feat: Seperates connection stream and moves connection manager out of the connection service module.

Sources/MQTTConnectionService/MQTTConnectionService.swift

@@ -1,44 +1,9 @@
 import Dependencies
-import DependenciesMacros
-import Foundation
 import Logging
 import Models
+import MQTTConnectionManager
 import ServiceLifecycle
 
-/// Represents the interface needed for the ``MQTTConnectionService``.
-///
-/// See ``MQTTConnectionManagerLive`` module for live implementation.
-@DependencyClient
-public struct MQTTConnectionManager: Sendable {
-
-  public var connect: @Sendable () async throws -> AsyncStream<Event>
-  public var shutdown: () -> Void
-
-  public enum Event: Sendable {
-    case connected
-    case disconnected
-    case shuttingDown
-  }
-}
-
-extension MQTTConnectionManager: TestDependencyKey {
-  public static var testValue: MQTTConnectionManager {
-    Self()
-  }
-}
-
-public extension DependencyValues {
-
-  /// A dependency that is responsible for managing the connection to
-  /// an MQTT broker.
-  var mqttConnectionManager: MQTTConnectionManager {
-    get { self[MQTTConnectionManager.self] }
-    set { self[MQTTConnectionManager.self] = newValue }
-  }
-}
-
-// MARK: - MQTTConnectionService
-
 public actor MQTTConnectionService: Service {
   @Dependency(\.mqttConnectionManager) var manager
 
@@ -55,13 +20,15 @@ public actor MQTTConnectionService: Service {
   /// connection.
   public func run() async throws {
     try await withGracefulShutdownHandler {
-      let stream = try await manager.connect()
-      for await event in stream.cancelOnGracefulShutdown() {
+      try await manager.connect()
+      for await event in try manager.stream().cancelOnGracefulShutdown() {
         // We don't really need to do anything with the events, so just logging
         // for now.  But we need to iterate on an async stream for the service to
         // continue to run and handle graceful shutdowns.
         logger?.trace("Received connection event: \(event)")
       }
+      // when we reach here we are shutting down, so we shutdown
+      // the manager.
       manager.shutdown()
     } onGracefulShutdown: {
       self.logger?.trace("Received graceful shutdown.")