B2B-88: add starter kit structure and elements

packages/supabase/src/clients/middleware-client.ts

@@ -0,0 +1,38 @@
+import 'server-only';
+
+import { type NextRequest, NextResponse } from 'next/server';
+
+import { createServerClient } from '@supabase/ssr';
+
+import { Database } from '../database.types';
+import { getSupabaseClientKeys } from '../get-supabase-client-keys';
+
+/**
+ * Creates a middleware client for Supabase.
+ *
+ * @param {NextRequest} request - The Next.js request object.
+ * @param {NextResponse} response - The Next.js response object.
+ */
+export function createMiddlewareClient<GenericSchema = Database>(
+  request: NextRequest,
+  response: NextResponse,
+) {
+  const keys = getSupabaseClientKeys();
+
+  return createServerClient<GenericSchema>(keys.url, keys.anonKey, {
+    cookies: {
+      getAll() {
+        return request.cookies.getAll();
+      },
+      setAll(cookiesToSet) {
+        cookiesToSet.forEach(({ name, value }) =>
+          request.cookies.set(name, value),
+        );
+
+        cookiesToSet.forEach(({ name, value, options }) =>
+          response.cookies.set(name, value, options),
+        );
+      },
+    },
+  });
+}