(VB.NET UWP/WinRT) Create Google Photos Media Item using Upload Token

This is the 2nd step in uploading a photo to a Google Photos album. The 1st step is to upload the media data to get an upload token. This step is to use the upload token to add the media item to an album.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads Chilkat for the Universal Windows Platform (UWP)

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

' Get the previously obtained access token.
' See Get Google Photos Access Token.

Dim jsonToken As New Chilkat.JsonObject
Dim success As Boolean = jsonToken.LoadFile("qa_data/tokens/googlePhotos.json")
If (success = False) Then
    Debug.WriteLine(jsonToken.LastErrorText)
    Exit Sub
End If


Dim http As New Chilkat.Http

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

' For more information, see Google Photos Upload Media REST API Documentation

' Build a JSON body that looks like this:
' {
'   "albumId": "ALBUM_ID",
'   "newMediaItems": [
'     {
'       "description": "ITEM_DESCRIPTION",
'       "simpleMediaItem": {
'         "uploadToken": "UPLOAD_TOKEN"
'       }
'     }
'    , ...
'   ]
' }

' Use this online tool to generate the code from sample JSON: 
' Generate Code to Create JSON

' Build the above JSON:
Dim json As New Chilkat.JsonObject
json.UpdateString("albumId","ALBUM_ID")
json.UpdateString("newMediaItems[0].description","Photo of Penguins")
json.UpdateString("newMediaItems[0].simpleMediaItem.uploadToken","UPLOAD_TOKEN")

Dim resp As Chilkat.HttpResponse = Await http.PostJsonAsync("https://photoslibrary.googleapis.com/v1/mediaItems:batchCreate",json.Emit())
If (http.LastMethodSuccess = False) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


' Examine the response status code.  Success is indicated by a status code of 200.
Debug.WriteLine("response status code: " & resp.StatusCode)

json.Load(resp.BodyStr)
json.EmitCompact = False
Debug.WriteLine(json.Emit())



' Sample response:

' {
'   "newMediaItemResults": [
'     {
'       "uploadToken": "CAISiQMASsyg4M/x ... CIKFRzD3l8OpFJMRzMsd00D5w",
'       "status": {
'         "message": "OK"
'       },
'       "mediaItem": {
'         "id": "AKcbugGwtCih2tdl3s1-NMvZFaco3W7XnRwvwtj02J9DJyl6JmrLZDVUFcxQl4AT04LaNrPpsrojeTsDSzOVOF5IgKefD0Y-MQ",
'         "description": "Photo of Penguins",
'         "productUrl": "https://photos.google.com/lr/photo/AKcbugGwtCih2tdl3s1-NMvZFaco3W7XnRwvwtj02J9DJyl6JmrLZDVUFcxQl4AT04LaNrPpsrojeTsDSzOVOF5IgKefD0Y-MQ",
'         "mimeType": "image/jpeg",
'         "mediaMetadata": {
'           "creationTime": "2008-02-18T05:07:31Z",
'           "width": "1024",
'           "height": "768"
'         },
'         "filename": "penguins.jpg"
'       }
'     }
'   ]
' }


' Use this online tool to generate parsing code from sample JSON: 
' Generate Parsing Code from JSON


Dim i As Integer
Dim count_i As Integer
Dim uploadToken As String
Dim statusMessage As String
Dim mediaItemId As String
Dim mediaItemDescription As String
Dim mediaItemProductUrl As String
Dim mediaItemMimeType As String
Dim mediaItemMediaMetadataCreationTime As String
Dim mediaItemMediaMetadataWidth As String
Dim mediaItemMediaMetadataHeight As String
Dim mediaItemFilename As String

i = 0
count_i = json.SizeOfArray("newMediaItemResults")
While i < count_i
    json.I = i
    uploadToken = json.StringOf("newMediaItemResults[i].uploadToken")
    statusMessage = json.StringOf("newMediaItemResults[i].status.message")
    mediaItemId = json.StringOf("newMediaItemResults[i].mediaItem.id")
    mediaItemDescription = json.StringOf("newMediaItemResults[i].mediaItem.description")
    mediaItemProductUrl = json.StringOf("newMediaItemResults[i].mediaItem.productUrl")
    mediaItemMimeType = json.StringOf("newMediaItemResults[i].mediaItem.mimeType")
    mediaItemMediaMetadataCreationTime = json.StringOf("newMediaItemResults[i].mediaItem.mediaMetadata.creationTime")
    mediaItemMediaMetadataWidth = json.StringOf("newMediaItemResults[i].mediaItem.mediaMetadata.width")
    mediaItemMediaMetadataHeight = json.StringOf("newMediaItemResults[i].mediaItem.mediaMetadata.height")
    mediaItemFilename = json.StringOf("newMediaItemResults[i].mediaItem.filename")
    i = i + 1
End While