public/Update-DockerImageVariantsVersions.ps1

function Update-DockerImageVariantsVersions {
    [CmdletBinding(DefaultParameterSetName='Default')]
    param (
        [Parameter(Mandatory,ParameterSetName='Default',Position=0)]
        [ValidateNotNullOrEmpty()]
        [System.Collections.Specialized.OrderedDictionary]$VersionsChanged
    ,
        [Parameter(HelpMessage="Whether to perform a dry run (skip writing versions.json")]
        [Parameter(ParameterSetName='Default')]
        [Parameter(ParameterSetName='Pipeline')]
        [switch]$DryRun
    ,
        [Parameter(HelpMessage="Whether to open a PR for each updated version in version.json")]
        [Parameter(ParameterSetName='Default')]
        [Parameter(ParameterSetName='Pipeline')]
        [switch]$PR
    ,
        [Parameter(HelpMessage="Whether to merge each PR one after another (note that this is not GitHub merge queue which cannot handle merge conflicts). The queue ensures each PR is rebased to prevent merge conflicts.")]
        [Parameter(ParameterSetName='Default')]
        [Parameter(ParameterSetName='Pipeline')]
        [switch]$AutoMergeQueue
    ,
        [Parameter(ValueFromPipeline,ParameterSetName='Pipeline')]
        [ValidateNotNullOrEmpty()]
        [System.Collections.Specialized.OrderedDictionary]$InputObject
    )

    if ($InputObject) {
        $VersionsChanged = $InputObject
    }

    $prs = @()
    foreach ($vc in $VersionsChanged.Values) {
        if ($vc['kind'] -eq 'new') {
            "New: $( $vc['to'] )" | Write-Host -ForegroundColor Green
            $versions = @(
                $vc['to']
                Get-DockerImageVariantsVersions
            )
            if (!$DryRun) {
                Set-DockerImageVariantsVersions -Versions $versions
                if ($PR) {
                    $prs += New-DockerImageVariantsPR -Version $vc['to'] -Verb add
                }
            }
        }elseif ($vc['kind'] -eq 'update') {
            $versions = [System.Collections.ArrayList]@()
            foreach ($v in (Get-DockerImageVariantsVersions)) {
                if ($v -eq $vc['from']) {
                    "Update: $( $vc['from'] ) to $( $vc['to'] )" | Write-Host -ForegroundColor Green
                    $versions.Add($vc['to']) > $null
                }else {
                    $versions.Add($v) > $null
                }
            }
            if (!$DryRun) {
                Set-DockerImageVariantsVersions -Versions $versions
                if ($PR) {
                    $prs += New-DockerImageVariantsPR -Version $vc['from'] -VersionNew $vc['to'] -Verb update
                }
            }
        }
    }

    if (!$DryRun -and $PR -and $AutoMergeQueue) {
        $autoMergeResults = [ordered]@{
            AllPRs = @()
            FailPRNumbers = @()
            FailCount = 0
        }
        for ($i = 0; $i -lt $prs.Count; $i++) {
            $_pr = $prs[$i]
            try {
                "Will automerge PR #$( $_pr.number )" | Write-Host -ForegroundColor Green
                $autoMergeResults['AllPRs'] += Automerge-DockerImageVariantsPR -PR $_pr
                "Automerge succeeded for PR #$( $_pr.number )" | Write-Host -ForegroundColor Green
            }catch {
                "Automerge failed for PR #$( $_pr.number )" | Write-Warning
                $autoMergeResults['AllPRs'] += $_pr
                $autoMergeResults['FailPRNumbers'] += $prs[$i].number
                $autoMergeResults['FailCount']++
            }
        }
        if ($autoMergeResults['FailCount']) {
            $msg = "$( $autoMergeResults['FailCount'] ) PRs failed to merge. PRs: $( ($autoMergeResults['PRs'] | % { "#$_" }) -join ', ' )"
            if ($ErrorActionPreference -eq 'Stop') {
                throw $msg
            }
            if ($ErrorActionPreference -eq 'Continue') {
                $msg | Write-Error
            }
        }
        $autoMergeResults   # Return the results
    }else {
        ,$prs
    }
}