Swift

Upload Application Specific Data

See more Google Drive Examples

Uploads a text file (application specific data) where the contents of the file are contained in a string variable. Swift

func chilkatTest() {
    var success: Bool = false

    success = true

    // It 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 application specific data scope.
    let jsonToken = CkoJsonObject()!
    success = jsonToken.loadFile(path: "qa_data/tokens/googleDriveAppData.json")

    let gAuth = CkoAuthGoogle()!
    gAuth.accessToken = jsonToken.string(of: "access_token")

    let rest = CkoRest()!

    // Connect using TLS.
    var bAutoReconnect: Bool = true
    success = rest.connect(hostname: "www.googleapis.com", port: 443, tls: true, autoReconnect: bAutoReconnect)

    // Provide the authentication credentials (i.e. the access token)
    rest.setAuthGoogle(authProvider: gAuth)

    // A multipart upload to Google Drive needs a multipart/related Content-Type
    rest.addHeader(name: "Content-Type", value: "multipart/related")

    // Specify each part of the request.

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

    let json = CkoJsonObject()!
    json.emitCompact = false

    json.updateString(jsonPath: "name", value: "helloWorld.txt")
    json.updateString(jsonPath: "description", value: "A simple text file that says Hello World.")
    json.updateString(jsonPath: "mimeType", value: "text/plain")
    // Specifiy the application-specific data folder.
    json.updateString(jsonPath: "parents[0]", value: "appDataFolder")
    rest.setMultipartBodyString(bodyText: json.emit())

    print("\(json.emit()!)")

    // The JSON looks like this:
    // {
    //   "name": "helloWorld.txt",
    //   "description": "A simple text file that says Hello World.",
    //   "mimeType": "text/plain",
    //   "parents": [
    //     "appDataFolder"
    //   ]
    // }

    // The 2nd part is the file content.
    // In this case, we'll upload a simple text file containing "Hello World!"
    rest.partSelector = "2"
    rest.addHeader(name: "Content-Type", value: "text/plain")

    var fileContents: String? = "Hello World!"
    rest.setMultipartBodyString(bodyText: fileContents)

    var jsonResponse: String? = rest.fullRequestMultipart(httpVerb: "POST", uriPath: "/upload/drive/v3/files?uploadType=multipart")
    if rest.lastMethodSuccess != true {
        print("\(rest.lastErrorText!)")
        return
    }

    // A successful response will have a status code equal to 200.
    if rest.responseStatusCode.intValue != 200 {
        print("response status code = \(rest.responseStatusCode.intValue)")
        print("response status text = \(rest.responseStatusText!)")
        print("response header: \(rest.responseHeader!)")
        print("response JSON: \(jsonResponse!)")
        return
    }

    // Show the JSON response.
    json.load(json: jsonResponse)

    // Show the full JSON response.
    json.emitCompact = false
    print("\(json.emit()!)")

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

    // Get the fileId:
    print("fileId: \(json.string(of: "id")!)")

}