class CreateMaintenanceSchedules < ActiveRecord::Migration[8.1]
  def change
    create_table :maintenance_schedules do |t|
      t.references :vehicle, null: false, foreign_key: true
      t.string :maintenance_type, null: false
      t.integer :mileage_interval, null: false
      t.integer :time_interval, null: false

      t.timestamps
    end

    add_index :maintenance_schedules,
      "vehicle_id, lower(maintenance_type)",
      unique: true,
      name: "index_maintenance_schedules_on_vehicle_and_lower_type"
  end
end