define "Initial Population":
  "Has Qualifying Encounter"
    and exists "Order for 12 Months of ADT in 3 Months Before to 9 Months After Start of Measurement Period"

define "Initial Population":
  "Has Qualifying Encounter"
    and exists "Order for 12 Months of ADT in 3 Months Before to 9 Months After Start of Measurement Period"

define "Denominator":
  "Initial Population"

define "Numerator":
  "Has Baseline DEXA Scan Two Years Prior to the Start of or Less than Three Months After the Start of ADT"

define "Denominator Exception":
  false

define "SDE Sex":
  case
    when Patient.sex = '248153007' then "Male (finding)"
    when Patient.sex = '248152002' then "Female (finding)"
    else null
  end

define "SDE Payer":
  [Coverage: type in "Payer Type"] Payer
    return {
      code: Payer.type,
      period: Payer.period
    }

define "SDE Ethnicity":
  Patient.ethnicity E
    return Tuple {
      codes: { E.ombCategory } union E.detailed,
      display: E.text
    }

define "SDE Race":
  Patient.race R
    return Tuple {
      codes: R.ombCategory union R.detailed,
      display: R.text
    }

/*
@description: Given an interval, return the starting point if the interval has a starting boundary specified,
otherwise, return the ending point
*/
define fluent function earliest(choice Choice<DateTime, Quantity, Interval<DateTime>, Interval<Quantity>> ):
  (choice.toInterval()) period
    return
      if (period."hasStart"()) then start of period
      else end of period

/*
@description: Given an interval, return true if the interval has a starting boundary specified
(i.e. the start of the interval is not null and not the minimum DateTime value)
*/
define fluent function hasStart(period Interval<DateTime> ):
  not ( start of period is null
      or start of period = minimum DateTime
  )

define "SDE Sex":
  SDE."SDE Sex"

define "Androgen Deprivation Therapy for Urology Care Medication Active Start Dates":
  [MedicationRequest: "Androgen Deprivation Therapy for Urology Care"] ADTActive
    let firstMedicationPeriod: First((collapse(ADTActive.dosageInstruction.timing.repeat.bounds DoseTime
          return DoseTime.toInterval()
      )) DrugPeriods
        sort by start of $this
    ),
    //get the very first event
    
    firstMedicationEvent: First((ADTActive.dosageInstruction.timing dosageTiming
        //returns first event for the specific dosageTiming
        
        return First(dosageTiming.event dosageTimingEvents
            sort ascending
        )) firstEvents
        sort ascending
    ),
    medicationDateTime: NormalizeInterval(firstMedicationEvent, firstMedicationPeriod).earliest ( )
    where ADTActive.status in { 'active', 'completed' }
      and ADTActive.intent in { 'order', 'original-order', 'reflex-order', 'filler-order', 'instance-order' }
    return medicationDateTime

define "Androgen Deprivation Therapy for Urology Care Medication Order Start Dates":
  [MedicationRequest: "Androgen Deprivation Therapy for Urology Care"] ADTOrder
    let firstMedicationPeriod: First((collapse(ADTOrder.dosageInstruction.timing.repeat.bounds DoseTime
          return DoseTime.toInterval()
      )) DrugPeriods
        sort by start of $this
    ),
    medicationDateTime: NormalizeInterval(ADTOrder.authoredOn, firstMedicationPeriod).earliest ( )
    where ADTOrder.status in { 'active', 'completed' }
      and ADTOrder.intent in { 'order', 'original-order', 'reflex-order', 'filler-order', 'instance-order' }
    return medicationDateTime

define "Prostate Cancer Diagnosis":
  ( [ConditionProblemsHealthConcerns: "Prostate Cancer"]
    union [ConditionEncounterDiagnosis: "Prostate Cancer"] ) ProstateCancer
    where ProstateCancer.prevalenceInterval ( ) overlaps "Measurement Period"
      and ProstateCancer.clinicalStatus ~ QICoreCommon."active"
      and ProstateCancer.verificationStatus ~ QICoreCommon."confirmed"

define "First ADT in 3 Months Before to 9 Months After Start of Measurement Period":
  First(("Androgen Deprivation Therapy for Urology Care Medication Active Start Dates"
      union "Androgen Deprivation Therapy for Urology Care Medication Order Start Dates") ADTDateTime
      with "Prostate Cancer Diagnosis" ProstateCancer
        such that ADTDateTime during day of ProstateCancer.prevalenceInterval()
          and ADTDateTime during day of Interval[start of "Measurement Period" - 3 months, start of "Measurement Period" + 9 months]
      sort ascending
  )

define "Order for 12 Months of ADT in 3 Months Before to 9 Months After Start of Measurement Period":
  [ServiceRequest: "Injection of leuprolide acetate for twelve month period (regime/therapy)"] OrderTwelveMonthADT
    with "First ADT in 3 Months Before to 9 Months After Start of Measurement Period" FirstADTMP
      such that OrderTwelveMonthADT.authoredOn on or after day of FirstADTMP
        and OrderTwelveMonthADT.authoredOn during day of Interval[start of "Measurement Period" - 3 months, start of "Measurement Period" + 9 months]
        and OrderTwelveMonthADT.status in { 'active', 'completed' }
        and OrderTwelveMonthADT.intent = 'order'
        and OrderTwelveMonthADT.doNotPerform is not true

define "Has Baseline DEXA Scan Two Years Prior to the Start of or Less than Three Months After the Start of ADT":
  exists ( ( [ServiceRequest: "DEXA Bone Density for Urology Care"] DEXAOrdered
        with "Order for 12 Months of ADT in 3 Months Before to 9 Months After Start of Measurement Period" OrderTwelveMonthsADT
          such that DEXAOrdered.authoredOn 3 months or less on or after day of OrderTwelveMonthsADT.authoredOn
            or DEXAOrdered.authoredOn 2 years or less before day of OrderTwelveMonthsADT.authoredOn
        where DEXAOrdered.status in { 'active', 'completed' }
          and DEXAOrdered.intent = 'order'
          and DEXAOrdered.doNotPerform is not true
    )
      union ( [LaboratoryResultObservation: "DEXA Bone Density for Urology Care"] DEXAPerformed
          with "Order for 12 Months of ADT in 3 Months Before to 9 Months After Start of Measurement Period" OrderTwelveMonthsADT
            such that DEXAPerformed.effective.toInterval ( ) 3 months or less on or after day of OrderTwelveMonthsADT.authoredOn
              or DEXAPerformed.effective.toInterval ( ) 2 years or less before day of OrderTwelveMonthsADT.authoredOn
          where DEXAPerformed.status in { 'final', 'amended', 'corrected' }
      )
  )

define "Numerator":
  "Has Baseline DEXA Scan Two Years Prior to the Start of or Less than Three Months After the Start of ADT"

define "Denominator Exception":
  false

define "Has Qualifying Encounter":
  exists ( ["Encounter": "Office Visit"] OfficeVisit
      where OfficeVisit.period during "Measurement Period"
        and OfficeVisit.status = 'finished'
  )

define "Initial Population":
  "Has Qualifying Encounter"
    and exists "Order for 12 Months of ADT in 3 Months Before to 9 Months After Start of Measurement Period"

define "Denominator":
  "Initial Population"

define "SDE Payer":
  SDE."SDE Payer"

define "Initial Population":
  "Has Qualifying Encounter"
    and exists "Order for 12 Months of ADT in 3 Months Before to 9 Months After Start of Measurement Period"

// @commmentedOutReason: Negation issue related to https://github.com/cqframework/cql-execution/issues/296,
  //                       which is tied to https://oncprojectracking.healthit.gov/support/browse/BONNIEMAT-1455.
  //                       Due to this being the only logic in population, created a 'false' placeholder
  // exists ( "No Bone Density Scan Ordered Due to Patient Refusal")
  //   or exists ( "No Bone Density Scan Performed Due to Patient Refusal")  






define "SDE Ethnicity":
  SDE."SDE Ethnicity"

define "SDE Race":
  SDE."SDE Race"

define function NormalizeInterval(pointInTime DateTime, dateTimeInterval Interval<DateTime>):
  if pointInTime is not null then Interval[pointInTime, pointInTime]
    else if dateTimeInterval is not null then dateTimeInterval 
    else null as Interval<DateTime>

define function ToString(value uri): value.value

/*
@description: Converts the given [Period](https://hl7.org/fhir/datatypes.html#Period)
value to a CQL DateTime Interval
@comment: If the start value of the given period is unspecified, the starting
boundary of the resulting interval will be open (meaning the start of the interval
is unknown, as opposed to interpreted as the beginning of time).
*/
define function ToInterval(period FHIR.Period):
    if period is null then
        null
    else
        if period."start" is null then
            Interval(period."start".value, period."end".value]
        else
            Interval[period."start".value, period."end".value]

/*
@description: Converts the given FHIR [Coding](https://hl7.org/fhir/datatypes.html#Coding) value to a CQL Code.
*/
define function ToCode(coding FHIR.Coding):
    if coding is null then
        null
    else
        System.Code {
          code: coding.code.value,
          system: coding.system.value,
          version: coding.version.value,
          display: coding.display.value
        }