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Outlook --Download Attachments for a Specific Message

Demonstrates how to download the attachments for a particular email message.
Note: This example requires Chilkat v9.5.0.67 or greater.
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Local $bSuccess = False

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

$oHttp = ObjCreate("Chilkat.Http")

; Use your previously obtained access token here:
; See the following examples for getting an access token:
;    Get Microsoft Graph OAuth2 Access Token (Azure AD v2.0 Endpoint).
;    Get Microsoft Graph OAuth2 Access Token (Azure AD Endpoint).
;    Refresh Access Token (Azure AD v2.0 Endpoint).
;    Refresh Access Token (Azure AD Endpoint).

$oHttp.AuthToken = "MICROSOFT_GRAPH_ACCESS_TOKEN"

$oSbResponse = ObjCreate("Chilkat.StringBuilder")

; Sends:  GET /users/{user_id | userPrincipalName}/messages/{message_id}/attachments
; Note: It is also possible to use the literal string "me" for the current logged-on user.
; For example: GET /me/messages/{message_id}/attachments

$oHttp.ClearUrlVars 
$oHttp.SetUrlVar("userPrincipalName","chilkatsoft@outlook.com")

; Assume we already have a message ID from previously listing the messages in a folder
Local $sMessageId = "AAMkADYzZWE3YmZmLWU0YzgtNGNkZC04MGE1LWFiYTFlNTRlY2QwYQBGAAAAAAAu7cUXL5YOTrdsUIw7-v8FBwBUcG0qWqkmQYqWLHQataQxAACnwqJUAABUcG0qWqkmQYqWLHQataQxAACnwrnOAAA="
$oHttp.SetUrlVar("message_id",$sMessageId)

; Send the request to download the attachments.
$bSuccess = $oHttp.QuickGetSb("https://graph.microsoft.com/v1.0/users/{$userPrincipalName}/messages/{$message_id}/attachments",$oSbResponse)
If (($bSuccess <> True) And ($oHttp.LastStatus = 0)) Then
    ConsoleWrite($oHttp.LastErrorText & @CRLF)
    Exit
EndIf

; The attachment data is contained within the JSON response.
$oJson = ObjCreate("Chilkat.JsonObject")
$oJson.LoadSb($oSbResponse)
$oJson.EmitCompact = False

ConsoleWrite("Status code = " & $oHttp.LastStatus & @CRLF)
If ($oHttp.LastStatus <> 200) Then
    ConsoleWrite($oJson.Emit() & @CRLF)
    ConsoleWrite("Failed." & @CRLF)
EndIf

; This is a sample JSON response.  The code for parsing and extracting/saving the attachments
; is shown below.

; 	{
; 	  "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('chilkatsoft%40outlook.com')/messages('AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2wAAAA%3D%3D')/attachments",
; 	  "value": [
; 	    {
; 	      "@odata.type": "#microsoft.graph.fileAttachment",
; 	      "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2wAAAAESABAAft6wtbaSJU6sgQLi98DI0Q==",
; 	      "lastModifiedDateTime": "2017-05-10T00:30:51Z",
; 	      "name": "fishing.pdf",
; 	      "contentType": "application/pdf",
; 	      "size": 295680,
; 	      "isInline": false,
; 	      "contentId": "F861B218BE380F44B16933097FDDACFC@namprd20.prod.outlook.com",
; 	      "contentLocation": null,
; 	      "contentBytes": "JVBERi0xLjMKJcfsj6 ... yZWYKMjk0MzY5CiUlRU9GCg=="
; 	    },
; 	    {
; 	      "@odata.type": "#microsoft.graph.fileAttachment",
; 	      "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2wAAAAESABAAXS7qXQ-iRUCYXnhJpN8Ihg==",
; 	      "lastModifiedDateTime": "2017-05-10T00:30:51Z",
; 	      "name": "testCert.cer",
; 	      "contentType": "application/octet-stream",
; 	      "size": 1674,
; 	      "isInline": false,
; 	      "contentId": "5E51FA33EF0F8941ACC8260395CB1A33@namprd20.prod.outlook.com",
; 	      "contentLocation": null,
; 	      "contentBytes": "MIIFRjCCBC6gAwIBA ... 7pt3C5w=="
; 	    }
; 	  ]
; 	}

$oSbSavePath = ObjCreate("Chilkat.StringBuilder")
$oAttachData = ObjCreate("Chilkat.BinData")
$oLastMod = ObjCreate("Chilkat.CkDateTime")
$oFac = ObjCreate("Chilkat.FileAccess")

Local $i = 0
Local $iNumMessages = $oJson.SizeOfArray("value")
While $i < $iNumMessages
    $oJson.I = $i

    ConsoleWrite("name: " & $oJson.StringOf("value[i].name") & @CRLF)
    ConsoleWrite("contentType: " & $oJson.StringOf("value[i].contentType") & @CRLF)
Local $iSizeInBytes = $oJson.IntOf("value[i].size")
    ConsoleWrite("size: " & $iSizeInBytes & @CRLF)

    ; Extract the data and save to a file.
    $oSbSavePath.SetString("qa_output/")
    $oSbSavePath.Append($oJson.StringOf("value[i].name"))

    $oAttachData.Clear()
    $oAttachData.AppendEncoded($oJson.StringOf("value[i].contentBytes"),"base64")
    $oAttachData.WriteFile($oSbSavePath.GetAsString())

    ; Get the last-modified date/time and set the output file's last-mod date/time..
    $oLastMod.SetFromTimestamp($oJson.StringOf("value[i].lastModifiedDateTime"))
    $oFac.SetLastModified($oSbSavePath.GetAsString(),$oLastMod)

    ConsoleWrite("----" & @CRLF)

    $i = $i + 1
Wend

; The output of the above loop is:
; 
; 	name: fishing.pdf
; 	contentType: application/pdf
; 	size: 295680
; 	----
; 	name: testCert.cer
; 	contentType: application/octet-stream
; 	size: 1674
; 	----
;