class AddSimpleEventNormalization < ActiveRecord::Migration[8.1]
  def change
    # Add foreign key for hosts (most valuable normalization)
    add_column :events, :request_host_id, :integer
    add_foreign_key :events, :request_hosts
    add_index :events, :request_host_id

    # Add path segment storage as string for LIKE queries
    add_column :events, :request_segment_ids, :string
    add_index :events, :request_segment_ids

    # Add composite index for common WAF queries using enums
    add_index :events, [:request_host_id, :request_method, :request_segment_ids], name: 'idx_events_host_method_path'
  end
end