Import-Module PowershellGet
Set-ExecutionPolicy -ExecutionPolicy RemoteSigned #Yes
Install-Module Posh-SSH #Yes

Import-Module Posh-SSH
Import-Module Posh-SSH
 
$servers = @()
$servers += @{
    name = 'adc01'
    ip = '192.168.124.11'
}
 
 
#$cred = Get-Credential -Credential nsroot
#$cred.Password | ConvertFrom-SecureString | Set-Content ./nsroot.txt
 
 
$nsUser = "nsroot"
$encryptedPass = Get-Content ./nsroot.txt | ConvertTo-SecureString
$cred = New-Object System.Management.Automation.PsCredential($nsUser, $encryptedPass)
 
$backupStorePath = "./"
$backup_level = "basic", "full"
$doFullBackup = $true #or $false
$eraseBackup = $false
 
function remove_backup {
    param (
        $server,
        $backupName
    )
    $sshCommand = "rm system backup " + $backupName +".tgz"
    Write-Host($sshCommand)
    $sshSession = New-SSHSession -ComputerName $server.ip -Credential $cred -AcceptKey
    $result = Invoke-SSHCommand -Command $sshCommand -SSHSession $sshSession
    if ($result.ExitStatus -eq 0) {
            Write-Host("remove: ",$server.name,$backupname)
    }
    else {
        Write-Host($result.Host, $result.Output)
    }
    Remove-SSHSession -SessionId $sshSession.SessionId
}
 
function get_backup {
    param (
        $server,
        $backupName,
        $destinationPath = "./",
        $erase
    )
    $backup_file_path = "/var/ns_sys_backup/$backupName.tgz"
    Write-Host($backup_file_path)
    $result = Get-SCPItem `
        -ComputerName $server.ip `
        -Credential $cred `
        -Path $backup_file_path `
        -PathType File `
        -Destination $destinationPath `
        -Force
    if ($erase -eq $true){remove_backup -server $server -backupName $backupName}
    return $result
}
 
function create_backup {
    param (
        $server,
        $doFullBackup = $true,
        $erase = $false
    )
 
    $backup_name_pattern = $server.name + "_" + $(get-date -format "yyyy_MM_dd")
    Write-Host($server.name,$backup_name_pattern,$backup_level[$doFullBackup], $erase)
    $sshCommand = "create system backup " + $backup_name_pattern +" -level " + $backup_level[$doFullBackup]
    #Write-Host($sshCommand)
    $sshSession = New-SSHSession -ComputerName $server.ip -Credential $cred -AcceptKey
    $result = Invoke-SSHCommand -Command $sshCommand -SSHSession $sshSession
    if ($result.ExitStatus -eq 0) {
        $result = get_backup -server $server -backupName $backup_name_pattern -destinationPath $backupStorePath -erase $erase
    }
    else {
        Write-Host($result.Host, $result.Output)
    }
    Remove-SSHSession -SessionId $sshSession.SessionId
}
 
 
 
foreach ($server in $servers) {
    create_backup -server $server -doFullBackup $doFullBackup -erase $eraseBackup
}