import 'dart:convert';
import 'dart:io';

import 'package:csv/csv.dart';
import 'package:file_picker/file_picker.dart';
import 'package:flutter/material.dart';
import 'package:flutter/material.dart' as material;
import 'package:fmassive/database.dart';
import 'package:fmassive/delete_all_sets.dart';
import 'package:fmassive/main.dart';
import 'package:fmassive/sound_picker.dart';
import 'package:moor/moor.dart';

class SettingsPage extends StatelessWidget {
  const SettingsPage({super.key, required this.search});

  final String search;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: _SettingsPage(search: search),
      ),
    );
  }
}

class _SettingsPage extends StatefulWidget {
  const _SettingsPage({required this.search});

  final String search;

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

class _SettingsPageState extends State<_SettingsPage> {
  late Stream<Setting> stream;

  @override
  void initState() {
    super.initState();
    stream = (db.select(db.settings)..limit(1)).watchSingle();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: StreamBuilder<Setting>(
        stream: stream,
        builder: (context, snapshot) {
          final settings = snapshot.data;
          print('build: $settings');

          if (settings == null)
            return const Center(child: CircularProgressIndicator());

          final filteredItems = [
            {'title': 'Alarm', 'value': settings.alarm},
            {'title': 'Vibrate', 'value': settings.vibrate},
            {'title': 'Notify', 'value': settings.notify},
            {'title': 'Images', 'value': settings.images},
            {'title': 'Show Unit', 'value': settings.showUnit},
            {'title': 'Steps', 'value': settings.steps},
            {'title': 'Sound', 'value': settings.sound},
            {'title': 'Import sets', 'value': null},
            {'title': 'Delete all sets', 'value': null},
          ]
              .where((item) => (item['title'] as String)
                  .toLowerCase()
                  .contains(widget.search.toLowerCase()))
              .toList();

          return material.Column(
            children: [
              Expanded(
                child: ListView.builder(
                  itemCount: filteredItems.length,
                  itemBuilder: (context, index) {
                    final item = filteredItems[index];

                    if (item['title'] == 'Delete all sets')
                      return DeleteAllSets(mounted: mounted);

                    if (item['title'] == 'Import sets')
                      return Center(
                          child: ElevatedButton(
                        child: const Text("Import sets"),
                        onPressed: () async {
                          final result = await FilePicker.platform.pickFiles(
                              type: FileType.custom,
                              allowedExtensions: ['csv']);
                          if (result == null) return;

                          final file = File(result.files.single.path!);
                          final input = file.openRead();
                          final fields = await input
                              .transform(utf8.decoder)
                              .transform(const CsvToListConverter(eol: "\n"))
                              .skip(1)
                              .toList();
                          final gymSets = fields.map((row) => GymSetsCompanion(
                                id: Value(int.tryParse(row[0]) ?? 0),
                                name: Value(row[1]),
                                reps: Value(int.tryParse(row[2]) ?? 0),
                                weight: Value(double.tryParse(row[3]) ?? 0),
                                created: Value(row[4]),
                                unit: Value(row[5]),
                                hidden: Value(row[6] == 'true'),
                                image: Value(row[7]),
                                sets: Value(int.tryParse(row[8]) ?? 0),
                                minutes: Value(int.tryParse(row[9]) ?? 0),
                                seconds: Value(int.tryParse(row[10]) ?? 0),
                                steps: Value(row[11]),
                              ));
                          await db.batch(
                              (batch) => batch.insertAll(db.gymSets, gymSets));
                          if (!mounted) return;
                          ScaffoldMessenger.of(context).showSnackBar(
                              const SnackBar(content: Text('Imported sets')));
                        },
                      ));

                    if (item['title'] == 'Sound') {
                      return Center(
                        child: SoundPicker(
                          path: settings.sound,
                          onSelect: (path) {
                            db
                                .update(db.settings)
                                .write(SettingsCompanion(sound: Value(path)));
                          },
                        ),
                      );
                    }

                    return SwitchListTile(
                      title: Text(item['title'].toString()),
                      value: (item['value'] ?? false) as bool,
                      onChanged: (value) {
                        switch (item['title']) {
                          case 'Alarm':
                            db
                                .update(db.settings)
                                .write(SettingsCompanion(alarm: Value(value)));
                            break;
                          case 'Vibrate':
                            db.update(db.settings).write(
                                SettingsCompanion(vibrate: Value(value)));
                            break;
                          case 'Notify':
                            db
                                .update(db.settings)
                                .write(SettingsCompanion(notify: Value(value)));
                            break;
                          case 'Images':
                            db
                                .update(db.settings)
                                .write(SettingsCompanion(images: Value(value)));
                            break;
                          case 'Show Unit':
                            db.update(db.settings).write(
                                SettingsCompanion(showUnit: Value(value)));
                            break;
                          case 'Steps':
                            db
                                .update(db.settings)
                                .write(SettingsCompanion(steps: Value(value)));
                            break;
                        }
                      },
                    );
                  },
                ),
              ),
            ],
          );
        },
      ),
    );
  }
}