feat: Implement startup retry mechanism for custom stations and equalizer persistence

- Added state management for startup retry and custom station handling in `EstadoRadio`. - Created tasks for implementing strict TDD with RED tests for HTTP failure retries and EQ persistence. - Developed verification report to ensure compliance with TDD practices. - Introduced fake services for testing, including `FakeServicioAudio`, `FakeServicioFavoritos`, and `FakeServicioRadio`. - Implemented widget tests for `PantallaInicio` and `PantallaFavoritos` to validate UI behavior with custom stations. - Enhanced `ServicioRadio` to support host rotation and retry logic for API calls. - Established a new configuration file to enforce project constraints and testing rules.
2026-04-27 17:34:04 +02:00
parent 922b3b4859
commit d579a0e107
21 changed files with 1902 additions and 156 deletions
--- a/lib/servicios/servicio_ecualizador.dart
+++ b/lib/servicios/servicio_ecualizador.dart
@@ -0,0 +1,104 @@
+import 'dart:convert';
+
+import 'package:shared_preferences/shared_preferences.dart';
+
+import '../modelos/preset_ecualizador.dart';
+
+class ConfiguracionEcualizador {
+  const ConfiguracionEcualizador({
+    required this.principal,
+    required this.porEmisora,
+  });
+
+  final PresetEcualizador principal;
+  final Map<String, PresetEcualizador> porEmisora;
+}
+
+class ServicioEcualizador {
+  static const _keyPresetPrincipal = 'eq_preset_principal_v1';
+  static const _keyPresetsPorEmisora = 'eq_presets_por_emisora_v1';
+
+  Future<ConfiguracionEcualizador> cargar() async {
+    final prefs = await SharedPreferences.getInstance();
+    final principal = _leerPresetPrincipal(prefs);
+    final porEmisora = _leerPresetsPorEmisora(prefs);
+    return ConfiguracionEcualizador(
+      principal: principal,
+      porEmisora: porEmisora,
+    );
+  }
+
+  Future<void> guardarPrincipal(PresetEcualizador preset) async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setString(_keyPresetPrincipal, jsonEncode(preset.toJson()));
+  }
+
+  Future<void> guardarPorEmisora(String uuid, PresetEcualizador preset) async {
+    final prefs = await SharedPreferences.getInstance();
+    final mapa = _leerPresetsPorEmisora(prefs);
+    mapa[uuid] = preset;
+    await _guardarPresetsPorEmisora(prefs, mapa);
+  }
+
+  Future<void> eliminarPorEmisora(String uuid) async {
+    final prefs = await SharedPreferences.getInstance();
+    final mapa = _leerPresetsPorEmisora(prefs);
+    mapa.remove(uuid);
+    await _guardarPresetsPorEmisora(prefs, mapa);
+  }
+
+  Future<void> guardarConfiguracion(ConfiguracionEcualizador config) async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setString(
+      _keyPresetPrincipal,
+      jsonEncode(config.principal.toJson()),
+    );
+    await _guardarPresetsPorEmisora(prefs, config.porEmisora);
+  }
+
+  PresetEcualizador _leerPresetPrincipal(SharedPreferences prefs) {
+    final raw = prefs.getString(_keyPresetPrincipal);
+    if (raw == null || raw.isEmpty) {
+      return PresetEcualizador.flat;
+    }
+    try {
+      return PresetEcualizador.desdeJson(
+        Map<String, dynamic>.from(jsonDecode(raw) as Map),
+      );
+    } catch (_) {
+      return PresetEcualizador.flat;
+    }
+  }
+
+  Map<String, PresetEcualizador> _leerPresetsPorEmisora(
+    SharedPreferences prefs,
+  ) {
+    final raw = prefs.getString(_keyPresetsPorEmisora);
+    if (raw == null || raw.isEmpty) {
+      return {};
+    }
+    try {
+      final data = Map<String, dynamic>.from(jsonDecode(raw) as Map);
+      return data.map(
+        (uuid, preset) => MapEntry(
+          uuid,
+          PresetEcualizador.desdeJson(
+            Map<String, dynamic>.from(preset as Map),
+          ),
+        ),
+      );
+    } catch (_) {
+      return {};
+    }
+  }
+
+  Future<void> _guardarPresetsPorEmisora(
+    SharedPreferences prefs,
+    Map<String, PresetEcualizador> mapa,
+  ) async {
+    final serializado = mapa.map(
+      (uuid, preset) => MapEntry(uuid, preset.toJson()),
+    );
+    await prefs.setString(_keyPresetsPorEmisora, jsonEncode(serializado));
+  }
+}