libre_gps_parser/lib/settings.dart

import 'package:permission_handler/permission_handler.dart';
import 'package:path_provider/path_provider.dart';
import 'package:file_picker/file_picker.dart';
import 'package:flutter/material.dart';
import 'global_helper_functions.dart';
import 'database_helper.dart';
import 'dart:io';

class Settings extends StatefulWidget {
  @override
  _SettingsState createState() => _SettingsState();
}

class _SettingsState extends State<Settings> {
  // String absoluteDBExportFileName = '';
  String _dbExportFileNameString = '';
  String elevationServer = "none";
  String openWeatherMapKey = "none??";
  String shortOWMAK = "none";
  final _dbExportFileNameController = TextEditingController();
  final _elevationServerController = TextEditingController();
  final _oWMKController = TextEditingController();
  bool _useElevation = false;
  bool _useWeather = false;
  double textHeight = 1.5;

  @override
  void initState() {
    super.initState();
    updateState();
  }

  @override
  Widget build(BuildContext context) {
    Future<void> _showDBImportDialog() async {
      Map<PermissionGroup, PermissionStatus> _storagePermissions;
      PermissionStatus _storagePermission = await PermissionHandler()
          .checkPermissionStatus(PermissionGroup.storage);
      if (_storagePermission == PermissionStatus.denied) {
        _storagePermissions = await PermissionHandler()
            .requestPermissions([PermissionGroup.storage]);
      }
      if ((_storagePermission == PermissionStatus.granted) ||
          (_storagePermissions.toString() ==
              PermissionStatus.granted.toString())) {
        showDialog(
            context: context,
            builder: (BuildContext context) {
              return AlertDialog(
                backgroundColor: ivory,
                shape: RoundedRectangleBorder(
                  borderRadius: BorderRadius.all(Radius.circular(6.0)),
                ),
                title: Text(
                  'You can import a\njson backup of\nyour database',
                  textAlign: TextAlign.center,
                  style: TextStyle(
                    color: candyApple,
                  ),
                ),
                content: Column(
                  mainAxisSize: MainAxisSize.min,
                  children: <Widget>[
                    Container(
                      margin: EdgeInsets.only(
                        top: 40,
                        bottom: 10,
                      ),
                      child: ButtonTheme(
                        height: 55,
                        padding: EdgeInsets.only(
                            top: 5, right: 12, bottom: 12, left: 10),
                        child: RaisedButton(
                            shape: RoundedRectangleBorder(
                              borderRadius:
                                  BorderRadius.all(Radius.circular(6.0)),
                            ),
                            color: peacockBlue,
                            child: Text(
                              'Select File',
                              style: TextStyle(
                                height: textHeight,
                                color: Colors.white,
                                fontSize: 24,
                              ),
                            ),
                            onPressed: () async {
                              String _filePath;
                              _filePath = await FilePicker.getFilePath(
                                  type: FileType.ANY);
                              Navigator.of(context).pop();
                              try {
                                String _importString =
                                    await File(_filePath).readAsString();
                                bool _imported =
                                    await importDataBase(_importString);
                                if (_imported) {
                                  showDialog(
                                      context: context,
                                      builder: (BuildContext context) {
                                        return AlertDialog(
                                          backgroundColor: ivory,
                                          shape: RoundedRectangleBorder(
                                            borderRadius: BorderRadius.all(
                                                Radius.circular(6.0)),
                                          ),
                                          title: Text(
                                            'Importing From\n\'$_filePath\'\n Succeeded!',
                                            textAlign: TextAlign.center,
                                            style: TextStyle(
                                              color: candyApple,
                                            ),
                                          ),
                                          content: Column(
                                            mainAxisSize: MainAxisSize.min,
                                            children: <Widget>[
                                              Container(
                                                margin: EdgeInsets.only(
                                                  top: 40,
                                                  bottom: 10,
                                                ),
                                                child: ButtonTheme(
                                                  height: 55,
                                                  padding: EdgeInsets.only(
                                                      top: 5,
                                                      right: 12,
                                                      bottom: 12,
                                                      left: 10),
                                                  child: RaisedButton(
                                                      shape:
                                                          RoundedRectangleBorder(
                                                        borderRadius:
                                                            BorderRadius.all(
                                                                Radius.circular(
                                                                    6.0)),
                                                      ),
                                                      color: peacockBlue,
                                                      child: Text(
                                                        'OK',
                                                        style: TextStyle(
                                                          height: textHeight,
                                                          color: Colors.white,
                                                          fontSize: 24,
                                                        ),
                                                      ),
                                                      onPressed: () async {
                                                        Navigator.of(context)
                                                            .pop();
                                                      }),
                                                ),
                                              ),
                                            ],
                                          ),
                                        );
                                      });
                                }
                              } catch (e) {
                                print(e);
                                showDialog(
                                    context: context,
                                    builder: (BuildContext context) {
                                      return AlertDialog(
                                        backgroundColor: ivory,
                                        shape: RoundedRectangleBorder(
                                          borderRadius: BorderRadius.all(
                                              Radius.circular(6.0)),
                                        ),
                                        title: Text(
                                          'Oops, something went wrong',
                                          textAlign: TextAlign.center,
                                          style: TextStyle(
                                            color: candyApple,
                                          ),
                                        ),
                                        content: Column(
                                          mainAxisSize: MainAxisSize.min,
                                          children: <Widget>[
                                            Container(
                                              margin: EdgeInsets.only(
                                                top: 40,
                                                bottom: 10,
                                              ),
                                              child: ButtonTheme(
                                                height: 55,
                                                padding: EdgeInsets.only(
                                                    top: 5,
                                                    right: 12,
                                                    bottom: 12,
                                                    left: 10),
                                                child: RaisedButton(
                                                    shape:
                                                        RoundedRectangleBorder(
                                                      borderRadius:
                                                          BorderRadius.all(
                                                              Radius.circular(
                                                                  6.0)),
                                                    ),
                                                    color: peacockBlue,
                                                    child: Text(
                                                      'OK',
                                                      style: TextStyle(
                                                        height: textHeight,
                                                        color: Colors.white,
                                                        fontSize: 24,
                                                      ),
                                                    ),
                                                    onPressed: () async {
                                                      Navigator.of(context)
                                                          .pop();
                                                    }),
                                              ),
                                            ),
                                          ],
                                        ),
                                      );
                                    });
                              }
                            }),
                      ),
                    ),
                  ],
                ),
              );
            });
      }
    }

    Future<void> _showDBExportDialog() async {
      Map<PermissionGroup, PermissionStatus> _storagePermissions;
      PermissionStatus _storagePermission = await PermissionHandler()
          .checkPermissionStatus(PermissionGroup.storage);
      if (_storagePermission == PermissionStatus.denied) {
        _storagePermissions = await PermissionHandler()
            .requestPermissions([PermissionGroup.storage]);
      }
      if ((_storagePermission == PermissionStatus.granted) ||
          (_storagePermissions.toString() ==
              PermissionStatus.granted.toString())) {
        Directory sdcard = await getExternalStorageDirectory();
        showDialog(
            context: context,
            builder: (BuildContext context) {
              return AlertDialog(
                backgroundColor: ivory,
                shape: RoundedRectangleBorder(
                  borderRadius: BorderRadius.all(Radius.circular(6.0)),
                ),
                title: Text(
                  'Export File Name?',
                  textAlign: TextAlign.center,
                  style: TextStyle(
                    color: candyApple,
                  ),
                ),
                content: Column(
                  mainAxisSize: MainAxisSize.min,
                  children: <Widget>[
                    Text(
                      'DataBase will be\nexported to json file.',
                      style: TextStyle(
                        fontSize: 16,
                      ),
                    ),
                    TextField(
                      controller: _dbExportFileNameController,
                      keyboardType: TextInputType.multiline,
                      maxLines: null,
                      decoration: InputDecoration(
                        hintText: this._dbExportFileNameString,
                      ),
                      onChanged: (text) {
                        this._dbExportFileNameString =
                            (text.length > 0) ? text : "libre_gps_parser.json";
                      },
                    ),
                    Container(
                      margin: EdgeInsets.only(
                        top: 40,
                        bottom: 10,
                      ),
                      child: ButtonTheme(
                        height: 55,
                        padding: EdgeInsets.only(
                            top: 5, right: 12, bottom: 12, left: 10),
                        child: RaisedButton(
                            shape: RoundedRectangleBorder(
                              borderRadius:
                                  BorderRadius.all(Radius.circular(6.0)),
                            ),
                            color: peacockBlue,
                            child: Text(
                              'Export',
                              style: TextStyle(
                                height: textHeight,
                                color: Colors.white,
                                fontSize: 24,
                              ),
                            ),
                            onPressed: () async {
                              _updatedbExportFileName();
                              final dbHelper = DatabaseHelper.instance;
                              String _dbExportString =
                                  await dbHelper.queryDBExport();
                              String _absoluteDBExportFileName =
                                  '${sdcard.path}/${this._dbExportFileNameString}';
                              File _file = File(_absoluteDBExportFileName);
                              File _result =
                                  await _file.writeAsString(_dbExportString);
                              Navigator.of(context).pop();
                              if (_result == null) {
                                showDialog(
                                    context: context,
                                    builder: (BuildContext context) {
                                      return AlertDialog(
                                        backgroundColor: ivory,
                                        shape: RoundedRectangleBorder(
                                          borderRadius: BorderRadius.all(
                                              Radius.circular(6.0)),
                                        ),
                                        title: Text(
                                          'Writing To\n\'$_absoluteDBExportFileName\'\n(sdcard) Failed!',
                                          textAlign: TextAlign.center,
                                          style: TextStyle(
                                            color: candyApple,
                                          ),
                                        ),
                                        content: Column(
                                          mainAxisSize: MainAxisSize.min,
                                          children: <Widget>[
                                            Container(
                                              margin: EdgeInsets.only(
                                                top: 40,
                                                bottom: 10,
                                              ),
                                              child: ButtonTheme(
                                                height: 55,
                                                padding: EdgeInsets.only(
                                                    top: 5,
                                                    right: 12,
                                                    bottom: 12,
                                                    left: 10),
                                                child: RaisedButton(
                                                    shape:
                                                        RoundedRectangleBorder(
                                                      borderRadius:
                                                          BorderRadius.all(
                                                              Radius.circular(
                                                                  6.0)),
                                                    ),
                                                    color: peacockBlue,
                                                    child: Text(
                                                      'OK',
                                                      style: TextStyle(
                                                        height: textHeight,
                                                        color: Colors.white,
                                                        fontSize: 24,
                                                      ),
                                                    ),
                                                    onPressed: () async {
                                                      Navigator.of(context)
                                                          .pop();
                                                    }),
                                              ),
                                            ),
                                          ],
                                        ),
                                      );
                                    });
                              } else {
                                showDialog(
                                    context: context,
                                    builder: (BuildContext context) {
                                      return AlertDialog(
                                        backgroundColor: ivory,
                                        shape: RoundedRectangleBorder(
                                          borderRadius: BorderRadius.all(
                                              Radius.circular(6.0)),
                                        ),
                                        title: Text(
                                          'Writing To\n\'$_absoluteDBExportFileName\'\n(sdcard) Succeeded!',
                                          textAlign: TextAlign.center,
                                          style: TextStyle(
                                            color: candyApple,
                                          ),
                                        ),
                                        content: Column(
                                          mainAxisSize: MainAxisSize.min,
                                          children: <Widget>[
                                            Container(
                                              margin: EdgeInsets.only(
                                                top: 40,
                                                bottom: 10,
                                              ),
                                              child: ButtonTheme(
                                                height: 55,
                                                padding: EdgeInsets.only(
                                                    top: 5,
                                                    right: 12,
                                                    bottom: 12,
                                                    left: 10),
                                                child: RaisedButton(
                                                    shape:
                                                        RoundedRectangleBorder(
                                                      borderRadius:
                                                          BorderRadius.all(
                                                              Radius.circular(
                                                                  6.0)),
                                                    ),
                                                    color: peacockBlue,
                                                    child: Text(
                                                      'OK',
                                                      style: TextStyle(
                                                        height: textHeight,
                                                        color: Colors.white,
                                                        fontSize: 24,
                                                      ),
                                                    ),
                                                    onPressed: () async {
                                                      Navigator.of(context)
                                                          .pop();
                                                    }),
                                              ),
                                            ),
                                          ],
                                        ),
                                      );
                                    });
                              }
                            }),
                      ),
                    ),
                  ],
                ),
              );
            });
      }
    }

    return WillPopScope(
      onWillPop: _popBack,
      child: Scaffold(
        backgroundColor: peacockBlue,
        appBar: AppBar(
          title: const Text('Settings'),
        ),
        body: ListView(
          children: <Widget>[
            Container(
              padding: myBoxPadding,
              decoration: myBoxDecoration(ivory),
              child: Row(
                children: [
                  Expanded(
                    child: Text(
                      'Enable Elevation Api Server?',
                      style: TextStyle(
                        height: textHeight,
                        fontSize: 20,
                      ),
                    ),
                  ),
                  Container(
                    padding: EdgeInsets.all(15.0),
                    child: Transform.scale(
                      scale: 2,
                      child: Switch(
                        value: this._useElevation,
                        onChanged: (value) {
                          setPreferenceUseElevation(value)
                              .then((bool committed) {
                            setState(() {
                              this._useElevation = value;
                            });
                          });
                        },
                        activeTrackColor: peacockBlue,
                        activeColor: navy,
                        inactiveThumbColor: candyApple,
                      ),
                    ),
                  ),
                ],
              ),
            ),
            ((this._useElevation)
                ? Container(
                    padding: myBoxPadding,
                    decoration: myBoxDecoration(ivory),
                    child: Column(
                      children: [
                        Text(
                          'Open-Elevation Api Server to Use',
                        ),
                        Text(
                          'Current Value: ${this.elevationServer}',
                        ),
                        TextField(
                          controller: _elevationServerController,
                          decoration: InputDecoration(
                            hintText: this.elevationServer,
                          ),
                        ),
                        Container(
                          margin: EdgeInsets.only(
                            top: 20.0,
                            bottom: 5.0,
                          ),
                          child: RaisedButton.icon(
                            label: Text(
                              "Update Elevation Server",
                            ),
                            icon: Icon(
                              Icons.refresh,
                              size: 50.0,
                            ),
                            color: candyApple,
                            onPressed: () {
                              _updateElevationServer();
                            },
                          ),
                        ),
                      ],
                    ),
                  )
                : Container()),
            Container(
              padding: myBoxPadding,
              decoration: myBoxDecoration(ivory),
              child: Row(
                children: [
                  Expanded(
                    child: Text(
                      'Use OpenWeatherMap Weather?',
                      style: TextStyle(
                        height: textHeight,
                        fontSize: 20,
                      ),
                    ),
                  ),
                  Container(
                    padding: EdgeInsets.all(15.0),
                    child: Transform.scale(
                      scale: 2,
                      child: Switch(
                        value: this._useWeather,
                        onChanged: (value) {
                          setPreferenceUseWeather(value).then((bool committed) {
                            setState(() {
                              this._useWeather = value;
                            });
                          });
                        },
                        activeTrackColor: peacockBlue,
                        activeColor: navy,
                        inactiveThumbColor: candyApple,
                      ),
                    ),
                  ),
                ],
              ),
            ),
            ((this._useWeather)
                ? Container(
                    padding: myBoxPadding,
                    decoration: myBoxDecoration(ivory),
                    child: Column(
                      children: [
                        Text(
                          'Open Weather Map Api Key to Use',
                        ),
                        Text(
                          'Current Value: ${this.shortOWMAK}...',
                        ),
                        TextField(
                          controller: _oWMKController,
                          decoration: InputDecoration(
                            hintText: '${this.shortOWMAK}...',
                          ),
                        ),
                        Container(
                          margin: EdgeInsets.only(
                            top: 20.0,
                            bottom: 5.0,
                          ),
                          child: RaisedButton.icon(
                            label: Text(
                              "Update ... Api Key",
                            ),
                            icon: Icon(
                              Icons.refresh,
                              size: 50.0,
                            ),
                            color: candyApple,
                            onPressed: () {
                              _updateOpenWeatherMapApiKey();
                            },
                          ),
                        ),
                      ],
                    ),
                  )
                : Container()),
            Container(
              padding: myBoxPadding,
              decoration: myBoxDecoration(ivory),
              child: Row(
                children: [
                  Expanded(
                    flex: 2,
                    child: IconButton(
                      alignment: Alignment.center,
                      icon: Icon(
                        Icons.arrow_back,
                        color: candyApple,
                      ),
                      iconSize: 60.0,
                      onPressed: () {
                        _showDBExportDialog();
                      },
                    ),
                  ),
                  Expanded(
                    flex: 6,
                    child: Text(
                      'Export DataBase',
                      textAlign: TextAlign.center,
                      style: TextStyle(
                        height: textHeight,
                        fontSize: 20,
                      ),
                    ),
                  ),
                  Expanded(
                    flex: 2,
                    child: IconButton(
                      alignment: Alignment.center,
                      icon: Icon(
                        Icons.arrow_forward,
                        color: candyApple,
                      ),
                      iconSize: 60.0,
                      onPressed: () {
                        _showDBExportDialog();
                      },
                    ),
                  ),
                ],
              ),
            ),
            Container(
              padding: myBoxPadding,
              decoration: myBoxDecoration(ivory),
              child: Row(
                children: [
                  Expanded(
                    flex: 2,
                    child: IconButton(
                      alignment: Alignment.center,
                      icon: Icon(
                        Icons.arrow_forward,
                        color: candyApple,
                      ),
                      iconSize: 60.0,
                      onPressed: () {
                        _showDBImportDialog();
                      },
                    ),
                  ),
                  Expanded(
                    flex: 6,
                    child: Text(
                      'Import DataBase',
                      textAlign: TextAlign.center,
                      style: TextStyle(
                        height: textHeight,
                        fontSize: 20,
                      ),
                    ),
                  ),
                  Expanded(
                    flex: 2,
                    child: IconButton(
                      alignment: Alignment.center,
                      icon: Icon(
                        Icons.arrow_back,
                        color: candyApple,
                      ),
                      iconSize: 60.0,
                      onPressed: () {
                        _showDBImportDialog();
                      },
                    ),
                  ),
                ],
              ),
            ),
          ],
        ),
      ),
    );
  }

  Future<void> updateState() async {
    String _evServer = await getPreferenceElevationServer();
    String _oWMK = await getPreferenceOpenWeatherMapApiKey();
    String _dbEFNS = await getPreferenceDBExportFileName();
    bool _useElev = await getPreferenceUseElevation();
    bool _useWTHR = await getPreferenceUseWeather();
    setState(() {
      this.elevationServer = _evServer;
      this.openWeatherMapKey = _oWMK;
      this._useElevation = _useElev;
      this._useWeather = _useWTHR;
      this.shortOWMAK = _oWMK.substring(0, 5);
      this._dbExportFileNameString = _dbEFNS;
    });
  }

  void _updatedbExportFileName() {
    String _dbEFNS = this._dbExportFileNameString;
    setPreferenceDBExportFileName(_dbEFNS).then((bool committed) {
      setState(() {
        this._dbExportFileNameString = _dbEFNS;
      });
    });
  }

  void _updateOpenWeatherMapApiKey() {
    String _oWMK = _oWMKController.text;
    if (_oWMK.length > 5) {
      setPreferenceOpenWeatherMapApiKey(_oWMK).then((bool committed) {
        if (_oWMK != this.openWeatherMapKey) {
          setState(() {
            this.openWeatherMapKey = _oWMK;
            this.shortOWMAK = _oWMK.substring(0, 5);
          });
        }
      });
      Navigator.pop(context, 2);
    }
  }

  void _updateElevationServer() {
    String _elevServer = _elevationServerController.text;
    RegExp _urlValidator = RegExp(r'^http[s]?://.+$');
    if (_urlValidator.hasMatch(_elevServer)) {
      setPreferenceElevationServer(_elevServer).then((bool committed) {
        if (_elevServer != this.elevationServer) {
          setState(() {
            this.elevationServer = _elevServer;
          });
        }
      });
      Navigator.pop(context, 1);
    }
  }

  Future<bool> _popBack() {
    Navigator.pop(context, 3);
    return Future.value(false);
  }
}