CityCards_Customer_Flutter/lib/common_packages/language_selection_bottomsheet.dart

import 'package:citycards_customer/common_bloc/language_selection_bloc.dart';
import 'package:citycards_customer/common_packages/custom_filled_button.dart';
import 'package:citycards_customer/common_packages/custom_text.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';

import '../l10n/app_localizations.dart';
import '../localPreference/local_preference.dart';

class LanguageSelectionBottomsheet extends StatefulWidget {
  const LanguageSelectionBottomsheet({super.key});

  @override
  State<LanguageSelectionBottomsheet> createState() =>
      _LanguageSelectionBottomsheetState();
}

class _LanguageSelectionBottomsheetState
    extends State<LanguageSelectionBottomsheet> {
  /// Each entry: display label → BCP-47 code for google_mlkit_translation
  final List<Map<String, String>> languages = [
    {'label': 'English / English', 'code': 'en'},
    {'label': 'Dutch / Nederlands', 'code': 'nl'},
    {'label': 'Spanish / Español', 'code': 'es'},
    {'label': 'French / Français', 'code': 'fr'},
    {'label': 'Japanese / 日本語', 'code': 'ja'},
  ];

  List<Map<String, String>> _filtered = [];
  String? _pendingLabel; // highlighted in list but not yet saved
  final TextEditingController _searchController = TextEditingController();

  @override
  void initState() {
    super.initState();
    _filtered = List.from(languages);
    _searchController.addListener(_onSearch);
  }

  void _onSearch() {
    final query = _searchController.text.toLowerCase();
    setState(() {
      _filtered = languages
          .where((l) => l['label']!.toLowerCase().contains(query))
          .toList();
    });
  }

  Future<void> _onSave() async {
    if (_pendingLabel == null) {
      Navigator.of(context).pop();
      return;
    }

    final selected = languages.firstWhere((l) => l['label'] == _pendingLabel);
    final code = selected['code']!;

    // Persist to SQLite
    await LocalPreference.setLanguage(code);

    // Update BLoC
    if (mounted) {
      context.read<LanguageBloc>().add(UpdateLanguage(label: _pendingLabel!, code: code));
      Navigator.of(context).pop();
    }
  }

  @override
  void dispose() {
    _searchController.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: EdgeInsets.only(
        left: 20.w,
        right: 20.w,
        top: 16.h,
        bottom: MediaQuery.of(context).viewInsets.bottom + 16.h,
      ),
      child: BlocBuilder<LanguageBloc, LanguageState>(
        builder: (context, state) {
          // Seed pending selection from current BLoC state on first build
          _pendingLabel ??= state.label;

          return Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              /// Drag handle
              Container(
                width: 40.w,
                height: 4.h,
                decoration: BoxDecoration(
                  color: const Color(0xFF2D3134),
                  borderRadius: BorderRadius.circular(4.r),
                ),
              ),
              SizedBox(height: 20.h),

              /// Title
              Align(
                alignment: Alignment.topLeft,
                child: Text(
                  AppLocalizations.of(context)!.changeLanguageTitle,
                  style: TextStyle(
                    fontSize: 18.sp,
                    fontWeight: FontWeight.w500,
                  ),
                ),
              ),
              SizedBox(height: 22.h),

              /// Search field
              TextField(
                controller: _searchController,
                decoration: InputDecoration(
                  hintText: AppLocalizations.of(context)!.searchLanguages,
                  hintStyle: TextStyle(
                    fontSize: 14.sp,
                    color: const Color(0xBBC83B61).withOpacity(0.4),
                  ),
                  suffixIcon:
                  Image.asset("assets/icons/search.png", scale: 4),
                  contentPadding:
                  EdgeInsets.symmetric(horizontal: 24.w),
                  enabledBorder: OutlineInputBorder(
                    borderRadius: BorderRadius.circular(10.r),
                    borderSide: BorderSide(
                      color: const Color(0xBBC83B61).withOpacity(0.4),
                      width: .4.w,
                    ),
                  ),
                  focusedBorder: OutlineInputBorder(
                    borderRadius: BorderRadius.circular(10.r),
                    borderSide: BorderSide(
                      color: const Color(0xFFF95F62),
                      width: 1.w,
                    ),
                  ),
                ),
              ),
              SizedBox(height: 12.h),

              /// Language list (fixed height, scrollable)
              ConstrainedBox(
                constraints: BoxConstraints(maxHeight: 280.h),
                child: ListView.builder(
                  shrinkWrap: true,
                  itemCount: _filtered.length,
                  itemBuilder: (context, index) {
                    final item = _filtered[index];
                    final label = item['label']!;
                    final isSelected = _pendingLabel == label;

                    return ListTile(
                      dense: true,
                      onTap: () => setState(() => _pendingLabel = label),
                      leading: GestureDetector(
                        onTap: () => setState(() => _pendingLabel = label),
                        child: isSelected
                            ? Image.asset(
                          "assets/icons/radio_button_checked.png",
                          scale: 4,
                        )
                            : Image.asset(
                          "assets/icons/radio_button_unchecked.png",
                          scale: 4,
                        ),
                      ),
                      title: CustomText(
                        text: label,
                        size: 16.sp,
                        color: isSelected
                            ? const Color(0xFFF95F62)
                            : const Color(0xFF000000).withOpacity(.6),
                      ),
                    );
                  },
                ),
              ),

              SizedBox(height: 16.h),

              /// Save button
              CustomFilledButton(
                width: double.infinity,
                height: 48.h,
                onTap: _onSave,
                label: AppLocalizations.of(context)!.save,
              ),

              SizedBox(height: 8.h),
            ],
          );
        },
      ),
    );
  }
}