param(
    [Parameter(Mandatory=$true)]
    [string]$Identity,

    [Parameter(Mandatory=$true)]
    [string]$TemplatePath  # Path to the HTML template file
)

# Import admin credentials
$serverAddress = Get-Content -Path ".\DefaultServer.txt"
$credential = Import-Clixml -Path .\AdminCredential.xml

# Establish session with Exchange Server
$ExchSession = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri "http://$serverAddress/PowerShell/" -Authentication Kerberos -Credential $credential
Import-PSSession $ExchSession -DisableNameChecking -AllowClobber

# Retrieve user's details
$userDetails = Get-User -Identity $Identity
$mailboxDetails = Get-Mailbox -Identity $Identity

# Extract user information
$fullName = $userDetails.DisplayName
$jobTitle = $userDetails.Title
$address = "$($userDetails.StreetAddress), $($userDetails.City), $($userDetails.StateOrProvince), $($userDetails.PostalCode)"
$phoneNumber = $userDetails.TelephoneNumber
$mobileNumber = $userDetails.MobilePhone
$email = $mailboxDetails.PrimarySmtpAddress

# Load the HTML template
$templateContent = Get-Content -Path $TemplatePath -Raw

# Replace placeholders with actual user details
$templateContent = $templateContent -replace "{{FullName}}", $fullName
$templateContent = $templateContent -replace "{{JobTitle}}", $jobTitle
$templateContent = $templateContent -replace "{{Address}}", $address
$templateContent = $templateContent -replace "{{PhoneNumber}}", $phoneNumber
$templateContent = $templateContent -replace "{{MobileNumber}}", $mobileNumber
$templateContent = $templateContent -replace "{{Email}}", $email

# Update user's email signature
Set-MailboxMessageConfiguration -Identity $Identity -SignatureHtml $templateContent

# Enable the automatic inclusion of the signature
Set-MailboxMessageConfiguration -Identity $Identity -AutoAddSignature $true

Write-Host "Email signature updated successfully!"

# Clean up the remote PowerShell session
Remove-PSSession $ExchSession