import 'package:flutter/material.dart';

enum AppThemePreset {
  ember,
  graphite,
  moss;

  static const AppThemePreset fallback = AppThemePreset.ember;

  String get storageValue => switch (this) {
    AppThemePreset.ember => 'ember',
    AppThemePreset.graphite => 'graphite',
    AppThemePreset.moss => 'moss',
  };

  String get title => switch (this) {
    AppThemePreset.ember => 'Ember',
    AppThemePreset.graphite => 'Graphite',
    AppThemePreset.moss => 'Moss',
  };

  String get subtitle => switch (this) {
    AppThemePreset.ember => 'Тёплая тёмная тема по умолчанию',
    AppThemePreset.graphite => 'Холодная тёмная тема для пульта',
    AppThemePreset.moss => 'Тёмная зелёная тема для спокойного режима',
  };

  Color get accentColor => switch (this) {
    AppThemePreset.ember => const Color(0xFFFF6B2C),
    AppThemePreset.graphite => const Color(0xFF5BC0BE),
    AppThemePreset.moss => const Color(0xFF8AA05A),
  };

  ThemeData get themeData => switch (this) {
    AppThemePreset.ember => _buildDarkTheme(
      seedColor: const Color(0xFFFF6B2C),
      scaffoldBackgroundColor: const Color(0xFF0E0E0E),
      surfaceColor: const Color(0xFF1C1A18),
      appBarColor: const Color(0xFF191715),
    ),
    AppThemePreset.graphite => _buildDarkTheme(
      seedColor: const Color(0xFF5BC0BE),
      scaffoldBackgroundColor: const Color(0xFF0C1217),
      surfaceColor: const Color(0xFF151D24),
      appBarColor: const Color(0xFF121920),
    ),
    AppThemePreset.moss => _buildDarkTheme(
      seedColor: const Color(0xFF8AA05A),
      scaffoldBackgroundColor: const Color(0xFF10140F),
      surfaceColor: const Color(0xFF1A2118),
      appBarColor: const Color(0xFF161C15),
    ),
  };

  static AppThemePreset fromStorageValue(String? value) {
    for (final preset in AppThemePreset.values) {
      if (preset.storageValue == value) {
        return preset;
      }
    }
    return fallback;
  }
}

ThemeData _buildDarkTheme({
  required Color seedColor,
  required Color scaffoldBackgroundColor,
  required Color surfaceColor,
  required Color appBarColor,
}) {
  final scheme = ColorScheme.fromSeed(
    seedColor: seedColor,
    brightness: Brightness.dark,
  );
  return ThemeData(
    useMaterial3: true,
    colorScheme: scheme,
    scaffoldBackgroundColor: scaffoldBackgroundColor,
    appBarTheme: AppBarTheme(
      backgroundColor: appBarColor,
      foregroundColor: Colors.white,
      elevation: 0,
      centerTitle: true,
    ),
    cardTheme: CardThemeData(
      color: surfaceColor,
      elevation: 1.5,
      margin: EdgeInsets.zero,
      shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(18)),
    ),
    listTileTheme: const ListTileThemeData(iconColor: Colors.white70),
    inputDecorationTheme: InputDecorationTheme(
      filled: true,
      fillColor: surfaceColor,
      border: OutlineInputBorder(borderRadius: BorderRadius.circular(14)),
      enabledBorder: OutlineInputBorder(
        borderRadius: BorderRadius.circular(14),
        borderSide: BorderSide(color: Colors.white.withValues(alpha: 0.08)),
      ),
      focusedBorder: OutlineInputBorder(
        borderRadius: BorderRadius.circular(14),
        borderSide: BorderSide(color: scheme.primary, width: 1.4),
      ),
    ),
    sliderTheme: const SliderThemeData(
      trackHeight: 4,
      thumbShape: RoundSliderThumbShape(enabledThumbRadius: 8),
    ),
  );
}