import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

import 'app_colors.dart';

/// Thème visuel de l'application Laverie.
class AppTheme {
  AppTheme._();

  static ThemeData get light {
    const colorScheme = ColorScheme.light(
      primary: AppColors.primary,
      onPrimary: Colors.white,
      primaryContainer: Color(0xFFDBEAFE),
      onPrimaryContainer: AppColors.primaryDark,
      secondary: AppColors.secondary,
      onSecondary: Colors.white,
      error: AppColors.error,
      onError: Colors.white,
      surface: AppColors.surface,
      onSurface: AppColors.textPrimary,
      onSurfaceVariant: AppColors.textSecondary,
    );

    return ThemeData(
      useMaterial3: true,
      colorScheme: colorScheme,
      scaffoldBackgroundColor: AppColors.background,
      appBarTheme: const AppBarTheme(
        centerTitle: false,
        elevation: 0,
        scrolledUnderElevation: 0,
        backgroundColor: AppColors.surface,
        foregroundColor: AppColors.textPrimary,
        surfaceTintColor: Colors.transparent,
        systemOverlayStyle: SystemUiOverlayStyle.dark,
        titleTextStyle: TextStyle(
          color: AppColors.textPrimary,
          fontSize: 18,
          fontWeight: FontWeight.w600,
        ),
      ),
      cardTheme: CardThemeData(
        elevation: 1,
        shadowColor: Colors.black.withValues(alpha: 0.06),
        color: AppColors.surface,
        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(14)),
        margin: EdgeInsets.zero,
      ),
      dividerTheme: const DividerThemeData(color: AppColors.divider, thickness: 1),
      inputDecorationTheme: InputDecorationTheme(
        filled: true,
        fillColor: AppColors.surface,
        contentPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 14),
        border: OutlineInputBorder(
          borderRadius: BorderRadius.circular(12),
          borderSide: BorderSide.none,
        ),
        enabledBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(12),
          borderSide: const BorderSide(color: AppColors.divider),
        ),
        focusedBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(12),
          borderSide: const BorderSide(color: AppColors.primary, width: 1.5),
        ),
        prefixIconColor: AppColors.textSecondary,
      ),
      elevatedButtonTheme: ElevatedButtonThemeData(
        style: ElevatedButton.styleFrom(
          minimumSize: const Size.fromHeight(48),
          elevation: 0,
          backgroundColor: AppColors.primary,
          foregroundColor: Colors.white,
          shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
          textStyle: const TextStyle(fontWeight: FontWeight.w600, fontSize: 16),
        ),
      ),
      outlinedButtonTheme: OutlinedButtonThemeData(
        style: OutlinedButton.styleFrom(
          minimumSize: const Size.fromHeight(48),
          foregroundColor: AppColors.primary,
          side: const BorderSide(color: AppColors.divider),
          shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
        ),
      ),
      floatingActionButtonTheme: const FloatingActionButtonThemeData(
        elevation: 3,
        backgroundColor: AppColors.primary,
        foregroundColor: Colors.white,
      ),
      navigationBarTheme: NavigationBarThemeData(
        elevation: 0,
        height: 64,
        backgroundColor: AppColors.surface,
        indicatorColor: AppColors.primary.withValues(alpha: 0.12),
        surfaceTintColor: Colors.transparent,
        labelTextStyle: WidgetStateProperty.resolveWith((states) {
          if (states.contains(WidgetState.selected)) {
            return const TextStyle(fontSize: 12, fontWeight: FontWeight.w600, color: AppColors.primary);
          }
          return const TextStyle(fontSize: 12, color: AppColors.textSecondary);
        }),
        iconTheme: WidgetStateProperty.resolveWith((states) {
          if (states.contains(WidgetState.selected)) {
            return const IconThemeData(color: AppColors.primary, size: 24);
          }
          return const IconThemeData(color: AppColors.textSecondary, size: 24);
        }),
      ),
      listTileTheme: const ListTileThemeData(
        contentPadding: EdgeInsets.symmetric(horizontal: 16, vertical: 4),
      ),
      textTheme: const TextTheme(
        headlineMedium: TextStyle(fontSize: 22, fontWeight: FontWeight.w600, color: AppColors.textPrimary),
        titleMedium: TextStyle(fontSize: 16, fontWeight: FontWeight.w600, color: AppColors.textPrimary),
        bodyLarge: TextStyle(fontSize: 16, color: AppColors.textPrimary),
        bodyMedium: TextStyle(fontSize: 14, color: AppColors.textSecondary),
      ),
    );
  }
}