Private/Invoke-HaloRequest.ps1

#Requires -Version 7

function Invoke-HaloRequest {
    <#
        .SYNOPSIS
            Sends a request to the Halo API.
        .DESCRIPTION
            Wrapper function to send web requests to the Halo API.
        .OUTPUTS
            Outputs an object containing the response from the web request.
    #>

    [Cmdletbinding()]
    [OutputType([Object])]
    param (
        # Hashtable containing the web request parameters.
        [Hashtable]$WebRequestParams,
        # Returns the Raw result. Useful for file downloads.
        [Switch]$RawResult
    )
    $ProgressPreference = 'SilentlyContinue'
    Invoke-HaloPreFlightCheck
    $Now = Get-Date
    if ($Script:HAPIAuthToken.Expires -le $Now) {
        Write-Verbose 'The auth token has expired, renewing.'
        $ReconnectParameters = @{
            URL = $Script:HAPIConnectionInformation.URL
            ClientId = $Script:HAPIConnectionInformation.ClientID
            ClientSecret = $Script:HAPIConnectionInformation.ClientSecret
            Scopes = $Script:HAPIConnectionInformation.AuthScopes
            Tenant = $Script:HAPIConnectionInformation.Tenant
        }
        Connect-HaloAPI @ReconnectParameters
    }
    if ($null -ne $Script:HAPIAuthToken) {
        $AuthHeaders = @{
            Authorization = "$($Script:HAPIAuthToken.Type) $($Script:HAPIAuthToken.Access)"
        }
        if ($null -ne $Script:HAPIConnectionInformation.AdditionalHeaders) {
            $RequestHeaders = $AuthHeaders + $Script:HAPIConnectionInformation.AdditionalHeaders
        } else {
            $RequestHeaders = $AuthHeaders
        }
    } else {
        $RequestHeaders = $null
    }
    try {
        Write-Verbose "Making a $($WebRequestParams.Method) request to $($WebRequestParams.Uri)"
        $Response = Invoke-WebRequest @WebRequestParams -Headers $RequestHeaders -ContentType 'application/json; charset=utf-8'
        Write-Debug "Response headers: $($Response.Headers | Out-String)"
        Write-Debug "Raw Response: $Response"
        if ($RawResult) {
            $Results = $Response
        } else {
            $Results = $Response.Content | ConvertFrom-Json
        }
        return $Results
    } catch {
        throw $_
    }
}