Private/Send-MessageWithAttachment.ps1
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function Send-MessageWithAttachment { <# .SYNOPSIS Sends an HTTP POST to the Pushover API using an HttpClient .DESCRIPTION When sending an image attachment with a Pushover message, you must use multipart/form-data and there doesn't seem to be a nice way to do this using Invoke-RestMethod like we're doing in the public Send-Message function. So when an attachment is provided to Send-Message, the body hashtable is constructed, and then sent over to this function to keep the main Send-Message function a manageable size. #> [CmdletBinding()] param ( # Specifies the various parameters and values expected by the Pushover messages api. [Parameter(Mandatory)] [hashtable] $Body, # Specifies the image to attach to the message as a byte array [Parameter(Mandatory)] [byte[]] $Attachment, # Optionally specifies a file name to associate with the attachment [Parameter()] [string] $FileName = 'attachment.jpg' ) begin { $uri = $script:PushoverApiUri + '/messages.json' } process { try { $client = [system.net.http.httpclient]::new() try { $content = [system.net.http.multipartformdatacontent]::new() foreach ($key in $Body.Keys) { $textContent = [system.net.http.stringcontent]::new($Body.$key) $content.Add($textContent, $key) } $jpegContent = [system.net.http.bytearraycontent]::new($Attachment) $jpegContent.Headers.ContentType = [system.net.http.headers.mediatypeheadervalue]::new('image/jpeg') $jpegContent.Headers.ContentDisposition = [system.net.http.headers.contentdispositionheadervalue]::new('form-data') $jpegContent.Headers.ContentDisposition.Name = 'attachment' $jpegContent.Headers.ContentDisposition.FileName = $FileName $content.Add($jpegContent) Write-Verbose "Message body:`r`n$($content.ReadAsStringAsync().Result.Substring(0, 2000).Replace($Body.token, "********").Replace($Body.user, "********"))" $result = $client.PostAsync($uri, $content).Result Write-Output ($result.Content.ReadAsStringAsync().Result | ConvertFrom-Json) } finally { $content.Dispose() } } finally { $client.Dispose() } } } |