$Global:__LastHistoryId = -1

function Global:__Terminal-Get-LastExitCode {
  if ($? -eq $True) {
    return 0
  }
  # TODO: Should we just return a string instead?
  # return -1
  if ("$LastExitCode" -ne "") { return $LastExitCode }
  return -1
}

function prompt {
  $gle = $(__Terminal-Get-LastExitCode);
  $LastHistoryEntry = $(Get-History -Count 1)
  # Skip finishing the command if the first command has not yet started
  if ($Global:__LastHistoryId -ne -1) {
    if ($LastHistoryEntry.Id -eq $Global:__LastHistoryId) {
      # Don't provide a command line or exit code if there was no history entry (eg. ctrl+c, enter on no command)
      $out += "`e]133;D`a"
    } else {
      # Command finished exit code
      # OSC 133 ; D [; <ExitCode>] ST
      $out += "`e]133;D;$gle`a"
    }
  }


  $loc = $($executionContext.SessionState.Path.CurrentLocation);
  # IMPORTANT: Make sure there's a printable charater _last_ in the prompt.
  # Otherwise, PSReadline is gonna use the terminating `\` here and colorize
  # that if it detects a syntax error
  $out += "`e]133;A$([char]07)"; # Prompt started
  $out += "`e]9;9;`"$loc`"$([char]07)"; # CWD
  $out += "PWSH $loc$('>' * ($nestedPromptLevel + 1)) "; # { your prompt here }
  $out += "`e]133;B$([char]07)"; # Prompt ended == Command started

  $Global:__LastHistoryId = $LastHistoryEntry.Id

  return $out
}