Handling Stripe Webhooks

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// Follow this setup guide to integrate the Deno language server with your editor:
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// https://deno.land/manual/getting_started/setup_your_environment
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// This enables autocomplete, go to definition, etc.
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import Stripe from 'npm:stripe@^22'
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import { withSupabase } from 'npm:@supabase/server@^1'
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const stripe = new Stripe(Deno.env.get('STRIPE_API_KEY') as string)
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// This is needed in order to use the Web Crypto API in Deno.
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const cryptoProvider = Stripe.createSubtleCryptoProvider()
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console.log('Hello from Stripe Webhook!')
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// Stripe verifies the request via its signature, so deploy with verify_jwt = false.
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export default {
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  fetch: withSupabase({ auth: 'none' }, async (req) => {
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    const signature = req.headers.get('Stripe-Signature')
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    // First step is to verify the event. The .text() method must be used as the
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    // verification relies on the raw request body rather than the parsed JSON.
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    const body = await req.text()
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    let receivedEvent
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    try {
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      receivedEvent = await stripe.webhooks.constructEventAsync(
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        body,
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        signature!,
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        Deno.env.get('STRIPE_WEBHOOK_SIGNING_SECRET')!,
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        undefined,
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        cryptoProvider
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      )
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    } catch (err) {
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      return new Response(err.message, { status: 400 })
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    }
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    console.log(`🔔 Event received: ${receivedEvent.id}`)
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    return Response.json({ ok: true })
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  }),
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}