пример

// ignore_for_file: prefer_const_constructors
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:plantual_1/utils/utils.dart';
import 'package:firebase_core/firebase_core.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';
import 'package:insta_image_viewer/insta_image_viewer.dart';
import 'package:plantual_1/icons.dart';

Map<String, String> _mapPlantInfo =   {
  'name': 'Цимбидиум мечелистный',
  'sort': 'Цимбидиум',
  'subName': 'Cymbidium aloifolium',

  'imagePlant1': 'https://chto-posadit.ru/wp-content/uploads/TSimbidium-mechelistnyy-Cymbidium-ensifolium-foto.jpg',
  'imagePlant2': 'https://www.picturethisai.com/image-handle/website_cmsname/image/1080/157555734219849732.jpeg?x-oss-process=image/format,webp&v=1.0',
  'imagePlant3': 'https://passiflora.ru/images/_products/orchidgart/1128.jpg',
  'imagePlant4': 'https://passiflora.ru/images/_products/tenshinorchids/1304.jpg',

  'description': 'Цимбидиум мечелистный — это популярный вид орхидей с плотными, блестящими листьями, которые растут в форме меча. Цветы крупные, с приятным ароматом, появляются на длинных цветоносах. Окраска цветов варьируется от белого до кремово-желтого с красноватыми пятнами. Растение устойчиво и адаптируется к условиям средней освещенности и умеренной влажности.',

  'toxic': 'Нет',
  'type': 'Эпифитное растение',
  'lifespan': '15-20 лет',

  'plantHeigh': '30-50 см',
  'crownDiameter': '30-40 см',
  'leafsColor': 'Зеленый',
  'floweringTime': 'Весна, лето',
  'flowerDiameter': '5-8 см',
  'flowerColor': 'Белый, кремово-желтый с красноватыми пятнами',
  'harvestTime': '',
  'fruitColor': '',

  'genus': 'Cymbidium',
  'family': 'Орхидные',
  'order': 'Лилиецветные',
  'class': 'Однодольные',
  'phylum': 'Покрытосеменные',

  'temperature': '18-25°C',
  'sun': 'Яркий рассеянный свет',
  'dirt': 'Субстрат для орхидей',
  'locate': 'Светлое место с частичной тенью',

  'watering': '2-3 раза в неделю',
  'cut': 'По мере необходимости',
  'spreading': 'Делением куста',
  'repotting': '1 раз в 2-3 года',

  'date': '3',
};

void _main() async{
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp();
}

class cymbidiumEnsifolium extends StatefulWidget {
  cymbidiumEnsifolium({super.key});

  @override
  State<cymbidiumEnsifolium> createState() => _cymbidiumEnsifoliumState();
}

class _cymbidiumEnsifoliumState extends State<cymbidiumEnsifolium> {
  @override
  void initState(){
    super.initState();
  }
  final _auth = FirebaseAuth.instance;
  var buttonText = 'Добавить в мой сад';

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(),
      bottomNavigationBar: BottomAppBar(child: FloatingActionButton.extended(onPressed: ()async{
        final userRef = FirebaseFirestore.instance.collection(_auth.currentUser!.uid.toString());
        userRef.get().then((snapshot) {
          snapshot.docs.forEach((doc) {
            print(doc);
          });
        });

        DateTime now = DateTime.now();
        var date = int.parse(_mapPlantInfo['date']!);
        var dateN = new DateTime.now().add(Duration(days: date)).toString();
        var dateNext = DateTime.parse(dateN);
        var asd = DateTime.now().difference(dateNext);
        assert(date is int);
        String user = _auth.currentUser!.uid.toString();
        CollectionReference collectionReference = FirebaseFirestore.instance.collection(user);
        if((dateNext.hour + 5) > 24){
          collectionReference.doc(_mapPlantInfo['name']).set({
            'name': '${_mapPlantInfo['name']}',
            'image': '${_mapPlantInfo['imagePlant1']}',
            'dateDay': '${dateNext.day}',
            'dateMonth': '${dateNext.month}',
            'dateYear': '${dateNext.year}',
            'dateHour': '${24 - (dateNext.hour + 5)}',
            'dateMinute': '${dateNext.minute}',
            'step': '${_mapPlantInfo['date']}'
          });
        }else{
          collectionReference.doc(_mapPlantInfo['name']).set({
            'name': '${_mapPlantInfo['name']}',
            'image': '${_mapPlantInfo['imagePlant1']}',
            'dateDay': '${dateNext.day}',
            'dateMonth': '${dateNext.month}',
            'dateYear': '${dateNext.year}',
            'dateHour': '${dateNext.hour + 5}',
            'dateMinute': '${dateNext.minute}',
            'step': '${_mapPlantInfo['date']}'
          });
        }
        utilsDone().toastMessage('Растение добавлено');
      },
          label: Row(
            children: [
              Text(buttonText),
              Icon(Icons.add)
            ],
          )
      ),
      ),
      body: SingleChildScrollView(
        scrollDirection: Axis.vertical,
        child: Column(
          children: [
            _naming(),
            _plantImages(),
            _description(),
            _weedEtc(),
            _characteristics(),
            _scientificClassification(),
            _conditions(),
            _guide(),
          ],
        ),
      ),
    );
  }
}

class _naming extends StatelessWidget {
  _naming({super.key});

  @override
  Widget build(BuildContext context) {
    return Container(
      width: double.infinity,
      child: Column(
          children: [
            Row(
              children: [
                Padding(padding: EdgeInsets.only(left: 10)),
                Flexible(child: Text('${_mapPlantInfo['name']}, вид ${_mapPlantInfo['sort']}', softWrap: true, style: TextStyle(fontSize: 30))),
                Padding(padding: EdgeInsets.fromLTRB(0, 0, 10, 0)),
              ],
            ),
            Row(
              children: [
                Padding(padding: EdgeInsets.only(left: 10)),
                Flexible(child: Text('Ботаническое название: ${_mapPlantInfo['subName']}', softWrap: true, style: TextStyle(fontSize: 22, color: Colors.grey[800]))),
                Padding(padding: EdgeInsets.fromLTRB(0, 0, 10, 0)),
              ],
            )
          ]
      ),
    );
  }
}

class _plantImages extends StatelessWidget {
  _plantImages({super.key});

  @override
  Widget build(BuildContext context) {
    return Container(
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Container(
            width: double.infinity,
            height: 10,
            color: Colors.grey[200],
          ),
          Padding(padding: EdgeInsets.only(top: 10)),
          const Row(children: [
            Padding(padding: EdgeInsets.only(left: 10)),
            Icon(Icons.image_outlined),
            Padding(padding: EdgeInsets.only(right: 10)),
            Text('Изображения',style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold),),
          ],
          ),
          Padding(padding: EdgeInsets.only(bottom: 10)),
          Container(
            child: Row(
              mainAxisAlignment: MainAxisAlignment.spaceAround,
              children: [
                Column(
                  children: <Widget>[
                    _plantImage(imageUrl: '${_mapPlantInfo['imagePlant1']}',),
                    Padding(padding: EdgeInsets.only(top: 10)),
                    _plantImage(imageUrl: '${_mapPlantInfo['imagePlant2']}',),
                  ],
                ),
                Column(
                  children: <Widget>[
                    _plantImage(imageUrl: '${_mapPlantInfo['imagePlant3']}',),
                    Padding(padding: EdgeInsets.only(top: 10)),
                    _plantImage(imageUrl: '${_mapPlantInfo['imagePlant4']}',),
                  ],
                ),
              ],
            ),
          ),
          Padding(padding: EdgeInsets.only(bottom: 10))
        ],
      ),
    );
  }
}

class _plantImage extends StatelessWidget {
  final String imageUrl;

  const _plantImage({super.key, required this.imageUrl});

  @override
  Widget build(BuildContext context) {
    return InkWell(
      child: Container(
        child: Container(
          child: InstaImageViewer(
            child: Image(
              fit: BoxFit.fitWidth,
              image: NetworkImage(imageUrl),
            ),
          ),
          decoration: BoxDecoration(
              borderRadius: BorderRadius.circular(17),
              image: DecorationImage(image: NetworkImage(imageUrl))
          ),
        ),
        width: MediaQuery.of(context).size.width * 0.45,
        height: MediaQuery.of(context).size.width * 0.3,
        decoration: BoxDecoration(
            borderRadius: BorderRadius.circular(17),
            image: DecorationImage(image: NetworkImage(imageUrl))
        ),
      ),
    );
  }
}

class _description extends StatelessWidget {
  const _description({ super.key });

  @override
  Widget build(BuildContext context) {
    return Container(
        child: Column(
            children: [
              Container(
                width: double.infinity,
                height: 10,
                color: Colors.grey[200],
              ),
              Padding(padding: EdgeInsets.only(top: 10)),
              Row(
                  children: [
                    Padding(padding: EdgeInsets.only(left: 10)),
                    Icon(Icons.align_vertical_bottom_rounded),
                    Padding(padding: EdgeInsets.only(right: 10)),
                    Text('Описание', style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold))]
              ),
              Padding(padding: EdgeInsets.only(top: 10)),
              Row(
                children: [
                  Padding(padding: EdgeInsets.only(left: 10)),
                  Flexible(child: Text('${_mapPlantInfo['description']}', style: TextStyle(fontSize: 16), softWrap: true,)),
                  Padding(padding: EdgeInsets.only(right: 10)),
                ],
              ),
              Padding(padding: EdgeInsets.only(bottom: 10))
            ]
        )
    );
  }
}

class _weedEtc extends StatelessWidget {
  const _weedEtc({super.key});

  @override
  Widget build(BuildContext context) {
    return Container(
      child: Column(
        children: [
          Container(
            width: double.infinity,
            height: 10,
            color: Colors.grey[200],
          ),
          Padding(padding: EdgeInsets.only(top: 10)),
          Row(
              children: [
                Padding(padding: EdgeInsets.only(left: 10)),
                Icon(Icons.lightbulb),
                Padding(padding: EdgeInsets.only(right: 10)),
                Text('Ключевые факты', style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold))]
          ),
          Padding(padding: EdgeInsets.only(top: 10)),
          Padding(
            padding: EdgeInsets.symmetric(horizontal: 20),
            child: Column(
              children: [
                _linee(lineName: 'Токсичность', lineId: 'toxic', lineWidth: 100),
                _linee(lineName: 'Тип растения', lineId: 'type', lineWidth: 100),
                _linee(lineName: 'Продолжительность жизни', lineId: 'lifespan', lineWidth: 10),
              ],
            ),
          ),
          Padding(padding: EdgeInsets.only(bottom: 10))
        ],
      ),
    );
  }
}

class _linee extends StatelessWidget {
  final String lineName;
  final String lineId;
  final double lineWidth;
  const _linee({super.key, required this.lineName, required this.lineId, required this.lineWidth});

  @override
  Widget build(BuildContext context) {
    if(_mapPlantInfo['${lineId}'] == ''){
      return Container();
    }else{
      return Container(
        child: Column(
          children: [
            _otstup(),
            _line(lineId: lineId, lineWidth: lineWidth, lineName: lineName)
          ],
        ),
      );
    }}
}

class _line extends StatelessWidget {
  final String lineName;
  final String lineId;
  final double lineWidth;
  const _line({super.key, required this.lineName, required this.lineId, required this.lineWidth});

  @override
  Widget build(BuildContext context) {
    if(_mapPlantInfo['${lineId}'] == '') {
      return Container();
    }else{
      return Row(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: [
          Text('$lineName', style: TextStyle(fontSize: 16),),
          Padding(padding: EdgeInsets.only(right: lineWidth)),
          Container(child: Flexible(child: Text('${_mapPlantInfo[lineId]}', softWrap: true, style: TextStyle(fontWeight: FontWeight.bold, fontSize: 15)))),
        ],
      );
    }}
}

class _lineWithIcon extends StatelessWidget {
  final Color? lineIconColor;
  final IconData lineIcon;
  final String lineWithIconName;
  final String lineWithIconId;
  const _lineWithIcon({super.key, required this.lineIconColor, required this.lineIcon, required this.lineWithIconName, required this.lineWithIconId});

  @override
  Widget build(BuildContext context) {
    if(_mapPlantInfo['${lineWithIconId}'] == ''){
      return Container();
    }else{
      return Column(
        children: [
          _otstup(),
          _lineWithIco(lineIconColor: lineIconColor, lineIcon: lineIcon, lineWithIconName: lineWithIconName, lineWithIconId: lineWithIconId)
        ],
      );
    }}
}

class _lineWithIco extends StatelessWidget {
  final Color? lineIconColor;
  final IconData lineIcon;
  final String lineWithIconName;
  final String lineWithIconId;
  const _lineWithIco({super.key, required this.lineIconColor, required this.lineIcon, required this.lineWithIconName, required this.lineWithIconId});

  @override
  Widget build(BuildContext context) {
    if(_mapPlantInfo['${lineWithIconId}'] == ''){
      return Container();
    }else{
      return Row(
        mainAxisAlignment: MainAxisAlignment.start,
        children: [
          Icon(lineIcon, color: lineIconColor,),
          Padding(padding: EdgeInsets.only(right: 10)),
          Flexible(
              child: Column(
                mainAxisAlignment: MainAxisAlignment.center,
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Text(lineWithIconName, style: TextStyle(fontSize: 16, color: Colors.grey[850]),),
                  Text('${_mapPlantInfo[lineWithIconId]}', style: TextStyle(fontSize: 16, fontWeight: FontWeight.bold))
                ],
              )
          )
        ],
      );
    }}
}

class _characteristics extends StatelessWidget {
  const _characteristics({super.key});

  @override
  Widget build(BuildContext context) {
    return Container(
      child: Column(
        children: [
          Container(
            width: double.infinity,
            height: 10,
            color: Colors.grey[200],
          ),
          Padding(padding: EdgeInsets.only(top: 10)),
          Row(
              children: [
                Padding(padding: EdgeInsets.only(left: 10)),
                Icon(Icons.spa),
                Padding(padding: EdgeInsets.only(right: 10)),
                Text('Внешние характеристики', style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold))]
          ),
          Padding(padding: EdgeInsets.only(top: 10)),
          Padding(
            padding: EdgeInsets.symmetric(horizontal: 20),
            child: Column(
              children: [
                _linee(lineName: 'Высота растения', lineId: 'plantHeigh', lineWidth: 100),
                _linee(lineName: 'Диаметр короны', lineId: 'crownDiameter', lineWidth: 90),
                _linee(lineName: 'Цвет листьев', lineId: 'leafsColor', lineWidth: 100),
                _linee(lineName: 'Время цветенния', lineId: 'floweringTime', lineWidth: 10),
                _linee(lineName: 'Диаметр цветка', lineId: 'flowerDiameter', lineWidth: 95),
                _linee(lineName: 'Цвет цветка', lineId: 'flowerColor', lineWidth: 95),
                _linee(lineName: 'Время сбора урожая', lineId: 'harvestTime', lineWidth: 65),
                _linee(lineName: 'Цвет фрукта', lineId: 'fruitColor', lineWidth: 95),
                Padding(padding: EdgeInsets.only(top: 10)),
              ],
            ),
          ),
          Padding(padding: EdgeInsets.only(bottom: 10))
        ],
      ),
    );
  }
}

class _otstup extends StatelessWidget {
  const _otstup({super.key});

  @override
  Widget build(BuildContext context) {
    return Container(
      child: Column(
        children: [
          Padding(padding: EdgeInsets.only(bottom: 5)),
          Container(width: double.infinity, height: 0.5, color: Colors.grey),
          Padding(padding: EdgeInsets.only(top: 5)),
        ],
      ),
    );
  }
}

class _scientificClassification extends StatelessWidget {
  const _scientificClassification({super.key});

  @override
  Widget build(BuildContext context) {
    return Container(
      child: Column(
        children: [
          Container(
            width: double.infinity,
            height: 10,
            color: Colors.grey[200],
          ),
          Padding(padding: EdgeInsets.only(top: 10)),
          Row(
              children: [
                Padding(padding: EdgeInsets.only(left: 10)),
                Icon(Icons.category),
                Padding(padding: EdgeInsets.only(right: 10)),
                Text('Научная классификация', style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold))]
          ),
          Padding(padding: EdgeInsets.only(top: 10)),
          Padding(
            padding: EdgeInsets.symmetric(horizontal: 20),
            child: Column(
              children: [
                _linee(lineName: 'Род', lineId: 'genus', lineWidth: 90),
                _linee(lineName: 'Семейство', lineId: 'family', lineWidth: 100),
                _linee(lineName: 'Порядок', lineId: 'order', lineWidth: 105),
                _linee(lineName: 'Класс', lineId: 'class', lineWidth: 110),
                _linee(lineName: 'Отдел', lineId: 'phylum', lineWidth: 110),
                Padding(padding: EdgeInsets.only(top: 10)),
              ],
            ),
          ),
          Padding(padding: EdgeInsets.only(bottom: 10))
        ],
      ),
    );
  }
}

class _conditions extends StatelessWidget {
  const _conditions({super.key});

  @override
  Widget build(BuildContext context) {
    return Container(
      child: Column(
        children: [
          Container(
            width: double.infinity,
            height: 10,
            color: Colors.grey[200],
          ),
          Padding(padding: EdgeInsets.only(top: 10)),
          Row(
              children: [
                Padding(padding: EdgeInsets.only(left: 10)),
                Icon(Icons.flare),
                Padding(padding: EdgeInsets.only(right: 10)),
                Text('Условия', style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold))]
          ),
          Padding(padding: EdgeInsets.only(top: 10)),
          Padding(
            padding: EdgeInsets.symmetric(horizontal: 20),
            child: Column(
              children: [
                _lineWithIcon(lineIconColor: Colors.blue, lineIcon: Icons.thermostat, lineWithIconName: 'Температура', lineWithIconId: 'temperature'),
                _lineWithIcon(lineIconColor: Colors.green, lineIcon: Icons.location_on, lineWithIconName: 'Расположение', lineWithIconId: 'locate'),
                _lineWithIcon(lineIconColor: Colors.orange[400], lineIcon: Icons.sunny, lineWithIconName: 'Солнечный свет', lineWithIconId: 'sun'),
                _lineWithIcon(lineIconColor: Colors.brown, lineIcon: MyFlutterApp.pot, lineWithIconName: 'Земля', lineWithIconId: 'dirt'),
                Padding(padding: EdgeInsets.only(top: 10)),
              ],
            ),
          ),
          Padding(padding: EdgeInsets.only(bottom: 10))
        ],
      ),
    );
  }
}

class _guide extends StatelessWidget {
  const _guide({super.key});

  @override
  Widget build(BuildContext context) {
    return Container(
      child: Column(
        children: [
          Container(
            width: double.infinity,
            height: 10,
            color: Colors.grey[200],
          ),
          Padding(padding: EdgeInsets.only(top: 10)),
          Row(
              children: [
                Padding(padding: EdgeInsets.only(left: 10)),
                Icon(MyFlutterApp.guidebook),
                Padding(padding: EdgeInsets.only(right: 10)),
                Text('Гид', style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold))]
          ),
          Padding(padding: EdgeInsets.only(top: 10)),
          Padding(
            padding: EdgeInsets.symmetric(horizontal: 20),
            child: Column(
              children: [
                _lineWithIcon(lineIconColor: Colors.blue, lineIcon: Icons.water_drop, lineWithIconName: 'Полив', lineWithIconId: 'watering'),
                _lineWithIcon(lineIconColor: Colors.orange, lineIcon: Icons.cut, lineWithIconName: 'Обрезка', lineWithIconId: 'cut'),
                _lineWithIcon(lineIconColor: Colors.green[600], lineIcon: MyFlutterApp.spread, lineWithIconName: 'Распространение', lineWithIconId: 'spreading'),
                _lineWithIcon(lineIconColor: Colors.orange, lineIcon: MyFlutterApp.upgrade, lineWithIconName: 'Преувеличение', lineWithIconId: 'repotting'),
                Padding(padding: EdgeInsets.only(top: 10)),
              ],
            ),
          ),
          Padding(padding: EdgeInsets.only(bottom: 10))
        ],
      ),
    );
  }
}