PrivateFunctions/Set-SlackChannelTopic.ps1
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<#
.SYNOPSIS This function sets the topic of a channel in Slack. .DESCRIPTION This function sets the topic of a channel in Slack. #> function Set-SlackChannelTopic { param( [CmdletBinding(PositionalBinding=$false)] [OutputType([Bool])] # The authentication token for Slack [Parameter(Mandatory=$true)] [ValidateNotNullOrEmpty()] [String]$token, # The name of the channel to set [Parameter(Mandatory=$true)] [ValidateNotNullOrEmpty()] [String]$channelName, # The topic of the channel [Parameter(Mandatory=$true)] [ValidateNotNullOrEmpty()] [String]$topic, # Select the stream where the messages will be directed. [Parameter(Mandatory=$false)] [ValidateSet("Information", "Warning", "Error", "None")] [String]$outputStream = "Error" ) # Convert channel name to channel ID verify that it exists $channelID = (Get-SlackChannel -Token $token -ChannelName $channelName).id if (!$channelID) { Write-OutputMessage "The channel '$($channelName)' cannot be found in Slack." -OutputStream $outputStream -ReturnMessage:$false return $false } # Prepare the API call parameters $invokeRestMethodParams = @{ Uri = "https://slack.com/api/channels.setTopic" Method = "POST" Headers = @{ "Content-Type" = "application/json" Authorization = "Bearer $($token)" } Body = @{ "channel" = "$($channelID)" "topic" = "$($topic)" } | ConvertTo-Json } # Try to set the channel topic Write-Information "Setting the topic of the channel '$($channelName)'." try { $response = Invoke-RestMethod @invokeRestMethodParams } catch { Write-OutputMessage "Exception occurred while setting the topic of the channel '$($channelName)'.`r`n$($_.Exception.Message)" -OutputStream $outputStream -ReturnMessage:$false return $false } # Verify that the updating is successful if ($response.ok) { Write-Information "The topic of the channel '$($channelName)' was set to $($newChannelName)." return $true } else { Write-OutputMessage "Failed to setting the topic of channel '$($channelName)' with the error message:`r`n$($response.error)." -OutputStream $outputStream -ReturnMessage:$false return $false } } |