Write a Script That Does One Job

A useful script is boring on purpose. One job, a log, and a loud fail when something is wrong. That is how Phyllux Tech organize and migrate scripts stay re runnable.

#requires -version 5.1
$ErrorActionPreference = 'Stop'
$Root = $PSScriptRoot
$LogPath = Join-Path $Root 'one-job-log.txt'

function Write-Log([string]$Message) {
  $line = '{0} {1}' -f (Get-Date -Format 'o'), $Message
  Add-Content -Path $LogPath -Value $line -Encoding utf8
  Write-Host $Message
}

Write-Log "=== one job start ==="
$Target = Join-Path $Root 'notes'
if (-not (Test-Path $Target)) {
  New-Item -ItemType Directory -Path $Target | Out-Null
}
$out = Join-Path $Target ("hello-{0}.txt" -f (Get-Date -Format 'yyyy-MM-dd'))
Set-Content -Path $out -Value "Hello from one job." -Encoding utf8
Write-Log "Wrote $out"