(PowerShell) Xero List Attachments for an Item (such as an Invoice)

Demonstrates how to get information about the attachments for a particular Xero item.

For more information, see https://developer.xero.com/documentation/api/attachments#GET

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

$http = New-Object Chilkat.Http

$jsonToken = New-Object Chilkat.JsonObject
$success = $jsonToken.LoadFile("qa_data/tokens/xero-access-token.json")
if ($success -eq $false) {
    $($jsonToken.LastErrorText)
    exit
}

$http.AuthToken = $jsonToken.StringOf("access_token")

# Replace the value here with an actual tenant ID obtained from this example:
# Get Xero Tenant IDs
$http.SetRequestHeader("Xero-tenant-id","83299b9e-5747-4a14-a18a-a6c94f824eb7")

$http.Accept = "application/json"

$url = "https://api.xero.com/api.xro/2.0/{$Endpoint}/{$Guid}/Attachments/"

# Endpoint can be Invoices, Receipts, CreditNotes, PurchaseOrders, etc.
$http.SetUrlVar("Endpoint","Invoices")

# Guid is the ID of the item, such as the InvoiceID.
$http.SetUrlVar("Guid","0032f627-3156-4d30-9b1c-4d3b994dc921")

$resp = $http.QuickRequest("GET",$url)
if ($http.LastMethodSuccess -ne $true) {
    $($http.LastErrorText)
    exit
}

$("Response Status Code: " + $resp.StatusCode)

$jsonResponse = New-Object Chilkat.JsonObject
$jsonResponse.Load($resp.BodyStr)
$jsonResponse.EmitCompact = $false
$($jsonResponse.Emit())

if ($resp.StatusCode -ne 200) {
    $("Failed.")

    exit
}

# Sample response:
# 
# Use the this online tool to generate parsing code from sample JSON: 
# Generate Parsing Code from JSON

# {
#   "Id": "24bfbcb9-dec9-4d33-835c-8f165d776766",
#   "Status": "OK",
#   "ProviderName": "Chilkat2222",
#   "DateTimeUTC": "\/Date(1587213296972)\/",
#   "Attachments": [
#     {
#       "AttachmentID": "daf106e2-8634-4349-bfcc-86c1df0793b2",
#       "FileName": "penguins.jpg",
#       "Url": "https://api.xero.com/api.xro/2.0/Invoices/0032f627-3156-4d30-9b1c-4d3b994dc921/Attachments/penguins.jpg",
#       "MimeType": "image/jpg",
#       "ContentLength": 777835
#     }
#   ]
# }

$Id = $jsonResponse.StringOf("Id")
$Status = $jsonResponse.StringOf("Status")
$ProviderName = $jsonResponse.StringOf("ProviderName")
$DateTimeUTC = $jsonResponse.StringOf("DateTimeUTC")
$i = 0
$count_i = $jsonResponse.SizeOfArray("Attachments")
while ($i -lt $count_i) {
    $jsonResponse.I = $i
    $AttachmentID = $jsonResponse.StringOf("Attachments[i].AttachmentID")
    $FileName = $jsonResponse.StringOf("Attachments[i].FileName")
    $v_Url = $jsonResponse.StringOf("Attachments[i].Url")
    $MimeType = $jsonResponse.StringOf("Attachments[i].MimeType")
    $ContentLength = $jsonResponse.IntOf("Attachments[i].ContentLength")
    $i = $i + 1
}