# Setup Windows Task Scheduler pentru Oracle DR Transfer
# Rulează ca Administrator!

# Verificare admin rights
if (-not ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) {
    Write-Error "This script must be run as Administrator!"
    exit 1
}

Write-Host "Setting up Oracle DR Transfer scheduled task..." -ForegroundColor Cyan

# Creare director logs dacă nu există
$logDir = "D:\rman_backup\logs"
if (-not (Test-Path $logDir)) {
    New-Item -ItemType Directory -Force -Path $logDir | Out-Null
    Write-Host "Created log directory: $logDir" -ForegroundColor Green
}

# Task pentru transfer DR (la 03:00 AM zilnic)
$taskName = "Oracle_DR_Transfer"
$scriptPath = "D:\rman_backup\transfer_to_dr.ps1"

# Verificare că scriptul există
if (-not (Test-Path $scriptPath)) {
    Write-Error "Transfer script not found at: $scriptPath"
    Write-Host "Please copy 02_transfer_to_dr.ps1 to D:\rman_backup\transfer_to_dr.ps1" -ForegroundColor Yellow
    exit 1
}

# Creare task action
$action = New-ScheduledTaskAction `
    -Execute "PowerShell.exe" `
    -Argument "-ExecutionPolicy Bypass -NoProfile -File `"$scriptPath`""

# Trigger: zilnic la 03:00 AM (după backup RMAN de la 02:00)
$trigger = New-ScheduledTaskTrigger -Daily -At "03:00AM"

# Principal: SYSTEM account cu highest privileges
$principal = New-ScheduledTaskPrincipal `
    -UserId "SYSTEM" `
    -LogonType ServiceAccount `
    -RunLevel Highest

# Settings
$settings = New-ScheduledTaskSettingsSet `
    -AllowStartIfOnBatteries `
    -DontStopIfGoingOnBatteries `
    -StartWhenAvailable `
    -RestartCount 3 `
    -RestartInterval (New-TimeSpan -Minutes 5)

# Șterge task-ul dacă există deja
$existingTask = Get-ScheduledTask -TaskName $taskName -ErrorAction SilentlyContinue
if ($existingTask) {
    Write-Host "Removing existing task: $taskName" -ForegroundColor Yellow
    Unregister-ScheduledTask -TaskName $taskName -Confirm:$false
}

# Înregistrare task nou
try {
    Register-ScheduledTask `
        -TaskName $taskName `
        -Action $action `
        -Trigger $trigger `
        -Principal $principal `
        -Settings $settings `
        -Description "Oracle DR - Transfer RMAN backups to DR server 10.0.20.37 daily at 3 AM" `
        -ErrorAction Stop

    Write-Host "✅ Task created successfully: $taskName" -ForegroundColor Green

    # Afișare detalii
    Write-Host "`nTask details:" -ForegroundColor Cyan
    Write-Host "  Name:        $taskName"
    Write-Host "  Schedule:    Daily at 03:00 AM"
    Write-Host "  Script:      $scriptPath"
    Write-Host "  Logs:        $logDir\transfer_YYYYMMDD.log"

    # Test manual (opțional)
    Write-Host "`nTo test the task manually, run:" -ForegroundColor Yellow
    Write-Host "  Start-ScheduledTask -TaskName '$taskName'" -ForegroundColor White

    # Verificare task
    $task = Get-ScheduledTask -TaskName $taskName
    Write-Host "`nTask status: $($task.State)" -ForegroundColor Green

} catch {
    Write-Error "Failed to create scheduled task: $_"
    exit 1
}

Write-Host "`n=========================================" -ForegroundColor Green
Write-Host "Setup complete!" -ForegroundColor Green
Write-Host "=========================================" -ForegroundColor Green
Write-Host "`nNext steps:"
Write-Host "1. Setup SSH keys for passwordless login to DR server"
Write-Host "2. Test the transfer script manually:"
Write-Host "   PowerShell -File $scriptPath"
Write-Host "3. Verify the scheduled task runs successfully tomorrow at 03:00 AM"