fix: Removes flag resolving from Confidence child instances (#149)

ConfidenceDemoApp/ConfidenceDemoApp/ConfidenceDemoApp.swift

@@ -21,7 +21,6 @@ struct ConfidenceDemoApp: App {
             let secret = ProcessInfo.processInfo.environment["CLIENT_SECRET"] ?? ""
             let confidence = Confidence.Builder(clientSecret: secret, loggerLevel: .TRACE)
                 .withContext(initialContext: ["targeting_key": ConfidenceValue(string: UUID.init().uuidString)])
-                .withRegion(region: .europe)
                 .build()
 
             let status = Status()

Sources/Confidence/Confidence.swift

@@ -262,10 +262,7 @@ public class Confidence: ConfidenceEventSender {
         }
     }
 
-    /**
-    Sets the initial Context.
-    */
-    public func withContext(_ context: ConfidenceStruct) -> Self {
+    public func withContext(_ context: ConfidenceStruct) -> ConfidenceEventSender {
         return Self.init(
             clientSecret: clientSecret,
             region: region,

Sources/Confidence/ConfidenceContextProvider.swift

@@ -4,5 +4,8 @@ import Foundation
 A Contextual implementer returns the current context
 */
 public protocol ConfidenceContextProvider {
+    /**
+    Returns the current context, including the ancestors' context data
+    */
     func getContext() -> ConfidenceStruct
 }

Sources/Confidence/ConfidenceEventSender.swift

@@ -3,7 +3,7 @@ import Foundation
 /**
 Sends events to Confidence. Contextual data is appended to each event
 */
-public protocol ConfidenceEventSender: Contextual {
+public protocol ConfidenceEventSender: ConfidenceContextProvider {
     /**
     Upon return, the event has been correctly stored and will be emitted to the backend
     according to the configured flushing logic
@@ -18,4 +18,17 @@ public protocol ConfidenceEventSender: Contextual {
     Schedule a manual flush of the event data currently stored on disk
     */
     func flush()
+    /**
+    Adds/override entry to local context data
+    */
+    func putContext(key: String, value: ConfidenceValue)
+    /**
+    Removes entry from localcontext data
+    It hides entries with this key from parents' data (without modifying parents' data)
+    */
+    func removeKey(key: String)
+    /**
+    Creates a child event sender instance that maintains access to its parent's data
+    */
+    func withContext(_ context: ConfidenceStruct) -> ConfidenceEventSender
 }