TKK_E32210691/lib/home_view.dart

import 'package:flutter/material.dart';
import 'package:firebase_database/firebase_database.dart';
import 'package:flutter/services.dart';
import 'package:url_launcher/url_launcher.dart';
import 'snr_rssi_delay_view.dart';
import 'package:intl/intl.dart'; // Tambahkan import ini untuk memparsing tanggal

class HomeView extends StatelessWidget {
  final DatabaseReference _databaseReference =
      FirebaseDatabase.instance.ref('location');

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        elevation: 0,
        title: Text('Posisi Pendaki'),
      ),
      body: Padding(
        padding: EdgeInsets.all(16),
        child: StreamBuilder<DatabaseEvent>(
          stream: _databaseReference.onValue,
          builder: (context, snapshot) {
            if (snapshot.connectionState == ConnectionState.waiting) {
              return Center(child: CircularProgressIndicator());
            }
            if (snapshot.hasError) {
              return Center(child: Text("Error: ${snapshot.error}"));
            }
            if (snapshot.hasData && snapshot.data!.snapshot.value != null) {
              Map<String, dynamic> data = Map<String, dynamic>.from(
                  snapshot.data!.snapshot.value as Map);

              List<DataRow> rows = data.entries.map((entry) {
                var key = entry.key;
                var value = Map<String, dynamic>.from(entry.value as Map);
                String time = value['time'];
                String latitude = value['latitude'];
                String longitude = value['longitude'];
                String snr = value['snr'].toString();
                String rssi = value['rssi'].toString();
                String delay = value['delay'].toString();
                String mapUrl =
                    'https://www.google.com/maps/search/?api=1&query=$latitude,$longitude';

                return DataRow(cells: [
                  DataCell(
                    Text(time),
                    onTap: () {
                      Clipboard.setData(ClipboardData(text: time));
                      ScaffoldMessenger.of(context).showSnackBar(SnackBar(
                        content: Text('Waktu disalin ke clipboard'),
                      ));
                    },
                  ),
                  DataCell(
                    Text('$latitude, $longitude'),
                    onTap: () {
                      Clipboard.setData(
                          ClipboardData(text: '$latitude, $longitude'));
                      ScaffoldMessenger.of(context).showSnackBar(SnackBar(
                        content:
                            Text('Latitude dan Longitude disalin ke clipboard'),
                      ));
                    },
                  ),
                  DataCell(
                    InkWell(
                      child: Text(
                        'Lihat Peta',
                        style: TextStyle(
                          color: Colors.green[700],
                          decoration: TextDecoration.underline,
                        ),
                      ),
                      onTap: () async {
                        Uri url = Uri.parse(mapUrl);
                        if (await canLaunchUrl(url)) {
                          await launchUrl(url);
                        } else {
                          ScaffoldMessenger.of(context).showSnackBar(SnackBar(
                            content: Text('Tidak dapat membuka peta'),
                          ));
                        }
                      },
                    ),
                  ),
                  DataCell(
                    InkWell(
                      child: Text(
                        'Detail',
                        style: TextStyle(
                          color: Colors.green[700],
                          decoration: TextDecoration.underline,
                        ),
                      ),
                      onTap: () {
                        Navigator.push(
                          context,
                          MaterialPageRoute(
                            builder: (context) => SnrRssiDelayView(
                              time: time,
                              snr: snr,
                              rssi: rssi,
                              delay: delay,
                            ),
                          ),
                        );
                      },
                    ),
                  ),
                ]);
              }).toList();

              // Urutkan baris berdasarkan nilai waktu dalam urutan dari lama ke baru
              rows.sort((a, b) {
                String timeA = (a.cells[0].child as Text).data!;
                String timeB = (b.cells[0].child as Text).data!;
                DateFormat format =
                    DateFormat("dd-MM-yyyy HH:mm:ss"); // Sesuaikan format
                DateTime dateTimeA = format.parse(timeA);
                DateTime dateTimeB = format.parse(timeB);
                return dateTimeA
                    .compareTo(dateTimeB); // Urutan dari lama ke baru
              });

              // Balik urutan baris sehingga yang terbaru di atas
              rows = rows.reversed.toList();

              return LayoutBuilder(
                builder: (context, constraints) {
                  double columnWidth = (constraints.maxWidth - 32) / 4;
                  return SingleChildScrollView(
                    scrollDirection: Axis.horizontal,
                    child: SingleChildScrollView(
                      child: DataTable(
                        columnSpacing: columnWidth * 0.1,
                        columns: [
                          DataColumn(
                              label: Container(
                                  width: columnWidth, child: Text('Waktu'))),
                          DataColumn(
                              label: Container(
                                  width: columnWidth, child: Text('Lokasi'))),
                          DataColumn(
                              label: Container(
                                  width: columnWidth, child: Text('Peta'))),
                          DataColumn(
                              label: Container(
                                  width: columnWidth, child: Text('Detail'))),
                        ],
                        rows: rows,
                      ),
                    ),
                  );
                },
              );
            }
            return Center(child: Text("Tidak ada data yang tersedia"));
          },
        ),
      ),
    );
  }
}