input_page.dart

// ignore_for_file: prefer_const_constructors, prefer_const_literals_to_create_immutables
import 'package:Bmi/screens/results_page.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter/widgets.dart';
import 'package:font_awesome_flutter/font_awesome_flutter.dart';
import '../components/icon_content.dart';
import '../components/reusable_card.dart';
import '../constants.dart';
import 'package:Bmi/components/round_icon_button.dart';
import '../components/bottom_button.dart';
import 'package:Bmi/calculator_brain.dart';

enum Gender {
  male,
  female,
}

class InputPage extends StatefulWidget {
  @override
  State<InputPage> createState() => _InputPageState();
}

class _InputPageState extends State<InputPage> {
  int height = 180, weight = 60, age = 18;
  Gender selectedGender = Gender.male;
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Center(
          child: Text(
            'BMI App',
          ),
        ),
      ),
      body: Column(
        crossAxisAlignment: CrossAxisAlignment
            .stretch, // stretches containers to max possible width
        children: [
          Expanded(
            child: Row(
              children: [
                Expanded(
                  child: ReusableCard(
                    onPress: () {
                      setState(() {
                        selectedGender = Gender.male;
                      });
                    },
                    colour: selectedGender == Gender.male
                        ? kActiveCardColour
                        : kInactiveCardColour,
                    cardChild: IconContent(
                      icon: FontAwesomeIcons.mars,
                      label: 'Male',
                    ),
                  ),
                ),
                Expanded(
                  child: ReusableCard(
                    onPress: () {
                      setState(() {
                        selectedGender = Gender.female;
                      });
                    },
                    colour: selectedGender == Gender.female
                        ? kActiveCardColour
                        : kInactiveCardColour,
                    cardChild: IconContent(
                      icon: FontAwesomeIcons.venus,
                      label: 'Female',
                    ),
                  ),
                ),
              ],
            ),
          ),
          Expanded(
            child: ReusableCard(
              onPress: () {},
              colour: kActiveCardColour,
              cardChild: Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  Text(
                    'Height',
                    style: kLabelTextStyle,
                  ),
                  Row(
                    mainAxisAlignment: MainAxisAlignment.center,
                    crossAxisAlignment: CrossAxisAlignment.baseline,
                    textBaseline: TextBaseline.alphabetic,
                    children: [
                      Text(
                        height.toString(),
                        style: kNumberTextStyle,
                      ),
                      Text(
                        ' cm',
                        style: kLabelTextStyle,
                      ),
                    ],
                  ),
                  SliderTheme(
                    data: SliderTheme.of(context).copyWith(
                      inactiveTrackColor: Color(0xFF8D8E98),
                      activeTrackColor: Colors.white,
                      thumbColor: Color(0xFFEB1555),
                      overlayColor: Color(0x29EB1555),
                      thumbShape: RoundSliderThumbShape(
                        enabledThumbRadius: 10,
                      ),
                      overlayShape: RoundSliderOverlayShape(
                        overlayRadius: 20,
                      ),
                    ),
                    child: Slider(
                      value: height.toDouble(),
                      min: 120.0,
                      max: 220.0,
                      onChanged: (double newValue) {
                        setState(() {
                          height = newValue.round();
                        });
                      },
                    ),
                  ),
                ],
              ),
            ),
          ),
          Expanded(
            child: Row(
              children: [
                Expanded(
                  child: ReusableCard(
                    onPress: () {},
                    colour: kActiveCardColour,
                    cardChild: Column(
                      mainAxisAlignment: MainAxisAlignment.center,
                      children: [
                        Text(
                          'Weight',
                          style: kLabelTextStyle,
                        ),
                        Text(
                          weight.toString(),
                          style: kNumberTextStyle,
                        ),
                        Row(
                          mainAxisAlignment: MainAxisAlignment.center,
                          children: [
                            RoundIconButton(
                                icon: FontAwesomeIcons.minus,
                                onPressed: () {
                                  setState(() {
                                    weight--;
                                  });
                                }),
                            SizedBox(
                              width: 10,
                            ),
                            RoundIconButton(
                                icon: FontAwesomeIcons.plus,
                                onPressed: () {
                                  setState(() {
                                    weight++;
                                  });
                                }),
                          ],
                        ),
                      ],
                    ),
                  ),
                ),
                Expanded(
                  child: ReusableCard(
                    onPress: () {},
                    colour: kActiveCardColour,
                    cardChild: Column(
                      mainAxisAlignment: MainAxisAlignment.center,
                      children: [
                        Text(
                          'Age',
                          style: kLabelTextStyle,
                        ),
                        Text(
                          age.toString(),
                          style: kNumberTextStyle,
                        ),
                        Row(
                          mainAxisAlignment: MainAxisAlignment.center,
                          children: [
                            RoundIconButton(
                                icon: FontAwesomeIcons.minus,
                                onPressed: () {
                                  setState(() {
                                    age--;
                                  });
                                }),
                            SizedBox(
                              width: 10,
                            ),
                            RoundIconButton(
                                icon: FontAwesomeIcons.plus,
                                onPressed: () {
                                  setState(() {
                                    age++;
                                  });
                                }),
                          ],
                        ),
                      ],
                    ),
                  ),
                ),
              ],
            ),
          ),
          BottomButton(
            buttonTitle: 'CALCULATE',
            onTap: () {
              CalculatorBrain calc =
                  CalculatorBrain(height: height, weight: weight);
              String r = calc.calculateBMI();
              Navigator.push(
                context,
                MaterialPageRoute(
                  builder: (context) {
                    return ResultsPage(
                      bmiResult: r,
                      resultText: calc.getResult(),
                      interpretation: calc.getInterpretation(),
                    );
                  },
                ),
              );
            },
          ),
        ],
      ),
    );
  }
}