Basic prototype

src/main/java/stirling/software/SPDF/config/AppConfig.java

@@ -195,4 +195,25 @@ public class AppConfig {
     public String uuid() {
         return applicationProperties.getAutomaticallyGenerated().getUUID();
     }
+
+    @Bean(name = "GoogleDriveEnabled")
+    public boolean googleDriveEnabled() {
+        return applicationProperties.getPremium().isEnabled()
+                && applicationProperties.getPremium().getProFeatures().getGoogleDrive().isEnabled();
+    }
+
+    @Bean(name = "GoogleDriveClientId")
+    public String googleDriveClientId() {
+        return applicationProperties.getPremium().getProFeatures().getGoogleDrive().getClientId();
+    }
+
+    @Bean(name = "GoogleDriveApiKey")
+    public String googleDriveApiKey() {
+        return applicationProperties.getPremium().getProFeatures().getGoogleDrive().getApiKey();
+    }
+
+    @Bean(name = "GoogleDriveAppId")
+    public String googleDriveAppId() {
+        return applicationProperties.getPremium().getProFeatures().getGoogleDrive().getAppId();
+    }
 }

src/main/java/stirling/software/SPDF/model/ApplicationProperties.java

@@ -431,6 +431,7 @@ public class ApplicationProperties {
         public static class ProFeatures {
             private boolean ssoAutoLogin;
             private CustomMetadata customMetadata = new CustomMetadata();
+            private GoogleDrive googleDrive = new GoogleDrive();
 
             @Data
             public static class CustomMetadata {
@@ -449,6 +450,26 @@ public class ApplicationProperties {
                             : producer;
                 }
             }
+
+            @Data
+            public static class GoogleDrive {
+                private boolean enabled;
+                private String clientId;
+                private String apiKey;
+                private String appId;
+
+                public String getClientId() {
+                    return clientId == null || clientId.trim().isEmpty() ? "" : clientId;
+                }
+
+                public String getApiKey() {
+                    return apiKey == null || apiKey.trim().isEmpty() ? "" : apiKey;
+                }
+
+                public String getAppId() {
+                    return appId == null || appId.trim().isEmpty() ? "" : appId;
+                }
+            }
         }
 
         @Data

src/main/resources/settings.yml.template

@@ -72,6 +72,11 @@ premium:
       author: username
       creator: Stirling-PDF
       producer: Stirling-PDF
+    googleDrive:
+      enabled: false
+      clientId: ''
+      apiKey: ''
+      appId: ''
 
 legal:
   termsAndConditions: https://www.stirlingpdf.com/terms-and-conditions # URL to the terms and conditions of your application (e.g. https://example.com/terms). Empty string to disable or filename to load from local file in static folder

src/main/resources/static/css/fileSelect.css

@@ -271,3 +271,14 @@
   align-items: center;
   z-index: 9999;
 }
+
+
+.googleDriveButton {
+  position: absolute;
+  bottom: 15px;
+  right: 5px;
+  width: 5%;
+}
+.googleDriveButton img {
+  width:100%
+}

src/main/resources/static/images/google-drive.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg"  viewBox="0 0 48 48" width="96px" height="96px"><path fill="#1e88e5" d="M38.59,39c-0.535,0.93-0.298,1.68-1.195,2.197C36.498,41.715,35.465,42,34.39,42H13.61 c-1.074,0-2.106-0.285-3.004-0.802C9.708,40.681,9.945,39.93,9.41,39l7.67-9h13.84L38.59,39z"/><path fill="#fbc02d" d="M27.463,6.999c1.073-0.002,2.104-0.716,3.001-0.198c0.897,0.519,1.66,1.27,2.197,2.201l10.39,17.996 c0.537,0.93,0.807,1.967,0.808,3.002c0.001,1.037-1.267,2.073-1.806,3.001l-11.127-3.005l-6.924-11.993L27.463,6.999z"/><path fill="#e53935" d="M43.86,30c0,1.04-0.27,2.07-0.81,3l-3.67,6.35c-0.53,0.78-1.21,1.4-1.99,1.85L30.92,30H43.86z"/><path fill="#4caf50" d="M5.947,33.001c-0.538-0.928-1.806-1.964-1.806-3c0.001-1.036,0.27-2.073,0.808-3.004l10.39-17.996 c0.537-0.93,1.3-1.682,2.196-2.2c0.897-0.519,1.929,0.195,3.002,0.197l3.459,11.009l-6.922,11.989L5.947,33.001z"/><path fill="#1565c0" d="M17.08,30l-6.47,11.2c-0.78-0.45-1.46-1.07-1.99-1.85L4.95,33c-0.54-0.93-0.81-1.96-0.81-3H17.08z"/><path fill="#2e7d32" d="M30.46,6.8L24,18L17.53,6.8c0.78-0.45,1.66-0.73,2.6-0.79L27.46,6C28.54,6,29.57,6.28,30.46,6.8z"/></svg>

src/main/resources/static/js/fileInput.js

@@ -80,6 +80,23 @@ function setupFileInput(chooser) {
     overlay = false;
   }
 
+  const googleDriveFileListener = function (e) {
+    const googleDriveFile = e.detail;
+
+    const fileInput = document.getElementById(elementId);
+    if (fileInput?.hasAttribute('multiple')) {
+      allFiles.push(googleDriveFile);
+    } else if (fileInput) {
+      allFiles = [googleDriveFile];
+    }
+
+    const dataTransfer = new DataTransfer();
+    allFiles.forEach((file) => dataTransfer.items.add(file));
+
+    fileInput.files = dataTransfer.files;
+
+    fileInput.dispatchEvent(new CustomEvent('change', { bubbles: true, detail: { source: 'drag-drop' } }));
+  }
 
   const dropListener = function (e) {
     e.preventDefault();
@@ -130,6 +147,7 @@ function setupFileInput(chooser) {
   document.body.addEventListener('dragenter', dragenterListener);
   document.body.addEventListener('dragleave', dragleaveListener);
   document.body.addEventListener('drop', dropListener);
+  document.body.addEventListener('googleDriveFilePicked', googleDriveFileListener);
 
   $('#' + elementId).on('change', async function (e) {
     let element = e.target;

src/main/resources/static/js/googleFilePicker.js

@@ -0,0 +1,111 @@
+  const SCOPES = 'https://www.googleapis.com/auth/drive.readonly';
+  const SESSION_STORAGE_ID = "googleDrivePickerAccessToken"
+
+  let tokenClient;
+  let accessToken = sessionStorage.getItem(SESSION_STORAGE_ID);
+
+  /**
+   * Callback after api.js is loaded.
+   */
+  function gapiLoaded() {
+    gapi.load('client:picker', initializePicker);
+  }
+
+  /**
+   * Callback after the API client is loaded. Loads the
+   * discovery doc to initialize the API.
+   */
+  async function initializePicker() {
+    await gapi.client.load('https://www.googleapis.com/discovery/v1/apis/drive/v3/rest');
+  }
+
+  /**
+   * Callback after Google Identity Services are loaded.
+   */
+  function gisLoaded() {
+    tokenClient = google.accounts.oauth2.initTokenClient({
+      client_id: CLIENT_ID,
+      scope: SCOPES,
+      callback: '', // defined later
+    });
+  }
+
+  /**
+   *  Sign in the user upon button click.
+   */
+  function handleAuthClick() {
+
+    tokenClient.callback = (response) => {
+      if (response.error !== undefined) {
+        throw (response);
+      }
+      accessToken = response.access_token;
+      sessionStorage.setItem(SESSION_STORAGE_ID, accessToken);
+      createPicker();
+    };
+
+    tokenClient.requestAccessToken({prompt: accessToken === null? 'consent' : ''});
+  }
+
+  /**
+   *  Sign out the user upon button click.
+   */
+  function signOut() {
+    if (accessToken) {
+      
+      sessionStorage.removeItem(SESSION_STORAGE_ID);
+      google.accounts.oauth2.revoke(accessToken);
+      accessToken = null;
+    }
+  }
+
+  /**
+   *  Create and render a Picker object for searching images.
+   */
+  function createPicker() {
+    const picker = new google.picker.PickerBuilder()
+        .enableFeature(google.picker.Feature.MULTISELECT_ENABLED)
+        .setDeveloperKey(API_KEY)
+        .setAppId(APP_ID)
+        .setOAuthToken(accessToken)
+        .addView( 
+          new google.picker.DocsView()
+            .setIncludeFolders(true)
+            .setMimeTypes('application/pdf,image/png,image/jpg,image/jpeg,image/svg')
+          )
+        .addView( 
+          new google.picker.DocsView()
+            .setIncludeFolders(true)
+            .setMimeTypes('application/pdf,image/*')
+            .setEnableDrives(true)
+          )
+        .setCallback(pickerCallback)
+        .setTitle('Stirling PDF - Google Drive')
+        .build();
+    picker.setVisible(true);
+  }
+
+  /**
+   * Displays the file details of the user's selection.
+   * @param {object} data - Containers the user selection from the picker
+   */
+  async function pickerCallback(data) {
+    if (data.action === google.picker.Action.PICKED) {
+      data[google.picker.Response.DOCUMENTS].forEach(async pickedFile => {
+        const fileId = pickedFile[google.picker.Document.ID];
+        console.log(fileId);
+        const res = await gapi.client.drive.files.get({
+          'fileId': fileId,
+          'alt': 'media',
+        });
+        
+        var file = new File([new Uint8Array(res.body.length).map((_, i) => res.body.charCodeAt(i))],
+         pickedFile.name, {
+          type: pickedFile.mimeType,
+           lastModified: pickedFile.lastModified,
+            endings: pickedFile.endings
+          } )
+        document.body.dispatchEvent(new CustomEvent("googleDriveFilePicked", {detail: file}));
+      });
+    }
+  }

src/main/resources/templates/fragments/common.html

@@ -245,6 +245,9 @@
         <div th:text="#{fileChooser.or}" style="margin-right: 5px"></div>
         <div th:text="#{fileChooser.dragAndDrop}" id="dragAndDrop"></div>
       </div>
+    </div>
+     <div th:if="${@GoogleDriveEnabled == true}"  id="google-drive-button" class="googleDriveButton" onclick="handleAuthClick()"> 
+      <img th:src="@{'/images/google-drive.svg'}" alt="google drive">
     </div>
     <div class="selected-files flex-wrap"></div>
   </div>
@@ -258,4 +261,17 @@
     </div>
   </div>
   <script th:src="@{'/js/fileInput.js'}" type="module"></script>
+
+  <div th:if="${@GoogleDriveEnabled == true}" >
+    <script type="text/javascript" th:src="@{'/js/googleFilePicker.js'}"></script>
+    <script async defer src="https://apis.google.com/js/api.js" onload="gapiLoaded()"></script>
+    <script async defer src="https://accounts.google.com/gsi/client" onload="gisLoaded()"></script>
+  
+    <script th:inline="javascript">
+      const CLIENT_ID = /*[[${@GoogleDriveClientId}]]*/ null;
+      const API_KEY = /*[[${@GoogleDriveApiKey}]]*/ null;
+      const APP_ID = /*[[${@GoogleDriveAppId}]]*/ null;
+    
+    </script>
+  </div>
 </th:block>