Scoped Branch - Rule Templates:

- Add rule templates for reusable access control rules
- Support template assignment to resources with automatic rule propagation
- Add template management UI
- Implement template rule protection on resource rules page

server/routers/ruleTemplate/listResourceTemplates.ts

@@ -0,0 +1,104 @@
+import { Request, Response, NextFunction } from "express";
+import { z } from "zod";
+import { db } from "@server/db";
+import { resourceTemplates, ruleTemplates, resources } from "@server/db";
+import { eq } from "drizzle-orm";
+import response from "@server/lib/response";
+import HttpCode from "@server/types/HttpCode";
+import createHttpError from "http-errors";
+import logger from "@server/logger";
+import { fromError } from "zod-validation-error";
+import { OpenAPITags, registry } from "@server/openApi";
+
+const listResourceTemplatesParamsSchema = z
+    .object({
+        resourceId: z
+            .string()
+            .transform(Number)
+            .pipe(z.number().int().positive())
+    })
+    .strict();
+
+export type ListResourceTemplatesResponse = {
+    templates: Awaited<ReturnType<typeof queryResourceTemplates>>;
+};
+
+function queryResourceTemplates(resourceId: number) {
+    return db
+        .select({
+            templateId: ruleTemplates.templateId,
+            name: ruleTemplates.name,
+            description: ruleTemplates.description,
+            orgId: ruleTemplates.orgId,
+            createdAt: ruleTemplates.createdAt
+        })
+        .from(resourceTemplates)
+        .innerJoin(ruleTemplates, eq(resourceTemplates.templateId, ruleTemplates.templateId))
+        .where(eq(resourceTemplates.resourceId, resourceId))
+        .orderBy(ruleTemplates.createdAt);
+}
+
+registry.registerPath({
+    method: "get",
+    path: "/resource/{resourceId}/templates",
+    description: "List templates assigned to a resource.",
+    tags: [OpenAPITags.Resource, OpenAPITags.RuleTemplate],
+    request: {
+        params: listResourceTemplatesParamsSchema
+    },
+    responses: {}
+});
+
+export async function listResourceTemplates(
+    req: Request,
+    res: Response,
+    next: NextFunction
+): Promise<any> {
+    try {
+        const parsedParams = listResourceTemplatesParamsSchema.safeParse(
+            req.params
+        );
+        if (!parsedParams.success) {
+            return next(
+                createHttpError(
+                    HttpCode.BAD_REQUEST,
+                    fromError(parsedParams.error)
+                )
+            );
+        }
+        const { resourceId } = parsedParams.data;
+
+        // Verify the resource exists
+        const [resource] = await db
+            .select()
+            .from(resources)
+            .where(eq(resources.resourceId, resourceId))
+            .limit(1);
+
+        if (!resource) {
+            return next(
+                createHttpError(
+                    HttpCode.NOT_FOUND,
+                    `Resource with ID ${resourceId} not found`
+                )
+            );
+        }
+
+        const templatesList = await queryResourceTemplates(resourceId);
+
+        return response<ListResourceTemplatesResponse>(res, {
+            data: {
+                templates: templatesList
+            },
+            success: true,
+            error: false,
+            message: "Resource templates retrieved successfully",
+            status: HttpCode.OK
+        });
+    } catch (error) {
+        logger.error(error);
+        return next(
+            createHttpError(HttpCode.INTERNAL_SERVER_ERROR, "An error occurred")
+        );
+    }
+}