cssd/lib/pages/ItemPages/item_result_screen.dart

// ignore_for_file: unused_local_variable

import 'dart:isolate';
import 'dart:ui';

import 'package:cssd/config/colors.dart';
import 'package:cssd/providers/items.dart';
import 'package:cssd/widgets/ItemScreens/Filter/item_filter_object.dart';
import 'package:cssd/widgets/ItemScreens/Result/item_data_box.dart';
import 'package:flutter_downloader/flutter_downloader.dart';
import 'package:permission_handler/permission_handler.dart';

import '../../config/routes.dart';
import '../../providers/connectivity.dart';
import '../../widgets/CycleScreens/Result/banner.dart';
import '../../widgets/CycleScreens/Result/search_box.dart';
import '../../widgets/Global/internet_error.dart';

import 'package:flutter/material.dart';
import 'package:provider/provider.dart';

class ItemResultScreen extends StatefulWidget {
  final bool? isAdmin;

  ItemResultScreen({this.isAdmin});

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

class _ItemResultScreenState extends State<ItemResultScreen> {
  bool _isInit = true;
  ScrollController? sc;
  TextEditingController searchCTRL = new TextEditingController();
  ReceivePort _port = ReceivePort();

  @override
  void initState() {
    sc = new ScrollController();
    super.initState();
    IsolateNameServer.registerPortWithName(_port.sendPort, 'downloader_send_port');
    _port.listen((dynamic data) {
    String id = data[0];
    DownloadTaskStatus status = data[1];
    int progress = data[2];
    if (status == DownloadTaskStatus.complete) {
      print('Downloaded');
    }
    setState((){ });
  });

  FlutterDownloader.registerCallback(downloadCallback);
  }

  @pragma('vm:entry-point')
  static void downloadCallback(String id, int status, int progress) {
    final SendPort? send = IsolateNameServer.lookupPortByName('downloader_send_port');
    send!.send([id, status, progress]);
  }

  @override
  void didChangeDependencies() {
    if (_isInit) {
      var testResults = Provider.of<ItemProvider>(context);
      testResults.setLoading();
      testResults.resetPageNumber();
      testResults.getItemResults().then((_) {
        testResults.resetLoading();
        sc!.addListener(
          () {
            if (sc!.position.pixels == sc!.position.maxScrollExtent &&
                searchCTRL.text == '') {
              var testResults = Provider.of<ItemProvider>(
                context,
                listen: false,
              );
              testResults.getItemResults();
            }
          },
        );
      });
    }
    _isInit = false;
    super.didChangeDependencies();
  }

  @override
  void dispose() {
    IsolateNameServer.removePortNameMapping('downloader_send_port');
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    final _media = MediaQuery.of(context);
    final double _deviceWidth = _media.size.width;
    final double _deviceBlockSize = _deviceWidth / 100;
    return SafeArea(
      child: GestureDetector(
        onTap: () {
          FocusManager.instance.primaryFocus?.unfocus();
        },
        child: Scaffold(
          floatingActionButton: ItemResultFloatingButton(
            deviceBlockSize: _deviceBlockSize,
          ),
          appBar: AppBar(
            titleSpacing: -10,
            title: Text('Home', style: TextStyle(color: Colors.white,),),
            backgroundColor: Colors.black,
            leading: IconButton(
              icon: Icon(
                Icons.keyboard_arrow_left,
                color: Colors.white,
                size: 35,
              ),
              onPressed: () => Navigator.of(context).pop(),
            ),
          ),
          body: Consumer<ConnectivityProvider>(
            builder: (ct, connection, _) {
              return connection.conStatus != 'offline'
                  ? Padding(
                      padding: EdgeInsets.only(
                        top: 20,
                        right: 20,
                        bottom: 60,
                        left: 20,
                      ),
                      child: Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: <Widget>[
                          ResultBanner(
                            deviceBlockSize: _deviceBlockSize,
                            text: 'Items',
                            push: Routes.itemFilterScreen,
                          ),
                          Consumer<ItemProvider>(
                            builder: (ctx, item, _) {
                              return Container(
                                height: 50,
                                child: ListView(
                                  scrollDirection: Axis.horizontal,
                                  shrinkWrap: true,
                                  children: <Widget>[
                                    item.filters!.id != ''
                                        ? ItemFilterChip(
                                            deviceBlockSize: _deviceBlockSize,
                                            label: 'ID',
                                            id: '',
                                            name: item.filters!.name,
                                            udi: item.filters!.udi,
                                            hospital: item.filters!.hospital,
                                            size: item.filters!.size,
                                            specific: item.filters!.specific,
                                          )
                                        : Container(),
                                    item.filters!.name != ''
                                        ? ItemFilterChip(
                                            deviceBlockSize: _deviceBlockSize,
                                            label: 'Item Name',
                                            id: item.filters!.id,
                                            name: '',
                                            udi: item.filters!.udi,
                                            hospital: item.filters!.hospital,
                                            size: item.filters!.size,
                                            specific: item.filters!.specific,
                                          )
                                        : Container(),
                                    item.filters!.udi != ''
                                        ? ItemFilterChip(
                                            deviceBlockSize: _deviceBlockSize,
                                            label: 'UDI',
                                            id: item.filters!.id,
                                            name: item.filters!.name,
                                            udi: '',
                                            hospital: item.filters!.hospital,
                                            size: item.filters!.size,
                                            specific: item.filters!.specific,
                                          )
                                        : Container(),
                                    item.filters!.hospital != ''
                                        ? ItemFilterChip(
                                            deviceBlockSize: _deviceBlockSize,
                                            label: 'Hospital',
                                            id: item.filters!.id,
                                            name: item.filters!.name,
                                            hospital: '',
                                            udi: item.filters!.udi,
                                            size: item.filters!.size,
                                            specific: item.filters!.specific,
                                          )
                                        : Container(),
                                    item.filters!.size != ''
                                        ? ItemFilterChip(
                                            deviceBlockSize: _deviceBlockSize,
                                            label: 'Size',
                                            id: item.filters!.id,
                                            name: item.filters!.name,
                                            udi: item.filters!.udi,
                                            hospital: item.filters!.hospital,
                                            size: '',
                                            specific: item.filters!.specific,
                                          )
                                        : Container(),
                                    item.filters!.specific != ''
                                        ? ItemFilterChip(
                                            deviceBlockSize: _deviceBlockSize,
                                            label: 'Specific',
                                            id: item.filters!.id,
                                            name: item.filters!.name,
                                            udi: item.filters!.udi,
                                            hospital: item.filters!.hospital,
                                            size: item.filters!.size,
                                            specific: '',
                                          )
                                        : Container(),
                                  ],
                                ),
                              );
                            },
                          ),
                          ResultSearchBox(
                            searchCTRL: searchCTRL,
                            text: 'item',
                            deviceBlockSize: _deviceBlockSize,
                            textInputType: TextInputType.visiblePassword,
                            text2: "Udi",
                            onChanged: (value) {
                              Provider.of<ItemProvider>(context, listen: false)
                                  .search(value);
                            },
                          ),
                          SizedBox(
                            height: 20,
                          ),
                          Expanded(
                            child: Consumer<ItemProvider>(
                              builder: (context, itemResults, _) {
                                return itemResults.isloading
                                    ? Center(
                                        child: CircularProgressIndicator(
                                          color: Colors.black,
                                        ),
                                      )
                                    : ListView.builder(
                                        controller: sc,
                                        itemBuilder: (context, index) {
                                          // remove extra ,
                                          return ItemItemBox(
                                            deviceBlockSize: _deviceBlockSize,
                                            item: itemResults.items?[index],
                                          );
                                        },
                                        itemCount: itemResults.items?.length,
                                        shrinkWrap: true,
                                      );
                              },
                            ),
                          ),
                        ],
                      ),
                    )
                  : ConnectionErrorBox();
            },
          ),
        ),
      ),
    );
  }
}

class ItemResultFloatingButton extends StatelessWidget {
  const ItemResultFloatingButton({
    Key? key,
    required double deviceBlockSize,
  })  : _deviceBlockSize = deviceBlockSize,
        super(key: key);

  final double _deviceBlockSize;

  @override
  Widget build(BuildContext context) {
    return Row(
      mainAxisAlignment: MainAxisAlignment.end,
      children: <Widget>[
        InkWell(
          customBorder: CircleBorder(),
          onTap: () async {
            var status = await Permission.storage.request();
            if (status.isGranted) {
              Provider.of<ItemProvider>(context, listen: false).exportItems();
            }
          },
          child: Container(
            padding: EdgeInsets.all(_deviceBlockSize),
            decoration: BoxDecoration(
              shape: BoxShape.circle,
              color: Colors.black,
            ),
            child: Icon(
              Icons.import_export,
              size: 10 * _deviceBlockSize,
              color: Colors.white,
            ),
          ),
        ),
        SizedBox(
          width: 2 * _deviceBlockSize,
        ),
        InkWell(
          customBorder: CircleBorder(),
          onTap: () {
            Navigator.of(context).pushNamed(Routes.itemScanScreen);
          },
          child: Container(
            padding: EdgeInsets.all(2.5 * _deviceBlockSize),
            decoration: BoxDecoration(
              shape: BoxShape.circle,
              color: Colors.black,
            ),
            child: Icon(
              Icons.qr_code_scanner,
              size: 7.1 * _deviceBlockSize,
              color: Colors.white,
            ),
          ),
        ),
        SizedBox(
          width: 2 * _deviceBlockSize,
        ),
        InkWell(
          customBorder: CircleBorder(),
          onTap: () {
            Navigator.of(context).pushReplacementNamed(Routes.itemAddScreen);
          },
          child: Container(
            padding: EdgeInsets.all(_deviceBlockSize),
            decoration: BoxDecoration(
              shape: BoxShape.circle,
              color: kBlue,
            ),
            child: Icon(
              Icons.add,
              size: 10 * _deviceBlockSize,
              color: Colors.white,
            ),
          ),
        ),
      ],
    );
  }
}