################################################################################
##  File:  Validate-SQLExpress.ps1
##  Desc:  Validate Microsoft SQL Express installation
################################################################################

#Parameters for database access
$sqlUser = "sa"
$sqlPassword = "P@ssword!!"
$sqlInstance = "SQL2019"

function Test-SqlConnection {
    param(
        [Parameter(Mandatory)]
        [string]$ServerName,
        [Parameter(Mandatory)]
        [string]$IntegratedSecurity,
        [Parameter(Mandatory)]
        [string]$UserName,
        [Parameter(Mandatory)]
        [string]$Password
    )
    $ErrorActionPreference = 'Stop'
    try {
        $connectionString = 'Server={0};Integrated Security={1};User ID={2};Password={3}' -f $ServerName,$IntegratedSecurity,$UserName,$Password
        $sqlConnection = New-Object System.Data.SqlClient.SqlConnection $connectionString
        $sqlConnection.Open()
        Write-Host -Object "Connection to SQL Express was successful."
    } catch {
        Write-Host -Object "Connection to SQL Express cannot be established."
        exit 1

    } finally {
        ## Close the connection when we're done
        $sqlConnection.Close()
    }
}

$instanceName = "$env:computername\$sqlInstance"
Test-SqlConnection -ServerName $instanceName -IntegratedSecurity "false" -UserName $sqlUser -Password $sqlPassword