Initial Commit

Sources/RelayClient/Interface.swift

@@ -0,0 +1,20 @@
+import Foundation
+import Models
+import NIO
+
+public struct RelayClient {
+  public var toggle: (Relay) -> EventLoopFuture<Void>
+  public var turnOn: (Relay) -> EventLoopFuture<Void>
+  public var turnOff: (Relay) -> EventLoopFuture<Void>
+  
+  public init(
+    toggle: @escaping (Relay) -> EventLoopFuture<Void>,
+    turnOn: @escaping (Relay) -> EventLoopFuture<Void>,
+    turnOff: @escaping (Relay) -> EventLoopFuture<Void>
+  ) {
+    self.toggle = toggle
+    self.turnOn = turnOn
+    self.turnOff = turnOff
+  }
+}
+

Sources/RelayClient/Live.swift

@@ -0,0 +1,37 @@
+import Models
+import MQTTNIO
+import NIO
+
+extension RelayClient {
+  
+  public static func live(client: MQTTClient) -> RelayClient {
+    .init(
+      toggle: { relay in
+        client.publish(relay: relay, state: .toggle)
+      },
+      turnOn: { relay in
+        client.publish(relay: relay, state: .on)
+      },
+      turnOff: { relay in
+        client.publish(relay: relay, state: .off)
+      }
+    )
+  }
+}
+
+extension Relay {
+  enum State: String {
+    case toggle, on, off
+  }
+}
+
+extension MQTTClient {
+  
+  func publish(relay: Relay, state: Relay.State, qos: MQTTQoS = .atLeastOnce) -> EventLoopFuture<Void> {
+    publish(
+      to: relay.topic,
+      payload: ByteBufferAllocator().buffer(string: state.rawValue),
+      qos: qos
+    )
+  }
+}