import React, { useEffect, useState, useRef } from 'react';
import {  BackHandler } from 'react-native';
import { useNavigation, NavigationProp, useFocusEffect } from '@react-navigation/native';
import { RootStackParamList } from '@/types';
import config from '../../components/data/config.json';
import { DB } from '@/components/lib/db';
import { cfg } from '@/components/lib/cfg';
import { ScrollView, View, Text, TouchableOpacity } from 'react-native';
import { GestureHandlerRootView, TextInput } from 'react-native-gesture-handler';
import { Ionicons } from '@expo/vector-icons';
import { FAB } from 'react-native-elements/dist/buttons/FAB';
import CustDetail from '@/components/pageComponent/customer';

const CustomerScreen = () => {
    const navigation = useNavigation<NavigationProp<RootStackParamList>>();
    const [search, setSearch] = useState('');
    const [dataJson, setDataJson] = useState<any>([]);
    const [cX, setCx] = useState(false)

    const showData = function(data:any){
        setDataJson(data);
    }

    const getData = async function (cond: string) {
        let data: any = await DB(`SELECT * FROM res_partner WHERE lower(name) LIKE '%${cond.toLowerCase()}%' ORDER BY id ASC`);
        setDataJson(data);
    };

    useEffect(() => {
        (async function () {
            getData('');
        })();
    }, []);

    useFocusEffect(
        React.useCallback(() => {
            const onBackPress = () => {
                if(cX){
                    setCx(false)
                }else{
                    navigation.navigate("home");
                }
                return true; // Prevent default behavior (exit app)
            };

            BackHandler.addEventListener('hardwareBackPress', onBackPress);
            navigation.setOptions({ headerLeft: () => null }); // Remove back button

            return () => {
                BackHandler.removeEventListener('hardwareBackPress', onBackPress);
            };
        }, [navigation, setCx, cX])
    );
    const [dataSend, setDataSend] = useState<any>({})

    const Action = {
        preeFABCustomer: async function (prop: any) {
            navigation.navigate('formcustomer');
        }
    };

    cfg.action['customer'] = function () {
        getData('');
    };

    const getDataShow = function (search='') {
        getData(search);
    };

    // Add a ref to store the timeout
    const searchTimeout = useRef<NodeJS.Timeout | null>(null);

    const handleSearchChange = (text: string) => {
        setSearch(text); // Update the search state
        if (searchTimeout.current) {
            clearTimeout(searchTimeout.current); // Clear previous timeout
        }
        searchTimeout.current = setTimeout(() => {
            changeSearch(text); // Call changeSearch after delay
        }, 300); // Adjust delay as needed (300ms here)
    };

    const changeSearch = (text: string) => {
        getData(text.trim() !== '' ? text : ''); // Fetch data based on the search text
    };

    const openMenuCustomer = async function(prop: any) {
        setDataSend({
            datacus: btoa(JSON.stringify([prop])),
            contactActive: prop?.email,
            contactActiveData: btoa(JSON.stringify(prop))
        })
        setCx(true);
    }

    function buatAlias(nama:any) {
        // Pisahkan nama menjadi kata-kata
        const kata = nama.split(' ');

        let alias;
        if (kata.length === 1) {
            // Jika nama hanya terdiri dari satu kata, ambil dua huruf pertama
            alias = kata[0].substring(0, 2).toUpperCase();
        } else {
            // Ambil huruf pertama dari kata pertama dan kedua
            alias = kata[0][0].toUpperCase() + kata[1][0].toUpperCase();
        }

        return alias;
    }

    return (
        <>
            {cX === true?<>
                <CustDetail act={getDataShow} search={search} show={showData} data={dataJson} send={dataSend} hidedata={setCx} />
            </>:<>
                <>
                    <GestureHandlerRootView>
                        <View style={{
                            height: 100,
                            backgroundColor: config.color.primary,
                            flexDirection: "row",
                            padding: 20,
                            alignItems: 'flex-end'
                        }}>
                            <TextInput
                                value={search}
                                onChangeText={handleSearchChange}
                                placeholder="search.."
                                style={{ paddingHorizontal: 16, borderRadius: 5, flex: 1, height: 40, backgroundColor: "white" }}
                            />
                            <Ionicons style={{ paddingVertical: 10, paddingHorizontal: 18 }} size={20} color={'white'} name='search' />
                        </View>
                        <ScrollView>
                            <View style={{padding:10}}>
                                {dataJson.map((s:any,i:any)=>
                                    <TouchableOpacity key={i} onPress={()=>{
                                        openMenuCustomer(s);
                                    }}>
                                            <View style={{
                                                padding:10
                                                , backgroundColor:'white'
                                                , flexDirection:'row'
                                                , marginBottom:10
                                                , borderRadius: 10
                                            }}>
                                                <View style={{width:60}}>
                                                    <View style={{
                                                        width:50
                                                        ,height:50
                                                        ,flexDirection:"row"
                                                        , alignItems:'center'
                                                        , justifyContent:'center'
                                                        , backgroundColor: config.color.primary
                                                        , borderRadius:50
                                                    }}>
                                                        <Text style={{
                                                            color:'white'
                                                            , fontWeight:600
                                                            , fontSize:18
                                                    }}>{buatAlias(s.name)}</Text>
                                                    </View>
                                                </View>
                                                <View style={{flex:1}}>
                                                    <Text style={{
                                                        fontSize:18,
                                                        fontWeight:'bold'
                                                    }}>{s.name}</Text>
                                                    <Text>{s.email}</Text>
                                                </View>
                                            </View>
                                    </TouchableOpacity>
                                )}
                            </View>
                        </ScrollView>
                        <FAB onPress={Action.preeFABCustomer} color={config.color.primary} icon={{ name: "add", color:"white" }} style={{ position: "absolute", bottom: 20, right: 20 }}></FAB>
                    </GestureHandlerRootView>
                </>
            </>}
        </>
    );
};

export default CustomerScreen;