import 'package:Envelope/components/custom_title_bar.dart';
import 'package:Envelope/models/friends.dart';
import 'package:Envelope/utils/storage/conversations.dart';
import 'package:flutter/material.dart';

import '/models/conversations.dart';
import '/views/main/conversation/edit_details.dart';
import '/views/main/conversation/list_item.dart';
import 'create_add_users.dart';
import 'detail.dart';

class ConversationList extends StatefulWidget {
  final List<Conversation> conversations;
  final List<Friend> friends;
  const ConversationList({
    Key? key,
    required this.conversations,
    required this.friends,
  }) : super(key: key);

  @override
  State<ConversationList> createState() => _ConversationListState();
}

class _ConversationListState extends State<ConversationList> {
  List<Conversation> conversations = [];
  List<Friend> friends = [];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: const CustomTitleBar(
        title: Text(
          'Conversations',
          style: TextStyle(
            fontSize: 32,
            fontWeight: FontWeight.bold
          )
        ),
        showBack: false,
        backgroundColor: Colors.transparent,
      ),
     body: Padding(
       padding: const EdgeInsets.only(top: 16,left: 16,right: 16),
       child: SingleChildScrollView(
          child: Column(
            children: <Widget>[
             TextField(
               decoration: const InputDecoration(
                 hintText: "Search...",
                 prefixIcon: Icon(
                   Icons.search,
                   size: 20
                 ),
               ),
               onChanged: (value) => filterSearchResults(value.toLowerCase())
             ),
             list(),
          ],
        ),
      ),
    ),
    floatingActionButton: Padding(
        padding: const EdgeInsets.only(right: 10, bottom: 10),
        child: FloatingActionButton(
          onPressed: () {
            Navigator.of(context).push(
                MaterialPageRoute(builder: (context) => ConversationEditDetails(
                        saveCallback: (String conversationName) {
                          Navigator.of(context).push(
                            MaterialPageRoute(builder: (context) => ConversationAddFriendsList(
                                friends: friends,
                                saveCallback: (List<Friend> friendsSelected) async {
                                  Conversation conversation = await createConversation(
                                    conversationName,
                                    friendsSelected,
                                    false,
                                  );

                                  uploadConversation(conversation);

                                  Navigator.of(context).popUntil((route) => route.isFirst);
                                  Navigator.push(context, MaterialPageRoute(builder: (context){
                                    return ConversationDetail(
                                      conversation: conversation,
                                    );
                                  }));
                                },
                            ))
                          );
                        },
                )),
            ).then(onGoBack);
          },
          backgroundColor: Theme.of(context).colorScheme.primary,
          child: const Icon(Icons.add, size: 30),
        ),
      ),
    );
  }

  void filterSearchResults(String query) {
    List<Conversation> dummySearchList = [];
    dummySearchList.addAll(widget.conversations);

    if(query.isNotEmpty) {
      List<Conversation> dummyListData = [];
      for (Conversation item in dummySearchList) {
        if (item.name.toLowerCase().contains(query)) {
          dummyListData.add(item);
        }
      }
      setState(() {
        conversations.clear();
        conversations.addAll(dummyListData);
      });
      return;
    }

    setState(() {
      conversations.clear();
      conversations.addAll(widget.conversations);
    });
  }

  @override
  void initState() {
    super.initState();
    conversations.addAll(widget.conversations);
    friends.addAll(widget.friends);
    setState(() {});
  }

  Widget list() {
    if (conversations.isEmpty) {
      return const Center(
          child: Text('No Conversations'),
      );
    }

    return ListView.builder(
        itemCount: conversations.length,
        shrinkWrap: true,
        padding: const EdgeInsets.only(top: 16),
        physics: const NeverScrollableScrollPhysics(),
        itemBuilder: (context, i) {
          return ConversationListItem(
              conversation: conversations[i],
          );
        },
    );
  }

  onGoBack(dynamic value) async {
    conversations = await getConversations();
    friends = await getFriends();
    setState(() {});
  }
}