Teso_Mobile/lib/Pages/Sub_Pages/Desires Come True/AddDesire.dart

import 'package:teso/Classes/API%20Clasess/Desire.dart';
import 'package:flutter/material.dart';

import 'package:teso/Classes/customTesoButton.dart';
import 'package:teso/util/consts.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:http/http.dart' as http;
import 'dart:convert';
import 'package:teso/Pages/PageWidgets/DesireComeTrue/DesireTile.dart';
import 'NotListed.dart';
import 'package:jiffy/jiffy.dart';

class NewDesire extends StatefulWidget {
  final List<Desire> selected;

  const NewDesire({Key key, this.selected}) : super(key: key);
  @override
  _NewDesireState createState() => _NewDesireState();
}

class _NewDesireState extends State<NewDesire> {
  List<Desire> newdesire = <Desire>[];
  List<Desire> newdesireMain = <Desire>[];
  var search = new TextEditingController();
  SharedPreferences prefs;
  List<String> selectList = <String>[];

  @override
  void initState() {
    super.initState();
    search.addListener(() async {
      if (search.text.isNotEmpty) {
        lookItem();
      } else {
        setState(() {
          newdesire.clear();
        });
      }
    });
    selectList = widget.selected.map((e) => e.productID).toList();
  }

  lookItem() async {
    prefs = await SharedPreferences.getInstance();
    String token = prefs.getString("tokensTeso");
    Map<String, String> requestHeaders = {
      'Content-type': 'application/json',
      'Authorization': token
    };
    String searchValue = search.text.toString();
    var register = serverLocation + 'products/desire-product';
    var client = await http.post(Uri.parse(register),
        body: json.encode(searchValue), headers: requestHeaders);
    if (client.statusCode == 200) {
      var items = jsonDecode(client.body);

      newdesireMain = List<Desire>.from(
          items.map((model) => Desire.fromJSON(model)).toList());
      updateList();
    } else {
      if (mounted) {
        setState(() {
          newdesireMain.clear();
        });
      }
    }
  }

  updateList() {
    if (mounted) {
      setState(() {
        newdesireMain
            .removeWhere((element) => selectList.contains(element.productID));
        newdesire = newdesireMain;
        newdesire.sort((a, b) {
          return b.productName.compareTo(a.productName);
        });
      });
    }
  }

  addItem(Desire item) {
    if (mounted)
      setState(() {
        widget.selected.add(item);
        selectList.add(item.productID);
        newdesire.remove(item);
      });
  }

  @override
  void dispose() {
    search.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: PreferredSize(
          child: Container(
            padding: EdgeInsets.symmetric(horizontal: 10),
            margin: EdgeInsets.only(top: 30),
            child: Row(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: <Widget>[
                Expanded(
                  child: Material(
                    color: Colors.black54,
                    elevation: 0,
                    borderRadius: BorderRadius.circular(30.0),
                    child: Row(
                      children: <Widget>[
                        new Expanded(
                          child: TextField(
                            autofocus: false,
                            textAlign: TextAlign.start,
                            controller: search,
                            style: TextStyle(
                              color: Colors.white,
                            ),
                            decoration: InputDecoration(
                              border: InputBorder.none,
                              contentPadding:
                                  EdgeInsets.symmetric(horizontal: 14.0),
                              hintText: "Search",
                              hintStyle: TextStyle(color: Colors.grey),
                            ),
                          ),
                        ),
                        Container(
                          child: InkWell(
                            onTap: () => search.clear(),
                            child: Icon(
                              Icons.close_outlined,
                              color: Colors.white,
                            ),
                          ),
                          margin: EdgeInsets.symmetric(horizontal: 20),
                        ),
                      ],
                    ),
                  ),
                ),
                SizedBox(
                  width: 15,
                ),
                Container(
                  child: RaisedGradientButton(
                    child: Text(
                      "Done",
                      style: TextStyle(color: Colors.white, fontSize: 15),
                    ),
                    gradient: LinearGradient(
                      begin: Alignment.topCenter,
                      end: Alignment.bottomCenter,
                      colors: [
                        tesoGold,
                        tesoGold,
                      ],
                    ),
                    onPressed: () {
                      SharedPreferences.getInstance().then((value) {
                        var jiffy = Jiffy()..add(months: 1);
                        value.setString("desire" + jiffy.format("MMMM, yyyy"),
                            widget.selected.toString());
                      });
                      Navigator.pop(context, true);
                    },
                    width: 70,
                    height: 50,
                  ),
                ),
              ],
            ),
          ),
          preferredSize: Size.fromHeight(50.0)),
      body: newdesire.length == 0 && search.text.length != 0
          ? InkWell(
              onTap: () async {
                Desire unlistedDesire = await showDialog(
                    context: context,
                    builder: (BuildContext bc) {
                      return AlertDialog(
                        content: NotListed(
                          productName: search.text,
                        ),
                      );
                    });
                if (unlistedDesire != null) widget.selected.add(unlistedDesire);
                search.clear();
              },
              child: Container(
                padding: EdgeInsets.all(20),
                width: MediaQuery.of(context).size.width,
                child: Center(
                  child: Container(
                    child: Wrap(
                      //direction: Axis.vertical,
                      children: [
                        Container(
                          child: Text(
                            "Sorry, the product you entered has not been posted by any business. ",
                            textAlign: TextAlign.center,
                            style: TextStyle(fontSize: 16),
                          ),
                        ),
                        Text(
                          "Click here to have the product enlisted and sent to the appropriate businesses.",
                          textAlign: TextAlign.center,
                          style: TextStyle(color: tesoBlue, fontSize: 16.5),
                        ),
                      ],
                    ),
                  ),
                ),
              ),
            )
          : ListView.builder(
              itemCount: newdesire.length,
              itemBuilder: (context, int index) {
                if (newdesire.length == 0 && search.text.length == 0) {
                  return Container();
                } else {
                  if (!widget.selected.contains(newdesire.elementAt(index))) {
                    return buildProductDesire(
                        context, newdesire.elementAt(index), addItem);
                  } else {
                    return Container();
                  }
                }
              },
            ),
    );
  }
}