Initial aishare service

src/queue.ts

@@ -0,0 +1,36 @@
+import { store } from "./db.js";
+import { runCapture } from "./capture.js";
+
+class CaptureQueue {
+  private queue: string[] = [];
+  private running = false;
+
+  enqueue(id: string): void {
+    if (!this.queue.includes(id)) this.queue.push(id);
+    void this.drain();
+  }
+
+  restorePending(): void {
+    for (const row of store.queuedCaptures()) {
+      store.updateStatus(row.id, "queued");
+      this.enqueue(row.id);
+    }
+  }
+
+  private async drain(): Promise<void> {
+    if (this.running) return;
+    this.running = true;
+    try {
+      while (this.queue.length) {
+        const id = this.queue.shift()!;
+        const row = store.getCapture(id);
+        if (!row || row.status === "ready") continue;
+        await runCapture(row);
+      }
+    } finally {
+      this.running = false;
+    }
+  }
+}
+
+export const captureQueue = new CaptureQueue();