Functions

How do I pair Polar.sh + Hono + Appwrite functions?

Jul 14, 2025, 20:00

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AbhishekOriginal post

Rank 1: Thread

Jul 14, 2025, 19:42

This is what all it required by polar to see the webhook data. Managing with webhook data is not an issue, but how do I pair this all with appwrite functions structure so I will be able to verify the signature and get the webhook data in the first place?

import { Hono } from "hono";
import { Webhooks } from "@polar-sh/hono";

const app = new Hono();

app.post(
    "/polar/webhooks",
    Webhooks({
        webhookSecret: process.env.POLAR_WEBHOOK_SECRET!,
        onPayload: async (payload) => {
            console.log("Received webhook payload:", payload);
        },
    })
);

Summary

Developers are seeking help on pairing Polar.sh, Hono, and Appwrite functions. They shared code snippets for validating events and handling webhooks but are unsure how to integrate them. They need guidance on converting Appwrite context into a Hono context. Solution: To integrate the functionalities, developers need to use the provided code snippet that sets up webhooks and handles payloads, ensuring proper verification.

Kenny

Jul 14, 2025, 19:50

Do you have something like this

https://github.com/dishwasher-detergent/kurioh/blob/main/functions/api/src/main.ts#L44-L45
https://github.com/dishwasher-detergent/kurioh/blob/main/functions/api/src/lib/utils.ts#L6

that converts the appwrite context into a context for hono?

Abhishek

Rank 1: Thread

Jul 14, 2025, 19:56

var Webhooks = ({
  webhookSecret,
  onPayload,
  entitlements,
  ...eventHandlers
}) => {
  return async (c) => {
    const requestBody = await c.req.text();
    const webhookHeaders = {
      "webhook-id": c.req.header("webhook-id") ?? "",
      "webhook-timestamp": c.req.header("webhook-timestamp") ?? "",
      "webhook-signature": c.req.header("webhook-signature") ?? ""
    };
    let webhookPayload;
    try {
      webhookPayload = validateEvent(
        requestBody,
        webhookHeaders,
        webhookSecret
      );
    } catch (error) {
      if (error instanceof WebhookVerificationError) {
        return c.json({ received: false }, { status: 403 });
      }
      throw error;
    }
    await handleWebhookPayload(webhookPayload, {
      webhookSecret,
      entitlements,
      onPayload,
      ...eventHandlers
    });
    return c.json({ received: true });
  };
};

Abhishek

Rank 1: Thread

Jul 14, 2025, 19:56

const validateEvent = (body, headers, secret) => {
    const base64Secret = Buffer.from(secret, "utf-8").toString("base64");
    const webhook = new Webhook(base64Secret);
    try {
        const parsed = webhook.verify(body, headers);
        return parseEvent(parsed);
    }
    catch (error) {
        if (error instanceof _WebhookVerificationError) {
            throw new WebhookVerificationError(error.message);
        }
        throw error;
    }
};

Kenny

Jul 14, 2025, 19:58

what does your main entry point to the function look like

Abhishek

Rank 1: Thread

Jul 14, 2025, 20:00

What do you mean?

Kenny

Jul 14, 2025, 20:00

How is this being served by appwrites function?

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