REST API data access

# Downloads an archive with reporting statistics for the specified tenant
function GetDataFile {
    Param (
        [Parameter(Mandatory=$true)][String]$AppServer,
        [Parameter(Mandatory=$true)][AllowEmptyString()][string]$TenantName,
        [Parameter(Mandatory=$true)][string]$User,
        [Parameter(Mandatory=$true)][string]$Password,
        [Parameter(Mandatory=$true)][Int]$Year,
        [Parameter(Mandatory=$true)][Int]$Month,
        [Parameter(Mandatory=$true)][string]$DownloadPath,
        [Parameter(Mandatory=$true)][string]$ReportingServiceUri
    )
    # Use the tenant name and the application server address passed in the function parameters
    $URI = "https://$AppServer/Flexicapture12/Server/FCAuth/API/wsdl?Tenant=$TenantName"
    # Create a PSCredential object with the given username and password
    $creds = New-Object System.Management.Automation.PSCredential -ArgumentList @($User,(ConvertTo-SecureString -String $Password -AsPlainText -Force))
    # Create a proxy web service that will authenticate with these credentials
    $proxy = New-WebServiceProxy -Uri $URI -Credential $creds
    $proxy.Url = "https://$AppServer/flexicapture12/Server/FCAuth/API/Soap?Tenant=$TenantName"
    $proxy.Credentials = $creds
    # And use it to ask the FlexiCapture API for the token
    $ticket = $proxy.GetCurrentUserAuthTicket()
    $nameFile = $Year.ToString() + "-" + $Month.ToString()
    # Create the path for the downloaded file
    $path = "$DownloadPath\$nameFile.zip"
    # Create a request with a Bearer authentication header containing the token,
    # and send it to the Reporting data access service to get the archive
    # for the specified tenant and period
    $headers = @{ Authorization = "Bearer " + $ticket}
    Invoke-RestMethod -Uri $ReportingServiceUri"?tenantName=$TenantName&year=$Year&month=$Month" -Headers $headers -OutFile $path
}
GetDataFile