feat: Removing old libraries

Sources/Models/EnvVars.swift

@@ -0,0 +1,69 @@
+import Foundation
+
+/// Holds common settings for connecting to your MQTT broker.  The default values can be used,
+/// they can be loaded from the shell environment, or from a file located in the root directory.
+///
+/// This allows us to keep sensitve settings out of the repository.
+public struct EnvVars: Codable, Equatable, Sendable {
+
+  /// The current app environment.
+  public var appEnv: AppEnv
+
+  /// The MQTT host.
+  public var host: String
+
+  /// The MQTT port.
+  public var port: String?
+
+  /// The identifier to use when connecting to the MQTT broker.
+  public var identifier: String
+
+  /// The MQTT user name.
+  public var userName: String?
+
+  /// The MQTT user password.
+  public var password: String?
+
+  /// Create a new ``EnvVars``
+  ///
+  /// - Parameters:
+  ///   - appEnv: The current application environment
+  ///   - host: The MQTT host.
+  ///   - port: The MQTT port.
+  ///   - identifier: The identifier to use when connecting to the MQTT broker.
+  ///   - userName: The MQTT user name to connect to the broker with.
+  ///   - password: The MQTT user password to connect to the broker with.
+  public init(
+    appEnv: AppEnv = .development,
+    host: String = "127.0.0.1",
+    port: String? = "1883",
+    identifier: String = "dewPoint-controller",
+    userName: String? = "mqtt_user",
+    password: String? = "secret!"
+  ) {
+    self.appEnv = appEnv
+    self.host = host
+    self.port = port
+    self.identifier = identifier
+    self.userName = userName
+    self.password = password
+  }
+
+  /// Custom coding keys.
+  private enum CodingKeys: String, CodingKey {
+    case appEnv = "APP_ENV"
+    case host = "MQTT_HOST"
+    case port = "MQTT_PORT"
+    case identifier = "MQTT_IDENTIFIER"
+    case userName = "MQTT_USERNAME"
+    case password = "MQTT_PASSWORD"
+  }
+
+  /// Represents the different app environments.
+  public enum AppEnv: String, Codable, Sendable {
+    case development
+    case production
+    case staging
+    case testing
+  }
+}