feat: update document doc

enterprise/app/models/captain/document.rb

@@ -27,8 +27,10 @@ class Captain::Document < ApplicationRecord
   has_many :responses, class_name: 'Captain::AssistantResponse', dependent: :destroy, as: :documentable
   belongs_to :account
 
-  validates :external_link, presence: true
-  validates :external_link, uniqueness: { scope: :assistant_id }
+  validates :external_link, presence: true, if: :web?
+  validates :external_link, uniqueness: { scope: :assistant_id }, if: :web?
+  validates :external_id, presence: true, if: :notion?
+  validates :external_id, uniqueness: { scope: [:assistant_id, :document_type] }, allow_nil: true
   validates :content, length: { maximum: 200_000 }
   before_validation :ensure_account_id
 
@@ -37,6 +39,11 @@ class Captain::Document < ApplicationRecord
     available: 1
   }
 
+  enum document_type: {
+    web: 0,
+    notion: 1
+  }
+
   before_create :ensure_within_plan_limit
   after_create_commit :enqueue_crawl_job
   after_create_commit :update_document_usage