// Copyright (C) 2025, uvok cheetah
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

import 'package:uvok_epaper_badge/model/device/device.dart';
import 'package:flutter/material.dart';
import 'package:uvok_epaper_badge/widgets/notifying_list_widget.dart';

class DeviceScanSelection extends NotifyingListWidget<Device> {
  const DeviceScanSelection({
    super.key,
    required super.items,
    required super.onItemSelected,
  });

  @override
  State<DeviceScanSelection> createState() => _DeviceScanSelectionState();
}

class _DeviceScanSelectionState extends State<DeviceScanSelection> {
  int selectedResult = -1;

  @override
  Widget build(BuildContext context) {
    return Expanded(
      child: ListView.separated(
        itemCount: widget.items.length,
        itemBuilder: (context, index) {
          if (index >= widget.items.length) return null;
          final Device result = widget.items[index];
          final String name = result.name ?? "???";

          return ListTile(
            title: Text(name),
            subtitle: Text(result.address ?? "???"),
            trailing: Text('RSSI: ${result.rssi}'),
            selectedTileColor: Colors.amber,
            selectedColor: Colors.black,
            onTap: () {
              setState(() {
                selectedResult = index;
              });
              widget.onItemSelected(result);
            },
            selected: selectedResult == index,
          );
        },
        separatorBuilder: (BuildContext context, int index) {
          return Divider();
        },
      ),
    );
  }

  @override
  void didUpdateWidget(covariant DeviceScanSelection oldWidget) {
    super.didUpdateWidget(oldWidget);

    if (!_deviceListEqual(oldWidget.items, widget.items)) {
      setState(() {
        selectedResult = -1;
      });
    }
  }

  bool _deviceListEqual(List<Device> oldList, List<Device> newList) {
    if (oldList.length != newList.length) return false;
    for (int i = 0; i < oldList.length; i++) {
      if (oldList[i].address != newList[i].address) {
        return false;
      }
    }
    return true;
  }
}