class AlreadyHadNotificationSender

# File app/lib/already_had_notification_sender.rb, line 54
def self.call(...) = new(...).call

private_class_method :new

private

attr_reader :vaccination_record

delegate :patient, :programme_type, :programme, to: :vaccination_record

def academic_year = AcademicYear.current

def previous_vaccination_records
  # We need to ensure there is a deterministic order of vaccination records on
  # a child so that the :already_vaccinated_notification is sent once and only
  # once per child. Using created_at alone is not sufficient as batching
  # allows for multiple vaccination records to be created with the same
  # created_at timestamp. We chose the ID as a tie-breaker since IDs are
  # unique and sequential.
  patient.vaccination_records.where(
    "(created_at < :created_at) OR (created_at = :created_at AND id < :id)",
    created_at: vaccination_record.created_at,
    id: vaccination_record.id
  )
end

def was_already_vaccinated?
  VaccinationCriteria.new(
    programme_type:,
    academic_year:,
    patient:,
    vaccination_records: previous_vaccination_records
  ).vaccinated?
end

def is_still_eligible_for_vaccination?
  !patient.programme_status(programme, academic_year:).vaccinated?
end

# File app/lib/already_had_notification_sender.rb, line 4
def initialize(vaccination_record:)
  @vaccination_record = vaccination_record
end

# File app/lib/already_had_notification_sender.rb, line 64
  def academic_year = AcademicYear.current

  def previous_vaccination_records
    # We need to ensure there is a deterministic order of vaccination records on
    # a child so that the :already_vaccinated_notification is sent once and only
    # once per child. Using created_at alone is not sufficient as batching
    # allows for multiple vaccination records to be created with the same
    # created_at timestamp. We chose the ID as a tie-breaker since IDs are
    # unique and sequential.
    patient.vaccination_records.where(
      "(created_at < :created_at) OR (created_at = :created_at AND id < :id)",
      created_at: vaccination_record.created_at,
      id: vaccination_record.id
    )
  end

  def was_already_vaccinated?
    VaccinationCriteria.new(
      programme_type:,
      academic_year:,
      patient:,
      vaccination_records: previous_vaccination_records
    ).vaccinated?
  end

  def is_still_eligible_for_vaccination?
    !patient.programme_status(programme, academic_year:).vaccinated?
  end
end

# File app/lib/already_had_notification_sender.rb, line 8
def call
  return if vaccination_record.sourced_from_service?
  return if was_already_vaccinated?
  return if is_still_eligible_for_vaccination?

  consents = patient.consents.includes(:parent, :team)

  consents =
    consents.where(
      "patient_already_vaccinated_notification_sent_at < ?",
      vaccination_record.created_at
    ).or(
      consents.where(
        "patient_already_vaccinated_notification_sent_at IS NULL"
      )
    )

  parents_with_consent =
    NotificationParentSelector.new(
      vaccination_record:,
      consents:
    ).parents_with_consent

  parents_with_consent.each do |parent, consent|
    if parent.phone_receive_updates
      SMSDeliveryJob.perform_later(
        :vaccination_already_had,
        parent:,
        vaccination_record:,
        consent:
      )
    end

    EmailDeliveryJob.perform_later(
      :vaccination_already_had,
      parent:,
      vaccination_record:,
      consent:
    )

    consent.update!(
      patient_already_vaccinated_notification_sent_at: Time.current
    )
  end
end

# File app/lib/already_had_notification_sender.rb, line 89
def is_still_eligible_for_vaccination?
  !patient.programme_status(programme, academic_year:).vaccinated?
end

# File app/lib/already_had_notification_sender.rb, line 66
def previous_vaccination_records
  # We need to ensure there is a deterministic order of vaccination records on
  # a child so that the :already_vaccinated_notification is sent once and only
  # once per child. Using created_at alone is not sufficient as batching
  # allows for multiple vaccination records to be created with the same
  # created_at timestamp. We chose the ID as a tie-breaker since IDs are
  # unique and sequential.
  patient.vaccination_records.where(
    "(created_at < :created_at) OR (created_at = :created_at AND id < :id)",
    created_at: vaccination_record.created_at,
    id: vaccination_record.id
  )
end

# File app/lib/already_had_notification_sender.rb, line 80
def was_already_vaccinated?
  VaccinationCriteria.new(
    programme_type:,
    academic_year:,
    patient:,
    vaccination_records: previous_vaccination_records
  ).vaccinated?
end