an unfinished start on proper paypal recurring integration

app/webhooks.rb

@@ -0,0 +1,56 @@
+post '/webhooks/paypal' do
+  EmailWorker.perform_async({
+    from: 'web@neocities.org',
+    to: 'errors@neocities.org',
+    subject: "[Neocities Paypal Webhook] Received a Webhook from Paypal",
+    body: params.inspect,
+    no_footer: true
+  })
+
+  'ok'
+end
+
+post '/webhooks/stripe' do
+  event = JSON.parse request.body.read
+  if event['type'] == 'customer.created'
+    username  = event['data']['object']['description'].split(' - ').first
+    email     = event['data']['object']['email']
+
+    EmailWorker.perform_async({
+      from:    'web@neocities.org',
+      to:      'contact@neocities.org',
+      subject: "[Neocities] New customer: #{username}",
+      body:    "#{username}\n#{email}\n#{Site[username: username].uri}",
+      no_footer: true
+    })
+  end
+
+  if event['type'] == 'charge.failed'
+    site_id = event['data']['object']['description'].split(' - ').last
+    site = Site[site_id]
+
+    EmailWorker.perform_async({
+      from:    'web@neocities.org',
+      to:      site.email,
+      subject: "[Neocities] There was an issue charging your card",
+      body:    Tilt.new('./views/templates/email/charge_failure.erb', pretty: true).render(self)
+    })
+  end
+
+  if event['type'] == 'customer.subscription.deleted'
+    site_id = event['data']['object']['description'].split(' - ').last
+    site = Site[site_id]
+    site.stripe_subscription_id = nil
+    site.plan_type = nil
+    site.save_changes validate: false
+
+    EmailWorker.perform_async({
+      from:    'web@neocities.org',
+      to:      site.email,
+      subject: "[Neocities] Supporter plan has ended",
+      body:    Tilt.new('./views/templates/email/supporter_ended.erb', pretty: true).render(self)
+    })
+  end
+
+  'ok'
+end