import 'package:flutter/material.dart';

/// Thème noir & blanc épuré, avec une seule couleur d'accent.
/// Vert émeraude pour évoquer les points / gains (et se distinguer de l'app
/// sœur « Gestion Prix » qui utilise le bleu, sur la même tablette).
/// Change [accent] pour ajuster la touche de couleur de toute l'app.
class AppTheme {
  static const Color accent = Color(0xFF12805C); // vert émeraude
  static const Color noir = Color(0xFF111114);
  static const Color grisTexte = Color(0xFF6B6B72);

  static ThemeData clair() {
    final scheme = ColorScheme.fromSeed(
      seedColor: accent,
      brightness: Brightness.light,
    ).copyWith(
      primary: noir,
      onPrimary: Colors.white,
      secondary: accent,
      surface: Colors.white,
      onSurface: noir,
    );

    return _base(scheme, const Color(0xFFF6F6F7));
  }

  static ThemeData sombre() {
    final scheme = ColorScheme.fromSeed(
      seedColor: accent,
      brightness: Brightness.dark,
    ).copyWith(
      primary: Colors.white,
      onPrimary: noir,
      secondary: accent,
    );

    return _base(scheme, const Color(0xFF0E0E11));
  }

  static ThemeData _base(ColorScheme scheme, Color fond) {
    final base = ThemeData(
      useMaterial3: true,
      colorScheme: scheme,
      scaffoldBackgroundColor: fond,
      fontFamily: 'Roboto',
    );

    return base.copyWith(
      appBarTheme: AppBarTheme(
        backgroundColor: fond,
        foregroundColor: scheme.onSurface,
        elevation: 0,
        centerTitle: false,
        titleTextStyle: TextStyle(
          color: scheme.onSurface,
          fontSize: 24,
          fontWeight: FontWeight.w700,
          letterSpacing: -0.5,
        ),
      ),
      cardTheme: CardThemeData(
        elevation: 0,
        color: scheme.surface,
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(16),
          side: BorderSide(color: scheme.outlineVariant.withValues(alpha: 0.5)),
        ),
        margin: EdgeInsets.zero,
      ),
      filledButtonTheme: FilledButtonThemeData(
        style: FilledButton.styleFrom(
          backgroundColor: scheme.primary,
          foregroundColor: scheme.onPrimary,
          minimumSize: const Size.fromHeight(52),
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(14),
          ),
          textStyle: const TextStyle(fontSize: 16, fontWeight: FontWeight.w600),
        ),
      ),
      inputDecorationTheme: InputDecorationTheme(
        filled: true,
        fillColor: scheme.surface,
        border: OutlineInputBorder(
          borderRadius: BorderRadius.circular(14),
          borderSide: BorderSide(color: scheme.outlineVariant),
        ),
        enabledBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(14),
          borderSide: BorderSide(color: scheme.outlineVariant),
        ),
        focusedBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(14),
          borderSide: const BorderSide(color: accent, width: 2),
        ),
      ),
      navigationBarTheme: NavigationBarThemeData(
        backgroundColor: scheme.surface,
        indicatorColor: accent.withValues(alpha: 0.14),
        elevation: 0,
        labelTextStyle: WidgetStateProperty.resolveWith((states) {
          final selected = states.contains(WidgetState.selected);
          return TextStyle(
            fontSize: 12,
            fontWeight: selected ? FontWeight.w700 : FontWeight.w500,
            color: selected ? scheme.onSurface : grisTexte,
          );
        }),
        iconTheme: WidgetStateProperty.resolveWith((states) {
          final selected = states.contains(WidgetState.selected);
          return IconThemeData(
            color: selected ? accent : grisTexte,
          );
        }),
      ),
    );
  }
}