From 0375d6ddd2282f0b61cab47e8f4ff90c295290c3 Mon Sep 17 00:00:00 2001
From: mrbontor <mrbontor@gmail.com>
Date: Mon, 27 Feb 2023 06:43:33 +0700
Subject: [PATCH] feat(aggregation): allow to filter/search in sub collections

---
 libs/generateAgregation.js | 28 ++++++++++++++++++++++------
 1 file changed, 22 insertions(+), 6 deletions(-)

diff --git a/libs/generateAgregation.js b/libs/generateAgregation.js
index 0ab825c..f26f73b 100644
--- a/libs/generateAgregation.js
+++ b/libs/generateAgregation.js
@@ -5,16 +5,14 @@ const { ValidateAgregation } = require('./validation');
  * @param {Object} query
  * @param {string} query.collectionName
  * @param {string} query.uniqueId
+ * @param {string} query.subSearch
+ * @param {Array<string>} query.fieldToSearch
  * @returns
  */
 const pipeline = (query) => {
-    const { collectionName, uniqueId, projection } = query;
+    const { collectionName, uniqueId, subSearch, fieldToSearch } = query;
 
-    /**
-     * TODO
-     * - custom on `pipeline` (join stage), it doesnt always have to do _query_ `$match` instead using `foreignField`
-     */
-    return [
+    const queryLookup = [
         {
             $lookup: {
                 from: collectionName,
@@ -30,6 +28,24 @@ const pipeline = (query) => {
             }
         }
     ];
+    if (subSearch && fieldToSearch && fieldToSearch.length > 0) {
+        const newearch = fieldToSearch.map((el) => {
+            const key = `${uniqueId}.${el}`;
+            return {
+                [key]: {
+                    $regex: subSearch,
+                    $options: 'i'
+                }
+            };
+        });
+        queryLookup.push({
+            $match: {
+                $or: newearch
+            }
+        });
+    }
+
+    return queryLookup;
 };
 
 /**