feat(poll): add update poll endpoint

- Add UpdatePollResponse class
- Add UpdatePollRequestData with UpdatePollRequest builder class
- Add update() static factory method
- Add PUT /polls service method
- Add unit tests for update poll and close poll functionality

Author: GwFreak01

src/main/java/io/getstream/chat/java/models/Poll.java

@@ -290,6 +290,83 @@ protected Call<GetPollResponse> generateCall(Client client) throws StreamExcepti
     }
   }
 
+  /** Response for updating a poll. */
+  @Data
+  @NoArgsConstructor
+  @EqualsAndHashCode(callSuper = true)
+  public static class UpdatePollResponse extends StreamResponseObject {
+    @NotNull
+    @JsonProperty("poll")
+    private Poll poll;
+  }
+
+  /** Request data for updating a poll. */
+  @Builder(
+      builderClassName = "UpdatePollRequest",
+      builderMethodName = "",
+      buildMethodName = "internalBuild")
+  @Getter
+  @EqualsAndHashCode
+  public static class UpdatePollRequestData {
+    @Nullable
+    @JsonProperty("id")
+    private String id;
+
+    @Nullable
+    @JsonProperty("name")
+    private String name;
+
+    @Nullable
+    @JsonProperty("description")
+    private String description;
+
+    @Nullable
+    @JsonProperty("voting_visibility")
+    private VotingVisibility votingVisibility;
+
+    @Nullable
+    @JsonProperty("enforce_unique_vote")
+    private Boolean enforceUniqueVote;
+
+    @Nullable
+    @JsonProperty("max_votes_allowed")
+    private Integer maxVotesAllowed;
+
+    @Nullable
+    @JsonProperty("allow_user_suggested_options")
+    private Boolean allowUserSuggestedOptions;
+
+    @Nullable
+    @JsonProperty("allow_answers")
+    private Boolean allowAnswers;
+
+    @Nullable
+    @JsonProperty("is_closed")
+    private Boolean isClosed;
+
+    @Singular
+    @Nullable
+    @JsonProperty("options")
+    private List<PollOptionRequestObject> options;
+
+    @Nullable
+    @JsonProperty("user_id")
+    private String userId;
+
+    @Nullable
+    @JsonProperty("user")
+    private UserRequestObject user;
+
+    public static class UpdatePollRequest extends StreamRequest<UpdatePollResponse> {
+      public UpdatePollRequest() {}
+
+      @Override
+      protected Call<UpdatePollResponse> generateCall(Client client) throws StreamException {
+        return client.create(PollService.class).update(this.internalBuild());
+      }
+    }
+  }
+
   /** Request data for creating a poll. */
   @Builder(
       builderClassName = "CreatePollRequest",
@@ -373,4 +450,14 @@ public static CreatePollRequest create() {
   public static GetPollRequest get(@NotNull String pollId) {
     return new GetPollRequest(pollId);
   }
+
+  /**
+   * Updates a poll (full update).
+   *
+   * @return the created request
+   */
+  @NotNull
+  public static UpdatePollRequestData.UpdatePollRequest update() {
+    return new UpdatePollRequestData.UpdatePollRequest();
+  }
 }

src/main/java/io/getstream/chat/java/services/PollService.java

@@ -3,12 +3,15 @@
 import io.getstream.chat.java.models.Poll.CreatePollRequestData;
 import io.getstream.chat.java.models.Poll.CreatePollResponse;
 import io.getstream.chat.java.models.Poll.GetPollResponse;
+import io.getstream.chat.java.models.Poll.UpdatePollRequestData;
+import io.getstream.chat.java.models.Poll.UpdatePollResponse;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import retrofit2.Call;
 import retrofit2.http.Body;
 import retrofit2.http.GET;
 import retrofit2.http.POST;
+import retrofit2.http.PUT;
 import retrofit2.http.Path;
 import retrofit2.http.Query;
 
@@ -34,4 +37,13 @@ public interface PollService {
   @GET("polls/{poll_id}")
   Call<GetPollResponse> get(
       @NotNull @Path("poll_id") String pollId, @Nullable @Query("user_id") String userId);
+
+  /**
+   * Updates a poll (full update).
+   *
+   * @param request The poll update request data
+   * @return A response with the updated poll
+   */
+  @PUT("polls")
+  Call<UpdatePollResponse> update(@NotNull @Body UpdatePollRequestData request);
 }

src/test/java/io/getstream/chat/java/PollTest.java

@@ -4,6 +4,7 @@
 import io.getstream.chat.java.models.Poll.CreatePollResponse;
 import io.getstream.chat.java.models.Poll.GetPollResponse;
 import io.getstream.chat.java.models.Poll.PollOptionRequestObject;
+import io.getstream.chat.java.models.Poll.UpdatePollResponse;
 import io.getstream.chat.java.models.Poll.VotingVisibility;
 import java.util.UUID;
 import org.junit.jupiter.api.Assertions;
@@ -136,4 +137,68 @@ void whenGettingPollWithUserId_thenNoException() {
 
     Assertions.assertNotNull(getResponse.getPoll());
   }
+
+  @DisplayName("Can update a poll")
+  @Test
+  void whenUpdatingPoll_thenNoException() {
+    // Create a poll first
+    CreatePollResponse createResponse =
+        Assertions.assertDoesNotThrow(
+            () ->
+                Poll.create()
+                    .name("Original Name")
+                    .userId(testUserRequestObject.getId())
+                    .option(PollOptionRequestObject.builder().text("Option 1").build())
+                    .request());
+
+    String pollId = createResponse.getPoll().getId();
+
+    // Update the poll
+    String newName = "Updated Name " + UUID.randomUUID();
+    UpdatePollResponse updateResponse =
+        Assertions.assertDoesNotThrow(
+            () ->
+                Poll.update()
+                    .id(pollId)
+                    .name(newName)
+                    .description("Updated description")
+                    .userId(testUserRequestObject.getId())
+                    .option(PollOptionRequestObject.builder().text("New Option 1").build())
+                    .option(PollOptionRequestObject.builder().text("New Option 2").build())
+                    .request());
+
+    Assertions.assertNotNull(updateResponse);
+    Assertions.assertEquals(newName, updateResponse.getPoll().getName());
+    Assertions.assertEquals("Updated description", updateResponse.getPoll().getDescription());
+  }
+
+  @DisplayName("Can close a poll via update")
+  @Test
+  void whenClosingPoll_thenNoException() {
+    // Create a poll first
+    CreatePollResponse createResponse =
+        Assertions.assertDoesNotThrow(
+            () ->
+                Poll.create()
+                    .name("Poll to close " + UUID.randomUUID())
+                    .userId(testUserRequestObject.getId())
+                    .option(PollOptionRequestObject.builder().text("A").build())
+                    .request());
+
+    String pollId = createResponse.getPoll().getId();
+
+    // Close the poll
+    UpdatePollResponse updateResponse =
+        Assertions.assertDoesNotThrow(
+            () ->
+                Poll.update()
+                    .id(pollId)
+                    .name("Poll to close")
+                    .isClosed(true)
+                    .userId(testUserRequestObject.getId())
+                    .request());
+
+    Assertions.assertNotNull(updateResponse);
+    Assertions.assertTrue(updateResponse.getPoll().getIsClosed());
+  }
 }