#777 - Extra states for invalid files

src/helpers/ArticleHelper.ts

@@ -741,15 +741,17 @@ export class ArticleHelper {
    * Get the details of the current article
    * @returns
    */
-  public static async getDetails(filePath: string) {
+  public static async getDetails(
+    filePath: string
+  ): Promise<Article | 'nofilepath' | 'nodata' | 'notsupported'> {
     const baseUrl = Settings.get<string>(SETTING_SITE_BASEURL);
     if (!filePath) {
-      return null;
+      return 'nofilepath';
     }
 
     const document = await workspace.openTextDocument(filePath);
     if (!ArticleHelper.isSupportedFile(document)) {
-      return null;
+      return 'notsupported';
     }
 
     const article = await ArticleHelper.getFrontMatterByPath(filePath);
@@ -805,7 +807,7 @@ export class ArticleHelper {
       };
     }
 
-    return null;
+    return 'nodata';
   }
 
   /**

src/listeners/panel/DataListener.ts

@@ -199,7 +199,7 @@ export class DataListener extends BaseListener {
       if (filePath) {
         articleDetails = await ArticleHelper.getDetails(filePath);
 
-        if (!articleDetails) {
+        if (!articleDetails || articleDetails === 'nodata') {
           try {
             const contents = await ArticleHelper.getContents(filePath);
             if (contents) {
@@ -214,6 +214,10 @@ export class DataListener extends BaseListener {
             });
             return;
           }
+        } else if (articleDetails === 'notsupported' || articleDetails === 'nofilepath') {
+          // No file or invalid file format
+          this.sendMsg(Command.metadata, undefined);
+          return;
         }
       } else {
         this.sendMsg(Command.metadata, undefined);