Public/Request-ImageGeneration.ps1
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function Request-ImageGeneration { [CmdletBinding(DefaultParameterSetName = 'Format')] param ( [Parameter(Mandatory, Position = 0, ValueFromPipeline)] [ValidateNotNullOrEmpty()] [string]$Prompt, [Parameter()] [Completions( 'dall-e-2', 'dall-e-3' )] [string]$Model = 'dall-e-2', [Parameter()] [ValidateRange(1, 10)] [Alias('n')] [uint16]$NumberOfImages = 1, [Parameter()] [ValidateSet('256', '512', '1024', '256x256', '512x512', '1024x1024', '1792x1024', '1024x1792')] [string]$Size = '1024x1024', [Parameter()] [ValidateSet('standard', 'hd')] [string][LowerCaseTransformation()]$Quality = 'standard', [Parameter()] [ValidateSet('vivid', 'natural')] [string][LowerCaseTransformation()]$Style = 'vivid', [Parameter(ParameterSetName = 'Format')] [Alias('response_format')] [ValidateSet('url', 'base64', 'byte', 'raw_response')] [string]$Format = 'url', [Parameter(ParameterSetName = 'OutFile', Mandatory)] [ValidateNotNullOrEmpty()] [string]$OutFile, [Parameter()] [string]$User, [Parameter()] [int]$TimeoutSec = 0, [Parameter()] [OpenAIApiType]$ApiType = [OpenAIApiType]::OpenAI, [Parameter()] [System.Uri]$ApiBase, [Parameter(DontShow)] [string]$ApiVersion, [Parameter()] [ValidateSet('openai', 'azure', 'azure_ad')] [string]$AuthType = 'openai', [Parameter()] [ValidateRange(0, 100)] [int]$MaxRetryCount = 0, [Parameter()] [securestring][SecureStringTransformation()]$ApiKey, [Parameter()] [Alias('OrgId')] [string]$Organization, [Parameter()] [System.Collections.IDictionary]$AdditionalQuery, [Parameter()] [System.Collections.IDictionary]$AdditionalHeaders, [Parameter()] [object]$AdditionalBody ) begin { # Get API context $OpenAIParameter = Get-OpenAIAPIParameter -EndpointName 'Image.Generation' -Parameters $PSBoundParameters -Engine $Model -ErrorAction Stop } process { if ($NumberOfImages -gt 1) { if ($PSCmdlet.ParameterSetName -eq 'OutFile') { $NumberOfImages = 1 } elseif ($Format -eq 'byte') { Write-Error -Message "When the format is specified as $Format, NumberOfImages should be 1." return } } # Parse Size property if ($PSBoundParameters.ContainsKey('Size') -and ($num = $Size -as [int])) { $Size = ('{0}x{0}' -f $num) } #region Construct parameters for API request $PostBody = [System.Collections.Specialized.OrderedDictionary]::new() $PostBody.prompt = $Prompt if ($NumberOfImages -ge 1) { $PostBody.n = $NumberOfImages } if ($null -ne $Size) { $PostBody.size = $Size } switch ($Format) { { $PSCmdlet.ParameterSetName -eq 'OutFile' } { $PostBody.response_format = 'url' break } 'url' { $PostBody.response_format = 'url' break } 'base64' { $PostBody.response_format = 'b64_json' break } 'byte' { $PostBody.response_format = 'b64_json' break } } if ($OpenAIParameter.ApiType -eq [OpenAIApiType]::OpenAI) { if ($PSBoundParameters.ContainsKey('Model')) { $PostBody.model = $Model } } if ($PSBoundParameters.ContainsKey('Quality')) { $PostBody.quality = $Quality } if ($PSBoundParameters.ContainsKey('Style')) { $PostBody.style = $Style } #endregion #region Send API Request $splat = @{ Method = $OpenAIParameter.Method Uri = $OpenAIParameter.Uri ContentType = $OpenAIParameter.ContentType TimeoutSec = $OpenAIParameter.TimeoutSec MaxRetryCount = $OpenAIParameter.MaxRetryCount ApiKey = $OpenAIParameter.ApiKey AuthType = $OpenAIParameter.AuthType Organization = $OpenAIParameter.Organization Body = $PostBody AdditionalQuery = $AdditionalQuery AdditionalHeaders = $AdditionalHeaders AdditionalBody = $AdditionalBody } $Response = Invoke-OpenAIAPIRequest @splat # error check if ($null -eq $Response) { return } #endregion #region Parse response object if ($Format -eq 'raw_response') { Write-Output $Response return } try { $Response = $Response | ConvertFrom-Json -ErrorAction Stop } catch { Write-Error -Exception $_.Exception } if ($null -ne $Response.data) { $ResponseContent = $Response.data } #endregion #region Output if ($PSCmdlet.ParameterSetName -eq 'OutFile') { $AbsoluteOutFile = New-ParentFolder -File $OutFile # Download image $ResponseContent | Select-Object -ExpandProperty 'url' | Select-Object -First 1 | ForEach-Object { Write-Verbose ('Downloading image to {0}' -f $AbsoluteOutFile) $splat = @{ Uri = $_ Method = 'Get' OutFile = $AbsoluteOutFile UseBasicParsing = $true } Microsoft.PowerShell.Utility\Invoke-WebRequest @splat } } elseif ($Format -eq 'url') { Write-Output ($ResponseContent | Select-Object -ExpandProperty 'url') } elseif ($Format -eq 'base64') { Write-Output ($ResponseContent | Select-Object -ExpandProperty 'b64_json') } elseif ($Format -eq 'byte') { [byte[]]$b = [Convert]::FromBase64String(($ResponseContent | Select-Object -ExpandProperty 'b64_json' | Select-Object -First 1)) Write-Output (, $b) } #endregion } end { } } |