Tunnel: Require passing a state to the constructor

Signed-off-by: Samuel Holland <samuel@sholland.org>

app/src/main/java/com/wireguard/android/model/Tunnel.java

@@ -31,15 +31,16 @@ public class Tunnel extends BaseObservable implements Keyed<String> {
     private final ConfigStore configStore;
     private final String name;
     private Config config;
-    private State state = State.UNKNOWN;
+    private State state;
     private Statistics statistics;
 
     Tunnel(@NonNull final Backend backend, @NonNull final ConfigStore configStore,
-           @NonNull final String name, @Nullable final Config config) {
+           @NonNull final String name, @Nullable final Config config, @NonNull final State state) {
         this.backend = backend;
         this.configStore = configStore;
         this.name = name;
         this.config = config;
+        this.state = state;
     }
 
     public static boolean isNameValid(final CharSequence name) {

app/src/main/java/com/wireguard/android/model/TunnelManager.java

@@ -48,14 +48,14 @@ public final class TunnelManager {
         this.preferences = preferences;
     }
 
-    private Tunnel add(final String name, final Config config) {
-        final Tunnel tunnel = new Tunnel(backend, configStore, name, config);
+    private Tunnel add(final String name, final Config config, final State state) {
+        final Tunnel tunnel = new Tunnel(backend, configStore, name, config, state);
         tunnels.add(tunnel);
         return tunnel;
     }
 
     private Tunnel add(final String name) {
-        return add(name, null);
+        return add(name, null, State.UNKNOWN);
     }
 
     public CompletionStage<Tunnel> create(final String name, final Config config) {
@@ -66,7 +66,8 @@ public final class TunnelManager {
             final String message = "Tunnel " + name + " already exists";
             return CompletableFuture.failedFuture(new IllegalArgumentException(message));
         }
-        return configStore.create(name, config).thenApply(savedConfig -> add(name, savedConfig));
+        return configStore.create(name, config)
+                .thenApply(savedConfig -> add(name, savedConfig, State.DOWN));
     }
 
     public CompletionStage<Void> delete(final Tunnel tunnel) {