sandbox bag color

sandbox_bag_color.dart

// Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'sandbox',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'sandbox'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  final String title;

  const MyHomePage({
    Key? key,
    required this.title,
  }) : super(key: key);

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


List<Color> allColors = [Colors.pink, Colors.orange, Colors.blue];


class _MyHomePageState extends State<MyHomePage> {
  List<Widget> outputWidget = <Widget>[];
  Color face = allColors.first;
  Color strap = allColors.first;
  Color lining = allColors.first;
  final cContainers = <Container>[];
  
  @override
  initState(){
    super.initState();
  for (final c in allColors){
    cContainers.add(Container(color: c, child : Text(' _ ')));      
    }  
  }
  
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Text('couleurs disponibles :'),
            Row(mainAxisAlignment : MainAxisAlignment.center, children :  cContainers),
            Text('leather parts :'),
            Row(mainAxisAlignment: MainAxisAlignment.center,
              children: [
              Text('face:', style: TextStyle(color: face)),
              DropdownButton<Color>(
                value: face,
                elevation: 16,
                onChanged: (Color? newValue) {
                  setState(() {
                    face = newValue!;
                  });
                },
                items: allColors.map<DropdownMenuItem<Color>>((Color value) {
                  return DropdownMenuItem<Color>(
                    value: value,
                    child: Container(color: value),
                  );
                }).toList(),
              ),
              const SizedBox(width: 12),
              Text('strap:', style: TextStyle(color: strap)),
              DropdownButton<Color>(
                value: strap,
                elevation: 16,
                onChanged: (Color? newValue) {
                  setState(() {
                    strap = newValue!;
                  });
                },
                items: allColors.map<DropdownMenuItem<Color>>((Color value) {
                  return DropdownMenuItem<Color>(
                    value: value,
                    child: Container(color: value),
                  );
                }).toList(),
              ),
              const SizedBox(width : 12),
              Text('lining:', style: TextStyle(color: lining)),
              DropdownButton<Color>(
                value: lining,
                elevation: 16,
                onChanged: (Color? newValue) {
                  setState(() {
                    lining = newValue!;
                  });
                },
                items: allColors.map<DropdownMenuItem<Color>>((Color value) {
                  return DropdownMenuItem<Color>(
                    value: value,
                    child: Container(color: value),
                  );
                }).toList(),
              )
            ]),
            if(outputWidget.isNotEmpty) Text('fils : '),
                        for(final o in outputWidget) o,
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: const Icon(Icons.add),
      ),
    );
  }
    
  void _incrementCounter() async {
    outputWidget = <Widget>[];
    final combosOutput = await getAvailableThreadColorsCombination(LeatherColorsInput(face,strap,lining));
    if(combosOutput == null){
setState(() {
outputWidget = <Widget>[];
          print('output updated');
    });
      return ;
    }
    final listC1 = <Container>[];
    for (final c in combosOutput!.tone_on_tone.face_thread_colors){
    listC1.add(Container(color: c, child : Text('face')));      
    }
    outputWidget.add(Row(mainAxisAlignment: MainAxisAlignment.center, children : listC1));
    final listC2 = <Container>[];
    for (final c in combosOutput!.tone_on_tone.strap_thread_colors){
    listC2.add(Container(color: c, child: Text('strap')));      
    }
    outputWidget.add(Row(mainAxisAlignment: MainAxisAlignment.center, children : listC2));
    final listC3 = <Container>[];
    for (final c in combosOutput!.tone_on_tone.lining_thread_colors){
    listC3.add(Container(color: c, child: Text('lining')));      
    }
    outputWidget.add(Row(mainAxisAlignment: MainAxisAlignment.center, children : listC3));
    outputWidget.add(Text('///'));
    
    // reversed
    final listC4 = <Container>[];
    for (final c in combosOutput!.reversed.face_thread_colors){
    listC4.add(Container(color: c, child: Text('face')));      
    }    
    outputWidget.add(Row(mainAxisAlignment: MainAxisAlignment.center, children : listC4));

        final listC5 = <Container>[];
    for (final c in combosOutput!.reversed.strap_thread_colors){
    listC5.add(Container(color: c, child: Text('strap')));      
    }
        outputWidget.add(Row(mainAxisAlignment: MainAxisAlignment.center, children : listC5));

        final listC6 = <Container>[];
    for (final c in combosOutput!.reversed.lining_thread_colors){
    listC6.add(Container(color: c, child: Text('lining')));      
    }
    outputWidget.add(Row(mainAxisAlignment: MainAxisAlignment.center, children : listC6));
    outputWidget.add(Text('///'));
    
    // lining 
    final listC7 = <Container>[];
    for (final c in combosOutput!.free_form.face_thread_colors){
    listC7.add(Container(color: c, child: Text('face')));      
    }
    outputWidget.add(Row(mainAxisAlignment: MainAxisAlignment.center, children : listC7));

    final listC8 = <Container>[];
    for (final c in combosOutput!.free_form.strap_thread_colors){
    listC8.add(Container(color: c, child: Text('strap')));      
    }
        outputWidget.add(Row(mainAxisAlignment: MainAxisAlignment.center, children : listC8));

    final listC9 = <Container>[];
    for (final c in combosOutput!.free_form.lining_thread_colors){
    listC9.add(Container(color: c, child : Text('lining')));      
    }
        outputWidget.add(Row(mainAxisAlignment: MainAxisAlignment.center, children : listC9));

        setState(() {
outputWidget = outputWidget;
          print('output updated');
    });
  }
}


class LeatherColorsInput{
    Color face_color;
    Color strap_color;
    Color lining_color;
    LeatherColorsInput(
        this.face_color,
        this.strap_color,
        this.lining_color,
    );
}

class CombosOutput {
    ThreadColorCombo tone_on_tone;
    ThreadColorCombo reversed;
    ThreadColorCombo free_form;
    CombosOutput(this.tone_on_tone, this.reversed, this.free_form);
    @override 
    toString(){
      return 'toneOnTone : $tone_on_tone\ninverted : $reversed\nother: $free_form';
    }
}

class ThreadColorCombo{
    List<Color> face_thread_colors;
    List<Color> strap_thread_colors;
    List<Color> lining_thread_colors;
    int equality_mask;
    ThreadColorCombo(this.face_thread_colors, this.strap_thread_colors, this.lining_thread_colors, this.equality_mask);
    @override 
    toString(){
      return '${face_thread_colors.first.value}, $strap_thread_colors, $lining_thread_colors, $equality_mask';
    }
}



Future<CombosOutput?> getAvailableThreadColorsCombination(LeatherColorsInput lCI) async {
        var leatherColorsCombo = '';
        if(lCI.face_color == lCI.strap_color && lCI.strap_color == lCI.lining_color){
            leatherColorsCombo = 'sameLeatherColors';
        } else if(lCI.face_color == lCI.strap_color && lCI.face_color != lCI.lining_color) {
            leatherColorsCombo = 'diffLeatherColorsLiningColorIsUnique';        
        } else if (lCI.face_color == lCI.lining_color && lCI.face_color != lCI.strap_color) {
            leatherColorsCombo = 'diffLeatherColorsStrapColorIsUnique';
        } else{ //if (lCI.face_color != lCI.strap_color && lCI.face_color != lCI.lining_color){
            return null;
        } 
    
    switch (leatherColorsCombo){
        case 'sameLeatherColors':
        final d = [Colors.orange, Colors.blue, Colors.pink]..remove(lCI.face_color);
        final _tone_on_tone = ThreadColorCombo(
            d,d,d,111);
        return CombosOutput(_tone_on_tone, _tone_on_tone, _tone_on_tone);
        case 'diffLeatherColorsLiningColorIsUnique':
        final _tone_on_toneV2 = ThreadColorCombo(
            [lCI.face_color],
            [lCI.strap_color], 
            [lCI.lining_color], 
            110);
        final _reversedV2 = ThreadColorCombo(
            [lCI.lining_color], 
            [lCI.lining_color], 
            [lCI.face_color], 
            110);
        final dd = [Colors.orange, Colors.blue, Colors.pink]..remove(lCI.lining_color);
        final _free_formV2 = ThreadColorCombo(
            dd,
            dd, 
            [lCI.lining_color], 
            110);
        return CombosOutput(_tone_on_toneV2, _reversedV2, _free_formV2);
        
        case 'diffLeatherColorsStrapColorIsUnique':
             final _tone_on_toneV3 = ThreadColorCombo(
            [lCI.face_color], 
            [lCI.strap_color], 
            [lCI.lining_color], 
            101);
        final _reversedV3 = ThreadColorCombo(
            [lCI.strap_color],
            [lCI.face_color], 
            [lCI.face_color], 
            011);
        final _free_formV3 = ThreadColorCombo(
            allColors, // ? 
            allColors, // ? 
            [lCI.face_color], 
            110);
        return CombosOutput(_tone_on_toneV3, _reversedV3, _free_formV3);
    }
}