mohemm-flutter-app/lib/ui/screens/announcements/announcements.dart

import 'dart:convert';

import 'package:flutter/material.dart';
import 'package:mohem_flutter_app/api/pending_transactions_api_client.dart';
import 'package:mohem_flutter_app/app_state/app_state.dart';
import 'package:mohem_flutter_app/classes/colors.dart';
import 'package:mohem_flutter_app/classes/utils.dart';
import 'package:mohem_flutter_app/config/routes.dart';
import 'package:mohem_flutter_app/extensions/int_extensions.dart';
import 'package:mohem_flutter_app/extensions/string_extensions.dart';
import 'package:mohem_flutter_app/models/get_announcements.dart';
import 'package:mohem_flutter_app/widgets/app_bar_widget.dart';
import 'package:mohem_flutter_app/widgets/dynamic_forms/dynamic_textfield_widget.dart';

class Announcements extends StatefulWidget {
  const Announcements({Key? key}) : super(key: key);

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

class _AnnouncementsState extends State<Announcements> {
  String jsonResponse = "";
  int currentPageNo = 1;
  int currentOpenIndex = -1;

  List<GetAnnouncementsObject> getAnnouncementsObject = [];
  List<GetAnnouncementsObject> _foundAnnouncements = [];
  TextEditingController searchController = TextEditingController();
  final ScrollController _controller = ScrollController();

  @override
  void initState() {
    getAnnouncements(0, 0);
    super.initState();
    _controller.addListener(() {
      if (_controller.position.atEdge) {
        bool isTop = _controller.position.pixels == 0;
        if (!isTop) {
          print('At the bottom');
          currentPageNo++;
          getAnnouncements(0, 0);
        }
      }
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.white,
      appBar: AppBarWidget(
        context,
        title: "Announcements",
      ),
      body: getAnnouncementsObject.isNotEmpty
          ? Container(
              margin: const EdgeInsets.only(top: 10.0),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                mainAxisSize: MainAxisSize.min,
                children: [
                  12.height,
                  Container(
                    margin: const EdgeInsets.fromLTRB(12.0, 0.0, 12.0, 0.0),
                    child: DynamicTextFieldWidget(
                      "Search",
                      "Search Announcements",
                      isEnable: true,
                      suffixIconData: Icons.search,
                      isPopup: false,
                      lines: 1,
                      isInputTypeNum: false,
                      isReadOnly: false,
                      onChange: (String value) {
                        _runFilter(value);
                      },
                    ),
                  ),
                  12.height,
                  Expanded(
                      child: ListView.separated(
                          physics: const BouncingScrollPhysics(),
                          shrinkWrap: true,
                          controller: _controller,
                          itemBuilder: (BuildContext context, int index) {
                            return InkWell(
                              onTap: () {
                                openAnnouncementsDetails(int.parse(_foundAnnouncements[index].rowID!));
                              },
                              child: Container(
                                width: double.infinity,
                                padding: const EdgeInsets.all(10.0),
                                margin: const EdgeInsets.only(left: 12, right: 12, top: 10),
                                decoration: BoxDecoration(
                                  color: Colors.white,
                                  borderRadius: BorderRadius.circular(10),
                                  boxShadow: [
                                    BoxShadow(
                                      color: const Color(0xff000000).withOpacity(.05),
                                      blurRadius: 26,
                                      offset: const Offset(0, -3),
                                    ),
                                  ],
                                ),
                                child: Row(
                                  crossAxisAlignment: CrossAxisAlignment.start,
                                  mainAxisAlignment: MainAxisAlignment.start,
                                  children: [
                                    SizedBox(
                                      width: 80.0,
                                      height: 80.0,
                                      child: ClipRRect(
                                        borderRadius: BorderRadius.circular(10),
                                        child: Image.memory(
                                          base64Decode(Utils.getBase64FromJpeg(_foundAnnouncements[index].bannerImage)),
                                          fit: BoxFit.cover,
                                        ),
                                      ),
                                    ),
                                    12.width,
                                    SizedBox(
                                      height: 80.0,
                                      width: 200.0,
                                      child: Column(
                                        crossAxisAlignment: CrossAxisAlignment.start,
                                        children: [
                                          AppState().isArabic(context) ? _foundAnnouncements[index].titleAR!.toText13() : getAnnouncementsObject[index].titleEN!.toText13(),
                                          8.height,
                                          _foundAnnouncements[index].created!.toText10(color: MyColors.grey98Color)
                                        ],
                                      ),
                                    ),
                                  ],
                                ),
                              ),
                            );
                          },
                          separatorBuilder: (BuildContext context, int index) => 1.height,
                          itemCount: _foundAnnouncements.length ?? 0)),
                  20.height,
                ],
              ),
            )
          : Utils.getNoDataWidget(context),
    );
  }

  void _runFilter(String enteredKeyword) {
    List<GetAnnouncementsObject> results = [];
    if (enteredKeyword.isEmpty) {
      results = getAnnouncementsObject;
    } else {
      results = getAnnouncementsObject.where((user) => user.titleEN!.toLowerCase().contains(enteredKeyword.toLowerCase())).toList();
    }
    setState(() {
      _foundAnnouncements = results;
    });
  }

  void getAnnouncements(int itgAwarenessID, int itgRowID) async {
    try {
      Utils.showLoading(context);
      jsonResponse = await PendingTransactionsApiClient().getAnnouncements(itgAwarenessID, currentPageNo, itgRowID);
      var jsonDecodedData = jsonDecode(jsonDecode(jsonResponse)['result']['data']);
      for (int i = 0; i < jsonDecodedData.length; i++) {
        getAnnouncementsObject.add(GetAnnouncementsObject.fromJson(jsonDecodedData[i]));
      }
      _foundAnnouncements = getAnnouncementsObject;
      Utils.hideLoading(context);
      setState(() {});
    } catch (ex) {
      Utils.hideLoading(context);
      Utils.handleException(ex, context, null);
    }
  }

  void openAnnouncementsDetails(int rowID) async {
    await Navigator.pushNamed(context, AppRoutes.announcementsDetails, arguments: {"currentPageNo": currentPageNo, "rowID": rowID});
  }
}