Class: Notion::Webhooks::RackMiddleware

Inherits:
Object
  • Object
show all
Defined in:
lib/notion/webhooks/rack_middleware.rb

Instance Method Summary collapse

Constructor Details

#initialize(app, secret:, path: "/notion/events", &handler) ⇒ RackMiddleware

Returns a new instance of RackMiddleware.



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# File 'lib/notion/webhooks/rack_middleware.rb', line 8

def initialize(app, secret:, path: "/notion/events", &handler)
  @app = app
  @secret = secret
  @path = path
  @handler = handler
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/notion/webhooks/rack_middleware.rb', line 15

def call(env)
  return @app.call(env) unless env["PATH_INFO"] == @path && env["REQUEST_METHOD"] == "POST"

  payload = env.fetch("rack.input").read
  data = JSON.parse(payload)
  return verify_subscription(data) if data.key?("verification_token")

  valid = Signature.valid?(
    secret: @secret,
    payload: payload,
    signature: env["HTTP_X_NOTION_SIGNATURE"] || env["HTTP_NOTION_SIGNATURE"]
  )
  return [401, { "content-type" => "text/plain" }, ["invalid signature"]] unless valid

  @handler&.call(Event.new(data))
  [200, {}, []]
rescue JSON::ParserError
  [400, { "content-type" => "text/plain" }, ["invalid JSON"]]
end