Initial

Signed-off-by: Hans Kokx <hans.d.kokx@gmail.com>

misc/app_env.dart

@@ -0,0 +1,55 @@
+import "package:flutter/foundation.dart";
+import "package:flutter_dotenv/flutter_dotenv.dart";
+
+class AppEnv {
+  /// Fetches the environment variable value for the given [EnvVar]. If the
+  /// value is not set, defaults to an empty string.
+  static String valueOf(EnvVar val) {
+    return dotenv.maybeGet(val.key) ?? "";
+  }
+
+  /// Returns [true] if all of the [EnvVar] variables are set.
+  static bool get hasEnv =>
+      dotenv.isEveryDefined(EnvVar.values.map((e) => e.key).toList());
+
+  static Future<void> init() async {
+    await dotenv.load();
+  }
+
+  static const FlutterMode flutterMode = kDebugMode
+      ? FlutterMode.debug
+      : kReleaseMode
+          ? FlutterMode.release
+          : kProfileMode
+              ? FlutterMode.profile
+              : FlutterMode.unknown;
+}
+
+enum FlutterMode {
+  debug,
+  profile,
+  release,
+  unknown,
+}
+
+extension EnvVarValue on EnvVar {
+  /// The value of the [EnvVar] as a string. If the environment variable is not
+  /// set, returns an empty string.
+  String get value => AppEnv.valueOf(this);
+}
+
+enum EnvVar {
+  /// The environment to use for the API calls. Returns either [dev] or [prod].
+  ///
+  /// Example `.env` configuration:
+  /// ```
+  /// API_ENVIRONMENT="dev"
+  /// ```
+  apiEnvironment("API_ENVIRONMENT"),
+  ;
+
+  /// The environment variable to use when retrieving the value of this [EnvVar].
+  final String key;
+
+  const EnvVar(this.key);
+}