Upload Release Artifact By Tag Name

UploadReleaseArtifact.ps1

# Upload Release Artifact By Tag Name
# If the release doesn't exist it is created
# https://developer.github.com/v3/repos/releases/#upload-a-release-asset
$tagName = "test"
$owner = "leachdaniel"
$repo = "TestGitHubApi"
$gitHubBaseUri = "https://api.github.com"
$filePath = "T:\files.zip"
$fileContentType = "application/zip"
$apiToken = $env:GITHUBAPITOKEN
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12

$releaseByTagUri = "$gitHubBaseUri/repos/$owner/$repo/releases/tags/$tagName"

$base64AuthInfo = [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes(("leachdaniel:$apiToken")))
$headers = @{Authorization=("Basic $base64AuthInfo")}

try {
    $release = Invoke-WebRequest -Uri $releaseByTagUri -Method GET -Headers $headers -UseBasicParsing
}
catch {
   if ($_.Exception.Response.StatusCode -eq 404) {
       Write-Host "Didn't exist creating..."

        $body = @{
            tag_name = $tagName
            name = $tagName
            body = ("Release " + $tagName)
            draft = $false
            prerelease = $false
        }
        $createReleaseUrl = "$gitHubBaseUri/repos/$owner/$repo/releases"

        $release = Invoke-WebRequest -Uri $createReleaseUrl -Method Post -Headers $headers -Body (ConvertTo-Json $body) -UseBasicParsing
   }
   else {
       throw
       exit 1;
   }
}

# assets_url       : https://api.github.com/repos/leachdaniel/TestGitHubApi/releases/9826535/assets
# upload_url       : https://uploads.github.com/repos/leachdaniel/TestGitHubApi/releases/9826535/assets{?name,label}


$upload_url = (($release.Content | ConvertFrom-Json).upload_url.Replace("{?name,label}",""))
$uri = "$($upload_url)?name=$(Split-Path $filePath -leaf)"
# or include time specific if you have more than one with the same name
# $uri = "$($upload_url)?name=$((Get-Date -format s).Replace(":","."))_$(Split-Path $filePath -leaf)"

Write-Host "Uploading to $uri"
$body = Get-Content($filePath) -Raw
Invoke-WebRequest -Uri $uri -Method Post -ContentType $fileContentType -Body $body -Headers $headers -UseBasicParsing | Write-Host