Visual FoxPro

Box.com Upload File

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Demonstrates how to upload a file to box.com. Visual FoxPro

LOCAL lnSuccess
LOCAL loRest
LOCAL loOauth2
LOCAL lnBAutoReconnect
LOCAL loJsonAttr
LOCAL loFileDataObj
LOCAL lcResponseBody

lnSuccess = 0

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

*  ------------------------------------------------------------------------------------------
*  Important:
*  See this information about Box.com Service Accounts
*  Box.com will automatically generate a Service Account where the name of the account is the name of your App.� 
*  When you make API calls, it is for this service account, and the files that exist and what you see are not the same as your normal account.
*  ------------------------------------------------------------------------------------------

loRest = CreateObject('Chilkat.Rest')

*    Provide a previously obtained OAuth2 access token.
loOauth2 = CreateObject('Chilkat.OAuth2')
loOauth2.AccessToken = "BOX_ACCESS_TOKEN"
loRest.SetAuthOAuth2(loOauth2)

*  First, make the initial connection.
*  A single REST object, once connected, can be used for many Box REST API calls.
*  The auto-reconnect indicates that if the already-established HTTPS connection is closed,
*  then it will be automatically re-established as needed.
lnBAutoReconnect = 1

*  ----------------------------------------------------------------------
*  IMPORTANT: Note that the domain is "upload.box.com", not "api.box.com"
*  ----------------------------------------------------------------------
lnSuccess = loRest.Connect("upload.box.com",443,1,lnBAutoReconnect)
IF (lnSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loRest
    RELEASE loOauth2
    CANCEL
ENDIF

*  The request body uses the "multipart/form-data" format to transmit two "parts". 
*  The first part is called "attributes" and contains a JSON object with information about the file, including the name of the file 
*  and the ID of the parent folder. The second part contains the contents of the file. 
*  (Note that the name of the second "part" is ignored.)

loRest.AddHeader("Content-Type","multipart/form-data")

*  Provide the content for each part of the request...

*  First the JSON attributes.  Use "0" for the root folder.
*    {"name":"penguins.jpg", "parent":{"id":"0"}}
loJsonAttr = CreateObject('Chilkat.JsonObject')
loJsonAttr.UpdateString("name","penguins.jpg")
loJsonAttr.UpdateString("parent.id","0")

loRest.PartSelector = "1"
loRest.AddHeader("Content-Disposition",'form-data; name="attributes"; ')
loRest.SetMultipartBodyString(loJsonAttr.Emit())

loRest.PartSelector = "2"
loRest.AddHeader("Content-Disposition",'form-data; name="file"; filename="penguins.jpg"')
*  "application/octet-stream" can be safely used for any type file..
loRest.AddHeader("Content-Type","application/octet-stream")

*  Load the file into a binary data object, and then upload..
loFileDataObj = CreateObject('Chilkat.BinData')
loFileDataObj.LoadFile("qa_data/jpg/penguins.jpg")
loRest.SetMultipartBodyBd(loFileDataObj)

*  Restore the PartSelector to "0" (for safety, in case something else sends another request on this object)
loRest.PartSelector = "0"

*  Send the multipart/form-data request, which uploads the file contained in fileDataObj
lcResponseBody = loRest.FullRequestMultipart("POST","/api/2.0/files/content")
IF (loRest.LastMethodSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loRest
    RELEASE loOauth2
    RELEASE loJsonAttr
    RELEASE loFileDataObj
    CANCEL
ENDIF

*  A 201 is received for a successful upload
IF (loRest.ResponseStatusCode <> 201) THEN
    ? "Box.com upload failed."
    ? "Request header:"
    ? loRest.LastRequestHeader
    ? "---"
    ? "Response status code = " + STR(loRest.ResponseStatusCode)
    ? "Response body:"
    ? lcResponseBody
    RELEASE loRest
    RELEASE loOauth2
    RELEASE loJsonAttr
    RELEASE loFileDataObj
    CANCEL
ENDIF

? "File uploaded."

RELEASE loRest
RELEASE loOauth2
RELEASE loJsonAttr
RELEASE loFileDataObj