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schedule-install-agent-task/CreateTask.ps1

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+<#
+.SYNOPSIS
+  Copies InstallIvantiAgent.ps1 to C:\Windows\Temp and creates a scheduled task to run it at startup with a small delay.
+
+.DESCRIPTION
+  1) Detects the script directory using $PSScriptRoot.
+  2) Copies InstallIvantiAgent.ps1 to C:\Windows\Temp.
+  3) Creates a scheduled task that runs at startup with a 2-minute delay.
+#>
+
+# 1) Define script paths
+$localScript = Join-Path -Path $PSScriptRoot -ChildPath "InstallIvantiAgent.ps1"
+$destination = "C:\Windows\Temp\InstallIvantiAgent.ps1"
+
+# 2) Copy script to C:\Windows\Temp
+Write-Host "Copying InstallIvantiAgent.ps1 to $destination"
+Copy-Item -Path $localScript -Destination $destination -Force
+
+# 3) Define the scheduled task name
+$taskName = "IvantiInstallAtStartup"
+
+Write-Host "Creating scheduled task '$taskName' to run at startup with a delay..."
+
+# 4) Define the action: Run the script silently with PowerShell
+$action = New-ScheduledTaskAction -Execute "powershell.exe" -Argument "-NoProfile -ExecutionPolicy Bypass -File `"$destination`""
+
+# 5) Run as SYSTEM with highest privileges
+$principal = New-ScheduledTaskPrincipal -UserId "NT AUTHORITY\SYSTEM" -RunLevel Highest
+
+# 6) Trigger: Run at startup with a 2-minute delay
+# Définir une valeur aléatoire entre 2 et 59 minutes
+$randomDelay = Get-Random -Minimum 2 -Maximum 60
+
+# Convertir en format ISO 8601 (PTXM)
+$delayString = "PT${randomDelay}M"
+
+# Créer le déclencheur avec un délai aléatoire
+$trigger = New-ScheduledTaskTrigger -AtStartup
+$trigger.Delay = $delayString  # Appliquer le délai aléatoire
+
+# 7) Check if the task already exists and remove it before creating a new one
+if (Get-ScheduledTask -TaskName $taskName -ErrorAction SilentlyContinue) {
+    Write-Host "Task '$taskName' already exists. Deleting it..."
+    Unregister-ScheduledTask -TaskName $taskName -Confirm:$false
+}
+
+# 8) Create and register the scheduled task
+$scheduledTask = New-ScheduledTask -Action $action -Trigger $trigger -Principal $principal
+Register-ScheduledTask -TaskName $taskName -InputObject $scheduledTask | Out-Null
+
+Write-Host "Scheduled task '$taskName' created successfully. It will run at startup with a 2-minute delay."