calculate affected counts and take into account includeDescendants when executing

src/routes/api/bulk_action.js

@@ -2,13 +2,47 @@ const becca = require("../../becca/becca");
 const bulkActionService = require("../../services/bulk_actions");
 
 function execute(req) {
-    const {noteIds} = req.body;
+    const {noteIds, includeDescendants} = req.body;
+
+    const affectedNoteIds = getAffectedNoteIds(noteIds, includeDescendants);
 
     const bulkActionNote = becca.getNote('bulkaction');
 
-    bulkActionService.executeActions(bulkActionNote, noteIds);
+    bulkActionService.executeActions(bulkActionNote, affectedNoteIds);
+}
+
+function getAffectedNoteCount(req) {
+    const {noteIds, includeDescendants} = req.body;
+
+    const affectedNoteIds = getAffectedNoteIds(noteIds, includeDescendants);
+
+    return {
+        affectedNoteCount: affectedNoteIds.size
+    };
+}
+
+function getAffectedNoteIds(noteIds, includeDescendants) {
+    const affectedNoteIds = new Set();
+
+    for (const noteId of noteIds) {
+        const note = becca.getNote(noteId);
+
+        if (!note) {
+            continue;
+        }
+
+        affectedNoteIds.add(noteId);
+
+        if (includeDescendants) {
+            for (const descendantNoteId of note.getDescendantNoteIds()) {
+                affectedNoteIds.add(descendantNoteId);
+            }
+        }
+    }
+    return affectedNoteIds;
 }
 
 module.exports = {
-    execute
+    execute,
+    getAffectedNoteCount
 };