gistfile1.txt

//TODO: Make this work
static func saveImageToFirebase(withImage inputImage: UIImage, andPhotoIsForProfile inputPhotoIsForProfile: Bool, andUserId inputUserId: String) {

    // Get a reference to the storage service using the default Firebase App
    let storage = Storage.storage()

    // Create a storage reference from our storage service
    let storageRef = storage.reference()

    var imageName = ""
    let imageType = "png"
    if inputPhotoIsForProfile {
        imageName = "\(inputUserId)_profile"
    } else {
        imageName = "\(inputUserId)_background"
    }

    // saves the image
    let fm = FileManager.default
    let docsurl = try! fm.url(for:.documentDirectory, in: .userDomainMask, appropriateFor: nil, create: false)
    let filePath = "\(docsurl)\(imageName).\(imageType)"

    // Convert input image to NSData
    let data = UIImagePNGRepresentation(inputImage) as NSData?
    guard let imageData: NSData = data else {fatalError()}

    // Check if file exists there already
    let doesExistAlready = doesFileExistInDocumentsDirectory(withFileName: "\(imageName).\(imageType)")
    if doesExistAlready {
        // Delete it if it alreay exists
        do {
            try fm.removeItem(atPath: filePath)
        } catch {
        
        
            //TODO: Fix, it always crashes here.        
        
            print("could not remove item")
        }
    }

    // save it with the new one

    // check if this is valid image data
    // Fails on createFile
    if fm.createFile(atPath: filePath, contents: imageData as Data, attributes: nil) {
        // gets the path to the saved image
        var localFileUrl = docsurl.appendingPathComponent("\(imageName).\(imageType)")
        let profileImageRef = storageRef.child("\(imageName).\(imageType)")

        // Upload the file to the path "images/rivers.jpg"
        profileImageRef.putFile(from: localFileUrl, metadata: nil) { metadata, error in
            if let error = error {
                // Uh-oh, an error occurred!
                print(error.localizedDescription)
            } else {
                // Metadata contains file metadata such as size, content-type, and download URL.
                let downloadURL = metadata!.downloadURL()

                if let catPictureData = NSData(contentsOf: localFileUrl) {
                    var catPicture = UIImage(data: catPictureData as Data)
                    //TODO: Set the image in the NavigationController with this image
                    //                    NavigationBarController.setProfileLogoutButton(withViewController: inputViewController)
                }
            }
        }
    }
    }