feat: 🎸 users

added webhook on new users

supabase/functions/user/index.ts

@@ -0,0 +1,66 @@
+/* Instructions:
+
+--- for the rest of these steps you will need your supabase project id which can be found in your console url: https://supabase.com/dashboard/project/<projectId> ---
+3. run `supabase secrets set --env-file ./supabase/.env` to set the environment variables
+4. run `supabase functions deploy add-new-email` to deploy the function
+5. in the supabase console go to Database/Webhook and create new and point it to the edge function 'add-new-email'. You will have to add a new header Authorization: Bearer ${anon public key from Settings/API} to the webhook.
+*/
+
+import { serve } from "https://deno.land/std@0.168.0/http/server.ts";
+
+const postHogApiKey = Deno.env.get("POSTHOG_API_KEY");
+
+interface WebhookPayload {
+  type: "INSERT" | "UPDATE" | "DELETE";
+  table: string;
+  record: {
+    id: string;
+    aud: string;
+    role: string;
+    email: string;
+    phone: null;
+    created_at: string;
+  };
+}
+
+const postHogUrl = "https://app.posthog.com/capture/";
+
+serve(
+  async (req: { json: () => WebhookPayload | PromiseLike<WebhookPayload> }) => {
+    if (!postHogApiKey) {
+      throw new Error("Missing PostHog API key");
+    }
+
+    const payload: WebhookPayload = await req.json();
+
+    if (payload.record.email && payload.type === "INSERT") {
+      const postHogPayload = {
+        event: "USER_SIGNED_UP",
+        api_key: postHogApiKey,
+        distinct_id: payload.record.id,
+        properties: {
+          email: payload.record.email,
+        },
+        timestamp: payload.record.created_at, // assuming this is in ISO 8601 format
+      };
+
+      const response = await fetch(postHogUrl, {
+        method: "POST",
+        headers: {
+          "Content-Type": "application/json",
+        },
+        body: JSON.stringify(postHogPayload),
+      });
+
+      if (!response.ok) {
+        throw new Error(
+          `Error sending event to PostHog: ${response.statusText}`
+        );
+      }
+
+      return new Response(null, { status: 200 });
+    }
+
+    return new Response("No new user signup event detected", { status: 200 });
+  }
+);