Revert "Revert "Permission phase 2""

This reverts commit 8b9244b079.

backend/src/lib/knex/dynamic.ts

@@ -2,32 +2,31 @@ import { Knex } from "knex";
 
 import { UnauthorizedError } from "../errors";
 
-type TKnexDynamicPrimitiveOperator = {
+type TKnexDynamicPrimitiveOperator<T extends object> = {
   operator: "eq" | "ne" | "startsWith" | "endsWith";
   value: string;
-  field: string;
+  field: Extract<keyof T, string>;
 };
 
-type TKnexDynamicInOperator = {
+type TKnexDynamicInOperator<T extends object> = {
   operator: "in";
   value: string[] | number[];
-  field: string;
+  field: Extract<keyof T, string>;
 };
 
-type TKnexNonGroupOperator = TKnexDynamicInOperator | TKnexDynamicPrimitiveOperator;
+type TKnexNonGroupOperator<T extends object> = TKnexDynamicInOperator<T> | TKnexDynamicPrimitiveOperator<T>;
 
-type TKnexGroupOperator = {
+type TKnexGroupOperator<T extends object> = {
   operator: "and" | "or" | "not";
-  value: (TKnexNonGroupOperator | TKnexGroupOperator)[];
+  value: (TKnexNonGroupOperator<T> | TKnexGroupOperator<T>)[];
 };
 
-// akhilmhdh: This is still in pending state and not yet ready. If you want to use it ping me.
-// used when you need to write a complex query with the orm
-// use it when you need complex or and and condition - most of the time not needed
-// majorly used with casl permission to filter data based on permission
-export type TKnexDynamicOperator = TKnexGroupOperator | TKnexNonGroupOperator;
+export type TKnexDynamicOperator<T extends object> = TKnexGroupOperator<T> | TKnexNonGroupOperator<T>;
 
-export const buildDynamicKnexQuery = (dynamicQuery: TKnexDynamicOperator, rootQueryBuild: Knex.QueryBuilder) => {
+export const buildDynamicKnexQuery = <T extends object>(
+  rootQueryBuild: Knex.QueryBuilder,
+  dynamicQuery: TKnexDynamicOperator<T>
+) => {
   const stack = [{ filterAst: dynamicQuery, queryBuilder: rootQueryBuild }];
 
   while (stack.length) {
@@ -50,34 +49,25 @@ export const buildDynamicKnexQuery = (dynamicQuery: TKnexDynamicOperator, rootQu
         break;
       }
       case "and": {
-        void queryBuilder.andWhere((subQueryBuilder) => {
-          filterAst.value.forEach((el) => {
-            stack.push({
-              queryBuilder: subQueryBuilder,
-              filterAst: el
-            });
+        filterAst.value.forEach((el) => {
+          void queryBuilder.andWhere((subQueryBuilder) => {
+            buildDynamicKnexQuery(subQueryBuilder, el);
           });
         });
         break;
       }
       case "or": {
-        void queryBuilder.orWhere((subQueryBuilder) => {
-          filterAst.value.forEach((el) => {
-            stack.push({
-              queryBuilder: subQueryBuilder,
-              filterAst: el
-            });
+        filterAst.value.forEach((el) => {
+          void queryBuilder.orWhere((subQueryBuilder) => {
+            buildDynamicKnexQuery(subQueryBuilder, el);
           });
         });
         break;
       }
       case "not": {
-        void queryBuilder.whereNot((subQueryBuilder) => {
-          filterAst.value.forEach((el) => {
-            stack.push({
-              queryBuilder: subQueryBuilder,
-              filterAst: el
-            });
+        filterAst.value.forEach((el) => {
+          void queryBuilder.whereNot((subQueryBuilder) => {
+            buildDynamicKnexQuery(subQueryBuilder, el);
           });
         });
         break;

backend/src/lib/knex/index.ts

@@ -3,6 +3,7 @@ import { Knex } from "knex";
 import { Tables } from "knex/types/tables";
 
 import { DatabaseError } from "../errors";
+import { buildDynamicKnexQuery, TKnexDynamicOperator } from "./dynamic";
 
 export * from "./connection";
 export * from "./join";
@@ -20,9 +21,10 @@ export const withTransaction = <K extends object>(db: Knex, dal: K) => ({
 export type TFindFilter<R extends object = object> = Partial<R> & {
   $in?: Partial<{ [k in keyof R]: R[k][] }>;
   $search?: Partial<{ [k in keyof R]: R[k] }>;
+  $complex?: TKnexDynamicOperator<R>;
 };
 export const buildFindFilter =
-  <R extends object = object>({ $in, $search, ...filter }: TFindFilter<R>) =>
+  <R extends object = object>({ $in, $search, $complex, ...filter }: TFindFilter<R>) =>
   (bd: Knex.QueryBuilder<R, R>) => {
     void bd.where(filter);
     if ($in) {
@@ -39,6 +41,9 @@ export const buildFindFilter =
         }
       });
     }
+    if ($complex) {
+      return buildDynamicKnexQuery(bd, $complex);
+    }
     return bd;
   };