JSSUpdateEmailFromAD.ps1

#CONFIGURE==============
#If false, will tell you what the script will do without actually doing it
$production = $true

#region JSS API Credentials
$jssURL = "https://jss.domain.com:8443"
$apiUser = "user"
$apiPass = "password"
#endregion

#Smart Group of devices to update user
$smartGroup = "Temp"


#END CONFIGURE===============


$jssCredential = New-Object System.Management.Automation.PSCredential ($apiUser, (ConvertTo-SecureString $apiPass -AsPlainText -Force))

$usernameList = @()



Function GetJSS($request) {
    Return Invoke-RestMethod -Uri $jssURL'/JSSResource/'$request -Credential $jssCredential -Method Get
}


Function ApplyUser {

    [CmdletBinding()]
    PARAM (
        [Parameter(Mandatory=$true)] $ipad,
        [Parameter(Mandatory=$true)] [string] $ipademail
    )


    $PostXML = "
    <mobile_device>
        <location>
            <email_address>$ipademail</email_address>
         </location>
    </mobile_device>
    "
   #write-host $PostXML
   #Write-Host "Uploading Command to JSS..."
   Invoke-RestMethod -Credential $jssCredential -Uri $jssURL'/JSSResource/mobiledevices/id/'$iPad -Method Put -Body $PostXML -ContentType "text/xml"
}

Function RetrieveIpadList {

    [CmdletBinding()]
    PARAM (
        [Parameter(Mandatory=$true)] $group
    )

    $rawdata = GetJSS("mobiledevicegroups/name/$group")
    $data = $rawData.SelectNodes('//mobile_device_group/mobile_devices/mobile_device')
    $ipadList = [System.Collections.ArrayList]@()
    foreach ($device in $data) {
    [Void]$ipadlist.Add($device.id)
    }

    Return $ipadList
}

Function RetrieveIpadDetails {

    [CmdletBinding()]
    PARAM (
        [Parameter(Mandatory=$true)] $id
    )

    $rawdata = GetJSS("mobiledevices/id/$id")
    $data = $rawData.SelectNodes('//mobile_device')

    Return $data
}

# Function to check if a student already exists in AD
Function GetADEmail($checkThis)
{
   $User = Get-ADUser -Filter {samAccountName -eq $checkThis} -Properties mail
   If ($User -eq $Null) { Return "" }
   Else { Return $User.mail }
}

$ipads = RetrieveIpadList -group $smartGroup
Write-Host $ipads.Count "iPads in Group"

foreach ($ipad in $ipads) {

    $ipadinfo = (RetrieveIpadDetails -id $ipad)
    if($ipadInfo.location.username) {
        $ademail = GetADEmail($ipadInfo.location.username)
        if($ademail) {
            if($production) {ApplyUser -ipad $ipad -ipademail $ademail}
            else {write-host Would apply $ademail to iPad ID $ipad}
        }
    }


}