Remove runtime dependency on maven-artifact

This was primarily being used to check the Java version to handle < Java 7 in a different way for date formatting, but since Java 8 is the minimum version at this point it is no longer necessary. Also ends up removing the transitive dependency on commons lang which had minimal usage but replaced with an internal StringUtils equivalent.

api/pom.xml

@@ -92,11 +92,6 @@
             <artifactId>java-jwt</artifactId>
             <version>4.4.0</version>
         </dependency>
-        <dependency>
-            <groupId>org.apache.maven</groupId>
-            <artifactId>maven-artifact</artifactId>
-            <version>3.9.6</version>
-        </dependency>
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>

api/src/main/java/com/messagebird/MessageBirdServiceImpl.java

@@ -8,7 +8,6 @@
 import com.messagebird.exceptions.UnauthorizedException;
 import com.messagebird.objects.ErrorReport;
 import com.messagebird.objects.PagedPaging;
-import org.apache.maven.artifact.versioning.ComparableVersion;
 
 import java.io.File;
 import java.io.FileOutputStream;
@@ -62,7 +61,7 @@ public class MessageBirdServiceImpl implements MessageBirdService {
     private static final String[] PROTOCOL_LISTS = new String[]{"http://", "https://"};
     private static final List<String> PROTOCOLS = Arrays.asList(PROTOCOL_LISTS);
 
-    private static final ComparableVersion JAVA_VERSION = getJavaVersion();
+    private static final String JAVA_VERSION = getJavaVersion();
 
     // Indicates whether we've overridden HttpURLConnection's behaviour to
     // allow PATCH requests yet. Also see docs on allowPatchRequestsIfNeeded().
@@ -89,13 +88,9 @@ public MessageBirdServiceImpl(final String accessKey, final String serviceUrl) {
 
     }
 
-    private static ComparableVersion getJavaVersion() {
-        try {
-            String version = System.getProperty("java.version");
-            return new ComparableVersion(version);
-        } catch (IllegalArgumentException e) {
-            return new ComparableVersion("0.0");
-        }
+    private static String getJavaVersion() {
+        String version = System.getProperty("java.version");
+        return version != null ? version : "0.0";
     }
 
     private String determineUserAgentString() {
@@ -113,7 +108,7 @@ public MessageBirdServiceImpl(final String accessKey) {
 
     @Override
     public <R> R request(String request, Class<R> clazz)
-        throws UnauthorizedException, GeneralException, NotFoundException {
+            throws UnauthorizedException, GeneralException, NotFoundException {
         return getJsonData(request, null, "GET", clazz);
     }
 
@@ -142,7 +137,7 @@ public <R> R requestByID(String request, String id, Map<String, Object> params,
 
     @Override
     public <E> List<E> requestByIdAsList(String request, String id, Class<E> elementClass)
-        throws UnauthorizedException, GeneralException, NotFoundException {
+            throws UnauthorizedException, GeneralException, NotFoundException {
         String path = "";
         if (id != null) {
             path = "/" + id;
@@ -276,8 +271,8 @@ public <T, P> T getJsonData(final String request, final P payload, final String
 
                 // Prevents mismatched exception when clazz is null
                 return clazz == null
-                    ? null
-                    : this.readValue(mapper, body, clazz);
+                        ? null
+                        : this.readValue(mapper, body, clazz);
             } catch (IOException ioe) {
                 throw new GeneralException(ioe);
             }
@@ -290,8 +285,8 @@ public <T, P> T getJsonData(final String request, final P payload, final String
 
     // todo: need to refactor for duplicated code.
     public <P, E> List<E> getJsonDataAsList(final String request,
-        final P payload, final String requestType, final Map<String, String> headers, final Class<E> elementClass)
-        throws UnauthorizedException, GeneralException, NotFoundException {
+                                            final P payload, final String requestType, final Map<String, String> headers, final Class<E> elementClass)
+            throws UnauthorizedException, GeneralException, NotFoundException {
         if (request == null) {
             throw new IllegalArgumentException(REQUEST_VALUE_MUST_BE_SPECIFIED);
         }
@@ -327,12 +322,12 @@ public <P, E> List<E> getJsonDataAsList(final String request,
     }
 
     private <T> T readValue(ObjectMapper mapper, String content, Class<T> clazz)
-        throws JsonProcessingException {
+            throws JsonProcessingException {
         return mapper.readValue(content, clazz);
     }
 
     private <E> List<E> readValueAsList(ObjectMapper mapper, String content, final Class<E> elementClass)
-        throws JsonProcessingException {
+            throws JsonProcessingException {
         return mapper.readValue(content, mapper.getTypeFactory().constructCollectionType(List.class, elementClass));
     }
 
@@ -637,11 +632,7 @@ private void setAdditionalHeaders(HttpURLConnection connection, Map<String, Stri
     }
 
     private DateFormat getDateFormat() {
-        ComparableVersion java6 = new ComparableVersion("1.6");
-        if (JAVA_VERSION.compareTo(java6) > 0) {
-            return new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssXXX");
-        }
-        return new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZZZ");
+        return new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssXXX");
     }
 
     /**
@@ -798,4 +789,4 @@ private String getPathVariables(final Map<String, Object> map) {
         }
         return bpath.toString();
     }
-}
+}

api/src/main/java/com/messagebird/common/StringUtils.java

@@ -0,0 +1,12 @@
+package com.messagebird.common;
+
+public class StringUtils {
+
+    private StringUtils() {
+        // static utility
+    }
+
+    public static boolean isBlank(String text) {
+        return text == null || text.trim().isEmpty();
+    }
+}

api/src/main/java/com/messagebird/objects/conversations/MessageParam.java

@@ -1,7 +1,7 @@
 package com.messagebird.objects.conversations;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
-import org.apache.commons.lang3.StringUtils;
+import com.messagebird.common.StringUtils;
 
 public class MessageParam {
 

api/src/main/java/com/messagebird/objects/integrations/HSMComponent.java

@@ -1,7 +1,7 @@
 package com.messagebird.objects.integrations;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
-import org.apache.commons.lang3.StringUtils;
+import com.messagebird.common.StringUtils;
 
 import java.util.List;