B4X

Google Drive Multipart Upload String

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Demonstrates a file upload to Google Drive where the contents of the file are contained in a string variable. B4X

Dim success As Boolean = False

'  This example will upload a file to Google Drive.
success = True

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

Dim gAuth As ChilkatAuthGoogle
gAuth.Initialize("gAuth")
gAuth.Scope = "https://www.googleapis.com/auth/drive"
gAuth.SubEmailAddress = "some.user@example.com"
gAuth.ExpireNumSeconds = 3600

'  Obtain an access token as shown in one of the following examples:
'  See Get Access Token using a Service Account JSON Key
'  See Get Access Token using a P12 File

Dim rest As ChilkatRest
rest.Initialize("rest")

'  Connect using TLS.
Dim bAutoReconnect As Boolean = True
success = rest.Connect("www.googleapis.com", 443, True, bAutoReconnect)

'  Provide the authentication credentials (i.e. the access key)
success = rest.SetAuthGoogle(gAuth)

'  A multipart upload to Google Drive needs a multipart/related Content-Type
success = rest.AddHeader("Content-Type", "multipart/related")

'  Specify each part of the request.

'  The 1st part is JSON with information about the file.
rest.PartSelector = "1"
success = rest.AddHeader("Content-Type", "application/json; charset=UTF-8")

Dim json As ChilkatJsonObject
json.Initialize
success = json.AddStringAt(-1, "title", "helloWorld.txt")
success = json.AddStringAt(-1, "description", "A simple text file that says Hello World.")
success = json.AddStringAt(-1, "mimeType", "text/plain")
success = rest.SetMultipartBodyString(json.Emit)

'  The 2nd part is the file content.
'  In this case, we'll upload a simple text file containing "Hello World!"
rest.PartSelector = "2"
success = rest.AddHeader("Content-Type", "text/plain")
success = rest.SetMultipartBodyString("Hello World!")

'  POST https://www.googleapis.com/upload/drive/v2/files
Dim jsonResponse As String = rest.FullRequestMultipart("POST", "/upload/drive/v2/files?uploadType=multipart")
If rest.LastMethodSuccess <> True Then
    Log(rest.LastErrorText)
    Return
End If


'  Show the JSON response.
Log("Response Status Code: " & rest.ResponseStatusCode)
Log("Json Response: " & jsonResponse)