(Swift 3,4,5...) Create Folder

In the Drive API, a folder is essentially a file — one identified by the special folder MIME type application/vnd.google-apps.folder

See Google Drive Files: create for more details.

Also See Working with Folders for more details.

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

func chilkatTest() {
    // Creating a folder is technically an upload of a 0-length file
    // having a MIME type of "application/vnd.google-apps.folder"

    var success: Bool = 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 scope.

    let gAuth = CkoAuthGoogle()!
    gAuth.accessToken = "GOOGLE-DRIVE-ACCESS-TOKEN"

    let rest = CkoRest()!

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

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

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

    // Specify each part of the request.

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

    let json = CkoJsonObject()!
    json.append("name", value: "testFolder")
    json.append("description", value: "A folder to contain test files.")
    json.append("mimeType", value: "application/vnd.google-apps.folder")
    rest.setMultipartBodyString(json.emit())

    // The 2nd part would be the file content.
    // Since this is a folder, skip the 2nd part entirely and go straight to the upload..

    var jsonResponse: String? = rest.fullRequestMultipart("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(jsonResponse)

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

    // A successful response looks like this:
    // {
    //   "kind": "drive#file",
    //   "id": "0B53Q6OSTWYolY2tPU1BnYW02T2c",
    //   "name": "testFolder",
    //   "mimeType": "application/vnd.google-apps.folder"
    // }

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

}