move script out of Atera and host it here

Get-EventData.ps1

@@ -1,20 +1,60 @@
-Function Get-EventData {
+# This script depends on the host, port, username, and password being defined in the calling script
-    params(
+If ( -not($SFTPHost) ) { LogErr "SFTP host is not defined, this script will exit." ; Exit }
-        [string]$LogName,
+If ( -not($SFTPPort) ) { LogErr "SFTP port is not defined, this script will exit." ; Exit }
-        [string]$ProviderName,
+If ( -not($SFTPUser) ) { LogErr "SFTP username is not defined, this script will exit." ; Exit }
-        [datetime]$SearchFromTime
+If ( -not($SFTPPass) ) { LogErr "SFTP password is not defined, this script will exit." ; Exit }
-    )
 
-    # Store search position of event logs in the Windows Registry
+$ExportedEvents = "${Env:TEMP}\${Env:COMPUTERNAME}_events.csv"
-    # This should eliminate the possibility of double-reporting the same event
-    $BaseKey = 'HKLM:\SOFTWARE\ATERA Networks\Get-EventData'
 
-    $AllLogs = (Get-WinEvent -ListLog *)
+# Install Posh-SSH module
-    $LogsWithEvents = ($AllLogs | Where-Object { $_.RecordCount -gt 0 })
+If ( !(Get-Module -ListAvailable -Name Posh-SSH) ) {
+    LogMsg "Installing Posh-SSH module"
+    Install-Module -Name Posh-SSH -Force
+}
 
-    ForEach ( $logWithEvents in $LogsWithEvents ) {
+# Cleanup previous runs
+If ( Test-Path $ExportedEvents ) {
+    LogMsg "Deleting exported events from previous script run ""${ExportedEvents}"""
+    Try { Remove-Item $ExportedEvents -Force -ErrorAction Stop }
+    Catch { LogMsg "Cannot remove files from previous script execution. This script cannot run." ; Exit }
+}
 
-    }
+# Get all available log files
+$Logs = Get-WinEvent -ListLog *
 
+# Export all significant events from all available log files
+ForEach ($Log in $Logs) {
+    $LogName = $Log.LogName
+    LogMsg "Exporting events from: ${LogName}"
+    Try { Get-WinEvent -LogName $LogName -FilterXPath "Event/System[Level=1 or Level=2 or Level=3]" -ErrorAction Stop | Select LogName,ProviderName,Level,Id,Message | Export-Csv -Path "${ExportedEvents}" -Append -NoTypeInformation -ErrorAction Stop }
+    Catch { LogErr $_.Exception.Message }
+}
+
+# Deduplicate exported events
+LogMsg "Deduplicating and sorting all exported events"
+Try {
+    $TempEvents = Import-Csv $ExportedEvents -ErrorAction Stop | Sort-Object LogName,ProviderName,Id -Unique
+    $TempEvents | Sort-Object -Property LogName,ProviderName | Export-Csv $ExportedEvents -NoTypeInformation -ErrorAction Stop
+}
+Catch { LogErr $_.Exception.Message }
+
+# Upload to SFTP site
+If ( Test-Path $ExportedEvents ) {
+    $SFTPCred = New-Object System.Management.Automation.PSCredential($SFTPUser,$SFTPPass)
+    $DestinationFile = $(Split-Path -Path $ExportedEvents -Leaf)
+    
+    # Wait for a random amount of time before starting the connection and uploading
+    Start-Sleep -Seconds $(Get-Random -Minimum 1 -Maximum 120)
+
+    # Make the connection and upload the file
+    $SFTPSession = New-SFTPSession -ComputerName $SFTPHost -Credential $SFTPCred -AcceptKey -Port $SFTPPort
+    LogMsg "Uploading events to SFTP site"
+    Try { Set-SFTPItem -SessionId $SFTPSession.SessionId -Path $ExportedEvents -Destination . -Force }
+    Catch { LogErr $_.Exception.Message }
+    Finally { Remove-SFTPSession -SessionId $SFTPSession.SessionId }
     
 }
+
+# Cleanup
+LogMsg "Deleting ""${ExportedEvents}"""
+Remove-Item $ExportedEvents -Force -ErrorAction SilentlyContinue