NO-ISSUE Automate to set webhook url

Author: Yang-33

examples/v2/kitchensink/app.rb

@@ -3,7 +3,7 @@
 require 'line-bot-api'
 
 set :environment, :production
-set :app_base_url, ENV['APP_BASE_URL']
+set :app_base_url, ENV.fetch('APP_BASE_URL', nil)
 
 THUMBNAIL_URL = 'https://via.placeholder.com/1024x1024'
 HORIZONTAL_THUMBNAIL_URL = 'https://via.placeholder.com/1024x768'
@@ -39,6 +39,23 @@ def parser
   @parser ||= Line::Bot::V2::WebhookParser.new(channel_secret: ENV.fetch("LINE_CHANNEL_SECRET"))
 end
 
+configure do
+  if settings.app_base_url
+    webhook_endpoint = "#{settings.app_base_url}/callback"
+    body, code, _ = client.set_webhook_endpoint_with_http_info(set_webhook_endpoint_request: Line::Bot::V2::MessagingApi::SetWebhookEndpointRequest.new(
+      endpoint: webhook_endpoint
+    ))
+
+    if code == 200
+      p "✅ LINE Webhook URL set to #{webhook_endpoint}"
+    else
+      p "❌ Failed to set LINE Webhook. code=#{code}, error body=#{body}"
+    end
+  else
+    p "⚠️ APP_BASE_URL is not set; skipping LINE Webhook auto-configuration."
+  end
+end
+
 post '/callback' do
   body = request.body.read
   signature = request.env['HTTP_X_LINE_SIGNATURE']