import React, { useState, useEffect, useRef, useCallback } from 'react';
import {
  View,
  Text,
  TouchableOpacity,
  StyleSheet,
  Image,
  Platform,
  TouchableHighlight
} from 'react-native';
import { HorizontalTabView, Input, PageWrapper } from 'src/components';
import { NAVIGATION_PAGES } from 'src/types';
import { useFocusEffect, useNavigation } from '@react-navigation/native';

import AddChatIcon from 'assets/icons/messages/chat-plus.svg';
import { API_HOST } from 'src/constants';
import { Colors } from 'src/theme';
import { getFontSize } from 'src/utils';
import SwipeableRow from './Components/SwipeableRow';
import { FlashList } from '@shopify/flash-list';

import ReadIcon from 'assets/icons/messages/check-read.svg';
import UnreadIcon from 'assets/icons/messages/check-unread.svg';
import SearchModal from './Components/SearchUsersModal';
import { SheetManager } from 'react-native-actions-sheet';
import MoreModal from './Components/MoreModal';
import SearchIcon from 'assets/icons/search.svg';
import { storage, StoreType } from 'src/storage';
import { usePostGetChatsListQuery } from '@api/chat';
import moment from 'moment';
import { Chat } from './types';

import PinIcon from 'assets/icons/messages/pin.svg';

type Routes = {
  key: 'all' | 'unread' | 'archived';
  title: string;
};

const MessagesScreen = () => {
  const navigation = useNavigation();
  const token = storage.get('token', StoreType.STRING) as string;
  const { data: chatsData, refetch } = usePostGetChatsListQuery(token, 0, true);
  const [chats, setChats] = useState<Chat[]>([]);
  const [index, setIndex] = useState(0);
  const [filteredChats, setFilteredChats] = useState<Chat[]>([]);
  const [search, setSearch] = useState('');
  const openRowRef = useRef<any>(null);

  const routes: Routes[] = [
    { key: 'all', title: 'All' },
    { key: 'unread', title: 'Unread' },
    { key: 'archived', title: 'Archived' }
  ];

  const handleRowOpen = (ref: any) => {
    if (openRowRef.current && openRowRef.current !== ref) {
      openRowRef.current.close();
    }
    openRowRef.current = ref;
  };

  useFocusEffect(() => {
    navigation.getParent()?.setOptions({
      tabBarStyle: {
        display: 'flex',
        ...Platform.select({
          android: {
            height: 58
          }
        })
      }
    });
  });

  useEffect(() => {
    if (chatsData && chatsData.conversations) {
      setChats(chatsData.conversations);
    }
  }, [chatsData]);

  useFocusEffect(
    useCallback(() => {
      refetch();
    }, [])
  );

  const filterChatsByTab = () => {
    if (index === 1) {
      setFilteredChats(
        chats
          .filter((chat: Chat) => chat.unread_count > 0)
          .sort((a: Chat, b: Chat) => b.pin - a.pin || b.pin_order - a.pin_order)
      );
    } else if (index === 2) {
      setFilteredChats([]);
    } else {
      setFilteredChats(
        chats.sort((a: Chat, b: Chat) => b.pin - a.pin || b.pin_order - a.pin_order)
      );
    }
  };

  useEffect(() => {
    filterChatsByTab();
  }, [index, chats]);

  const handleDeleteChat = (id: number) => {
    const updatedChats = chats.filter((chat: Chat) => chat.uid !== id);
    setChats(updatedChats);
  };

  const searchFilter = (text: string) => {
    if (text) {
      const newData =
        chats?.filter((item: Chat) => {
          const itemData = item.short ? item.short.toLowerCase() : ''.toLowerCase();
          const textData = text.toLowerCase();
          return itemData.indexOf(textData) > -1;
        }) ?? [];
      setFilteredChats(newData);
      setSearch(text);
    } else {
      filterChatsByTab();
      setSearch(text);
    }
  };

  const formatDate = (dateString: Date) => {
    const inputDate = moment.utc(dateString).local();
    const today = moment().local();

    const yesterday = moment().local().subtract(1, 'days');

    if (inputDate.isSame(today, 'day')) {
      return inputDate.format('HH:mm');
    }

    if (inputDate.isSame(yesterday, 'day')) {
      return 'yesterday';
    }

    if (!inputDate.isSame(today, 'year')) {
      return inputDate.format('DD.MM.YYYY');
    }

    return inputDate.format('DD.MM');
  };

  const renderChatItem = ({ item }: { item: Chat }) => {
    return (
      <SwipeableRow
        chat={{ id: item.uid, name: item.name, avatar: item.avatar, pin: item.pin }}
        onRowOpen={handleRowOpen}
        refetch={refetch}
      >
        <TouchableHighlight
          activeOpacity={0.8}
          onPress={() =>
            navigation.navigate(
              ...([
                NAVIGATION_PAGES.CHAT,
                {
                  id: item.uid,
                  name: item.name,
                  avatar: item.avatar
                }
              ] as never)
            )
          }
          underlayColor={Colors.FILL_LIGHT}
        >
          <View style={styles.chatItem}>
            <Image source={{ uri: API_HOST + item.avatar }} style={styles.avatar} />

            <View style={{ flex: 1, gap: 6 }}>
              <View style={[styles.rowContainer, { alignItems: 'center' }]}>
                <Text style={styles.chatName}>{item.name}</Text>

                <View style={{ flexDirection: 'row', alignItems: 'center', gap: 6 }}>
                  {item.pin === 1 ? <PinIcon height={12} fill={Colors.DARK_BLUE} /> : null}
                  {item.sent_by !== item.uid && item.status === 3 ? (
                    <ReadIcon fill={Colors.DARK_BLUE} />
                  ) : item.sent_by !== item.uid && (item.status === 2 || item.status === 1) ? (
                    <UnreadIcon fill={Colors.LIGHT_GRAY} />
                  ) : null}
                  <Text style={styles.chatTime}>{formatDate(item.updated)}</Text>
                </View>
              </View>

              <View style={[styles.rowContainer, { flex: 1, gap: 6 }]}>
                <Text numberOfLines={2} style={styles.chatMessage}>
                  {item.short}
                </Text>

                {item.unread_count > 0 ? (
                  <View style={styles.unreadBadge}>
                    <Text style={styles.unreadText}>
                      {item.unread_count > 99 ? '99+' : item.unread_count}
                    </Text>
                  </View>
                ) : null}
              </View>
            </View>
          </View>
        </TouchableHighlight>
      </SwipeableRow>
    );
  };

  return (
    <PageWrapper style={{ flex: 1, marginLeft: 0, marginRight: 0, gap: 12 }}>
      <View style={styles.header}>
        <View style={{ width: 30 }} />
        <Text style={styles.title}>Messages</Text>
        <TouchableOpacity
          onPress={() => SheetManager.show('search-modal')}
          style={{ width: 30, alignItems: 'flex-end' }}
        >
          <AddChatIcon />
        </TouchableOpacity>
      </View>

      <View style={[{ paddingHorizontal: '4%' }]}>
        <Input
          inputMode={'search'}
          placeholder={'Search'}
          onChange={(text) => searchFilter(text)}
          value={search}
          icon={<SearchIcon fill={'#C8C8C8'} width={14} height={14} />}
          height={38}
        />
      </View>

      <HorizontalTabView
        index={index}
        setIndex={setIndex}
        routes={routes}
        tabBarStyle={{ paddingHorizontal: '4%' }}
        renderScene={({ route }: { route: any }) => (
          <FlashList
            viewabilityConfig={{
              waitForInteraction: true,
              itemVisiblePercentThreshold: 50,
              minimumViewTime: 1000
            }}
            data={filteredChats}
            renderItem={renderChatItem}
            keyExtractor={(item, index) => `${item.uid}-${index}`}
            estimatedItemSize={78}
            removeClippedSubviews={true}
          />
        )}
      />

      <SearchModal />
      <MoreModal />
    </PageWrapper>
  );
};

const styles = StyleSheet.create({
  title: { color: Colors.DARK_BLUE, fontFamily: 'redhat-700', fontSize: getFontSize(14) },
  header: {
    alignItems: 'center',
    paddingVertical: 16,
    flexDirection: 'row',
    justifyContent: 'space-between',
    marginLeft: '5%',
    marginRight: '5%'
  },
  chatItem: {
    flexDirection: 'row',
    paddingVertical: 12,
    backgroundColor: Colors.WHITE,
    borderBottomWidth: 1,
    borderBottomColor: Colors.FILL_LIGHT,
    gap: 8,
    paddingHorizontal: '4%'
  },
  avatar: {
    width: 54,
    height: 54,
    borderRadius: 27,
    borderWidth: 1,
    borderColor: Colors.FILL_LIGHT
  },
  rowContainer: {
    flexDirection: 'row',
    alignItems: 'center',
    justifyContent: 'space-between'
  },
  chatName: {
    flex: 1,
    fontFamily: 'montserrat-700',
    fontSize: getFontSize(14),
    color: Colors.DARK_BLUE
  },
  chatMessage: {
    flex: 1,
    fontSize: getFontSize(12),
    fontWeight: '600',
    color: Colors.DARK_BLUE,
    height: '100%'
  },
  chatTimeContainer: {
    justifyContent: 'center',
    alignItems: 'flex-end'
  },
  chatTime: {
    fontSize: getFontSize(12),
    fontWeight: '600',
    color: Colors.LIGHT_GRAY
  },
  unreadBadge: {
    backgroundColor: Colors.ORANGE,
    borderRadius: 9,
    paddingHorizontal: 6,
    alignItems: 'center',
    justifyContent: 'center',
    height: 18,
    minWidth: 18
  },
  unreadText: {
    color: Colors.WHITE,
    fontSize: getFontSize(11),
    fontFamily: 'montserrat-700'
  },
  swipeActions: {
    flexDirection: 'row',
    alignItems: 'center'
  },
  swipeButton: {
    paddingHorizontal: 20
  }
});

export default MessagesScreen;