Output/HaloAPI/Public/Get/Get-HaloSupplier.ps1

#Requires -Version 7
function Get-HaloSupplier {
    <#
        .SYNOPSIS
            Gets suppliers from the Halo API.
        .DESCRIPTION
            Retrieves suppliers from the Halo API - supports a variety of filtering parameters.
        .OUTPUTS
            A powershell object containing the response.
    #>

    [CmdletBinding( DefaultParameterSetName = 'Multi' )]
    [OutputType([Object])]
    [Diagnostics.CodeAnalysis.SuppressMessageAttribute('PSReviewUnusedParameter', '', Justification = 'Uses dynamic parameter parsing.')]
    Param(
        # Supplier ID
        [Parameter( ParameterSetName = 'Single', Mandatory = $True )]
        [int64]$SupplierID,
        # Paginate results
        [Parameter( ParameterSetName = 'Multi' )]
        [Alias('pageinate')]
        [switch]$Paginate,
        # Number of results per page.
        [Parameter( ParameterSetName = 'Multi' )]
        [Alias('page_size')]
        [int32]$PageSize,
        # Which page to return.
        [Parameter( ParameterSetName = 'Multi' )]
        [Alias('page_no')]
        [int32]$PageNo,
        # Which field to order results based on.
        [Parameter( ParameterSetName = 'Multi' )]
        [string]$Order,
        # Order results in descending order (respects the field choice in '-Order')
        [Parameter( ParameterSetName = 'Multi' )]
        [switch]$OrderDesc,
        # Return suppliers matching the search term in the results.
        [Parameter( ParameterSetName = 'Multi' )]
        [string]$Search,
        # The number of suppliers to return if not using pagination.
        [Parameter( ParameterSetName = 'Multi' )]
        [int32]$Count,
        # Filter by the specified top level ID.
        [Parameter( ParameterSetName = 'Multi' )]
        [Alias('toplevel_id')]
        [int32]$TopLevelID,
        # Include active suppliers in the results.
        [Parameter( ParameterSetName = 'Multi' )]
        [switch]$IncludeActive,
        # Include inactive suppliers in the results.
        [Parameter( ParameterSetName = 'Multi' )]
        [switch]$IncludeInactive,
        # Include extra objects in the result.
        [Parameter( ParameterSetName = 'Single' )]
        [Switch]$IncludeDetails
    )
    Invoke-HaloPreFlightChecks
    $CommandName = $MyInvocation.InvocationName
    $Parameters = (Get-Command -Name $CommandName).Parameters
    # Workaround to prevent the query string processor from adding a 'SupplierID=' parameter by removing it from the set parameters.
    if ($SupplierID) {
        $Parameters.Remove('SupplierID') | Out-Null
    }
    try {
        if ($SupplierID) {
            Write-Verbose "Running in single-supplier mode because '-SupplierID' was provided."
            $QSCollection = New-HaloQuery -CommandName $CommandName -Parameters $Parameters
            $Resource = "api/supplier/$($SupplierID)"
            $RequestParams = @{
                Method = 'GET'
                Resource = $Resource
                AutoPaginateOff = $True
                QSCollection = $QSCollection
                ResourceType = 'suppliers'
            }
        } else {
            Write-Verbose 'Running in multi-supplier mode.'
            $QSCollection = New-HaloQuery -CommandName $CommandName -Parameters $Parameters -IsMulti
            $Resource = 'api/supplier'
            $RequestParams = @{
                Method = 'GET'
                Resource = $Resource
                AutoPaginateOff = $Paginate
                QSCollection = $QSCollection
                ResourceType = 'suppliers'
            }
        }
        $SupplierResults = New-HaloGETRequest @RequestParams
        Return $SupplierResults
    } catch {
        $Command = $CommandName -Replace '-', ''
        $ErrorRecord = @{
            ExceptionType = 'System.Exception'
            ErrorMessage = "$($CommandName) failed."
            InnerException = $_.Exception
            ErrorID = "Halo$($Command)CommandFailed"
            ErrorCategory = 'ReadError'
            TargetObject = $_.TargetObject
            ErrorDetails = $_.ErrorDetails
            BubbleUpDetails = $False
        }
        $CommandError = New-HaloErrorRecord @ErrorRecord
        $PSCmdlet.ThrowTerminatingError($CommandError)
    }
}