Added support for updating whatsapp template

Author: Daniel-Alvarez-Morales

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

@@ -1876,6 +1876,31 @@ public TemplateResponse createWhatsAppTemplate(final Template template)
         return messageBirdService.sendPayLoad(url, template, TemplateResponse.class);
     }
 
+    /**
+     * Update a WhatsApp message template through MessageBird.
+     *
+     * @param template {@link Template} object to be created
+     * @param templateName A name as returned by getWhatsAppTemplateBy in the name variable
+     * @param language A language code as returned by getWhatsAppTemplateBy in the language variable
+     * @return {@link TemplateResponse} response object
+     * @throws UnauthorizedException    if client is unauthorized
+     * @throws GeneralException         general exception
+     * @throws IllegalArgumentException invalid template format
+     */
+    public TemplateResponse updateWhatsAppTemplate(final Template template, final String templateName, final String language)
+            throws UnauthorizedException, GeneralException, IllegalArgumentException {
+        template.validate();
+
+        String url = String.format(
+                "%s%s%s/%s/%s",
+                INTEGRATIONS_BASE_URL_V2,
+                INTEGRATIONS_WHATSAPP_PATH,
+                TEMPLATES_PATH,
+                templateName,
+                language);
+
+        return messageBirdService.sendPayLoad("PUT",url, template, TemplateResponse.class);
+    }
     /**
      * Gets a WhatsAppTemplate listing with specified pagination options.
      *

api/src/test/java/com/messagebird/MessageBirdClientTest.java

@@ -1077,6 +1077,44 @@ public void testCreateWhatsAppTemplate() throws UnauthorizedException, GeneralEx
             assertEquals(response.getComponents().get(i).getText(), templateResponse.getComponents().get(i).getText());
         }
     }
+    @Test
+    public void testUpdateWhatsAppTemplate() throws UnauthorizedException, GeneralException {
+        final TemplateResponse templateResponse = TestUtil.createWhatsAppTemplateResponse("sample_template_name", "ko");
+        final Template template = TestUtil.createWhatsAppTemplate("sample_template_name", "ko");
+
+        MessageBirdService messageBirdServiceMock = mock(MessageBirdService.class);
+        MessageBirdClient messageBirdClientInjectMock = new MessageBirdClient(messageBirdServiceMock);
+
+        String url = String.format(
+                "%s%s%s/%s/%s",
+                INTEGRATIONS_BASE_URL_V2,
+                INTEGRATIONS_WHATSAPP_PATH,
+                TEMPLATES_PATH,
+                "sample_template_name",
+                "ko"
+        );
+
+        when(messageBirdServiceMock.sendPayLoad("PUT",url, template, TemplateResponse.class))
+                .thenReturn(templateResponse);
+
+        final TemplateResponse response = messageBirdClientInjectMock.updateWhatsAppTemplate(template,"sample_template_name","ko");
+        verify(messageBirdServiceMock, times(1)).sendPayLoad("PUT",url, template, TemplateResponse.class);
+        assertNotNull(response);
+        assertEquals(response.getName(), templateResponse.getName());
+        assertEquals(response.getLanguage(), templateResponse.getLanguage());
+        assertEquals(response.getCategory(), templateResponse.getCategory());
+        assertEquals(response.getStatus(), templateResponse.getStatus());
+        assertEquals(response.getWabaID(), templateResponse.getWabaID());
+        assertEquals(response.getCreatedAt(), templateResponse.getCreatedAt());
+        assertEquals(response.getUpdatedAt(), templateResponse.getUpdatedAt());
+
+        /* verify components */
+        for (int i = 0; i < response.getComponents().size(); i++) {
+            assertEquals(response.getComponents().get(i).getType(), templateResponse.getComponents().get(i).getType());
+            assertEquals(response.getComponents().get(i).getFormat(), templateResponse.getComponents().get(i).getFormat());
+            assertEquals(response.getComponents().get(i).getText(), templateResponse.getComponents().get(i).getText());
+        }
+    }
 
     @Test
     public void testListWhatsAppTemplates() throws UnauthorizedException, GeneralException {