Class: MalawiHivProgramReports::Clinic::PatientsOnTreatment

Inherits:
Object
  • Object
show all
Defined in:
app/services/malawi_hiv_program_reports/clinic/patients_on_treatment.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(start_date:, end_date:) ⇒ PatientsOnTreatment

Returns a new instance of PatientsOnTreatment.



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# File 'app/services/malawi_hiv_program_reports/clinic/patients_on_treatment.rb', line 11

def initialize(start_date:, end_date:)
  @start_date = start_date
  @end_date = end_date
end

Instance Attribute Details

#end_date ⇒ Object (readonly)

Returns the value of attribute end_date.



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# File 'app/services/malawi_hiv_program_reports/clinic/patients_on_treatment.rb', line 9

def end_date
  @end_date
end

#start_date ⇒ Object (readonly)

Returns the value of attribute start_date.



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# File 'app/services/malawi_hiv_program_reports/clinic/patients_on_treatment.rb', line 9

def start_date
  @start_date
end

Class Method Details

.within(start_date, end_date) ⇒ Object

Returns patients that were on treatment within the given time period.



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# File 'app/services/malawi_hiv_program_reports/clinic/patients_on_treatment.rb', line 17

def self.within(start_date, end_date)
  sql_conditions =
    <<~SQL
      ((start_date >= :start_date AND start_date <= :end_date)
        OR (end_date >= :start_date AND end_date <= :end_date)
        OR (start_date < :start_date AND end_date IS NULL))
      AND state = :state
    SQL

  on_arvs = ::PatientState.where(sql_conditions, start_date:,
                                                 end_date:,
                                                 state: ::ArtService::Constants::States::ON_ANTIRETROVIRALS)

  ::PatientProgram.select('DISTINCT patient_program.patient_id')
                  .joins(:patient_states)
                  .merge(on_arvs)
                  .where(program_id: ::ArtService::Constants::PROGRAM_ID)
end

Instance Method Details

#find_report ⇒ Object

We an interface to satisfy, let’s be good citizens



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# File 'app/services/malawi_hiv_program_reports/clinic/patients_on_treatment.rb', line 37

def find_report
  within(start_date, end_date).map(&:patient_id)
end