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 +1,117 @@
+import 'dart:async';
+
+import 'package:flutter/foundation.dart' show debugPrint;
+import 'package:google_mobile_ads/google_mobile_ads.dart';
+
+/// TODO(ads): official Google TEST ad unit ids — AdMob has not provisioned
+/// real ones yet (design.md Open Questions). Swap these for the real banner
+/// / interstitial unit ids once available; never ship the test ids to
+/// production.
+const bannerAdUnitIdPrueba = 'ca-app-pub-3940256099942544/6300978111';
+const interstitialAdUnitIdPrueba = 'ca-app-pub-3940256099942544/1033173712';
+
+/// Ads port + AdMob adapter (Design "Interfaces / Contracts", ADR-6): owns
+/// the entitlement gate for both surfaces, the interstitial's session
+/// frequency cap, and is the ONLY `google_mobile_ads` call site besides
+/// `banner_anuncio_superior.dart`'s `BannerAd` widget wrapper. The frequency
+/// cap and premium gating are pure/injectable (`ahora`,
+/// `mostrarInterstitialImpl`) so they are unit-testable with a fake clock
+/// and zero AdMob platform channels (Design Testing Strategy).
+class ServicioAnuncios {
+  ServicioAnuncios({
+    bool Function()? esPremium,
+    DateTime Function()? ahora,
+    Future<bool> Function()? mostrarInterstitialImpl,
+  }) : _esPremium = esPremium ?? (() => false),
+       _ahora = ahora ?? DateTime.now,
+       _mostrarInterstitialImpl =
+           mostrarInterstitialImpl ?? _mostrarInterstitialAdMob;
+
+  /// Session-scoped cap (ad-display spec "Interstitial Frequency Cap"): at
+  /// most 2 interstitials per process lifetime.
+  static const maxInterstitialsPorSesion = 2;
+
+  /// Minimum spacing between two interstitials (ad-display spec, same
+  /// requirement).
+  static const separacionMinima = Duration(minutes: 3);
+
+  final bool Function() _esPremium;
+  final DateTime Function() _ahora;
+  final Future<bool> Function() _mostrarInterstitialImpl;
+
+  int _mostrados = 0;
+  DateTime? _ultimoMostrado;
+
+  /// Ad-display spec "Persistent Top Banner": absent entirely for premium.
+  bool get debeMostrarBanner => !_esPremium();
+
+  bool _dentroDelCap() {
+    if (_esPremium()) return false;
+    if (_mostrados >= maxInterstitialsPorSesion) return false;
+    final ultimo = _ultimoMostrado;
+    if (ultimo != null && _ahora().difference(ultimo) < separacionMinima) {
+      return false;
+    }
+    return true;
+  }
+
+  /// Attempts to show an interstitial for one of the two allowed CTAs (add
+  /// station manually, add alarm). Callers are responsible for the ADR-6
+  /// ordering invariant themselves (cap-check-before-interstitial for
+  /// add-alarm, so a refusal is never preceded by an ad) — this method only
+  /// owns entitlement + frequency-cap gating, never the caller's own
+  /// business-rule ordering.
+  ///
+  /// Returns whether an interstitial actually rendered. A failed/aborted ad
+  /// load (network, no fill) does NOT consume the session cap — only a
+  /// genuinely SHOWN ad does (Spec intent: the cap limits driver-facing
+  /// interruptions, not load attempts).
+  Future<bool> intentarInterstitial() async {
+    if (!_dentroDelCap()) return false;
+    final mostrado = await _mostrarInterstitialImpl();
+    if (mostrado) {
+      _mostrados++;
+      _ultimoMostrado = _ahora();
+    }
+    return mostrado;
+  }
+
+  static Future<bool> _mostrarInterstitialAdMob() async {
+    try {
+      final cargaCompleter = Completer<InterstitialAd?>();
+      await InterstitialAd.load(
+        adUnitId: interstitialAdUnitIdPrueba,
+        request: const AdRequest(),
+        adLoadCallback: InterstitialAdLoadCallback(
+          onAdLoaded: (ad) {
+            if (!cargaCompleter.isCompleted) cargaCompleter.complete(ad);
+          },
+          onAdFailedToLoad: (error) {
+            debugPrint('[PluriWave][anuncios] interstitial load ERROR $error');
+            if (!cargaCompleter.isCompleted) cargaCompleter.complete(null);
+          },
+        ),
+      );
+      final cargado = await cargaCompleter.future;
+      if (cargado == null) return false;
+
+      final cierreCompleter = Completer<void>();
+      cargado.fullScreenContentCallback = FullScreenContentCallback(
+        onAdDismissedFullScreenContent: (ad) {
+          ad.dispose();
+          if (!cierreCompleter.isCompleted) cierreCompleter.complete();
+        },
+        onAdFailedToShowFullScreenContent: (ad, error) {
+          ad.dispose();
+          if (!cierreCompleter.isCompleted) cierreCompleter.complete();
+        },
+      );
+      await cargado.show();
+      await cierreCompleter.future;
+      return true;
+    } catch (e) {
+      debugPrint('[PluriWave][anuncios] interstitial ERROR $e');
+      return false;
+    }
+  }
+}