import 'package:flutter/material.dart';
import 'tripz_colors.dart';
import 'typography.dart';

/// بناء الثيم — المدخلان الوحيدان: السطوع واللغة.
/// docs/26 §2, §4
ThemeData buildTheme({required Brightness brightness, required Locale locale}) {
  final bool isDark = brightness == Brightness.dark;
  final seed = const Color(0xFF0E7C66); // أخضر تركوازي — بذرة المستأجر

  final colorScheme = ColorScheme.fromSeed(
    seedColor: seed,
    brightness: brightness,
  );

  final textTheme = buildTextTheme(locale);

  return ThemeData(
    useMaterial3: true,
    brightness: brightness,
    colorScheme: colorScheme,
    textTheme: textTheme,
    extensions: [
      isDark ? TripzColors.dark : TripzColors.light,
    ],
    appBarTheme: AppBarTheme(
      backgroundColor: colorScheme.surface,
      foregroundColor: colorScheme.onSurface,
      elevation: 0,
      scrolledUnderElevation: 0,
      centerTitle: false,
      titleTextStyle: textTheme.titleLarge?.copyWith(
        color: colorScheme.onSurface,
      ),
    ),
    inputDecorationTheme: InputDecorationTheme(
      filled: true,
      fillColor: colorScheme.surfaceContainerHighest,
      border: OutlineInputBorder(
        borderRadius: BorderRadius.circular(8),
        borderSide: BorderSide(color: colorScheme.outline),
      ),
      enabledBorder: OutlineInputBorder(
        borderRadius: BorderRadius.circular(8),
        borderSide: BorderSide(color: colorScheme.outline),
      ),
      focusedBorder: OutlineInputBorder(
        borderRadius: BorderRadius.circular(8),
        borderSide: BorderSide(color: colorScheme.primary, width: 2),
      ),
      errorBorder: OutlineInputBorder(
        borderRadius: BorderRadius.circular(8),
        borderSide: BorderSide(color: colorScheme.error),
      ),
      contentPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 14),
      labelStyle: textTheme.bodyLarge,
      hintStyle: textTheme.bodyLarge?.copyWith(color: colorScheme.onSurfaceVariant),
    ),
    filledButtonTheme: FilledButtonThemeData(
      style: FilledButton.styleFrom(
        minimumSize: const Size.fromHeight(52),
        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
        textStyle: textTheme.labelLarge,
      ),
    ),
    outlinedButtonTheme: OutlinedButtonThemeData(
      style: OutlinedButton.styleFrom(
        minimumSize: const Size.fromHeight(52),
        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
        textStyle: textTheme.labelLarge,
      ),
    ),
    cardTheme: CardThemeData(
      elevation: 0,
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.circular(12),
        side: BorderSide(color: colorScheme.outlineVariant),
      ),
      margin: EdgeInsets.zero,
    ),
    bottomSheetTheme: const BottomSheetThemeData(
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.vertical(top: Radius.circular(24)),
      ),
      showDragHandle: true,
    ),
  );
}