Fixes stringified facts from verification

Sources/Integration/Session/Session+Contacts.swift

@@ -70,11 +70,22 @@ extension Session {
 
         let ud = client.userDiscovery!
 
-        guard let fact = contact.email ?? contact.phone else {
+        let hasEmail = contact.email != nil
+        let hasPhone = contact.phone != nil
+
+        guard hasEmail || hasPhone else {
             ud.lookup(forUserId: contact.userId, resultClosure)
             return
         }
 
+        var fact: String
+
+        if hasEmail {
+            fact = "\(FactType.email.prefix)\(contact.email!)"
+        } else {
+            fact = "\(FactType.phone.prefix)\(contact.phone!)"
+        }
+
         do {
             try ud.search(fact: fact, resultClosure)
         } catch {

Sources/Models/FactType.swift

@@ -18,4 +18,17 @@ public enum FactType: Int {
             return "Username"
         }
     }
+
+    public var prefix: String {
+        switch self {
+        case .email:
+            return "E"
+        case .nickname:
+            return "N"
+        case .phone:
+            return "P"
+        case .username:
+            return "U"
+        }
+    }
 }