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API.AI Java SDK allows using voice commands and integration with dialog scenarios defined for a particular agent in API.AI.
package ai.api;
import java.io.UnsupportedEncodingException;
/***********************************************************************************************************************
*
* API.AI Java SDK - client-side libraries for API.AI
* =================================================
*
* Copyright (C) 2015 by Speaktoit, Inc. (https://www.speaktoit.com)
* https://www.api.ai
*
* *********************************************************************************************************************
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*
***********************************************************************************************************************/
import java.net.Proxy;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.Map;
import ai.api.util.StringUtils;
/**
* AI service configuration
*/
public class AIConfiguration implements Cloneable {
private static final String SERVICE_PROD_URL = "https://api.api.ai/v1/";
protected static final String CURRENT_PROTOCOL_VERSION = "20150910";
protected static final String QUESTION_ENDPOINT = "query";
protected static final String USER_ENTITIES_ENDPOINT = "userEntities";
protected static final String CONTEXTS_ENDPOINT = "contexts";
private final String apiKey;
private final SupportedLanguages language;
private String serviceUrl;
/**
* Protocol version used for api queries. Can be changed if old protocol version required.
*
* See https://docs.api.ai/v20/docs/versioning for details
*/
private String protocolVersion;
private boolean writeSoundLog = false;
private Proxy proxy;
/**
* Create configuration with given client access token and language.
*
* See https://docs.api.ai/v20/docs/authentication for details
*
* @param clientAccessToken An agent unique key. Cannot be null
* @param language An agent language
*/
public AIConfiguration(final String clientAccessToken, final SupportedLanguages language) {
if (clientAccessToken == null) {
throw new IllegalArgumentException("clientAccessToken");
}
this.apiKey = clientAccessToken;
this.language = language != null ? language : SupportedLanguages.DEFAULT;
protocolVersion = CURRENT_PROTOCOL_VERSION;
serviceUrl = SERVICE_PROD_URL;
}
/**
* Create configuration with given client access token.
*
* See https://docs.api.ai/v20/docs/authentication for details
*
* @param clientAccessToken An agent unique key. Cannot be null
*/
public AIConfiguration(final String clientAccessToken) {
this(clientAccessToken, null);
}
/**
* Get client access key
*/
public String getApiKey() {
return apiKey;
}
/**
* Get client agent language
* @return Never null
*/
public String getLanguage() {
return language.languageTag;
}
/**
* Get api.ai agent language
* @return Never null
*/
public String getApiAiLanguage() {
return language.apiaiLanguage;
}
/**
* This flag is for testing purposes ONLY. Don't change it.
* @param writeSoundLog value, indicating recorded sound will be saved in storage (if possible)
*/
public void setWriteSoundLog(final boolean writeSoundLog) {
this.writeSoundLog = writeSoundLog;
}
/**
* This flag is for testing purposes ONLY. Don't use it in your code.
* @return value, indicating recorded sound will be saved in storage (if possible)
*/
public boolean isWriteSoundLog() {
return writeSoundLog;
}
/**
* Check list of supported protocol versions on the api.ai website.
* @return protocol version in YYYYMMDD format
*/
public String getProtocolVersion() {
return protocolVersion;
}
/**
* Set protocol version for API queries. Must be in YYYYMMDD format.
* This option for special cases only, should not be used in usual cases.
* @param protocolVersion Protocol version in YYYYMMDD format or empty string for the oldest version.
* Check list of supported protocol versions on the api.ai website.
*/
public void setProtocolVersion(final String protocolVersion) {
this.protocolVersion = protocolVersion;
}
/**
* Set API service url. Used primarily for test requests.
*/
public void setServiceUrl(final String serviceUrl) {
this.serviceUrl = serviceUrl;
}
/**
* Get connection proxy information. If null then direct connection would be used.
*/
public Proxy getProxy() {
return proxy;
}
/**
* Set connection proxy information.
* @param proxy If null then direct connection would be used.
*/
public void setProxy(final Proxy proxy) {
this.proxy = proxy;
}
/**
* Clone the configuration
*/
public AIConfiguration clone() {
try {
AIConfiguration result = (AIConfiguration)super.clone();
return result;
} catch (CloneNotSupportedException e) {
throw new RuntimeException(e);
}
}
String getQuestionUrl(final String sessionId) {
if (StringUtils.isEmpty(protocolVersion)) {
return String.format("%s%s?sessionId=%s", serviceUrl, QUESTION_ENDPOINT, sessionId);
} else {
return String.format("%s%s?v=%s&sessionId=%s", serviceUrl, QUESTION_ENDPOINT, protocolVersion, sessionId);
}
}
String getUserEntitiesEndpoint(final String sessionId) {
if (StringUtils.isEmpty(protocolVersion)) {
return String.format("%s%s?sessionId=%s", serviceUrl, USER_ENTITIES_ENDPOINT, sessionId);
} else {
return String.format("%s%s?v=%s&sessionId=%s", serviceUrl, USER_ENTITIES_ENDPOINT, protocolVersion, sessionId);
}
}
String getContextsUrl(final String sessionId) {
return getContextsUrl(sessionId, "");
}
String getContextsUrl(final String sessionId, final String suffix) {
StringBuilder result = new StringBuilder();
result.append(serviceUrl).append(CONTEXTS_ENDPOINT);
if (!StringUtils.isEmpty(suffix)) {
try {
result.append("/").append(URLEncoder.encode(suffix, StandardCharsets.UTF_8.name()));
} catch (UnsupportedEncodingException e) {
// This is unexpected due to encoding value is defined as constant string
throw new RuntimeException(e);
}
}
result.append("?");
if (!StringUtils.isEmpty(protocolVersion)) {
result.append("v=").append(protocolVersion).append("&");
}
result.append("sessionId=").append(sessionId);
return result.toString();
}
private static Map STRING_TO_LANGUAGE = new HashMap<>();
/**
* Currently supported languages
*/
public static enum SupportedLanguages {
English("en"),
EnglishUS("en-US", "en"),
EnglishGB("en-GB", "en"),
Russian("ru"),
German("de"),
Portuguese("pt"),
PortugueseBrazil("pt-BR"),
Spanish("es"),
French("fr"),
Italian("it"),
Japanese("ja"),
Korean("ko"),
ChineseChina("zh-CN"),
ChineseHongKong("zh-HK"),
ChineseTaiwan("zh-TW");
/**
* Default language value
*/
public static SupportedLanguages DEFAULT = SupportedLanguages.English;
private final String languageTag;
private final String apiaiLanguage;
SupportedLanguages(final String languageTag) {
this(languageTag, languageTag);
}
SupportedLanguages(final String languageTag, final String apiaiLanguage) {
assert languageTag != null;
assert apiaiLanguage != null;
this.languageTag = languageTag;
this.apiaiLanguage = apiaiLanguage;
SupportedLanguages retValue = STRING_TO_LANGUAGE.put(languageTag, this);
assert retValue == null : "languageTag duplicates";
}
public static SupportedLanguages fromLanguageTag(final String languageTag) {
SupportedLanguages result = STRING_TO_LANGUAGE.get(languageTag);
return result != null ? result : DEFAULT;
}
}
}