Public/Send-SlackFile.ps1
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function Send-SlackFile { <# .SYNOPSIS Send a Slack file .DESCRIPTION Send a Slack file .PARAMETER Token Token to use for the Slack API Default value is the value set by Set-PSSlackConfig .PARAMETER Content Content of the file to send. Text is editable after sending. .Parameter FileType If specified, override the FileType determined by the filename. List of types: https://api.slack.com/types/file#file_types .PARAMETER Channel Optional channel, private group, or IM channel to send file to. Can be an encoded ID, or a name. .PARAMETER FileName Required filename for this file. Used to determine syntax highlighting and other functionality. .PARAMETER Title Optional title of the file .PARAMETER Comment Optional initial comment for the file .EXAMPLE Send-SlackFile -Token $Token ` -Channel general ` -Content 'get-help about_* | get-random' ` -FileType perl ` -filename example.ps1 # Send a slack file that turns into a snippet. # Use perl, because PowerShell syntax highlighting is sad .EXAMPLE Send-SlackFile -Channel '@wframe' ` -path C:\homer.gif ` -title homer # Send a gif to @wframe using a previously-stored token (Set-PSSlackConfig) .FUNCTIONALITY Slack #> [cmdletbinding(DefaultParameterSetName = 'Content')] param ( [string]$Token = $Script:PSSlack.Token, [parameter(ParameterSetName = 'Content', Mandatory = $True)] [string]$Content, [validatescript({Test-Path -PathType Leaf -Path $_})] [parameter(ParameterSetName = 'File', Mandatory = $True)] [string]$Path, [parameter(ParameterSetName = 'Content')] [string]$FileType, [string[]]$Channel, [string]$FileName, [String]$Title, [String]$Comment ) process { if ($Content) { $body = @{} switch ($psboundparameters.keys) { 'Content' {$body.content = $content} 'Channel' {$body.channels = $Channel -join ", " } 'FileName' {$body.filename = $FileName} 'Title' {$body.Title = $Title} 'Comment' {$body.initial_comment = $Comment} 'FileType' {$body.filetype = $FileType} } Write-Verbose "Send-SlackApi -Body $($body | Format-List | Out-String)" $response = Send-SlackApi -Method files.upload -Body $body -Token $Token } else { $fileName = (Split-Path -Path $Path -Leaf) $uri = 'https://slack.com/api/files.upload' if ($IsCoreCLR) { # PowerShell Core implementation $multipartContent = [System.Net.Http.MultipartFormDataContent]::new() # Add file contents $fileHeader = [System.Net.Http.Headers.ContentDispositionHeaderValue]::new('form-data') $fileHeader.Name = 'file' $fileHeader.FileName = $FileName $fileStream = [System.IO.FileStream]::new($Path, [System.IO.FileMode]::Open) $fileContent = [System.Net.Http.StreamContent]::new($fileStream) $fileContent.Headers.ContentDisposition = $fileHeader $fileContent.Headers.ContentType = [System.Net.Http.Headers.MediaTypeHeaderValue]::Parse('multipart/form-data') $multipartContent.Add($fileContent) # Add token $tokenHeader = [System.Net.Http.Headers.ContentDispositionHeaderValue]::new('form-data') $tokenHeader.Name = 'token' $tokenContent = [System.Net.Http.StringContent]::new($token) $tokenContent.Headers.ContentDisposition = $tokenHeader $multipartContent.Add($tokenContent) switch ($psboundparameters.keys) { 'Channel' { # Add channel $channelHeader = [System.Net.Http.Headers.ContentDispositionHeaderValue]::new('form-data') $channelHeader.Name = 'channels' $channelContent = [System.Net.Http.StringContent]::new(($Channel -join ', ')) $channelContent.Headers.ContentDisposition = $channelHeader $multipartContent.Add($channelContent) } 'FileName' { # Add file name $filenameHeader = [System.Net.Http.Headers.ContentDispositionHeaderValue]::new('form-data') $filenameHeader.Name = 'filename' $filenameContent = [System.Net.Http.StringContent]::new($FileName) $filenameContent.Headers.ContentDisposition = $filenameHeader $multipartContent.Add($filenameContent) } 'Title' { # Add title $titleHeader = [System.Net.Http.Headers.ContentDispositionHeaderValue]::new('form-data') $titleHeader.Name = 'title' $titleContent = [System.Net.Http.StringContent]::new($Title) $titleContent.Headers.ContentDisposition = $titleHeader $multipartContent.Add($titleContent) } 'Comment' { # Add comment $commentHeader = [System.Net.Http.Headers.ContentDispositionHeaderValue]::new('form-data') $commentHeader.Name = 'initial_comment' $commentContent = [System.Net.Http.StringContent]::new($Comment) $commentContent.Headers.ContentDisposition = $commentHeader $multipartContent.Add($commentContent) } } try { $response = Invoke-RestMethod -Uri $uri -Method Post -Body $multipartContent } catch [System.Net.WebException] { Write-Error( "Rest call failed for $uri`: $_" ) throw $_ } finally { $fileStream.Close() } } else { # Legacy Windows PowerShell implementation $LF = "`r`n" $readFile = [System.IO.File]::ReadAllBytes($Path) $enc = [System.Text.Encoding]::GetEncoding("iso-8859-1") $fileEnc = $enc.GetString($readFile) $boundary = [System.Guid]::NewGuid().ToString() $bodyLines = "--$boundary$LF" + "Content-Disposition: form-data; name=`"file`"; filename=`"$fileName`"$LF" + "Content-Type: 'multipart/form-data'$LF$LF" + "$fileEnc$LF" + "--$boundary$LF" + "Content-Disposition: form-data; name=`"token`"$LF" + "Content-Type: 'multipart/form-data'$LF$LF" + "$token$LF" switch ($psboundparameters.keys) { 'Channel' {$bodyLines += ("--$boundary$LF" + "Content-Disposition: form-data; name=`"channels`"$LF" + "Content-Type: multipart/form-data$LF$LF" + ($Channel -join ", ") + $LF)} 'FileName' {$bodyLines += ("--$boundary$LF" + "Content-Disposition: form-data; name=`"filename`"$LF" + "Content-Type: multipart/form-data$LF$LF" + "$FileName$LF")} 'Title' {$bodyLines += ("--$boundary$LF" + "Content-Disposition: form-data; name=`"title`"$LF" + "Content-Type: multipart/form-data$LF$LF" + "$Title$LF")} 'Comment' {$bodyLines += ("--$boundary$LF" + "Content-Disposition: form-data; name=`"initial_comment`"$LF" + "Content-Type: multipart/form-data$LF$LF" + "$Comment$LF")} } $bodyLines += "--$boundary--$LF" try { $response = Invoke-RestMethod -Uri $uri -Method Post -ContentType "multipart/form-data; boundary=`"$boundary`"" -Body $bodyLines } catch [System.Net.WebException] { Write-Error( "Rest call failed for $uri`: $_" ) throw $_ } } } $response } } |