Send Private Messages through Slack API

jigsaw.ps1

$buildVCS = "whateverTheSHAofCommitYouWant"

import-module posh-git

git show - pretty $buildVCS > $pwd\test.txt
$a = get-content test.txt
($a -split "`r`n") | ForEach-Object {
  # the pattern is modified to check for a First Last name, or a single username, depending on how people have their git setup. 
  $email = Select-String -InputObject $_ -Pattern "Author: ([A-Za-z]{2,20} [A-Za-z]{2,20}|[A-Za-z]{2,20}) <[A-Za-z]{2,20}@YOUR_DOMAIN\.com>" | % { $_.Matches } | % { $_.Value }
  if($email){
    $who = $email -replace "Author: ([A-Za-z]{2,20} [A-Za-z]{2,20}|[A-Za-z]{2,20}) <", '' -replace ">", ''
  }
}

Write-Output "determined email = $who for this specific build to be the originator."
Write-Output "Proceeding to lookup user in Slack and Send them a message."
$targetUser = Invoke-RestMethod -Method POST -Uri "https://slack.com/api/users.lookupByEmail?email=$who@YOUR_DOMAIN.com&token=xoxb-THE-OBNOXIOUSLY-LONG-TOKEN" -ContentType 'application/x-www-form-urlencoded' | ConvertTo-Json
($targetUser -split "`r`n") | ForEach-Object {
  $userID = Select-string -InputObject $_ -Pattern '"id": '
  if($userID){
    Write-Output "FOUND"
    $cleanID = $userID -Replace '"id":', "" -replace '"', "" -replace ',', ""
    $cleanID = $cleanID.trim()
  }
}

Write-Output "ID:$cleanID"
$stuff ='Whatever Stuff you want to tell your user.'

Invoke-RestMethod -Method POST -Uri "https://slack.com/api/chat.postMessage?token=xoxb-THE-OBNOXIOUSLY-LONG-TOKEN&channel=$who&text=$stuff" -ContentType "application/json"