Webhookのメッセージをカスタマイズできるように

db/schema.sql

@@ -99,6 +99,23 @@ CREATE TRIGGER notification_methods_set_updated_at
 BEFORE UPDATE ON notification_methods
 FOR EACH ROW EXECUTE FUNCTION set_updated_at();
 
+CREATE TABLE IF NOT EXISTS user_notification_settings (
+  user_id uuid PRIMARY KEY REFERENCES users(user_id) ON DELETE CASCADE,
+  webhook_message_template text,
+  timezone text NOT NULL DEFAULT 'Asia/Tokyo',
+  created_at timestamptz NOT NULL DEFAULT now(),
+  updated_at timestamptz NOT NULL DEFAULT now()
+);
+
+ALTER TABLE user_notification_settings
+  ADD COLUMN IF NOT EXISTS webhook_message_template text,
+  ADD COLUMN IF NOT EXISTS timezone text NOT NULL DEFAULT 'Asia/Tokyo';
+
+DROP TRIGGER IF EXISTS user_notification_settings_set_updated_at ON user_notification_settings;
+CREATE TRIGGER user_notification_settings_set_updated_at
+BEFORE UPDATE ON user_notification_settings
+FOR EACH ROW EXECUTE FUNCTION set_updated_at();
+
 CREATE TABLE IF NOT EXISTS site_alert_conditions (
   site_alert_condition_id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
   site_id uuid NOT NULL REFERENCES sites(site_id) ON DELETE CASCADE,