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| import Foundation | |
| struct Gravatar { | |
| struct Defaults { | |
| static let scheme = "https" | |
| static let host = "secure.gravatar.com" | |
| static let path = "/avatar/" | |
| // unknownHash = md5("unknown@gravatar.com") | |
| static let unknownHash = "ad516503a11cd5ca435acc9bb6523536" | |
| static var baseURL: NSURL { | |
| return NSURL(scheme: scheme, host: host, path: path)! | |
| } | |
| } | |
| let canonicalURL: NSURL | |
| func urlWithSize(size: Int) -> NSURL { | |
| let components = NSURLComponents(URL: canonicalURL, resolvingAgainstBaseURL: false)! | |
| components.query = "?s=\(size)&d=404" | |
| return components.URL! | |
| } | |
| } | |
| extension Gravatar: Equatable {} | |
| func ==(lhs: Gravatar, rhs: Gravatar) -> Bool { | |
| return lhs.canonicalURL == rhs.canonicalURL | |
| } | |
| extension Gravatar { | |
| init?(_ url: NSURL) { | |
| guard let components = NSURLComponents(URL: url, resolvingAgainstBaseURL: false) else { | |
| return nil | |
| } | |
| guard let host = components.host | |
| where host.hasSuffix(".gravatar.com") else { | |
| return nil | |
| } | |
| guard let path = url.path | |
| where path.hasPrefix("/avatar/") else { | |
| return nil | |
| } | |
| components.scheme = Defaults.scheme | |
| components.host = Defaults.host | |
| components.query = nil | |
| // Treat unknown@gravatar.com as a nil url | |
| guard let hash = url.lastPathComponent | |
| where hash != Defaults.unknownHash else { | |
| return nil | |
| } | |
| guard let sanitizedURL = components.URL else { | |
| return nil | |
| } | |
| self.canonicalURL = sanitizedURL | |
| } | |
| init(hash: String) { | |
| self.canonicalURL = Defaults.baseURL.URLByAppendingPathComponent(hash) | |
| } | |
| static var unknown: Gravatar { | |
| return Gravatar(hash: Defaults.unknownHash) | |
| } | |
| func isUnknown() -> Bool { | |
| return self == Gravatar.unknown | |
| } | |
| } | |
| extension UIImageView { | |
| func setGravatar(gravatar: Gravatar?, placeholder: UIImage, animate: Bool, failure: ((NSError!) -> ())?) { | |
| guard let gravatar = gravatar else { | |
| self.image = placeholder | |
| return | |
| } | |
| let size = Int(ceil(self.frame.width * self.contentScaleFactor)) | |
| let url = gravatar.urlWithSize(size) | |
| self.downloadImage(url, | |
| placeholderImage: placeholder, | |
| success: { (image: UIImage) -> () in | |
| if animate { | |
| self.displayImageWithFadeInAnimation(image) | |
| } | |
| }, failure: { | |
| (error: NSError!) in | |
| failure?(error) | |
| }) | |
| } | |
| func setGravatar(gravatar: Gravatar?, placeholder: UIImage, animate: Bool) { | |
| setGravatar(gravatar, placeholder: placeholder, animate: animate, failure: nil); | |
| } | |
| } |
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