Simplified some code

README.md

@@ -3,10 +3,7 @@
 
 ## Getting Started
 So you wanna make custom voices, huh? Well you've come to the right place.
-
-### Note: This repo is undergoing an upgrade to v2.0
-If any of the documentation is out of place or issues occur, please submit a PR or create an issue.
-I downgraded the repo from JDK 17 to JDK 11 as well.
+This library should cover all the ElevenLabs API endpoints as of 11/15/23.
 
 ### Installation
 **Maven**
@@ -16,12 +13,9 @@ To add `elevenlabs-api` to your Maven project, use:
 <dependency>
     <groupId>net.andrewcpu</groupId>
     <artifactId>elevenlabs-api</artifactId>
-    <version>2.7</version>
+    <version>2.7.2</version>
 </dependency>
 ```
-The most up-to date package information can be found on the [Packages tab](https://github.com/AndrewCPU/elevenlabs-api/packages/)
-
-
 **JAR**
 
 Compiled JARs are available via the [Releases tab](https://github.com/AndrewCPU/elevenlabs-api/releases)
@@ -32,6 +26,9 @@ To access your ElevenLabs API key, head to the [official website](https://eleven
 To set up your ElevenLabs API key, you must register it with the ElevenLabsAPI Java API like below:
 ```java
 ElevenLabs.setApiKey("YOUR_API_KEY_HERE");
+
+
+ElevenLabs.setDefaultModel("eleven_monolingual_v1"); // Optional, defaults to: "eleven_monolingual_v1"
 ```
 *For any public repository security, you should store your API key in an environment variable, or external from your source code.*
 
@@ -420,6 +417,11 @@ If you like what you see, give it a star! :)
 
 - - -
 
+## Todo
+I will probably rework the 2 new builders I added when I added projects support. Their usage should be more clear, though the documentation covers their use cases I believe.
+
+- - - 
+
 #### Unit Testing
 Unit tests have been created, these endpoints are destructive and not included in the testing:
 * deleteHistoryItem - WONT TEST

pom.xml

@@ -60,7 +60,7 @@
 
     <groupId>net.andrewcpu</groupId>
     <artifactId>elevenlabs-api</artifactId>
-    <version>2.7</version>
+    <version>2.7.6-SNAPSHOT</version>
 
     <properties>
         <maven.compiler.source>11</maven.compiler.source>
@@ -80,17 +80,17 @@
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>
-            <version>2.13.4.1</version>
+            <version>2.15.3</version>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-annotations</artifactId>
-            <version>2.13.4</version>
+            <version>2.15.3</version>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-core</artifactId>
-            <version>2.13.4</version>
+            <version>2.15.3</version>
         </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>
@@ -194,7 +194,6 @@
                     </execution>
                 </executions>
             </plugin>
-
         </plugins>
     </build>
 </project>

src/main/java/net/andrewcpu/elevenlabs/ElevenLabs.java

@@ -1,5 +1,6 @@
 package net.andrewcpu.elevenlabs;
 
+import com.fasterxml.jackson.annotation.JsonIgnore;
 import net.andrewcpu.elevenlabs.api.impl.*;
 
 public class ElevenLabs {
@@ -17,6 +18,15 @@ public class ElevenLabs {
 	public static String getApiKey() {
 		return API_KEY;
 	}
+	private static String defaultModel = "eleven_monolingual_v1";
+
+	public static String getDefaultModel() {
+		return defaultModel;
+	}
+
+	public static void setDefaultModel(String defaultModel) {
+		ElevenLabs.defaultModel = defaultModel;
+	}
 
 	public static void setApiKey(String apiKey) {
 		API_KEY = apiKey;

src/main/java/net/andrewcpu/elevenlabs/model/history/HistoryItem.java

@@ -4,6 +4,7 @@ import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import net.andrewcpu.elevenlabs.ElevenLabs;
 import net.andrewcpu.elevenlabs.model.ElevenModel;
+import net.andrewcpu.elevenlabs.util.ElevenNetworkUtil;
 
 import java.io.File;
 import java.util.Map;
@@ -131,6 +132,10 @@ public class HistoryItem extends ElevenModel {
 		return ElevenLabs.getHistoryAPI().getHistoryItemAudio(historyItemId);
 	}
 
+	public String getDownloadUrl() {
+		return ElevenNetworkUtil.getHistoryItemUrl(historyItemId);
+	}
+
 	@JsonIgnore
 	@Override
 	public String toString() {

src/main/java/net/andrewcpu/elevenlabs/model/voice/Voice.java

@@ -167,28 +167,28 @@ public class Voice extends ElevenModel {
 		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeech(voiceId,text, model, outputFormat,StreamLatencyOptimization.getDefault(), settings);
 	}
 	public File generate(String text, VoiceSettings settings, GeneratedAudioOutputFormat outputFormat) {
-		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeech(voiceId, text, "eleven_monolingual_v1", outputFormat,StreamLatencyOptimization.getDefault(), settings);
+		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeech(voiceId, text, ElevenLabs.getDefaultModel(), outputFormat,StreamLatencyOptimization.getDefault(), settings);
 	}
 	public File generate(String text, VoiceSettings settings, StreamLatencyOptimization streamLatencyOptimization) {
-		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeech(voiceId, text, "eleven_monolingual_v1", GeneratedAudioOutputFormat.getDefault(),streamLatencyOptimization, settings);
+		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeech(voiceId, text, ElevenLabs.getDefaultModel(), GeneratedAudioOutputFormat.getDefault(),streamLatencyOptimization, settings);
 	}
 
 	public File generate(String text, VoiceSettings settings, GeneratedAudioOutputFormat outputFormat, StreamLatencyOptimization streamLatencyOptimization) {
-		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeech(voiceId, text, "eleven_monolingual_v1", outputFormat,streamLatencyOptimization, settings);
+		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeech(voiceId, text, ElevenLabs.getDefaultModel(), outputFormat,streamLatencyOptimization, settings);
 	}
 	public File generate(String text, GeneratedAudioOutputFormat outputFormat, StreamLatencyOptimization streamLatencyOptimization) {
-		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeech(voiceId, text, "eleven_monolingual_v1", outputFormat,streamLatencyOptimization, settings);
+		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeech(voiceId, text, ElevenLabs.getDefaultModel(), outputFormat,streamLatencyOptimization, settings);
 	}
 	public File generate(String text, StreamLatencyOptimization streamLatencyOptimization) {
-		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeech(voiceId, text, "eleven_monolingual_v1", GeneratedAudioOutputFormat.getDefault(), streamLatencyOptimization, settings);
+		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeech(voiceId, text, ElevenLabs.getDefaultModel(), GeneratedAudioOutputFormat.getDefault(), streamLatencyOptimization, settings);
 	}
 
 	public File generate(String text, VoiceSettings settings)  {
-		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeech(voiceId, text, "eleven_monolingual_v1", settings);
+		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeech(voiceId, text, ElevenLabs.getDefaultModel(), settings);
 	}
 
 	public File generate(String text) {
-		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeech(voiceId, text, "eleven_monolingual_v1", settings);
+		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeech(voiceId, text, ElevenLabs.getDefaultModel(), settings);
 	}
 
 
@@ -202,11 +202,11 @@ public class Voice extends ElevenModel {
 	}
 
 	public InputStream generateStream(String text, VoiceSettings settings)  {
-		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeechStreamed(voiceId, text, "eleven_monolingual_v1", settings);
+		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeechStreamed(voiceId, text, ElevenLabs.getDefaultModel(), settings);
 	}
 
 	public InputStream generateStream(String text) {
-		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeechStreamed(voiceId, text, "eleven_monolingual_v1", settings);
+		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeechStreamed(voiceId, text, ElevenLabs.getDefaultModel(), settings);
 	}
 
 	public InputStream generateStream(String text, String model, GeneratedAudioOutputFormat generatedAudioOutputFormat, StreamLatencyOptimization streamLatencyOptimization) {
@@ -218,11 +218,11 @@ public class Voice extends ElevenModel {
 	}
 
 	public InputStream generateStream(String text, VoiceSettings settings,  GeneratedAudioOutputFormat generatedAudioOutputFormat, StreamLatencyOptimization streamLatencyOptimization)  {
-		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeechStreamed(voiceId, text, "eleven_monolingual_v1", generatedAudioOutputFormat, streamLatencyOptimization, settings);
+		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeechStreamed(voiceId, text, ElevenLabs.getDefaultModel(), generatedAudioOutputFormat, streamLatencyOptimization, settings);
 	}
 
 	public InputStream generateStream(String text,  GeneratedAudioOutputFormat generatedAudioOutputFormat, StreamLatencyOptimization streamLatencyOptimization) {
-		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeechStreamed(voiceId, text, "eleven_monolingual_v1", generatedAudioOutputFormat, streamLatencyOptimization, settings);
+		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeechStreamed(voiceId, text, ElevenLabs.getDefaultModel(), generatedAudioOutputFormat, streamLatencyOptimization, settings);
 	}
 
 	public InputStream generateStream(String text, String model, StreamLatencyOptimization streamLatencyOptimization) {
@@ -234,11 +234,11 @@ public class Voice extends ElevenModel {
 	}
 
 	public InputStream generateStream(String text, VoiceSettings settings, StreamLatencyOptimization streamLatencyOptimization)  {
-		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeechStreamed(voiceId, text, "eleven_monolingual_v1", GeneratedAudioOutputFormat.getDefault(), streamLatencyOptimization, settings);
+		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeechStreamed(voiceId, text, ElevenLabs.getDefaultModel(), GeneratedAudioOutputFormat.getDefault(), streamLatencyOptimization, settings);
 	}
 
 	public InputStream generateStream(String text, StreamLatencyOptimization streamLatencyOptimization) {
-		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeechStreamed(voiceId, text, "eleven_monolingual_v1", GeneratedAudioOutputFormat.getDefault(), streamLatencyOptimization, settings);
+		return ElevenLabs.getTextToSpeechAPI().generateTextToSpeechStreamed(voiceId, text, ElevenLabs.getDefaultModel(), GeneratedAudioOutputFormat.getDefault(), streamLatencyOptimization, settings);
 	}
 
 	public File speechToSpeech(File audioFile, StreamLatencyOptimization latencyOptimization, String modelId, VoiceSettings voiceSettings) {

src/main/java/net/andrewcpu/elevenlabs/requests/DeleteRequest.java

@@ -6,4 +6,9 @@ public abstract class DeleteRequest<T> extends ElevenLabsRequest<T> {
 	public DeleteRequest(String endpoint, Class<T> clazz) {
 		super(HttpRequestType.DELETE, endpoint, clazz);
 	}
+
+	@Override
+	public Object getPayload() {
+		return null;
+	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/ElevenLabsRequest.java

@@ -23,6 +23,8 @@ public abstract class ElevenLabsRequest<T> {
 	}
 
 	public String getEndpoint() {
+		Map<String, String> params = getQueryParameters();
+		if(params.isEmpty()) return endpoint;
 		return endpoint + "?" + buildQueryParameters(getQueryParameters());
 	}
 
@@ -35,6 +37,4 @@ public abstract class ElevenLabsRequest<T> {
 	}
 
 	public abstract Object getPayload();
-
-
 }

src/main/java/net/andrewcpu/elevenlabs/requests/GetRequest.java

@@ -6,4 +6,9 @@ public abstract class GetRequest<T> extends ElevenLabsRequest<T> {
 	public GetRequest(String endpoint, Class<T> clazz) {
 		super(HttpRequestType.GET, endpoint, clazz);
 	}
+
+	@Override
+	public Object getPayload() {
+		return null;
+	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/PostMultipartRequest.java

@@ -0,0 +1,18 @@
+package net.andrewcpu.elevenlabs.requests;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public abstract class PostMultipartRequest<T> extends PostRequest<T> {
+	public PostMultipartRequest(String endpoint, Class<T> clazz) {
+		super(endpoint, clazz);
+	}
+
+
+	public abstract Map<String, Object> getMultipartParts(Map<String, Object> map);
+
+	@Override
+	public Object getPayload() {
+		return getMultipartParts(new HashMap<>());
+	}
+}

src/main/java/net/andrewcpu/elevenlabs/requests/PostRequest.java

@@ -6,4 +6,9 @@ public abstract class PostRequest<T> extends ElevenLabsRequest<T> {
 	public PostRequest(String endpoint, Class<T> clazz) {
 		super(HttpRequestType.POST, endpoint, clazz);
 	}
+
+	@Override
+	public Object getPayload() {
+		return null;
+	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/audionative/PostCreateAudioNativeProjectRequest.java

@@ -2,12 +2,13 @@ package net.andrewcpu.elevenlabs.requests.audionative;
 
 import net.andrewcpu.elevenlabs.model.request.CreateAudioNativeProjectRequest;
 import net.andrewcpu.elevenlabs.model.response.CreateAudioEnabledProjectModelResponse;
+import net.andrewcpu.elevenlabs.requests.PostMultipartRequest;
 import net.andrewcpu.elevenlabs.requests.PostRequest;
 
 import java.util.HashMap;
 import java.util.Map;
 
-public class PostCreateAudioNativeProjectRequest extends PostRequest<CreateAudioEnabledProjectModelResponse> {
+public class PostCreateAudioNativeProjectRequest extends PostMultipartRequest<CreateAudioEnabledProjectModelResponse> {
 	private final CreateAudioNativeProjectRequest request;
 	public PostCreateAudioNativeProjectRequest(CreateAudioNativeProjectRequest request) {
 		super("v1/audio-native", CreateAudioEnabledProjectModelResponse.class);
@@ -15,8 +16,7 @@ public class PostCreateAudioNativeProjectRequest extends PostRequest<CreateAudio
 	}
 
 	@Override
-	public Object getPayload() {
-		Map<String, Object> payload = new HashMap<>();
+	public Map<String, Object> getMultipartParts(Map<String, Object> payload) {
 		payload.put("name", request.getName());
 		payload.put("image", request.getImage());
 		payload.put("author", request.getAuthor());

src/main/java/net/andrewcpu/elevenlabs/requests/history/DeleteHistoryItemRequest.java

@@ -6,9 +6,4 @@ public class DeleteHistoryItemRequest extends DeleteRequest<String> {
 	public DeleteHistoryItemRequest(String historyItemId) {
 		super("v1/history/" + historyItemId, String.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/history/GetHistoryItemAudioRequest.java

@@ -8,9 +8,4 @@ public class GetHistoryItemAudioRequest extends GetRequest<File> {
 	public GetHistoryItemAudioRequest(String historyItemId) {
 		super("v1/history/" + historyItemId + "/audio", File.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/history/GetHistoryItemByIdRequest.java

@@ -7,9 +7,4 @@ public class GetHistoryItemByIdRequest extends GetRequest<HistoryItem> {
 	public GetHistoryItemByIdRequest(String historyId) {
 		super("v1/history/" + historyId, HistoryItem.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/history/GetHistoryRequest.java

@@ -7,9 +7,4 @@ public class GetHistoryRequest extends GetRequest<History> {
 	public GetHistoryRequest() {
 		super("v1/history", History.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/models/GetModelsRequest.java

@@ -7,9 +7,4 @@ public class GetModelsRequest extends GetRequest<GenerationTypeModel[]> {
 	public GetModelsRequest() {
 		super("v1/models", GenerationTypeModel[].class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/projects/DeleteChapterByIdRequest.java

@@ -3,13 +3,7 @@ package net.andrewcpu.elevenlabs.requests.projects;
 import net.andrewcpu.elevenlabs.requests.DeleteRequest;
 
 public class DeleteChapterByIdRequest extends DeleteRequest<String> {
-
 	public DeleteChapterByIdRequest(String projectId, String chapterId) {
 		super("v1/projects/" + projectId + "/chapters/" + chapterId, String.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/projects/DeleteProjectByIdRequest.java

@@ -6,9 +6,4 @@ public class DeleteProjectByIdRequest extends DeleteRequest<String> {
 	public DeleteProjectByIdRequest(String projectId) {
 		super("v1/projects/" + projectId, String.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/projects/GetChapterByIdRequest.java

@@ -7,9 +7,4 @@ public class GetChapterByIdRequest extends GetRequest<Chapter> {
 	public GetChapterByIdRequest(String projectId, String chapterId) {
 		super("v1/projects/" + projectId + "/chapters/" + chapterId, Chapter.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/projects/GetChapterSnapshotsRequest.java

@@ -7,9 +7,4 @@ public class GetChapterSnapshotsRequest extends GetRequest<ChapterSnapshotsModel
 	public GetChapterSnapshotsRequest(String projectId, String chapterId) {
 		super("v1/projects/" + projectId + "/chapters/" + chapterId + "/snapshots", ChapterSnapshotsModelResponse.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/projects/GetProjectByIdRequest.java

@@ -7,9 +7,4 @@ public class GetProjectByIdRequest extends GetRequest<Project> {
 	public GetProjectByIdRequest(String projectId) {
 		super("v1/projects/" + projectId, Project.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/projects/GetProjectChaptersRequest.java

@@ -7,9 +7,4 @@ public class GetProjectChaptersRequest extends GetRequest<ChaptersModelResponse>
 	public GetProjectChaptersRequest(String projectId) {
 		super("v1/projects/" + projectId + "/chapters", ChaptersModelResponse.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/projects/GetProjectSnapshotsRequest.java

@@ -7,9 +7,4 @@ public class GetProjectSnapshotsRequest extends GetRequest<ProjectSnapshotsModel
 	public GetProjectSnapshotsRequest(String projectId) {
 		super("v1/projects/" + projectId + "/snapshots", ProjectSnapshotsModelResponse.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/projects/GetProjectsRequest.java

@@ -7,9 +7,4 @@ public class GetProjectsRequest extends GetRequest<ProjectsModelResponse> {
 	public GetProjectsRequest() {
 		super("v1/projects", ProjectsModelResponse.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/projects/PostAddProjectRequest.java

@@ -2,12 +2,13 @@ package net.andrewcpu.elevenlabs.requests.projects;
 
 import net.andrewcpu.elevenlabs.model.request.AddProjectRequest;
 import net.andrewcpu.elevenlabs.model.response.ProjectModelResponse;
+import net.andrewcpu.elevenlabs.requests.PostMultipartRequest;
 import net.andrewcpu.elevenlabs.requests.PostRequest;
 
 import java.util.HashMap;
 import java.util.Map;
 
-public class PostAddProjectRequest extends PostRequest<ProjectModelResponse> {
+public class PostAddProjectRequest extends PostMultipartRequest<ProjectModelResponse> {
 	private final AddProjectRequest request;
 	public PostAddProjectRequest(AddProjectRequest request) {
 		super("v1/projects/add", ProjectModelResponse.class);
@@ -15,8 +16,7 @@ public class PostAddProjectRequest extends PostRequest<ProjectModelResponse> {
 	}
 
 	@Override
-	public Object getPayload() {
-		Map<String, Object> payload = new HashMap<>();
+	public Map<String, Object> getMultipartParts(Map<String, Object> payload) {
 		payload.put("name",request.getName());
 		payload.put("from_url", request.getFromUrl());
 		payload.put("from_document", request.getFromDocument());

src/main/java/net/andrewcpu/elevenlabs/requests/projects/PostConvertChapterRequest.java

@@ -6,9 +6,4 @@ public class PostConvertChapterRequest extends PostRequest<String> {
 	public PostConvertChapterRequest(String projectId, String chapterId) {
 		super("v1/projects/" + projectId + "/chapters/" + chapterId + "/convert", String.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/projects/PostConvertProjectRequest.java

@@ -6,9 +6,4 @@ public class PostConvertProjectRequest extends PostRequest<String> {
 	public PostConvertProjectRequest(String projectId) {
 		super("v1/projects/" + projectId + "/convert", String.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/projects/PostStreamChapterSnapshotAudioRequest.java

@@ -8,9 +8,4 @@ public class PostStreamChapterSnapshotAudioRequest extends PostRequest<InputStre
 	public PostStreamChapterSnapshotAudioRequest(String projectId, String chapterId, String chapterSnapshotId) {
 		super("v1/projects/" + projectId + "/chapters/" + chapterId + "/snapshots/" + chapterSnapshotId + "/stream", InputStream.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/projects/PostStreamProjectSnapshotAudioRequest.java

@@ -8,9 +8,4 @@ public class PostStreamProjectSnapshotAudioRequest extends PostRequest<InputStre
 	public PostStreamProjectSnapshotAudioRequest(String projectId, String snapshotId) {
 		super("v1/projects/" + projectId + "/snapshots/" + snapshotId + "/stream", InputStream.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/samples/DeleteSampleRequest.java

@@ -6,9 +6,4 @@ public class DeleteSampleRequest extends DeleteRequest<String> {
 	public DeleteSampleRequest(String voiceId, String sampleId) {
 		super("v1/voices/" + voiceId + "/samples/" + sampleId, String.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/samples/GetSampleRequest.java

@@ -8,9 +8,4 @@ public class GetSampleRequest extends GetRequest<File> {
 	public GetSampleRequest(String voiceId, String sampleId) {
 		super("v1/voices/" + voiceId + "/samples/" + sampleId + "/audio", File.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/sts/PostSpeechToSpeechRequest.java

@@ -1,5 +1,7 @@
 package net.andrewcpu.elevenlabs.requests.sts;
 
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import net.andrewcpu.elevenlabs.enums.StreamLatencyOptimization;
 import net.andrewcpu.elevenlabs.model.voice.VoiceSettings;
 import net.andrewcpu.elevenlabs.requests.PostRequest;
@@ -31,9 +33,15 @@ public class PostSpeechToSpeechRequest extends PostRequest<File> {
 	@Override
 	public Object getPayload() {
 		Map<String, Object> body = new HashMap<>();
+		String voiceSettingsString;
+		try {
+			voiceSettingsString = new ObjectMapper().writeValueAsString(voiceSettings);
+		} catch (JsonProcessingException e) {
+			throw new RuntimeException(e);
+		}
 		body.put("audio", audio);
 		body.put("model_id", modelId);
-		body.put("voice_settings", voiceSettings);
+		body.put("voice_settings", voiceSettingsString);
 		return body;
 	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/sts/PostSpeechToSpeechStreamedRequest.java

@@ -1,5 +1,7 @@
 package net.andrewcpu.elevenlabs.requests.sts;
 
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import net.andrewcpu.elevenlabs.enums.StreamLatencyOptimization;
 import net.andrewcpu.elevenlabs.model.voice.VoiceSettings;
 import net.andrewcpu.elevenlabs.requests.PostRequest;
@@ -32,9 +34,15 @@ public class PostSpeechToSpeechStreamedRequest extends PostRequest<InputStream>
 	@Override
 	public Object getPayload() {
 		Map<String, Object> body = new HashMap<>();
+		String voiceSettingsString;
+		try {
+			voiceSettingsString = new ObjectMapper().writeValueAsString(voiceSettings);
+		} catch (JsonProcessingException e) {
+			throw new RuntimeException(e);
+		}
 		body.put("audio", audio);
 		body.put("model_id", modelId);
-		body.put("voice_settings", voiceSettings);
+		body.put("voice_settings", voiceSettingsString);
 		return body;
 	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/tts/PostTextToSpeechRequest.java

@@ -52,7 +52,7 @@ public class PostTextToSpeechRequest extends PostRequest<File> {
 	public Map<String, String> getQueryParameters() {
 		Map<String, String> map = new HashMap<>();
 		map.put("optimize_streaming_latency", String.valueOf(streamLatencyOptimization.getValue()));
-		map.put("output_format", outputFormat.name());
+		map.put("output_format", outputFormat.name().toLowerCase());
 		return map;
 	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/tts/PostTextToSpeechStreamedRequest.java

@@ -46,7 +46,7 @@ public class PostTextToSpeechStreamedRequest extends PostRequest<InputStream> {
 	public Map<String, String> getQueryParameters() {
 		Map<String, String> map = new HashMap<>();
 		map.put("optimize_streaming_latency", String.valueOf(streamLatencyOptimization.getValue()));
-		map.put("output_format", outputFormat.name());
+		map.put("output_format", outputFormat.name().toLowerCase());
 		return map;
 	}
 

src/main/java/net/andrewcpu/elevenlabs/requests/user/GetSubscriptionRequest.java

@@ -8,9 +8,4 @@ public class GetSubscriptionRequest extends GetRequest<Subscription> {
 	public GetSubscriptionRequest() {
 		super("v1/user/subscription", Subscription.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/user/GetUserRequest.java

@@ -7,9 +7,4 @@ public class GetUserRequest extends GetRequest<User> {
 	public GetUserRequest() {
 		super("v1/user", User.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/voices/DeleteVoiceRequest.java

@@ -6,9 +6,4 @@ public class DeleteVoiceRequest extends DeleteRequest<String> {
 	public DeleteVoiceRequest(String voiceId) {
 		super("v1/voices/" + voiceId, String.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/voices/GetDefaultVoiceSettingsRequest.java

@@ -7,9 +7,4 @@ public class GetDefaultVoiceSettingsRequest extends GetRequest<VoiceSettings> {
 	public GetDefaultVoiceSettingsRequest() {
 		super("v1/voices/settings/default", VoiceSettings.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/voices/GetVoiceRequest.java

@@ -12,15 +12,17 @@ public class GetVoiceRequest extends GetRequest<Voice> {
 		this(voiceId,  true);
 	}
 
+
+
 	public GetVoiceRequest(String voiceId, boolean withSettings) {
 		super( "v1/voices/" + voiceId, Voice.class);
 		this.withSettings = withSettings;
 	}
 
 	@Override
-	public Object getPayload() {
-		Map<String, Object> payload = new HashMap<>();
-		payload.put("with_settings", withSettings);
+	public Map<String, String> getQueryParameters() {
+		Map<String, String> payload = new HashMap<>();
+		payload.put("with_settings", String.valueOf(withSettings));
 		return payload;
 	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/voices/GetVoiceSettingsRequest.java

@@ -7,9 +7,4 @@ public class GetVoiceSettingsRequest extends GetRequest<VoiceSettings> {
 	public GetVoiceSettingsRequest(String voiceId) {
 		super("v1/voices/" + voiceId + "/settings", VoiceSettings.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/voices/GetVoicesRequest.java

@@ -7,9 +7,4 @@ public class GetVoicesRequest extends GetRequest<VoiceModelResponse> {
 	public GetVoicesRequest() {
 		super("v1/voices", VoiceModelResponse.class);
 	}
-
-	@Override
-	public Object getPayload() {
-		return null;
-	}
 }

src/main/java/net/andrewcpu/elevenlabs/requests/voices/PostAddVoiceRequest.java

@@ -1,13 +1,14 @@
 package net.andrewcpu.elevenlabs.requests.voices;
 
 import net.andrewcpu.elevenlabs.model.response.CreateVoiceResponse;
+import net.andrewcpu.elevenlabs.requests.PostMultipartRequest;
 import net.andrewcpu.elevenlabs.requests.PostRequest;
 
 import java.io.File;
 import java.util.HashMap;
 import java.util.Map;
 
-public class PostAddVoiceRequest extends PostRequest<CreateVoiceResponse> {
+public class PostAddVoiceRequest extends PostMultipartRequest<CreateVoiceResponse> {
 	private final String name;
 	private final File[] samples;
 	private final String description;
@@ -37,8 +38,7 @@ public class PostAddVoiceRequest extends PostRequest<CreateVoiceResponse> {
 	}
 
 	@Override
-	public Object getPayload() {
-		Map<String, Object> map = new HashMap<String, Object>();
+	public Map<String, Object> getMultipartParts(Map<String, Object> map) {
 		map.put("name", this.name);
 		map.put("files", this.samples);
 		map.put("description", this.description);

src/main/java/net/andrewcpu/elevenlabs/requests/voices/PostEditVoiceRequest.java

@@ -1,12 +1,13 @@
 package net.andrewcpu.elevenlabs.requests.voices;
 
+import net.andrewcpu.elevenlabs.requests.PostMultipartRequest;
 import net.andrewcpu.elevenlabs.requests.PostRequest;
 
 import java.io.File;
 import java.util.HashMap;
 import java.util.Map;
 
-public class PostEditVoiceRequest extends PostRequest<String> {
+public class PostEditVoiceRequest extends PostMultipartRequest<String> {
 	private final String name;
 	private final File[] samples;
 	private final String description;
@@ -36,8 +37,7 @@ public class PostEditVoiceRequest extends PostRequest<String> {
 	}
 
 	@Override
-	public Object getPayload() {
-		Map<String, Object> map = new HashMap<String, Object>();
+	public Map<String, Object> getMultipartParts(Map<String, Object> map) {
 		map.put("name", this.name);
 		map.put("files", this.samples);
 		map.put("description", this.description);

src/main/java/net/andrewcpu/elevenlabs/util/ElevenNetworkUtil.java

@@ -66,22 +66,10 @@ public class ElevenNetworkUtil {
 		}
 	}
 
-	private static List<NameValuePair> getParameters(Object payload) {
-		List<NameValuePair> parameters = new ArrayList<>();
-		if (payload instanceof Map<?, ?>) {
-			Map<?, ?> payloadMap = (Map<?, ?>) payload;
-			for (Map.Entry<?, ?> entry : payloadMap.entrySet()) {
-				parameters.add(new BasicNameValuePair(String.valueOf(entry.getKey()), String.valueOf(entry.getValue())));
-			}
-		}
-		return parameters;
-	}
-
-	private static HttpUriRequestBase handleNonBodyRequest(HttpRequestType requestType, Object payload, String path) {
-		List<NameValuePair> parameters = getParameters(payload);
+	private static HttpUriRequestBase handleNonBodyRequest(HttpRequestType requestType, String path) {
 		HttpUriRequestBase request = getRequest(requestType, path);
 		try {
-			request.setUri(new URIBuilder(path).addParameters(parameters).build());
+			request.setUri(new URIBuilder(path).build());
 		} catch (URISyntaxException e) {
 			throw new RuntimeException(e);
 		}
@@ -141,7 +129,7 @@ public class ElevenNetworkUtil {
 	public static HttpUriRequestBase getRequest(HttpRequestType method, String path, Object payload) throws JsonProcessingException {
 		HttpUriRequestBase request;
 		if (method == HttpRequestType.GET || method == HttpRequestType.DELETE) {
-			request = handleNonBodyRequest(method, payload, path);
+			request = handleNonBodyRequest(method, path);
 		} else {
 			request = handleBodyRequest(method, payload, path);
 		}
@@ -149,6 +137,10 @@ public class ElevenNetworkUtil {
 		return request;
 	}
 
+	public static String getHistoryItemUrl(String historyItemId) {
+		return BASE_URL + "v1/history/" + historyItemId + "/audio";
+	}
+
 	public static <T> T sendRequest(HttpRequestType method, String path, Object payload, Class<T> responseType) {
 		ObjectMapper objectMapper = new ObjectMapper();
 		path = BASE_URL + path;