class ChatNotifications < ActiveRecord::Migration[6.1]
  def change
    remove_index :messages, name: "index_messages_on_chat_id"
    remove_column :messages, :chat_id
    remove_column :messages, :viewed
    add_reference :messages, :emisor, index: true
  	add_column :messages, :status, :string, default: "new" # new | save | hide

    drop_table :user_notifications
    drop_table :notifications
    drop_table :chats

  end
end