(Swift 2) Upload Binary File from Memory

This example demonstrates how to upload a binary file from memory. It uploads the file to a subdirectory of our choosing.

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

func chilkatTest() {
    var success: Bool = true

    // 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.

    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 file.
    rest.PartSelector = "1"
    rest.AddHeader("Content-Type", value: "application/json; charset=UTF-8")

    // Construct the JSON that will contain the metadata about the file data to be uploaded...
    let json = CkoJsonObject()
    json.AppendString("name", value: "hedgehogs.jpg")
    json.AppendString("description", value: "A cute photo of two hedgehogs.")
    json.AppendString("mimeType", value: "image/jpeg")

    // To place the file in a folder, we must add a parents[] array to the JSON
    // and add the folder ID.  
    // In a previous example (see Build Local Metadata Cache
    // we built a local cache to make it easy to lookup file IDs given a file path.
    // Let's find the file ID for the folder "testFolder/abc/123"
    let gdCache = CkoCache()
    gdCache.Level = 0
    gdCache.AddRoot("C:/ckCache/googleDrive")

    var folderId: String? = gdCache.FetchText("testFolder/abc/123")
    if gdCache.LastMethodSuccess != true {
        print("Filepath not found in cache.")
        return
    }

    var parents: CkoJsonArray? = json.AppendArray("parents")
    parents!.AddStringAt(-1, value: folderId)
    parents = nil

    rest.SetMultipartBodyString(json.Emit())

    // The 2nd part is the file content, which will contain the binary image data.
    rest.PartSelector = "2"
    rest.AddHeader("Content-Type", value: "image/jpeg")

    let fac = CkoFileAccess()
    var jpgBytes: NSData
    // Read a JPG file from the local filesystem.
    jpgBytes = fac.ReadEntireFile("qa_data/jpg/hedgehogs.jpg")

    // Add the bytes to our upload
    rest.SetMultipartBodyBinary(jpgBytes)

    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": "0B53Q6OSTWYoldmJ0Z3ZqT2x5MFk",
    //   "name": "hedgehogs.jpg",
    //   "mimeType": "image/jpeg"
    // }

    // Get the fileId:
    print("fileId: \(json.StringOf("id"))")

}