def buildBody()

in lib/holiday-stops/src/main/scala/com/gu/salesforce/holiday_stops/SalesforceHolidayStopRequest.scala [285:348]
61 lines of code
3 McCabe index (conditional complexity)

    def buildBody(
        holidayStopRequestId: HolidayStopRequestId,
        startDate: LocalDate,
        endDate: LocalDate,
        issuesData: List[IssueData],
        existingPublicationsThatWereToBeStopped: List[HolidayStopRequestsDetail],
    ): Either[String, CompositeRequest] = {

      val masterRecordToBePatched = CompositePart(
        method = "PATCH",
        url = s"$holidayStopRequestSfObjectsBaseUrl/${holidayStopRequestId.value}",
        referenceId = holidayStopRequestSfObjectRef, // constant since only one of these in the request
        body = Json.toJson(
          AmendHolidayStopRequestItselfBody(
            Start_Date__c = HolidayStopRequestStartDate(startDate),
            End_Date__c = HolidayStopRequestEndDate(endDate),
          ),
        )(Json.writes[AmendHolidayStopRequestItselfBody]),
      )

      val detailRecordsToBeAdded = issuesData
        .filterNot(issueData =>
          existingPublicationsThatWereToBeStopped.exists(_.Stopped_Publication_Date__c.value == issueData.issueDate),
        )
        .map { issueData =>
          CompositePart(
            method = "POST",
            url = s"$sfObjectsBaseUrl$HolidayStopRequestsDetailSfObjectRef",
            referenceId = s"CREATE_DETAIL_${generateId()}",
            body = Json.toJson(
              AddHolidayStopRequestDetailBody(
                Holiday_Stop_Request__c = holidayStopRequestId,
                Stopped_Publication_Date__c = issueData.issueDate,
                Estimated_Price__c = Price(issueData.credit),
                Expected_Invoice_Date__c =
                  HolidayStopRequestsDetailExpectedInvoiceDate(issueData.nextBillingPeriodStartDate),
              ),
            )(Json.writes[AddHolidayStopRequestDetailBody]),
          )
        }

      for {
        detailRecordsToBeDeleted <- existingPublicationsThatWereToBeStopped
          .filterNot(holidayStopRequestDetail =>
            issuesData.map(_.issueDate).contains(holidayStopRequestDetail.Stopped_Publication_Date__c.value),
          )
          .traverse(holidayStopRequestDetail => {
            if (holidayStopRequestDetail.Is_Actioned__c)
              Left("actioned publications cannot be deleted")
            else
              Right(
                CompositePart(
                  method = "DELETE",
                  url = s"$sfObjectsBaseUrl$HolidayStopRequestsDetailSfObjectRef/${holidayStopRequestDetail.Id.value}",
                  referenceId = s"DELETE_DETAIL_${generateId()}",
                  body = JsNull,
                ),
              )
          })
      } yield CompositeRequest(
        allOrNone = true,
        compositeRequest = masterRecordToBePatched :: detailRecordsToBeAdded ++ detailRecordsToBeDeleted,
      )
    }