feat: modified error handler to return possible rules for a validation failed rules

backend/src/ee/services/permission/permission-types.ts

@@ -1,14 +1,7 @@
 import picomatch from "picomatch";
 import { z } from "zod";
 
-export enum PermissionConditionOperators {
-  $IN = "$in",
-  $ALL = "$all",
-  $REGEX = "$regex",
-  $EQ = "$eq",
-  $NEQ = "$ne",
-  $GLOB = "$glob"
-}
+import { PermissionConditionOperators } from "@app/lib/casl";
 
 export const PermissionConditionSchema = {
   [PermissionConditionOperators.$IN]: z.string().trim().min(1).array(),

backend/src/ee/services/permission/project-permission.ts

@@ -1,10 +1,10 @@
 import { AbilityBuilder, createMongoAbility, ForcedSubject, MongoAbility } from "@casl/ability";
 import { z } from "zod";
 
-import { conditionsMatcher } from "@app/lib/casl";
+import { conditionsMatcher, PermissionConditionOperators } from "@app/lib/casl";
 import { UnpackedPermissionSchema } from "@app/server/routes/santizedSchemas/permission";
 
-import { PermissionConditionOperators, PermissionConditionSchema } from "./permission-types";
+import { PermissionConditionSchema } from "./permission-types";
 
 export enum ProjectPermissionActions {
   Read = "read",

backend/src/lib/casl/index.ts

@@ -54,3 +54,12 @@ export const isAtLeastAsPrivileged = (permissions1: MongoAbility, permissions2:
 
   return set1.size >= set2.size;
 };
+
+export enum PermissionConditionOperators {
+  $IN = "$in",
+  $ALL = "$all",
+  $REGEX = "$regex",
+  $EQ = "$eq",
+  $NEQ = "$ne",
+  $GLOB = "$glob"
+}

backend/src/server/plugins/error-handler.ts

@@ -1,4 +1,4 @@
-import { ForbiddenError } from "@casl/ability";
+import { ForbiddenError, PureAbility } from "@casl/ability";
 import fastifyPlugin from "fastify-plugin";
 import jwt from "jsonwebtoken";
 import { ZodError } from "zod";
@@ -63,7 +63,13 @@ export const fastifyErrHandler = fastifyPlugin(async (server: FastifyZodProvider
       void res.status(HttpStatusCodes.Forbidden).send({
         statusCode: HttpStatusCodes.Forbidden,
         error: "PermissionDenied",
-        message: `You are not allowed to ${error.action} on ${error.subjectType} - ${JSON.stringify(error.subject)}`
+        message: `You are not allowed to ${error.action} on ${error.subjectType}`,
+        details: (error.ability as PureAbility).rulesFor(error.action as string, error.subjectType).map((el) => ({
+          action: el.action,
+          inverted: el.inverted,
+          subject: el.subject,
+          conditions: el.conditions
+        }))
       });
     } else if (error instanceof ForbiddenRequestError) {
       void res.status(HttpStatusCodes.Forbidden).send({

backend/src/server/routes/sanitizedSchemas.ts

@@ -47,6 +47,7 @@ export const DefaultResponseErrorsSchema = {
   403: z.object({
     statusCode: z.literal(403),
     message: z.string(),
+    details: z.any().optional(),
     error: z.string()
   }),
   500: z.object({