feat(iap): add freemium unlock via one-time in-app purchase

Adds a permanent, non-consumable premium unlock (EstadoEntitlement + PuertoCompras/ServicioComprasPlayBilling) that removes ads and unlocks alarm vacations, alarms past a 5-alarm free cap, recording start, and full Android Auto browsing. The phone equalizer stays free for everyone. - Entitlement is prefs-backed (compra_premium_v1), fail-open, and resolvable headlessly via esPremiumPersistido() for the Android Auto audio handler, which registers before runApp. - Android Auto reduced mode keeps the real root folder labels for free users; browsing into any of them (and playFromMediaId/playFromSearch/ skipToNext/skipToPrevious) is blocked at the getChildren/servicio_audio choke points, with a locked "Función Premium" item as the backstop. Current-station play/pause/stop stays untouched. A free -> premium transition actively invalidates the head unit's cached browse tree. - Ads (top banner + capped interstitial before adding a station or an alarm) are gated behind entitlement via ServicioAnuncios, using official Google test ad unit IDs pending AdMob provisioning. - Alarm cap UX shows an explanatory message with a secondary unlock action rather than a bare paywall jump; existing data is grandfathered. - 4 new localization keys translated across all 13 supported locales. Co-located tests use strict TDD (RED test before implementation) for every new pure-logic unit; full existing suite passes unchanged.
2026-08-10 20:37:07 +02:00
parent f4a1fac45a
commit aa0b242374
77 changed files with 3757 additions and 72 deletions
@@ -0,0 +1,85 @@
+import 'package:flutter/material.dart';
+import 'package:google_mobile_ads/google_mobile_ads.dart';
+import 'package:provider/provider.dart';
+
+import '../estado/estado_entitlement.dart';
+import '../servicios/servicio_anuncios.dart';
+
+/// Entitlement-aware top-banner slot (Design ADR-6, ad-display spec
+/// "Persistent Top Banner, Never Overlapping Content"). Collapses to
+/// `SizedBox.shrink()` — zero reserved space, zero layout impact — whenever
+/// the user is premium OR no ad has finished loading yet; only a
+/// successfully loaded [BannerAd] renders a sized box around an [AdWidget].
+/// Callers place this as a plain sibling in a `Column` ABOVE the existing
+/// body (`app.dart`'s `_PaginaPrincipalState.build`) — this widget itself
+/// never wraps its parent in a `Stack`/overlay.
+class BannerAnuncioSuperior extends StatefulWidget {
+  const BannerAnuncioSuperior({super.key});
+
+  @override
+  State<BannerAnuncioSuperior> createState() => _BannerAnuncioSuperiorState();
+}
+
+class _BannerAnuncioSuperiorState extends State<BannerAnuncioSuperior> {
+  BannerAd? _bannerAd;
+  bool _cargado = false;
+
+  @override
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+    final servicio = context.read<ServicioAnuncios>();
+    if (_bannerAd == null && servicio.debeMostrarBanner) {
+      _cargarBanner();
+    }
+  }
+
+  void _cargarBanner() {
+    // Fire-and-forget: a failure (no plugin channel in `flutter test`, no
+    // fill, offline) leaves `_bannerAd` `null` forever, which keeps this
+    // widget collapsed — exactly the same degrade-to-shrink path a genuine
+    // load failure takes in production. Never throws out of this method.
+    final anuncio = BannerAd(
+      size: AdSize.banner,
+      adUnitId: bannerAdUnitIdPrueba,
+      request: const AdRequest(),
+      listener: BannerAdListener(
+        onAdLoaded: (ad) {
+          if (!mounted) {
+            ad.dispose();
+            return;
+          }
+          setState(() {
+            _bannerAd = ad as BannerAd;
+            _cargado = true;
+          });
+        },
+        onAdFailedToLoad: (ad, error) {
+          ad.dispose();
+        },
+      ),
+    );
+    anuncio.load().catchError((_) {});
+  }
+
+  @override
+  void dispose() {
+    _bannerAd?.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final entitlement = context.watch<EstadoEntitlement>();
+    if (entitlement.esPremium) return const SizedBox.shrink();
+    // Instant vanish-on-purchase (ad-display spec "Ads Vanish Immediately
+    // On Purchase"): even a banner that finished loading BEFORE this
+    // transition is dropped, never shown to a now-premium user.
+    if (!_cargado || _bannerAd == null) return const SizedBox.shrink();
+    final ad = _bannerAd!;
+    return SizedBox(
+      width: ad.size.width.toDouble(),
+      height: ad.size.height.toDouble(),
+      child: AdWidget(ad: ad),
+    );
+  }
+}