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Find all parent flows that invoke the specified child flow

Author: Michał Kornet

This script

  $m365Status = m365 status --output text
  if ($m365Status -eq "Logged Out") {
      m365 login
  }

  $environment = 'Default-dc109ffd-4298-487e-xxxx-6b9b1a2cd3e2'
  $childFlowId = 'e5a842f3-f5ac-ed0c-xxxx-c8df2af79fb3'

  $childFlow = m365 flow get --name $childFlowId --environmentName $environment --output json | ConvertFrom-Json 
  $workflowEntityId = $childFlow.properties.workflowEntityId

  if (!$childFlow) {
      Write-Host "Child flow not found try different environment or id"
      exit
  }

  if ($childFlow.properties.definitionSummary.triggers[0].type -ne 'Request' -or $childFlow.properties.definitionSummary.triggers[0].kind -ne "Button") {
      Write-Host "Child flow has incorrect trigger"
      exit
  }

  $flows = m365 flow list --environmentName $environment --output json | ConvertFrom-Json

  foreach ($flow in $flows) {
      $displayName = $flow.properties.displayName
      $id = $flow.name
      $hasWorkflowAction = $false
      
      foreach ($action in $flow.properties.definitionSummary.actions) {
          if ($action.type -eq 'Workflow') {
              $hasWorkflowAction = $true
              break
          }
      }

      if ($hasWorkflowAction) {
          $flowDetails = m365 flow get --name $id --environmentName $environment --output json | ConvertFrom-Json

          $flowDetails.properties.definition.actions | Get-Member -MemberType Properties | ForEach-Object {
              $property = $_.Name
              $detailedAction = $flowDetails.properties.definition.actions.$property

              if ($detailedAction.type -eq 'Workflow' -and $detailedAction.inputs.host.workflowReferenceName -eq $workflowEntityId) {
                  $previousActions = $detailedAction.runAfter;
                  $previousActionNames = ""

                  $previousActions | Get-Member -MemberType Properties | ForEach-Object {
                      $previousActionNames += $_.Name + ", "
                  }

                  Write-Host "$displayName -> $id -> before: $previousActionNames"
              }
          }
      }
  }

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