small script API additions

src/entities/note.js

@@ -778,6 +778,16 @@ class Note extends Entity {
         return notePaths;
     }
 
+    /**
+     * @param ancestorNoteId
+     * @return {Promise<boolean>} - true if ancestorNoteId occurs in at least one of the note's paths
+     */
+    async isDescendantOfNote(ancestorNoteId) {
+        const notePaths = await this.getAllNotePaths();
+
+        return notePaths.some(path => path.includes(ancestorNoteId));
+    }
+
     beforeSaving() {
         if (!this.isDeleted) {
             this.isDeleted = false;

src/services/backend_script_api.js

@@ -254,6 +254,14 @@ function BackendScriptApi(currentNote, apiParams) {
      */
     this.getDateNote = dateNoteService.getDateNote;
 
+    /**
+     * Returns today's day note. If such note doesn't exist, it is created.
+     *
+     * @method
+     * @returns {Promise<Note|null>}
+     */
+    this.getTodayNote = dateNoteService.getTodayNote;
+
     /**
      * Returns note for the first date of the week of the given date.
      *

src/services/date_notes.js

@@ -170,6 +170,10 @@ async function getDateNote(dateStr) {
     return dateNote;
 }
 
+async function getTodayNote() {
+    return await getDateNote(dateUtils.localNowDate());
+}
+
 function getStartOfTheWeek(date, startOfTheWeek) {
     const day = date.getDay();
     let diff;
@@ -202,5 +206,6 @@ module.exports = {
     getYearNote,
     getMonthNote,
     getWeekNote,
-    getDateNote
+    getDateNote,
+    getTodayNote
 };