WIP - multitenant initial work

backend/src/tenant/tenant.middleware.ts

@@ -1,16 +1,64 @@
-import { Injectable, NestMiddleware } from '@nestjs/common';
+import { Injectable, NestMiddleware, Logger } from '@nestjs/common';
 import { FastifyRequest, FastifyReply } from 'fastify';
+import { TenantDatabaseService } from './tenant-database.service';
 
 @Injectable()
 export class TenantMiddleware implements NestMiddleware {
-  use(req: FastifyRequest['raw'], res: FastifyReply['raw'], next: () => void) {
-    const tenantId = req.headers['x-tenant-id'] as string;
-    
-    if (tenantId) {
-      // Attach tenantId to request object
-      (req as any).tenantId = tenantId;
+  private readonly logger = new Logger(TenantMiddleware.name);
+
+  constructor(private readonly tenantDbService: TenantDatabaseService) {}
+
+  async use(
+    req: FastifyRequest['raw'],
+    res: FastifyReply['raw'],
+    next: () => void,
+  ) {
+    try {
+      // Extract subdomain from hostname
+      const host = req.headers.host || '';
+      const hostname = host.split(':')[0]; // Remove port if present
+      const parts = hostname.split('.');
+
+      // For local development, accept x-tenant-id header as fallback
+      let tenantId = req.headers['x-tenant-id'] as string;
+      let subdomain: string | null = null;
+
+      // Extract subdomain (e.g., "acme" from "acme.routebox.co")
+      if (parts.length > 2) {
+        subdomain = parts[0];
+        // Ignore www subdomain
+        if (subdomain === 'www') {
+          subdomain = null;
+        }
+      }
+
+      // Get tenant by subdomain if available
+      if (subdomain) {
+        const tenant = await this.tenantDbService.getTenantByDomain(subdomain);
+        if (tenant) {
+          tenantId = tenant.id;
+          this.logger.log(
+            `Tenant identified: ${tenant.name} (${tenant.id}) from subdomain: ${subdomain}`,
+          );
+        } else {
+          this.logger.warn(`No tenant found for subdomain: ${subdomain}`);
+        }
+      }
+
+      if (tenantId) {
+        // Attach tenant info to request object
+        (req as any).tenantId = tenantId;
+        if (subdomain) {
+          (req as any).subdomain = subdomain;
+        }
+      } else {
+        this.logger.warn(`No tenant identified from host: ${hostname}`);
+      }
+
+      next();
+    } catch (error) {
+      this.logger.error('Error in tenant middleware', error);
+      next();
     }
-    
-    next();
   }
 }