Public/GitHub/New-GitHubRelease.ps1

function New-GitHubRelease
{
    [CmdletBinding()]
    param
    (
        # The name of the release
        [Parameter(
            Mandatory = $true,
            Position = 0
        )]
        [string]
        $Name,

        # The tag to use for the release, should not contain any whitespace.
        [Parameter(
            Mandatory = $true,
            Position = 1
        )]
        [string]
        $Tag,

        # The description for this release
        [Parameter(
            Mandatory = $true,
            Position = 2
        )]
        [string]
        $Description,

        # The GitHub repo to create the release against
        [Parameter(
            Mandatory = $true,
            Position = 3
        )]
        [string]
        $RepoName,

        # The Organization that the repo lives in
        [Parameter(
            Mandatory = $true,
            Position = 4
        )]
        [Alias('GitHubOrganisation','GitHubOrganization')]
        [string]
        $GitHubOrg,

        # The PAT to access the repo
        [Parameter(
            Mandatory = $true
        )]
        [string]
        $GitHubToken,

        # Set if this is a prerelease
        [Parameter(
            Mandatory = $false
        )]
        [switch]
        $Prerelease,

        # The target commitish to use (if any)
        [Parameter(
            Mandatory = $false
        )]
        [string]
        $TargetCommit
    )
    if ($Tag -match '\s')
    {
        throw "Tag $Tag contains whitespace"
    }
    $Header = @{                                                                                                                                         
        Authorization = "token $GitHubToken"
        Accept        = 'application/vnd.github.v3+json'
    }
    $URI = "https://api.github.com/repos/$GitHubOrg/$RepoName/releases"
    $Body = @{
        tag_name = $Tag
        name = $Name
        body = $Description
    }
    if ($Prerelease)
    {
        $Body.Add('prerelease',$true)
    }
    if ($TargetCommit)
    {
        $Body.Add('target_commitish',$TargetCommit)
    }
    try
    {
        $BodyJSON = $Body | ConvertTo-Json
    }
    catch
    {
        Write-Error "Failed to convert PR body to JSON.`n$_.Exception.Message"
    }
    Write-Verbose "Attempting to create release $Tag at $URI"
    try
    {
        $Request = Invoke-RestMethod -Headers $Header -Uri $URI -Body $BodyJSON -Method Post
    }
    catch
    {
        Write-Error $_.Exception.Message
    }
    Return $Request
}