import OpenSphericalCamera

// Construct OSC generic camera
let osc = OpenSphericalCamera(ipAddress: "192.168.1.1", httpPort: 80)
// Or, Ricoh THETA S camera
let osc = ThetaCamera()

// Set OSC API level 2 (for Ricoh THETA S)
self.osc.startSession { (data, response, error) in
    if let data = data where error == nil {
        if let jsonDic = try? NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers) as! NSDictionary, results = jsonDic["results"] as? NSDictionary, sessionId = results["sessionId"] as? String {
            self.osc.setOptions(sessionId: sessionId, options: ["clientVersion": 2]) { (data, response, error) in
                self.osc.closeSession(sessionId: sessionId)
            }
        } else {
            // Assume clientVersion is equal or later than 2
        }
    }
}

// Take picture
self.osc.takePicture { (data, response, error) in
    if let data = data where error == nil {
        let jsonDic = try? NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers) as! NSDictionary
        if let jsonDic = jsonDic, rawState = jsonDic["state"] as? String, state = OSCCommandState(rawValue: rawState) {
            switch state {
            case .InProgress:
                /*
                 * Set execute commands' progressNeeded parameter true explicitly,
                 * except for getLivePreview, if you want this handler to be
                 * called back "inProgress". In any case, they are waiting for
                 * "done" or "error" internally.
                 */
            case .Done:
                if let results = jsonDic["results"] as? NSDictionary, fileUrl = results["fileUrl"] as? String {
                    self.osc.get(fileUrl) { (data, response, error) in
                        dispatch_async(dispatch_get_main_queue()) {
                            self.previewView.image = UIImage(data: data!)
                        }
                    }
                }
            case .Error:
                break // TODO
            }
        }
    }
}