OctopusDeploy Get-LatestProdReleases

<#
  .DESCRIPTION
  Gets an array of hashes where each hash contains the properties ProjectName
  and ReleaseVersion. Each is the latest release to be deployed to Production
  for this project.
#>
function Get-LatestProdReleases(
  $base_address = "http://octopus.aclens.local", 
  $apikey = "API-9W4ROZVB6M5D6OEPWJ7CDZ6RZSO")
{
  # Array to hold the results
  $latest_prod_deployments = New-Object System.Collections.ArrayList

  # Get all projects
  $projects = Invoke-RestMethod -Uri "$base_address/api/projects/all?apikey=$apikey" 

  Write-Host "Finding latest releases..."

  foreach ($project in $projects)
  {
    # Get the Default channel for the project
    $channels_path = $project.Links.Channels
    $channels_url = "${base_address}${channels_path}?apikey=$apikey"
    $channels = Invoke-RestMethod $channels_url
    $default_channel = $channels.Items.Where({ $_.IsDefault })

    # Get the releases for this channel
    $releases_path = $default_channel.Links.Releases
    $releases_url = "${base_address}${releases_path}?apikey=$apikey"
    $releases = Invoke-RestMethod $releases_url

    $break_from_release_loop = $FALSE

    foreach ($release in $releases.Items)
    {
      # Break out of the loop if we already found what we were looking for
      if ($break_from_release_loop -eq $TRUE)
      {
        break;
      }
    
      # Find out which release got deployed to Production most recently
      $progression_path = $release.Links.Progression
      $progression_url = "${base_address}${progression_path}?apikey=$apikey"
      $progressions = Invoke-RestMethod $progression_url
    
      foreach ($progression in $progressions)
      {
        $production_progressions = $progression.Phases.Where({ $_.Name -eq "Production" -and $_.Progress -eq "Complete" })

        if ($production_progressions -ne $NULL)
        {
          # Store the project name and release version in a hash and add it to our array
          $latest_prod_deployments.Add(@{ ProjectName = $project.Name; ReleaseVersion = $release.SelectedPackages[0].Version }) | Out-Null
          $break_from_release_loop = $TRUE
          break;
        }
      }
    }
  }

  # return the array of hashes
  return $latest_prod_deployments
}



# Check results
foreach ($prod_deployment in Get-LatestProdReleases)
{
  $prod_deployment.ProjectName
  $prod_deployment.ReleaseVersion
}