###########################
# Autor : Christopher Keyaert
# Version : 1.0
# Date : 28 DEC 2009
##########################
#Getting the credential of the user
#$creds = Get-Credential

###########################
#Param
##########################
$RMS =  #don't forget to use the FQN RMS001.contoso.local
$MS  =  #don't forget to use the FQN MS001.contoso.local

$myFile = "D:\Dep\myfile.txt" #List of Servers
$ResultPath = "D:\Dep" #Folder for path output
Start-Transcript -path "$ResultPath\Transcript$(get-date -uformat '%Y-%m-%d_%Hh%Ms%S').log"

$MaintenanceModeEnable = $false

$MaintenanceModeDuration = 10 * 1440 # 1440 minutes per day
$comment = 'Global Deployment'
$reason = 'PlannedOther'

######################
#Functions
#####################
function SetToMaintenanceMode($rootMS,$computerPrincipalName,$minutes,$comment,$reason)
{
$computerPrincipalName = $computerPrincipalName + ".dir.ucb-group.com"
$computerClass = get-monitoringclass -name:Microsoft.Windows.Computer
$healthServiceClass = get-monitoringclass -name:Microsoft.SystemCenter.HealthService
$healthServiceWatcherClass = get-monitoringclass -name:Microsoft.SystemCenter.HealthServiceWatcher
$computerCriteria = "PrincipalName='" + $computerPrincipalName + "'"
$computer = get-monitoringobject -monitoringclass:$computerClass -criteria:$computerCriteria
$healthServices = $computer.GetRelatedMonitoringObjects($healthServiceClass)
$healthService = $healthServices[0]
$healthServiceCriteria = "HealthServiceName='" + $computerPrincipalName + "'"
$healthServiceWatcher = get-monitoringobject -monitoringclass:$healthServiceWatcherClass -criteria:$healthServiceCriteria
$startTime = [System.DateTime]::Now
$endTime = $startTime.AddMinutes($minutes)

Write-host " "
"Putting " + $computerPrincipalName + " into maintenance mode"
New-MaintenanceWindow -startTime:$startTime -endTime:$endTime -monitoringObject:$computer -comment:$comment -Reason:$reason
 
"Putting the associated health service into maintenance mode"
New-MaintenanceWindow -startTime:$startTime -endTime:$endTime -monitoringObject:$healthService -comment:$comment -Reason:$reason
 
"Putting the associated health service watcher into maintenance mode"
New-MaintenanceWindow -startTime:$startTime -endTime:$endTime -monitoringObject:$healthServiceWatcher -comment:$comment -Reason:$reason
Write-host " "

}

#################################
#Init the connection to SCOM srv
#################################
if(-not (Get-pssnapin | Where-Object {$_.Name -eq "Microsoft.EnterpriseManagement.OperationsManager.Client"}))
    {
    Add-PSSnapin Microsoft.EnterpriseManagement.OperationsManager.Client
    }  
new-managementGroupConnection -ConnectionString:$RMS
Set-Location "OperationsManagerMonitoring::" -ErrorVariable errSnapin ;
Set-Location $RMS -ErrorVariable errSnapin ;   

##########################
#Agent installation
##########################
#Creating the computers list
$ComputersList  = @()
$ComputersList = Get-Content $myFile

#Define a WindowsDiscoveryConfiguration
$discoConfig = New-WindowsDiscoveryConfiguration –ComputerName: $ComputersList –PerformVerification: $true -ComputerType: "Server" #–ActionAccountCredential: $creds

#Start the discovery process.
$managementServer = Get-ManagementServer | Where-Object {$_.PrincipalName -like "*$MS*"}

$discoResult = Start-Discovery –ManagementServer: $managementServer –WindowsDiscoveryConfiguration: $discoConfig

#Check that the discovery process discovered the Windows computers you specified.
$discoResult.CustomMonitoringObjects

if($discoResult.CustomMonitoringObjects -ne $null)
    {
    Write-Host "Agent installation in progress..."
    Write-Host ""
    Install-Agent –ManagementServer $managementServer –AgentManagedComputer $discoResult.CustomMonitoringObjects

    Write-host "Installation Finished, waiting for 60 secondes"
    Start-Sleep -s 60
    }
else{
    Write-Host "No servers discovered"
    }  

####################################################################
#We have to check if all the agent has been well installed + Maintenance mode
#####################################################################
Write-Host ""
Write-Host "Installation Checking"
Write-Host ""

$InstallArray = @()
foreach($srv in $ComputersList)
    {
    $Value = $null
    $Value = Get-agent | Where-Object {$_.ComputerName -like "*$srv*"}
   
    if($Value -ne $null)
        {
        Write-Host "$srv - Agent installed "
        $InstallTime = $Value.InstallTime
        $HealthState = $Value.HealthState
        $AgentInstalled = $true
       
        #Write-Host "Activation of the Maintenance Mode"
        #Put the server in Maintenance Mode
        if($MaintenanceModeEnable -eq $true){SetToMaintenanceMode $RMS $srv $MaintenanceModeDuration $comment $reason}
       
        }
    else{
        Write-Host "$srv - Agent not installed"
        $AgentInstalled = $false
        $InstallTime = ""
        $HealthState = ""
        }
   
    $obj = New-Object PSObject
    $obj | Add-Member Noteproperty -Name "Name" -Value $srv
    $obj | Add-Member Noteproperty -Name "AgentInstall" -Value  $AgentInstalled
    $obj | Add-Member Noteproperty -Name "InstallTime" -Value  $InstallTime
    $obj | Add-Member Noteproperty -Name "HealthState" -Value  $HealthState
    $InstallArray += $obj
    }

Write-Host ""  
Write-Host "Save the Result File"  

$InstallArray  | Export-Csv "$ResultPath\$(get-date -uformat '%Y-%m-%d_%Hh%Ms%S').csv"
Stop-Transcript