions.GenericAssertions.assertBaseResultsPage;
+import static com.uwetrottmann.tmdb2.assertions.MovieAssertions.assertBaseMovie;
+import static com.uwetrottmann.tmdb2.assertions.PersonAssertions.assertBasePerson;
+import static com.uwetrottmann.tmdb2.assertions.TvAssertions.assertBaseTvShow;
+import static org.assertj.core.api.Assertions.assertThat;
+import org.junit.Assert;
+
+public class TrendingAssertions {
+    public static void assertTrending(Trending trending) {
+        assertThat(trending).isNotNull();
+        switch (trending.media_type) {
+            case MOVIE:
+                BaseMovie movie = trending.movie;
+                assertBaseMovie(movie);
+                break;
+            case TV:
+                BaseTvShow tv = trending.tvShow;
+                assertBaseTvShow(tv);
+                break;
+            case PERSON:
+                BasePerson person = trending.person;
+                assertBasePerson(person);
+                break;
+            default:
+                Assert.fail("Unknown Media type");
+
+        }
+    }
+
+    public static void assertTrendingResultsPage(TrendingResultsPage trendingResultsPage) {
+        assertBaseResultsPage(trendingResultsPage);
+        for (Trending trending : trendingResultsPage.results) {
+            assertTrending(trending);
+        }
+    }
+}

src/test/java/com/uwetrottmann/tmdb2/services/TrendingServiceTest.java

@@ -0,0 +1,24 @@
+package com.uwetrottmann.tmdb2.services;
+
+import static com.uwetrottmann.tmdb2.assertions.TrendingAssertions.assertTrendingResultsPage;
+
+import java.io.IOException;
+
+import org.junit.Test;
+
+import com.uwetrottmann.tmdb2.BaseTestCase;
+import com.uwetrottmann.tmdb2.entities.TrendingResultsPage;
+
+import retrofit2.Call;
+
+public class TrendingServiceTest extends BaseTestCase {
+
+    @Test
+    public void test_trending() throws IOException {
+        Call<TrendingResultsPage> call = getUnauthenticatedInstance().trendingService().trending("all", "week");
+
+		TrendingResultsPage trendingResultsPage = call.execute().body();
+
+        assertTrendingResultsPage(trendingResultsPage);
+    }
+}