import 'package:flutter/material.dart';
import 'package:scence_map/controllers/controller.dart';

class PilePointTable extends StatefulWidget {
  final List<PilePoint> pilePoints;
  final Function(List<PilePoint>) onUpdate;

  PilePointTable({required this.pilePoints, required this.onUpdate});

  @override
  _PilePointTableState createState() => _PilePointTableState();
}

class _PilePointTableState extends State<PilePointTable> {
  List<bool> _selected = [];

  @override
  void initState() {
    super.initState();
    _selected = List<bool>.filled(widget.pilePoints.length, false);
  }

  void _deleteSelected() {
    setState(() {
      widget.pilePoints
          .removeWhere((point) => _selected[widget.pilePoints.indexOf(point)]);
      _selected = List<bool>.filled(widget.pilePoints.length, false);
      widget.onUpdate(widget.pilePoints);
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('桩点列表'),
        actions: [
          IconButton(
            icon: Icon(Icons.delete),
            onPressed: _deleteSelected,
          ),
        ],
      ),
      body: SingleChildScrollView(
        scrollDirection: Axis.vertical,
        child: Table(
          border: const TableBorder(
            verticalInside: BorderSide(color: Colors.grey, width: 1.0),
            horizontalInside: BorderSide(color: Colors.grey, width: 1.0),
          ),
          columnWidths: const {
            0: IntrinsicColumnWidth(),
            1: IntrinsicColumnWidth(),
            2: IntrinsicColumnWidth(),
            3: IntrinsicColumnWidth(),
          },
          children: [
            const TableRow(
              children: [
                Center(child: Text('选择')),
                Center(child: Text('ID')),
                Center(child: Text('X')),
                Center(child: Text('Y')),
              ],
            ),
            ...List<TableRow>.generate(
              widget.pilePoints.length,
              (index) => TableRow(
                children: [
                  TableCell(
                    verticalAlignment: TableCellVerticalAlignment.middle,
                    child: Padding(
                      padding: EdgeInsets.symmetric(horizontal: 12.0),
                      child: Checkbox(
                        value: _selected[index],
                        onChanged: (bool? value) {
                          setState(() {
                            _selected[index] = value ?? false;
                          });
                        },
                      ),
                    ),
                  ),
                  TableCell(
                    verticalAlignment: TableCellVerticalAlignment.middle,
                    child: Padding(
                      padding: EdgeInsets.symmetric(horizontal: 12.0),
                      child: Text(widget.pilePoints[index].id.toString()),
                    ),
                  ),
                  TableCell(
                    verticalAlignment: TableCellVerticalAlignment.middle,
                    child: Padding(
                      padding: EdgeInsets.symmetric(horizontal: 12.0),
                      child: GestureDetector(
                        onTap: () => _editPilePoint(context, index, 'x'),
                        child:
                            Text(widget.pilePoints[index].x.toString()),
                      ),
                    ),
                  ),
                  TableCell(
                    verticalAlignment: TableCellVerticalAlignment.middle,
                    child: Padding(
                      padding: EdgeInsets.symmetric(horizontal: 12.0),
                      child: GestureDetector(
                        onTap: () => _editPilePoint(context, index, 'y'),
                        child:
                            Text(widget.pilePoints[index].y.toString()),
                      ),
                    ),
                  ),
                ],
              ),
            ),
          ],
        ),
      ),
    );
  }

  void _editPilePoint(BuildContext context, int index, String field) {
    TextEditingController controller = TextEditingController(
      text: field == 'x'
          ? widget.pilePoints[index].x.toString()
          : widget.pilePoints[index].y.toString(),
    );

    showDialog(
      context: context,
      builder: (context) {
        return AlertDialog(
          title: Text('编辑桩点'),
          content: TextField(
            controller: controller,
            keyboardType: TextInputType.number,
            decoration: InputDecoration(labelText: field == 'x' ? 'X' : 'Y'),
          ),
          actions: [
            TextButton(
              onPressed: () {
                setState(() {
                  if (field == 'x') {
                    widget.pilePoints[index].x = double.parse(controller.text);
                  } else {
                    widget.pilePoints[index].y = double.parse(controller.text);
                  }
                  widget.onUpdate(widget.pilePoints);
                });
                Navigator.of(context).pop();
              },
              child: Text('保存'),
            ),
            TextButton(
              onPressed: () {
                Navigator.of(context).pop();
              },
              child: Text('取消'),
            ),
          ],
        );
      },
    );
  }
}