improvements: address feedback

backend/src/lib/knex/connection.ts

@@ -1,6 +1,8 @@
 import { URL } from "url"; // Import the URL class
 
-export const getDbConnectionHost = (urlString: string) => {
+export const getDbConnectionHost = (urlString?: string) => {
+  if (!urlString) return null;
+
   try {
     const url = new URL(urlString);
     // Split hostname and port (if provided)

backend/src/lib/knex/dynamic.ts

@@ -2,11 +2,17 @@ import { Knex } from "knex";
 
 import { UnauthorizedError } from "../errors";
 
-type TKnexDynamicPrimitiveOperator<T extends object> = {
-  operator: "eq" | "ne" | "startsWith" | "endsWith";
-  value: string;
-  field: Extract<keyof T, string>;
-};
+type TKnexDynamicPrimitiveOperator<T extends object> =
+  | {
+      operator: "eq" | "ne" | "startsWith" | "endsWith";
+      value: string;
+      field: Extract<keyof T, string>;
+    }
+  | {
+      operator: "notIn";
+      value: string[];
+      field: Extract<keyof T, string>;
+    };
 
 type TKnexDynamicInOperator<T extends object> = {
   operator: "in";
@@ -48,6 +54,10 @@ export const buildDynamicKnexQuery = <T extends object>(
         void queryBuilder.whereILike(filterAst.field, `%${filterAst.value}`);
         break;
       }
+      case "notIn": {
+        void queryBuilder.whereNotIn(filterAst.field, filterAst.value);
+        break;
+      }
       case "and": {
         filterAst.value.forEach((el) => {
           void queryBuilder.andWhere((subQueryBuilder) => {