import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import '../providers/locale_provider.dart';

/// One-tap language switch driving ARB + dynamic strings together (Group-2).
/// Drop into profile / settings / app bar:
///   const LanguageSwitcher()
class LanguageSwitcher extends StatelessWidget {
  final bool compact;
  const LanguageSwitcher({super.key, this.compact = false});

  static const _labels = {'en': 'English', 'hi': 'हिन्दी'};

  @override
  Widget build(BuildContext context) {
    final provider = Provider.of<LocaleProvider>(context);
    if (compact) {
      return DropdownButtonHideUnderline(
        child: DropdownButton<String>(
          value: provider.code,
          items: LocaleProvider.supportedCodes
              .map((c) => DropdownMenuItem(value: c, child: Text(_labels[c] ?? c)))
              .toList(),
          onChanged: (c) {
            if (c != null) provider.setLocale(c);
          },
        ),
      );
    }
    return SegmentedButton<String>(
      segments: LocaleProvider.supportedCodes
          .map((c) => ButtonSegment(value: c, label: Text(_labels[c] ?? c)))
          .toList(),
      selected: {provider.code},
      onSelectionChanged: (s) => provider.setLocale(s.first),
    );
  }
}