chore: collect data for self hosted instances

packages/lib/server-only/telemetry/send-instance-info.ts

@@ -0,0 +1,42 @@
+export type SendInstanceInfo = {
+  uniqueId: number;
+  timestamp: Date;
+  version: string;
+};
+
+export const sendInstanceInfo = async ({
+  uniqueId,
+  timestamp,
+  version,
+}: SendInstanceInfo): Promise<void> => {
+  const isProduction = process.env.NODE_ENV === 'production';
+  const isTelemetryDisabled = process.env.DISABLE_TELEMETRY === 'true';
+
+  if (!isProduction || isTelemetryDisabled) {
+    return;
+  }
+
+  const url = 'https://documenso-instances.fly.dev/ping';
+
+  try {
+    const response = await fetch(url, {
+      method: 'POST',
+      body: JSON.stringify({
+        uniqueId,
+        timestamp,
+        version,
+      }),
+      headers: {
+        'Content-Type': 'application/json',
+      },
+    });
+
+    if (!response.ok) {
+      throw new Error(`Failed to record instance, failed with status code ${response.status}`);
+    }
+
+    await response.json();
+  } catch (error) {
+    console.error('Error posting instance information:', error);
+  }
+};