Dactyloidae iOS initial commit

mobile/ios/Sync/KeysPayload.swift

@@ -0,0 +1,55 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+import Foundation
+import Shared
+import SwiftyJSON
+
+open class KeysPayload: CleartextPayloadJSON {
+    override open func isValid() -> Bool {
+        return super.isValid() &&
+               self["default"].isArray()
+    }
+    
+    fileprivate func keyBundleFromPair(_ input: JSON) -> KeyBundle? {
+        if let pair: [JSON] = input.array {
+            if let encKey = pair[0].string {
+                if let hmacKey = pair[1].string {
+                    return KeyBundle(encKeyB64: encKey, hmacKeyB64: hmacKey)
+                }
+            }
+        }
+        return nil
+    }
+
+    var defaultKeys: KeyBundle? {
+        return self.keyBundleFromPair(self["default"])
+    }
+
+    var collectionKeys: [String: KeyBundle] {
+        if let collections: [String: JSON] = self["collections"].dictionary {
+            return optFilter(mapValues(collections, f: self.keyBundleFromPair))
+        }
+        return [:]
+    }
+
+    override open func equalPayloads(_ obj: CleartextPayloadJSON) -> Bool {
+        if !(obj is KeysPayload) {
+            return false
+        }
+        
+        if !super.equalPayloads(obj) {
+            return false
+        }
+        
+        let p = obj as! KeysPayload
+        if p.defaultKeys != self.defaultKeys {
+            return false
+        }
+
+        // TODO: check collections.
+        
+        return true
+    }
+}