$yamlPath = "$psscriptroot\..\.vsts-ci/releasebuild.yml"

$yaml = Get-Content -Path $yamlPath

$defaults = $yaml | Select-String -Pattern '^\s* default:\s''(v\d*\.\d*\.\d*(-\w*\.\d*)?)''$'

$retryCount = 3

$retryIntervalSec = 15

function Get-ChannelMeta {

param(

[ValidateSet('Stable', 'Preview', 'Lts', 'Daily')]

[string]

$Channel = 'Stable'

)

$urlTemplate = 'https://github.com/PowerShell/PowerShell/releases/download/v{0}/powershell-{0}-osx-x64.tar.gz'

switch ($Channel) {

'Stable' {

$metadata = Invoke-RestMethod 'https://aka.ms/pwsh-buildinfo-stable' -MaximumRetryCount $retryCount -RetryIntervalSec $retryIntervalSec

}

'Lts' {

$metadata = Invoke-RestMethod 'https://aka.ms/pwsh-buildinfo-lts' -MaximumRetryCount $retryCount -RetryIntervalSec $retryIntervalSec

}

'Preview' {

$metadata = Invoke-RestMethod 'https://aka.ms/pwsh-buildinfo-preview' -MaximumRetryCount $retryCount -RetryIntervalSec $retryIntervalSec

}

'Daily' {

$metadata = Invoke-RestMethod 'https://aka.ms/pwsh-buildinfo-Daily' -MaximumRetryCount $retryCount -RetryIntervalSec $retryIntervalSec

$urlTemplate = "https://pscoretestdata.blob.core.windows.net/$($metadata.blobname)/powershell-{0}-osx-x64.tar.gz"

}

default {

throw "Invalid channel: $Channel"

}

}

return [PSCustomObject]@{

MetaData = $metadata

UrlTemplate = $urlTemplate

}

}

$updated = $false

foreach ($default in $defaults) {

Write-Verbose "Updating $default" -Verbose

$existingReleaseTag = $default.Matches.groups[1]

$channel = switch -Regex ($existingReleaseTag) {

('^v7\.[02468]\.\d+$') {

"LTS"

# Don't also match stable

continue

}

('^v7\.\d+.\d+$') {

"Stable"

}

('^v.*-(preview|rc)\.\d*') {

"Preview"

}

default {

throw "Don't know the channel for $existingReleaseTag"

}

}

$meta = Get-ChannelMeta -Channel $channel

$newReleaseTag = $meta.metadata.ReleaseTag

$existingReleaseTagRegEx = [regex]::Escape($existingReleaseTag)

if ($existingReleaseTag.ToString() -ne $newReleaseTag.ToString()) {

[System.Management.Automation.SemanticVersion] $existingVersion = $existingReleaseTag -replace '^v', ''

[System.Management.Automation.SemanticVersion]$newVersion = $newReleaseTag -replace '^v', ''

if ($newVersion -gt $existingVersion) {

Write-Verbose -Message "replacing '$existingReleaseTag' with '$newReleaseTag' - $($existingReleaseTag -ne $newReleaseTag)" -Verbose

$yaml = $yaml -replace $existingReleaseTagRegEx, $newReleaseTag

$updated = $true

}

else {

Write-Verbose -Message "Skipping '$existingReleaseTag' newer than $newReleaseTag" -Verbose

}

}

# @{

# ExistingReleaseTag = $existingReleaseTag

# ExpectedReleaseTag = $newReleaseTag

# Channel = $channel

# Line = $default.Line

# LineNumber = $default.LineNumber

# }

}

if ($updated) {

Write-Verbose "New Yaml (first 15 lines):" -Verbose

$yaml | Select-Object -First 15 | Write-Verbose -Verbose

Write-Verbose "Saving new yaml..." -Verbose

$yaml | Out-File -FilePath $yamlPath

}