Chungus

server/routers/domain/privateCheckDomainNamespaceAvailability.ts

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+/*
+ * This file is part of a proprietary work.
+ *
+ * Copyright (c) 2025 Fossorial, Inc.
+ * All rights reserved.
+ *
+ * This file is licensed under the Fossorial Commercial License.
+ * You may not use this file except in compliance with the License.
+ * Unauthorized use, copying, modification, or distribution is strictly prohibited.
+ *
+ * This file is not licensed under the AGPLv3.
+ */
+
+import { Request, Response, NextFunction } from "express";
+import { z } from "zod";
+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";
+import { db, domainNamespaces, resources } from "@server/db";
+import { inArray } from "drizzle-orm";
+
+const paramsSchema = z.object({}).strict();
+
+const querySchema = z
+    .object({
+        subdomain: z.string()
+    })
+    .strict();
+
+export type CheckDomainAvailabilityResponse = {
+    available: boolean;
+    options: {
+        domainNamespaceId: string;
+        domainId: string;
+        fullDomain: string;
+    }[];
+};
+
+registry.registerPath({
+    method: "get",
+    path: "/domain/check-namespace-availability",
+    description: "Check if a domain namespace is available based on subdomain",
+    tags: [OpenAPITags.Domain],
+    request: {
+        params: paramsSchema,
+        query: querySchema
+    },
+    responses: {}
+});
+
+export async function checkDomainNamespaceAvailability(
+    req: Request,
+    res: Response,
+    next: NextFunction
+): Promise<any> {
+    try {
+        const parsedQuery = querySchema.safeParse(req.query);
+        if (!parsedQuery.success) {
+            return next(
+                createHttpError(
+                    HttpCode.BAD_REQUEST,
+                    fromError(parsedQuery.error).toString()
+                )
+            );
+        }
+        const { subdomain } = parsedQuery.data;
+
+        const namespaces = await db.select().from(domainNamespaces);
+        let possibleDomains = namespaces.map((ns) => {
+            const desired = `${subdomain}.${ns.domainNamespaceId}`;
+            return {
+                fullDomain: desired,
+                domainId: ns.domainId,
+                domainNamespaceId: ns.domainNamespaceId
+            };
+        });
+
+        if (!possibleDomains.length) {
+            return response<CheckDomainAvailabilityResponse>(res, {
+                data: {
+                    available: false,
+                    options: []
+                },
+                success: true,
+                error: false,
+                message: "No domain namespaces available",
+                status: HttpCode.OK
+            });
+        }
+
+        const existingResources = await db
+            .select()
+            .from(resources)
+            .where(
+                inArray(
+                    resources.fullDomain,
+                    possibleDomains.map((d) => d.fullDomain)
+                )
+            );
+
+        possibleDomains = possibleDomains.filter(
+            (domain) =>
+                !existingResources.some(
+                    (resource) => resource.fullDomain === domain.fullDomain
+                )
+        );
+
+        return response<CheckDomainAvailabilityResponse>(res, {
+            data: {
+                available: possibleDomains.length > 0,
+                options: possibleDomains
+            },
+            success: true,
+            error: false,
+            message: "Domain namespaces checked successfully",
+            status: HttpCode.OK
+        });
+    } catch (error) {
+        logger.error(error);
+        return next(
+            createHttpError(HttpCode.INTERNAL_SERVER_ERROR, "An error occurred")
+        );
+    }
+}