class MaintenanceEntry < ApplicationRecord
  belongs_to :vehicle
  belongs_to :updated_by_user, class_name: "User"

  validates :name, :notes, :date, presence: true
  validates :odometer, presence: true, numericality: { only_integer: true, greater_than_or_equal_to: 0 }
  validates :cost, presence: true, numericality: { greater_than_or_equal_to: 0 }
  validate :date_cannot_be_in_the_future
  validate :name_matches_vehicle_schedule

  private

  def date_cannot_be_in_the_future
    return if date.blank? || date <= Date.current

    errors.add(:date, "can't be in the future")
  end

  def name_matches_vehicle_schedule
    return if vehicle.blank? || name.blank?

    scheduled = vehicle.maintenance_schedules.any? do |schedule|
      schedule.active? && schedule.maintenance_type.casecmp?(name)
    end
    scheduled ||= vehicle.maintenance_schedules.active.where("lower(maintenance_type) = ?", name.downcase).exists? if vehicle.persisted?
    return if scheduled

    errors.add(:name, "must match a maintenance schedule for the vehicle")
  end
end