(PureBasic) Create a File in a Folder

Creates (uploads) a file to be located in a particular folder.

See Google Drive Files: create for more details.

Also See Google Drive Multipart Upload for more details.

Chilkat PureBasic Module Download Chilkat PureBasic Module

IncludeFile "CkAuthGoogle.pb"
IncludeFile "CkRest.pb"
IncludeFile "CkJsonObject.pb"
IncludeFile "CkJsonArray.pb"

Procedure ChilkatExample()

    success.i = 1

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

    ; This example uses a previously obtained access token having permission for the 
    ; Google Drive scope.

    gAuth.i = CkAuthGoogle::ckCreate()
    If gAuth.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkAuthGoogle::setCkAccessToken(gAuth, "GOOGLE-DRIVE-ACCESS-TOKEN")

    rest.i = CkRest::ckCreate()
    If rest.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    ; Connect using TLS.
    bAutoReconnect.i = 1
    success = CkRest::ckConnect(rest,"www.googleapis.com",443,1,bAutoReconnect)

    ; Provide the authentication credentials (i.e. the access token)
    CkRest::ckSetAuthGoogle(rest,gAuth)

    ; -------------------------------------------------------------------------
    ; A multipart upload to Google Drive needs a multipart/related Content-Type
    CkRest::ckAddHeader(rest,"Content-Type","multipart/related")

    ; Specify each part of the request.

    ; The 1st part is JSON with information about the file.
    CkRest::setCkPartSelector(rest, "1")
    CkRest::ckAddHeader(rest,"Content-Type","application/json; charset=UTF-8")

    json.i = CkJsonObject::ckCreate()
    If json.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkJsonObject::ckAppendString(json,"name","testHello.txt")
    CkJsonObject::ckAppendString(json,"description","A simple file that says Hello World.")
    CkJsonObject::ckAppendString(json,"mimeType","text/plain")

    ; To place the file in a folder, we must add a parents[] array to the JSON
    ; and list the folder id's.  It's possible for a file to be in multiple folders at once
    ; if it has more than one parent.  If no parents are specified, then the file is created
    ; in the My Drive folder.  
    ; Note: We'll assume we already have the id if the folder.  It is the id's that are specified here,
    ; not the folder names.
    parents.i = CkJsonObject::ckAppendArray(json,"parents")
    folderId.s = "0B53Q6OSTWYolY2tPU1BnYW02T2c"
    CkJsonArray::ckAddStringAt(parents,-1,folderId)
    CkJsonArray::ckDispose(parents)

    CkRest::ckSetMultipartBodyString(rest,CkJsonObject::ckEmit(json))

    ; The 2nd part is the file content, which will contain "Hello World!"
    CkRest::setCkPartSelector(rest, "2")
    CkRest::ckAddHeader(rest,"Content-Type","text/plain")

    fileContents.s = "Hello World!"
    CkRest::ckSetMultipartBodyString(rest,fileContents)

    jsonResponse.s = CkRest::ckFullRequestMultipart(rest,"POST","/upload/drive/v3/files?uploadType=multipart")
    If CkRest::ckLastMethodSuccess(rest) <> 1
        Debug CkRest::ckLastErrorText(rest)
        CkAuthGoogle::ckDispose(gAuth)
        CkRest::ckDispose(rest)
        CkJsonObject::ckDispose(json)
        ProcedureReturn
    EndIf

    ; A successful response will have a status code equal to 200.
    If CkRest::ckResponseStatusCode(rest) <> 200
        Debug "response status code = " + Str(CkRest::ckResponseStatusCode(rest))
        Debug "response status text = " + CkRest::ckResponseStatusText(rest)
        Debug "response header: " + CkRest::ckResponseHeader(rest)
        Debug "response JSON: " + jsonResponse
        CkAuthGoogle::ckDispose(gAuth)
        CkRest::ckDispose(rest)
        CkJsonObject::ckDispose(json)
        ProcedureReturn
    EndIf

    ; Show the JSON response.
    CkJsonObject::ckLoad(json,jsonResponse)

    ; Show the full JSON response.
    CkJsonObject::setCkEmitCompact(json, 0)
    Debug CkJsonObject::ckEmit(json)

    ; A successful response looks like this:
    ; {
    ;   "kind": "drive#file",
    ;   "id": "0B53Q6OSTWYoldmJ0Z3ZqT2x5MFk",
    ;   "name": "Untitled",
    ;   "mimeType": "text/plain"
    ; }

    ; Get the fileId:
    Debug "fileId: " + CkJsonObject::ckStringOf(json,"id")


    CkAuthGoogle::ckDispose(gAuth)
    CkRest::ckDispose(rest)
    CkJsonObject::ckDispose(json)


    ProcedureReturn
EndProcedure