change-alias-record-routing-policy-latency-to-simple.ps1

param (
    [string[]]
    $ids
)

foreach ($id in $ids) {
    $before = Get-R53ResourceRecordSet -HostedZoneId $id | Select-Object -ExpandProperty ResourceRecordSets | Where-object -FilterScript { $_.Type -eq 'A' -and $_.Region }
    if (!$before) {
        Write-Error "$id is not target hosted zone id."
        exit 1
    }
    # changeset to remove a alias record of latency routing policy.
    $del = New-Object Amazon.Route53.Model.Change ([Amazon.Route53.ChangeAction]::DELETE, $before)

    # changeset to create a alias record of simple routing policy that copied value from existing alias record.
    $after = New-Object Amazon.Route53.Model.ResourceRecordSet
    $after.Name = $before.Name
    $after.Type = $before.Type
    $after.AliasTarget = $before.AliasTarget
    $cre = New-Object Amazon.Route53.Model.Change ([Amazon.Route53.ChangeAction]::CREATE, $after)

    Edit-R53ResourceRecordSet -HostedZoneId $id -ChangeBatch_Change $del, $cre
}