import {
    StyleSheet,
    ScrollView,
    SafeAreaView,
    StatusBar,
    Image,
    TouchableOpacity
} from 'react-native';

import React, { useState, useEffect, useRef } from 'react';
import { router } from 'expo-router';
import type { AutocompleteDropdownRef } from 'react-native-autocomplete-dropdown'
import { AutocompleteDropdown } from 'react-native-autocomplete-dropdown';
import Modal from "react-native-modal";
import { useTranslation } from 'react-i18next';

import { ThemedText } from '@/src/components/themed/ThemedText';
import { ThemedView } from '@/src/components/themed/ThemedView';
import { Colors } from '@/src/constants/Colors';
import { useColorScheme } from '@/src/hooks/useColorScheme';
import { Request } from '@/src/services/request';
import List from '@/src/components/List';
import { store } from '@/src/store/store';
import { setViewCategory } from '@/src/store/dataStore';

export default function ExploreScreen() {
    const colorScheme = useColorScheme() ?? 'light';
    const { t } = useTranslation();
    const [ categories, setCategories ] = useState( [] );
    const [ types, setTypes ] = useState( [] );
    const [ activeCategory, setActiveCategory ] = useState<any | null>( null );
    const searchRef = useRef( null );
    const dropdownController = useRef<AutocompleteDropdownRef | null>( null )

    useEffect( () => {
        // Load categories
        Request.get( 'categories' ).then( (response) => {
            const list: any = [];

            response.forEach( (category: any, index: any) => {
                list.push( {
                    id: index,
                    title: category.name,
                    category: category,
                } )
            } );

            setCategories( list );
        } )

        // Load waste types
        Request.get( 'waste-types' ).then( (response) => {
            setTypes( response );
        } );
    }, [] );

    // View selected item in modal
    const selectItem = (item: any | null) => {
        if (item == null) {
            return;
        }

        // Clear select
        dropdownController.current?.clear()

        const { category } = item;
        setActiveCategory( category );
    }

    // View item in sub screen
    const viewItem = async (item: any) => {
        store.dispatch( setViewCategory( item ) );

        router.push( '/(explore)/category' );
    };

    return (
        <SafeAreaView style={{ flex: 1, backgroundColor: Colors[ colorScheme ].background }}>
            <ThemedView>
                <ScrollView style={styles.container}>
                    <ThemedView style={styles.titleContainer}>
                        <ThemedText type="title">{t( "what-where" )}</ThemedText>
                    </ThemedView>

                    <ThemedView style={styles.titleContainer}>
                        <ThemedText type="title" style={{ color: Colors[ colorScheme ].tint }}>{t( "what-why" )}</ThemedText>
                    </ThemedView>

                    <ThemedView style={styles.searchContainer}>
                        <ThemedText type="defaultSemiBold">{t( "what-separate" )}</ThemedText>
                        <AutocompleteDropdown
                            ref={searchRef}
                            controller={controller => {
                                dropdownController.current = controller
                            }}
                            textInputProps={{
                                placeholder: t( "what-separate" ),
                                autoCorrect: false,
                                autoCapitalize: 'none',
                            }}
                            clearOnFocus={false}
                            closeOnBlur={false}
                            closeOnSubmit={false}
                            emptyResultText={t( "nothing-found" )}
                            onSelectItem={selectItem}
                            dataSet={categories}
                            showClear={false}
                        />
                    </ThemedView>

                    <ThemedView style={styles.categoriesContainer}>
                        <ThemedText type="defaultSemiBold">{t( "choose-category" )}:</ThemedText>
                    </ThemedView>

                    <ThemedView style={styles.listContainer}>
                        <List
                            data={types}
                            renderItem={(item: any, index: any) => (
                                <TouchableOpacity style={styles.listItem} key={index} onPress={() => viewItem( item )}>
                                    {item.image != null ?
                                        (
                                            <Image source={{ uri: item.image }} style={styles.listImage}/>
                                        ) :
                                        (
                                            <ThemedView style={styles.listImage}/>
                                        )
                                    }
                                    <ThemedText type="defaultSemiBold">{item.name}</ThemedText>
                                </TouchableOpacity>
                            )}
                        />
                    </ThemedView>
                </ScrollView>
            </ThemedView>

            <Modal isVisible={activeCategory !== null} useNativeDriverForBackdrop={true}>
                <ThemedView style={{ ...styles.modalView, backgroundColor: Colors[ colorScheme ].background }}>
                    <ThemedText type="subtitle" style={{ marginBottom: 30, textAlign: 'center' }}>{activeCategory?.name}</ThemedText>

                    {activeCategory?.type &&
                        <ThemedView style={styles.modalType}>
                            {activeCategory?.type?.image &&
                                <Image source={{ uri: activeCategory?.type?.image }} style={styles.modalTypeImage}/>
                            }
                            <ThemedText type="defaultSemiBold">{activeCategory?.type?.name}</ThemedText>
                        </ThemedView>
                    }

                    <ThemedView style={{ alignItems: 'center' }}>
                        <ThemedText type="defaultSemiBold">{t( "description" )}:</ThemedText>
                        <ThemedText>{activeCategory?.description}</ThemedText>
                    </ThemedView>

                    <TouchableOpacity
                        onPress={() => setActiveCategory( null )}
                        style={{ ...styles.modalClose, backgroundColor: Colors[ colorScheme ].tint }}>
                        <ThemedText style={{ color: '#fff' }}>{t( "close" )}</ThemedText>
                    </TouchableOpacity>
                </ThemedView>
            </Modal>
        </SafeAreaView>
    );
}

const styles = StyleSheet.create( {
    container: {
        marginTop: StatusBar.currentHeight,
        padding: 25,
    },
    titleContainer: {
        flexDirection: 'row',
        alignItems: 'center',
        gap: 8,
        paddingBottom: 8,
    },
    searchContainer: {
        marginTop: 10,
    },
    categoriesContainer: {
        marginTop: 25,
    },
    listContainer: {
        marginTop: 20,
        paddingBottom: 50
    },
    listItem: {
        flex: 1,
        display: 'flex',
        gap: 8,
        flexDirection: 'row',
        alignItems: 'center',
        paddingBottom: 20,
        marginBottom: 20,
        borderBottomWidth: 1,
        borderBottomColor: '#f2f2f2',
    },
    listImage: {
        width: 30,
        height: 30,
        borderRadius: 5,
        marginRight: 8,
    },
    modalView: {
        margin: 20,
        borderRadius: 5,
        padding: 35,
        alignItems: 'center',
        textAlign: 'center',
    },
    modalType: {
        gap: 8,
        flexDirection: 'row',
        alignItems: 'center',
        paddingBottom: 10,
        marginBottom: 15,
    },
    modalTypeImage: {
        width: 40,
        height: 40,
        borderRadius: 5,
        marginRight: 8,
    },
    modalClose: {
        borderRadius: 5,
        paddingTop: 10,
        paddingBottom: 10,
        paddingLeft: 40,
        paddingRight: 40,
        marginTop: 30,
    },
} );