Add create-release.ps1 script

github/create-release.ps1

@@ -0,0 +1,87 @@
+<#
+.SYNOPSIS
+Trigger runs on the workflow_dispatch event to build and upload tool packages
+
+.PARAMETER RepositoryFullName
+Required parameter. The owner and repository name. For example, 'actions/versions-package-tools'
+.PARAMETER AccessToken
+Required parameter. PAT Token to authorize
+.PARAMETER ToolVersion
+Required parameter. Version of tool
+.PARAMETER TagName
+Required parameter. The name of the release tag
+.PARAMETER ReleaseBody
+Required parameter. Text describing the contents of the release
+.PARAMETER EventType
+Required parameter. The name of the repository dispatch event
+#>
+
+param (
+    [Parameter(Mandatory)] [string] $RepositoryFullName,
+    [Parameter(Mandatory)] [string] $AccessToken,
+    [Parameter(Mandatory)] [string] $ToolVersion,
+    [Parameter(Mandatory)] [string] $TagName,
+    [Parameter(Mandatory)] [string] $ReleaseBody,
+    [Parameter(Mandatory)] [string] $EventType,
+    [UInt32] $RetryIntervalSec = 10,
+    [UInt32] $RetryCount = 5
+)
+
+Import-Module (Join-Path $PSScriptRoot "github-api.psm1")
+
+function Create-Release {
+    param (
+        [Parameter(Mandatory)] [object] $GitHubApi,
+        [Parameter(Mandatory)] [string] $ToolVersion,
+        [Parameter(Mandatory)] [string] $TagName,
+        [Parameter(Mandatory)] [string] $ReleaseBody,
+        [Parameter(Mandatory)] [string] $EventType
+    )
+
+    $eventPayload = @{
+        ToolVersion = $ToolVersion
+        TagName = $TagName
+        ReleaseBody = $ReleaseBody
+    }
+
+    Write-Host "Create '$EventType' repository dispatch event"
+    $GitHubApi.CreateRepositoryDispatch($EventType, $eventPayload)
+}
+
+function Validate-ReleaseAvailability {
+    param (
+        [Parameter(Mandatory)] [object] $GitHubApi,
+        [Parameter(Mandatory)] [string] $TagName,
+        [Parameter(Mandatory)] [UInt32] $RetryIntervalSec,
+        [Parameter(Mandatory)] [UInt32] $RetryCount
+    )
+
+    do {
+        $createdRelease = $GitHubApi.GetReleases() | Where-Object { $_.tag_name -eq $TagName }
+        if ($createdRelease) {
+            Write-Host "Release was successfully created: $($createdRelease.html_url)"
+            return
+        }
+        $RetryCount
+
+        $RetryCount--
+        Start-Sleep -Seconds $RetryIntervalSec
+    } while($RetryCount -gt 0)
+
+    Write-Host "Release was not created"
+    exit 1
+}
+
+$gitHubApi = Get-GitHubApi -RepositoryFullName $RepositoryFullName -AccessToken $AccessToken
+
+Create-Release -GitHubApi $gitHubApi `
+               -ToolVersion $ToolVersion `
+               -TagName $TagName `
+               -ReleaseBody $ReleaseBody `
+               -EventType $EventType
+
+Start-Sleep -s $RetryIntervalSec
+Validate-ReleaseAvailability -GitHubApi $gitHubApi `
+                             -TagName $TagName `
+                             -RetryIntervalSec $RetryIntervalSec `
+                             -RetryCount $RetryCount

github/github-api.psm1

@@ -83,10 +83,11 @@ class GitHubApi
         return $releases
     }
 
-    [void] DispatchWorkflow([string]$EventType) {
+    [void] CreateRepositoryDispatch([string]$EventType, [object]$EventPayload) {
         $url = "dispatches"
         $body = @{
             event_type = $EventType
+            client_payload = $EventPayload
         } | ConvertTo-Json
 
         $this.InvokeRestMethod($url, 'POST', $null, $body)