Add unlock complication, improve info display

Sesame/ClientState.swift

@@ -111,7 +111,57 @@ enum ClientState {
     }
 
     var actionText: String {
-        "Unlock"
+        switch self {
+        case .noKeyAvailable:
+            return "No key"
+        case .requestingStatus:
+            return "Checking..."
+        case .deviceNotAvailable(let connectionError):
+            switch connectionError {
+            case .serverNotReached:
+                return "Server not found"
+            case .deviceDisconnected:
+                return "Device disconnected"
+            }
+        case .ready:
+            return "Unlock"
+        case .waitingForResponse:
+            return "Unlocking..."
+        case .messageRejected(let rejectionCause):
+            switch rejectionCause {
+            case .invalidDeviceId:
+                return "Invalid device ID"
+            case .invalidCounter:
+                return "Invalid counter"
+            case .invalidTime:
+                return "Invalid timestamp"
+            case .invalidAuthentication:
+                return "Invalid signature"
+            case .timeout:
+                return "Device not responding"
+            case .missingKey:
+                return "Device key missing"
+            }
+        case .responseRejected(let rejectionCause):
+            switch rejectionCause {
+            case .invalidDeviceId:
+                return "Invalid device id (response)"
+            case .invalidCounter:
+                return "Invalid counter (response)"
+            case .invalidTime:
+                return "Invalid time (response)"
+            case .invalidAuthentication:
+                return "Invalid signature (response)"
+            case .timeout:
+                return "Timed out (response)"
+            case .missingKey:
+                return "Missing key (response)"
+            }
+        case .openSesame:
+            return "Unlocked"
+        case .internalError(let string):
+            return string
+        }
     }
 
     var requiresDescription: Bool {
@@ -144,7 +194,7 @@ enum ClientState {
     
     var allowsAction: Bool {
         switch self {
-        case .noKeyAvailable:
+        case .noKeyAvailable, .waitingForResponse:
             return false
         default:
             return true