Visual FoxPro

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. Visual FoxPro

LOCAL lnSuccess
LOCAL loGAuth
LOCAL loRest
LOCAL lnBAutoReconnect
LOCAL loJson
LOCAL lcJsonResponse

lnSuccess = 0

*  This example will upload a file to Google Drive.
lnSuccess = 1

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

loGAuth = CreateObject('Chilkat.AuthGoogle')
loGAuth.Scope = "https://www.googleapis.com/auth/drive"
loGAuth.SubEmailAddress = "some.user@example.com"
loGAuth.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

loRest = CreateObject('Chilkat.Rest')

*  Connect using TLS.
lnBAutoReconnect = 1
lnSuccess = loRest.Connect("www.googleapis.com",443,1,lnBAutoReconnect)

*  Provide the authentication credentials (i.e. the access key)
lnSuccess = loRest.SetAuthGoogle(loGAuth)

*  A multipart upload to Google Drive needs a multipart/related Content-Type
lnSuccess = loRest.AddHeader("Content-Type","multipart/related")

*  Specify each part of the request.

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

loJson = CreateObject('Chilkat.JsonObject')
lnSuccess = loJson.AddStringAt(-1,"title","helloWorld.txt")
lnSuccess = loJson.AddStringAt(-1,"description","A simple text file that says Hello World.")
lnSuccess = loJson.AddStringAt(-1,"mimeType","text/plain")
lnSuccess = loRest.SetMultipartBodyString(loJson.Emit())

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

*  POST https://www.googleapis.com/upload/drive/v2/files
lcJsonResponse = loRest.FullRequestMultipart("POST","/upload/drive/v2/files?uploadType=multipart")
IF (loRest.LastMethodSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loGAuth
    RELEASE loRest
    RELEASE loJson
    CANCEL
ENDIF

*  Show the JSON response.
? "Response Status Code: " + STR(loRest.ResponseStatusCode)
? "Json Response: " + lcJsonResponse

RELEASE loGAuth
RELEASE loRest
RELEASE loJson