Teso_Mobile/lib/Pages/Sub_Pages/Notifications/Inbox.dart

import 'dart:async';
import 'dart:typed_data';
import 'package:intl/intl.dart';
import 'package:teso/Classes/TesoUser.dart';
import 'package:teso/Classes/inbox.dart';
import 'package:teso/Pages/PageWidgets/Inbox/inboxTile.dart';
import 'package:teso/Pages/Sub_Pages/Notifications/ChatScreen.dart';
import 'package:teso/providers/pageAnimations.dart';
import 'package:flutter/material.dart';
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:teso/providers/user_provider.dart';
import 'package:provider/provider.dart';
import 'package:flutter/cupertino.dart';

class Inbox extends StatefulWidget {
  final TesoUser user;

  const Inbox({Key key, this.user}) : super(key: key);
  @override
  _InboxState createState() => _InboxState(user: this.user);
}

class _InboxState extends State<Inbox> {
  final TesoUser user;
  TesoUser currentUser = new TesoUser();
  TextEditingController controller = new TextEditingController();
  Uint8List bytes;
  List<QueryDocumentSnapshot> listMessage = new List.from([]);
  String id;
  SharedPreferences prefs;
  Timer timer;
  int counter = 0;

  _InboxState({this.user});

  @override
  void initState() {
    readLocal();
    super.initState();
    timer = Timer.periodic(Duration(seconds: 30), (Timer t) => addValue());
  }

  void addValue() {
    setState(() {
      counter++;
    });
  }

  @override
  void dispose() {
    controller.dispose();
    timer?.cancel();
    super.dispose();
  }

  readLocal() async {
    prefs = await SharedPreferences.getInstance();
    id = prefs.getString('id') ?? '';
    setState(() {});
  }

  @override
  Widget build(BuildContext context) {
    currentUser = Provider.of<UserProvider>(context, listen: false).currentUser;
    return Scaffold(
      body: StreamBuilder(
          stream: FirebaseFirestore.instance
              .collection('inbox')
              .doc(id)
              .collection("lastMessage")
              .orderBy("timestamp", descending: false)
              .snapshots(),
          builder: (context, snapshot) {
            if (snapshot.data == null) {
              return Container(
                child: Center(
                  child: CupertinoActivityIndicator(
                    animating: true,
                    radius: 15,
                  ),
                ),
              );
            } else {
              listMessage = snapshot.data.docs;
              return ListView.builder(
                padding: EdgeInsets.all(5.0),
                itemCount: listMessage.length,
                itemBuilder: (context, index) {
                  int timeInMillis =
                      int.parse(snapshot.data.docs[index].data()['timestamp']);
                  var date = DateTime.fromMillisecondsSinceEpoch(timeInMillis);
                  var formattedDate =
                      DateFormat("yyyy-MM-dd HH:mm:ss").format(date);
                  TesoUser username = new TesoUser();
                  username.userGUID =
                      snapshot.data.docs[index].data()['peerID'];
                  username.firstname =
                      snapshot.data.docs[index].data()['firstname'];
                  username.lastname =
                      snapshot.data.docs[index].data()['surname'];
                  username.thumbnail_dp =
                      snapshot.data.docs[index].data()['thumbnail'];
                  username.username =
                      snapshot.data.docs[index].data()['username'];

                  InboxMessage message = new InboxMessage();
                  message.bio = "";
                  message.userID = snapshot.data.docs[index].data()['peerID'];
                  message.firstname =
                      snapshot.data.docs[index].data()['firstname'];
                  message.surname = snapshot.data.docs[index].data()['surname'];
                  message.thumbnail =
                      snapshot.data.docs[index].data()['thumbnail'];
                  message.message = snapshot.data.docs[index].data()['content'];
                  message.timestamp = DateTime.parse(formattedDate);
                  message.messageID = listMessage[index].reference.toString();
                  bool status;
                  if (snapshot.data.docs[index].data()['senderID'] == id) {
                    status = true;
                  } else if (snapshot.data.docs[index].data()['senderID'] !=
                          id &&
                      !listMessage[index]['read']) {
                    status = false;
                  } else {
                    status = true;
                  }
                  return InkWell(
                    onTap: () => Navigator.push(
                      context,
                      PageTransition(
                          child: ChatScreen(
                            user: username,
                          ),
                          type: PageTransitionType.leftToRightWithFade),
                    ),
                    child: buildInboxTile(context, message, status),
                  );
                },
              );
            }
          }),
    );
  }
}