From aec2c16d8cd3748d2ce694b76f868243f7ff88af Mon Sep 17 00:00:00 2001
From: Yuval Adam <_@yuv.al>
Date: Thu, 10 Jul 2025 13:29:31 +0200
Subject: Add durable object

---
 src/pages/api/counter.ts | 59 ++++++++++++++++++++++++++++++++++++++++++
 src/worker.ts            | 67 ++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 126 insertions(+)
 create mode 100644 src/pages/api/counter.ts
 create mode 100644 src/worker.ts

(limited to 'src')

diff --git a/src/pages/api/counter.ts b/src/pages/api/counter.ts
new file mode 100644
index 0000000..152dc54
--- /dev/null
+++ b/src/pages/api/counter.ts
@@ -0,0 +1,59 @@
+import type { APIRoute } from 'astro';
+
+interface Env {
+  COUNTER_DO: DurableObjectNamespace;
+}
+
+export const GET: APIRoute = async ({ request }) => {
+  const env = request.cf?.env as Env;
+  if (!env?.COUNTER_DO) {
+    return new Response(JSON.stringify({ error: 'Durable Object not available' }), {
+      status: 500,
+      headers: { 'Content-Type': 'application/json' }
+    });
+  }
+
+  const id = env.COUNTER_DO.idFromName('global-counter');
+  const stub = env.COUNTER_DO.get(id);
+
+  const response = await stub.fetch(new Request('https://counter.do/get'));
+  const data = await response.json();
+
+  return new Response(JSON.stringify(data), {
+    headers: { 'Content-Type': 'application/json' }
+  });
+};
+
+export const POST: APIRoute = async ({ request }) => {
+  const env = request.cf?.env as Env;
+  if (!env?.COUNTER_DO) {
+    return new Response(JSON.stringify({ error: 'Durable Object not available' }), {
+      status: 500,
+      headers: { 'Content-Type': 'application/json' }
+    });
+  }
+
+  const url = new URL(request.url);
+  const action = url.searchParams.get('action') || 'increment';
+
+  const id = env.COUNTER_DO.idFromName('global-counter');
+  const stub = env.COUNTER_DO.get(id);
+
+  let doRequest: Request;
+  switch (action) {
+    case 'reset':
+      doRequest = new Request('https://counter.do/reset');
+      break;
+    case 'increment':
+    default:
+      doRequest = new Request('https://counter.do/increment');
+      break;
+  }
+
+  const response = await stub.fetch(doRequest);
+  const data = await response.json();
+
+  return new Response(JSON.stringify(data), {
+    headers: { 'Content-Type': 'application/json' }
+  });
+};
\ No newline at end of file
diff --git a/src/worker.ts b/src/worker.ts
new file mode 100644
index 0000000..0ad83a6
--- /dev/null
+++ b/src/worker.ts
@@ -0,0 +1,67 @@
+import type { SSRManifest } from 'astro';
+import { App } from 'astro/app';
+import { handle } from '@astrojs/cloudflare/handler';
+import { DurableObject } from 'cloudflare:workers';
+
+interface Env {
+  COUNTER_DO: DurableObjectNamespace;
+}
+
+class CounterDurableObject extends DurableObject<Env> {
+  constructor(ctx: DurableObjectState, env: Env) {
+    super(ctx, env);
+  }
+
+  async fetch(request: Request): Promise<Response> {
+    const url = new URL(request.url);
+    const pathname = url.pathname;
+
+    if (pathname === '/increment') {
+      const currentValue = (await this.ctx.storage.get<number>('counter')) || 0;
+      const newValue = currentValue + 1;
+      await this.ctx.storage.put('counter', newValue);
+      
+      return new Response(JSON.stringify({ 
+        counter: newValue,
+        timestamp: new Date().toISOString()
+      }), {
+        headers: { 'Content-Type': 'application/json' }
+      });
+    }
+
+    if (pathname === '/get') {
+      const currentValue = (await this.ctx.storage.get<number>('counter')) || 0;
+      return new Response(JSON.stringify({ 
+        counter: currentValue,
+        timestamp: new Date().toISOString()
+      }), {
+        headers: { 'Content-Type': 'application/json' }
+      });
+    }
+
+    if (pathname === '/reset') {
+      await this.ctx.storage.put('counter', 0);
+      return new Response(JSON.stringify({ 
+        counter: 0,
+        message: 'Counter reset',
+        timestamp: new Date().toISOString()
+      }), {
+        headers: { 'Content-Type': 'application/json' }
+      });
+    }
+
+    return new Response('Not found', { status: 404 });
+  }
+}
+
+export function createExports(manifest: SSRManifest) {
+  const app = new App(manifest);
+  return {
+    default: {
+      async fetch(request, env, ctx) {
+        return handle(manifest, app, request, env, ctx);
+      }
+    } satisfies ExportedHandler<Env>,
+    CounterDurableObject: CounterDurableObject,
+  };
+}
\ No newline at end of file
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