FreeTLab
0416b301b2
- New ServicioExportImport owns the v2 backup envelope, pretty JSON encode and graceful decode; byte-compatible with existing exports, locked by a round-trip test - pantalla_ajustes delegates backup serialization to the service (inline jsonDecode/jsonEncode removed) - New EstadoEcualizador ChangeNotifier owns all EQ state and persistence (principal/current/per-station presets, active flag), exposed via its own provider so EQ changes no longer rebuild EstadoRadio consumers - EstadoRadio slims down ~210 lines and keeps 15 delegating compat members marked TODO(S4b) for the next slice to remove - Player EQ toggle rewired to the new provider to avoid going stale - 4 new tests (103 total green), flutter analyze clean
81 lines
3.2 KiB
Dart
81 lines
3.2 KiB
Dart
import 'dart:convert';
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import '../modelos/emisora.dart';
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import '../modelos/grupo_favoritos.dart';
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import '../modelos/preset_ecualizador.dart';
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/// Owns the backup (export/import) JSON serialization (S4-R4).
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///
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/// The v2 envelope produced here is byte-compatible with the legacy format
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/// previously assembled inline by `EstadoRadio.exportarConfig` and
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/// pretty-printed by `pantalla_ajustes.dart`, so existing exports keep
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/// round-tripping. State APPLICATION (writing favorites, EQ, alarms back
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/// into the app) stays in `EstadoRadio.importarConfig` — this service only
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/// owns serialization, parsing and the envelope shape.
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class ServicioExportImport {
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const ServicioExportImport();
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/// Current backup schema version (v2 — full portability).
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static const int versionActual = 2;
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/// Builds the v2 export envelope. Key set and semantics must stay exactly
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/// as the legacy inline export so old backups remain importable:
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/// the `alarmas` block is the RAW JSON map persisted by ServicioAlarmas
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/// and passes through untouched (no re-parsing here).
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Map<String, dynamic> construirExportacion({
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required List<GrupoFavoritos> gruposFavoritos,
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required List<Emisora> favoritos,
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required List<Emisora> emisorasCustom,
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required PresetEcualizador presetPrincipal,
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required Map<String, PresetEcualizador> presetsPorEmisora,
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required Map<String, dynamic>? alarmas,
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required String? emisoraPreferidaUuid,
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required String ordenListas,
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required List<int> timerSuenoPresetsSegundos,
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DateTime? exportadoEn,
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}) {
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return {
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'version': versionActual,
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'exportedAt': (exportadoEn ?? DateTime.now()).toIso8601String(),
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// Favorites + groups (preserves grupo_id assignments per station).
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// The protected "sin asignar" group is implicit and never exported.
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'gruposFavoritos':
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gruposFavoritos
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.where((g) => !g.esSinAsignar)
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.map((g) => g.toMap())
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.toList(),
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'favoritos': favoritos.map((e) => e.toMap()).toList(),
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// Custom stations.
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'emisorasCustom': emisorasCustom.map((e) => e.toMap()).toList(),
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// Equalizer.
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'presetPrincipalEcualizador': presetPrincipal.toJson(),
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'presetsEcualizador': presetsPorEmisora.map(
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(uuid, preset) => MapEntry(uuid, preset.toJson()),
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),
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// Full alarm block (alarms + vacations + exceptions) — raw passthrough.
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'alarmas': alarmas,
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// User preferences.
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'emisoraPreferidaUuid': emisoraPreferidaUuid,
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'ordenListas': ordenListas,
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'timerSuenoPresetsSegundos': timerSuenoPresetsSegundos,
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};
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}
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/// Serializes an export envelope to pretty-printed JSON (same formatting
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/// the legacy export shared as a file).
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String exportar(Map<String, dynamic> config) =>
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const JsonEncoder.withIndent(' ').convert(config);
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/// Parses a backup JSON string. Returns `null` on malformed input or when
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/// the document is not a JSON object — graceful, never throws (S4-R4).
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Map<String, dynamic>? importar(String raw) {
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try {
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final decoded = jsonDecode(raw);
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if (decoded is! Map) return null;
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return Map<String, dynamic>.from(decoded);
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} on FormatException {
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return null;
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}
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}
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}
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