# First lets create a text file, where we will later save the freedisk space info
$freeSpaceFileName = "DiskSpaceReport_ONS_Exchange.htm"
$serverlist = "C:\scripts\input\Exchnage_ONS_Servers.txt"
$warning = 30
$critical = 10

# EMAIL PROPERTIES
# Set the recipients of the report.
$users = “Alberto.Igbinedion@ons.gov.uk“
# Below commented out are some examples of how this report can be emailed

$users = “Alberto.Igbinedion@ons.gov.uk” # I use this for testing by using my email address.
$users = “Messaging&ActiveDirectory@ons.gov.uk”
#$users = “you@company.com”, “manager@company.com”, “etc@company.com”; # can be sent to individuals

New-Item -ItemType file $freeSpaceFileName -Force
# Getting the freespace info using WMI
#Get-WmiObject win32_logicaldisk  | Where-Object {$_.drivetype -eq 3} | format-table DeviceID, VolumeName,status,Size,FreeSpace | Out-File FreeSpace.txt
# Function to write the HTML Header to the file
Function writeHtmlHeader
{
param($fileName)
$date = ( get-date ).ToString('dd/mm/yyyy')
Add-Content $fileName "<html>"
Add-Content $fileName "<head>"
Add-Content $fileName "<meta http-equiv='Content-Type' content='text/html; charset=iso-8859-1'>"
Add-Content $fileName '<title>All Servers DiskSpace Report</title>'
add-content $fileName '<STYLE TYPE="text/css">'
add-content $fileName  "<!--"
add-content $fileName  "td {"
add-content $fileName  "font-family: Tahoma;"
add-content $fileName  "font-size: 11px;"
add-content $fileName  "border-top: 1px solid #999999;"
add-content $fileName  "border-right: 1px solid #999999;"
add-content $fileName  "border-bottom: 1px solid #999999;"
add-content $fileName  "border-left: 1px solid #999999;"
add-content $fileName  "padding-top: 0px;"
add-content $fileName  "padding-right: 0px;"
add-content $fileName  "padding-bottom: 0px;"
add-content $fileName  "padding-left: 0px;"
add-content $fileName  "}"
add-content $fileName  "body {"
add-content $fileName  "margin-left: 5px;"
add-content $fileName  "margin-top: 5px;"
add-content $fileName  "margin-right: 0px;"
add-content $fileName  "margin-bottom: 10px;"
add-content $fileName  ""
add-content $fileName  "table {"
add-content $fileName  "border: thin solid #000000;"
add-content $fileName  "}"
add-content $fileName  "-->"
add-content $fileName  "</style>"
Add-Content $fileName "</head>"
Add-Content $fileName "<body>"

add-content $fileName  "<table width='100%'>"
add-content $fileName  "<tr bgcolor='#CCCCCC'>"
add-content $fileName  "<td colspan='7' height='25' align='center'>"
add-content $fileName  "<font face='tahoma' color='#003399' size='4'><strong>All Servers DiskSpace Report - $date</strong></font>"
add-content $fileName  "</td>"
add-content $fileName  "</tr>"
add-content $fileName  "</table>"

}

# Function to write the HTML Header to the file
Function writeTableHeader
{
param($fileName)

Add-Content $fileName "<tr bgcolor=#CCCCCC>"
Add-Content $fileName "<td width='10%' align='center'>Drive</td>"
Add-Content $fileName "<td width='50%' align='center'>Drive Label</td>"
Add-Content $fileName "<td width='10%' align='center'>Total Capacity(GB)</td>"
Add-Content $fileName "<td width='10%' align='center'>Used Capacity(GB)</td>"
Add-Content $fileName "<td width='10%' align='center'>Free Space(GB)</td>"
Add-Content $fileName "<td width='10%' align='center'>Freespace %</td>"
Add-Content $fileName "</tr>"
}

Function writeHtmlFooter
{
param($fileName)

Add-Content $fileName "</body>"
Add-Content $fileName "</html>"
}

Function writeDiskInfo
{
param($fileName,$devId,$volName,$frSpace,$totSpace)
$totSpace=[math]::Round(($totSpace/1073741824),2)
$frSpace=[Math]::Round(($frSpace/1073741824),2)
$usedSpace = $totSpace - $frspace
$usedSpace=[Math]::Round($usedSpace,2)
$freePercent = ($frspace/$totSpace)*100
$freePercent = [Math]::Round($freePercent,0)
 if ($freePercent -gt $warning)
 {
 Add-Content $fileName "<tr>"
 Add-Content $fileName "<td>$devid</td>"
 Add-Content $fileName "<td>$volName</td>"

 Add-Content $fileName "<td>$totSpace</td>"
 Add-Content $fileName "<td>$usedSpace</td>"
 Add-Content $fileName "<td>$frSpace</td>"
 Add-Content $fileName "<td>$freePercent</td>"
 Add-Content $fileName "</tr>"
 }
 elseif ($freePercent -le $critical)
 {
 Add-Content $fileName "<tr>"
 Add-Content $fileName "<td>$devid</td>"
 Add-Content $fileName "<td>$volName</td>"
 Add-Content $fileName "<td>$totSpace</td>"
 Add-Content $fileName "<td>$usedSpace</td>"
 Add-Content $fileName "<td>$frSpace</td>"
 Add-Content $fileName "<td bgcolor='#FF0000' align=center>$freePercent</td>"
 #<td bgcolor='#FF0000' align=center>
 Add-Content $fileName "</tr>"
 }
 else
 {
 Add-Content $fileName "<tr>"
 Add-Content $fileName "<td>$devid</td>"
 Add-Content $fileName "<td>$volName</td>"
 Add-Content $fileName "<td>$totSpace</td>"
 Add-Content $fileName "<td>$usedSpace</td>"
 Add-Content $fileName "<td>$frSpace</td>"
 Add-Content $fileName "<td bgcolor='#FBB917' align=center>$freePercent</td>"
 # #FBB917
 Add-Content $fileName "</tr>"
 }
}

# Send Notification if alert $i is greater then 0
if ($i -gt 0)
{
foreach ($user in $users)
{
Write-Host “Sending Email notification to $user”

$smtpServer = “FA1RVWAPXX398.Ons.Statistics.gov.uk“
$smtp = New-Object Net.Mail.SmtpClient($smtpServer)
$msg = New-Object Net.Mail.MailMessage
$msg.To.Add($user)
$msg.From = “Alberto.Igbinedion@ons.gov.uk“
$msg.Subject = “Environment DiskSpace Report for $titledate”
$msg.IsBodyHTML = $true
$msg.Body = get-content $diskReport
$smtp.Send($msg)
$body = “Report completed.”
}
}


writeHtmlHeader $freeSpaceFileName
foreach ($server in Get-Content $serverlist)
{
 Add-Content $freeSpaceFileName "<table width='100%'><tbody>"
 Add-Content $freeSpaceFileName "<tr bgcolor='#CCCCCC'>"
 Add-Content $freeSpaceFileName "<td width='100%' align='center' colSpan=6><font face='tahoma' color='#003399' size='2'><strong> $server </strong></font></td>"
 Add-Content $freeSpaceFileName "</tr>"

 writeTableHeader $freeSpaceFileName

 $dp = Get-WmiObject win32_logicaldisk -ComputerName $server |  Where-Object {$_.drivetype -eq 3}
 foreach ($item in $dp)
 {
 Write-Host  $item.DeviceID  $item.VolumeName $item.FreeSpace $item.Size
 writeDiskInfo $freeSpaceFileName $item.DeviceID $item.VolumeName $item.FreeSpace $item.Size

 }
}
writeHtmlFooter $freeSpaceFileName
$date = ( get-date ).ToString('yyyy/MM/dd')
Send-MailMessage -From $from -To $to -Subject "DiskSpaceReport_ONS_Exchange_Status" -SmtpServer "FA1RVWAPXX398.Ons.Statistics.gov.uk" hub1 $freeSpaceFileName

# Export-Csv C:\Scripts\Output\DiskSpaceReport_ONS_Exchange_Status.csv -NoTypeInformation 