param(
  [string]$BackupRoot = "H:\Windows-Neuaufsetzen-Backup",
  [string]$UserProfilePath = $env:USERPROFILE,
  [switch]$IncludeOllama
)

Set-StrictMode -Version Latest
$ErrorActionPreference = "Stop"

function Invoke-RobocopyBackup {
  param(
    [string]$Source,
    [string]$Destination,
    [string]$LogName
  )

  if (-not (Test-Path $Source)) {
    Write-Host "SKIP missing source: $Source"
    return
  }

  New-Item -ItemType Directory -Force -Path $Destination | Out-Null

  $LogDir = Join-Path $BackupRoot "12_Exportierte_Listen"
  New-Item -ItemType Directory -Force -Path $LogDir | Out-Null
  $LogPath = Join-Path $LogDir $LogName

  Write-Host "COPY $Source"
  Write-Host "  -> $Destination"

  robocopy $Source $Destination /E /COPY:DAT /DCOPY:DAT /R:2 /W:2 /XJ /TEE /LOG:$LogPath
  $ExitCode = $LASTEXITCODE

  if ($ExitCode -gt 7) {
    throw "Robocopy failed with exit code $ExitCode for source: $Source"
  }
}

if (-not (Test-Path $BackupRoot)) {
  throw "BackupRoot does not exist: $BackupRoot"
}

if (-not (Test-Path $UserProfilePath)) {
  throw "UserProfilePath does not exist: $UserProfilePath"
}

$CurrentUserJobs = @(
  @{ Source = Join-Path $UserProfilePath "Desktop";   Destination = Join-Path $BackupRoot "01_Desktop"; Log = "backup_current_desktop.log" },
  @{ Source = Join-Path $UserProfilePath "Documents"; Destination = Join-Path $BackupRoot "02_Dokumente"; Log = "backup_current_documents.log" },
  @{ Source = Join-Path $UserProfilePath "Pictures";  Destination = Join-Path $BackupRoot "03_Bilder"; Log = "backup_current_pictures.log" },
  @{ Source = Join-Path $UserProfilePath "Videos";    Destination = Join-Path $BackupRoot "04_Videos"; Log = "backup_current_videos.log" },
  @{ Source = Join-Path $UserProfilePath "Downloads"; Destination = Join-Path $BackupRoot "05_Downloads_wichtig\_current_downloads_all"; Log = "backup_current_downloads.log" },
  @{ Source = Join-Path $UserProfilePath "Music";     Destination = Join-Path $BackupRoot "15_Musik"; Log = "backup_current_music.log" },
  @{ Source = Join-Path $UserProfilePath ".ssh";      Destination = Join-Path $BackupRoot "09_Programme_Settings_Lizenzen\ssh"; Log = "backup_current_ssh.log" }
)

foreach ($Job in $CurrentUserJobs) {
  Invoke-RobocopyBackup -Source $Job.Source -Destination $Job.Destination -LogName $Job.Log
}

$GitConfig = Join-Path $UserProfilePath ".gitconfig"
if (Test-Path $GitConfig) {
  $GitDest = Join-Path $BackupRoot "09_Programme_Settings_Lizenzen\git"
  New-Item -ItemType Directory -Force -Path $GitDest | Out-Null
  Copy-Item -LiteralPath $GitConfig -Destination (Join-Path $GitDest ".gitconfig") -Force
}

$OldUserRoot = "D:\Users\Baerchen"
$OldUserJobs = @(
  @{ Source = Join-Path $OldUserRoot "Desktop";   Destination = Join-Path $BackupRoot "99_Unsortiert_von_D_F_G\D_Users_Baerchen\Desktop"; Log = "backup_old_baerchen_desktop.log" },
  @{ Source = Join-Path $OldUserRoot "Documents"; Destination = Join-Path $BackupRoot "99_Unsortiert_von_D_F_G\D_Users_Baerchen\Documents"; Log = "backup_old_baerchen_documents.log" },
  @{ Source = Join-Path $OldUserRoot "Pictures";  Destination = Join-Path $BackupRoot "99_Unsortiert_von_D_F_G\D_Users_Baerchen\Pictures"; Log = "backup_old_baerchen_pictures.log" },
  @{ Source = Join-Path $OldUserRoot "Videos";    Destination = Join-Path $BackupRoot "99_Unsortiert_von_D_F_G\D_Users_Baerchen\Videos"; Log = "backup_old_baerchen_videos.log" },
  @{ Source = Join-Path $OldUserRoot "Downloads"; Destination = Join-Path $BackupRoot "99_Unsortiert_von_D_F_G\D_Users_Baerchen\Downloads"; Log = "backup_old_baerchen_downloads.log" },
  @{ Source = Join-Path $OldUserRoot "Music";     Destination = Join-Path $BackupRoot "99_Unsortiert_von_D_F_G\D_Users_Baerchen\Music"; Log = "backup_old_baerchen_music.log" }
)

foreach ($Job in $OldUserJobs) {
  Invoke-RobocopyBackup -Source $Job.Source -Destination $Job.Destination -LogName $Job.Log
}

$ExtraJobs = @(
  @{ Source = "F:\BMW Leasing";          Destination = Join-Path $BackupRoot "07_Banking_Finanzen\BMW Leasing"; Log = "backup_f_bmw_leasing.log" },
  @{ Source = "F:\Marina Handy 2025";    Destination = Join-Path $BackupRoot "03_Bilder\Marina Handy 2025"; Log = "backup_f_marina_handy_2025.log" },
  @{ Source = "F:\Marina Handy Backup";  Destination = Join-Path $BackupRoot "03_Bilder\Marina Handy Backup"; Log = "backup_f_marina_handy_backup.log" },
  @{ Source = "G:\Gitea_Clone";          Destination = Join-Path $BackupRoot "06_Projekte\Gitea_Clone"; Log = "backup_g_gitea_clone.log" },
  @{ Source = "G:\open-webui";           Destination = Join-Path $BackupRoot "09_Programme_Settings_Lizenzen\open-webui"; Log = "backup_g_open_webui.log" },
  @{ Source = "G:\Treiber";              Destination = Join-Path $BackupRoot "13_Treiber_Windows\G_Treiber"; Log = "backup_g_treiber.log" }
)

if ($IncludeOllama) {
  $ExtraJobs += @{ Source = "G:\Ollama"; Destination = Join-Path $BackupRoot "09_Programme_Settings_Lizenzen\Ollama"; Log = "backup_g_ollama.log" }
}

foreach ($Job in $ExtraJobs) {
  Invoke-RobocopyBackup -Source $Job.Source -Destination $Job.Destination -LogName $Job.Log
}

Write-Host ""
Write-Host "Known-data backup finished."
Write-Host "Backup root: $BackupRoot"
Write-Host "Logs: $BackupRoot\12_Exportierte_Listen"
if (-not $IncludeOllama) {
  Write-Host "Note: G:\Ollama was not copied. Re-run with -IncludeOllama if you want to keep local models too."
}