import {
    View,
    Text,
    ScrollView,
    Pressable,
    StyleSheet,
    Image,
    Dimensions,
    ActivityIndicator
} from 'react-native';
import { SafeAreaView } from 'react-native-safe-area-context';
import { router } from 'expo-router';
import NormalButton from '../global/normal_button';
import {
    CheckMarkLogoSvg,
    DirectionLogoSvg,
    PreviousPageBlackSvg
} from '../global/SVG';
import { ChargingStationTabView } from '../global/chargingStationTabView';
import ChooseCarForChargingRow from '../global/chooseCarForChargingRow';
import { useEffect, useState } from 'react';
import DropdownSelect from '../global/dropdown_select';
import { chargeStationService } from '../../service/chargeStationService';

const dummyDataChooseCarForCharging = [
    {
        imageUrl: require('../../assets/car1.png'),
        VehicleName: 'TESLA - Model 3',
        isDefault: true
    },
    { VehicleName: 'TESLA - Model Y', isDefault: false },
    {
        imageUrl: require('../../assets/car1.png'),
        VehicleName: 'TESLA - Model X',
        isDefault: false
    },
    { VehicleName: 'TESLA - Model 3', isDefault: false }
];

interface AccordionItemProps {
    title: string;
    children: React.ReactNode;
    isOpen: boolean;
    onToggle: () => void;
    isSelected: boolean;
}

const AccordionItem: React.FC<AccordionItemProps> = ({
    title,
    children,
    isOpen,
    onToggle,
    isSelected
}) => (
    <View className={`${isSelected ? 'bg-[#e7f5f8]' : 'bg-white'}`}>
        <View className="mx-[5%]">
            <Pressable onPress={onToggle}>
                <Text
                    className={` pt-2 text-lg ${
                        isSelected ? 'text-[#222222]' : 'text-[#888888] '
                    }}`}
                >
                    {title}
                </Text>
            </Pressable>
            {isOpen && <View>{children}</View>}
        </View>
    </View>
);

const MakingBookingPageComponent = () => {
    const [openDrawer, setOpenDrawer] = useState<number | null>(0);
    const [selectedTime, setSelectedTime] = useState<string>('');
    const [availableTimeSlots, setAvailableTimeSlots] = useState<string[]>([]);
    const [selectedDrawer, setSelectedDrawer] = useState<number>(0);
    const [isLoading, setIsLoading] = useState(true);
    const [selectedDate, setSelectedDate] = useState<string>('');
    const toggleDrawer = (index: number) => {
        setOpenDrawer(openDrawer === index ? null : index);
        setSelectedDrawer(index);
    };

    const [availableDate, setAvailableDate] = useState<string[]>([]);
    useEffect(() => {
        const fetchingAvailableDates = async () => {
            const fetchedDates = await chargeStationService.fetchAvailableDates(
                '2405311022116801000'
            );
            setAvailableDate(fetchedDates);
        };
        fetchingAvailableDates();
    }, []);

    useEffect(() => {
        const fetchingAvailableTimeSlots = async () => {
            setIsLoading(true);
            try {
                const fetchedTimeSlots =
                    await chargeStationService.fetchAvailableTimeSlots(
                        '2405311022116801000',
                        selectedDate
                    );
                setAvailableTimeSlots(fetchedTimeSlots);
                console.log(`I AM TIMESLOT ${fetchedTimeSlots}`);
            } catch (error) {
                console.error('Error fetching time slots:', error);
            } finally {
                setIsLoading(false);
            }
        };
        if (selectedDate) {
            fetchingAvailableTimeSlots();
        }
    }, [selectedDate]);

    const timeData = [
        '14:00',
        '14:15',
        '14:30',
        '14:45',
        '15:00',
        '15:15',
        '15:30',
        '15:45',
        '16:00',
        '16:15',
        '16:30',
        '16:45',
        '17:00',
        '17:15',
        '17:30',
        '17:45'
    ];
    const dateData = [
        '今天',
        '3/15',
        '3/16',
        '3/17',
        '3/18',
        '3/19',
        '3/20',
        '3/21'
    ];

    const [uiState, setUiState] = useState({
        isCarSelected: false,
        isChargingPlanOpen: false,
        isDateOpen: false,
        isCharigingGunOpen: false
    });
    const [selectedChargingGun, setSelectedChargingGun] = useState('');
    const [chargingBasedOnWatt, setChargingBasedOnWatt] = useState(false);
    const [stopChargingUponBatteryFull, setStopChargingUponBatteryFull] =
        useState(false);
    const [selectedCar, setSelectedCar] = useState('');
    const [selectedDuration, setSelectedDuration] = useState('');
    const { width: screenWidth, height: screenHeight } =
        Dimensions.get('window');

    const layoutWidth = screenWidth;
    const layoutHeight = screenHeight * 0.4;

    return (
        <SafeAreaView
            style={{
                flex: 1,
                backgroundColor: 'white'
            }}
            edges={['right', 'top', 'left']}
        >
            <ScrollView
                className="flex-1 bg-white"
                showsVerticalScrollIndicator={false}
            >
                <View className="pb-4 ">
                    <View className="ml-[5%] pt-8">
                        <Pressable
                            style={{ alignSelf: 'flex-start' }}
                            onPress={() => {
                                if (router.canGoBack()) {
                                    router.back();
                                } else {
                                    router.replace('./');
                                }
                            }}
                        >
                            <PreviousPageBlackSvg />
                        </Pressable>
                        <Text className="text-3xl mt-8">上環街市充電站</Text>
                        <View className="flex-column">
                            <View className="flex-row justify-between items-center mr-[5%]">
                                <Text
                                    className="text-base"
                                    style={styles.grayColor}
                                >
                                    香港上環皇后大道中345號
                                </Text>
                                <NormalButton
                                    title={
                                        <View className="flex-row items-center justify-center text-center space-x-1">
                                            <DirectionLogoSvg />
                                            <Text className="text-base">
                                                路線
                                            </Text>
                                        </View>
                                    }
                                    onPress={() => console.log('路線')}
                                    extendedStyle={{
                                        backgroundColor: '#E3F2F8',
                                        borderRadius: 61,
                                        paddingHorizontal: 20,
                                        paddingVertical: 8
                                    }}
                                />
                            </View>
                            <View className="flex-row space-x-2 items-center">
                                <CheckMarkLogoSvg />
                                <Text>Walk-In</Text>
                                <Text>400米</Text>
                            </View>
                        </View>
                    </View>
                </View>
                <View>
                    {selectedCar !== '' ? (
                        <>
                            <Pressable
                                onPress={() => {
                                    setSelectedCar('');
                                    setOpenDrawer(0);
                                    setSelectedDrawer(0);
                                    setSelectedDuration('');
                                    setChargingBasedOnWatt(false);
                                    setStopChargingUponBatteryFull(false);
                                    setSelectedDate('');
                                    setSelectedTime('');
                                }}
                            >
                                <View className="mx-[5%]">
                                    <View className="flex-row items-center pt-4">
                                        <Text className="text-lg pr-2 text-[#34667c]">
                                            選擇充電車輛
                                        </Text>
                                        <CheckMarkLogoSvg />
                                    </View>
                                    <Text className="text-lg pb-4">
                                        {selectedCar}
                                    </Text>
                                </View>
                            </Pressable>
                        </>
                    ) : (
                        <AccordionItem
                            title="選擇充電車輪"
                            isOpen={openDrawer === 0}
                            onToggle={() => toggleDrawer(0)}
                            isSelected={selectedDrawer === 0}
                        >
                            <ScrollView
                                horizontal={true}
                                contentContainerStyle={{
                                    alignItems: 'center',
                                    flexDirection: 'row',
                                    marginVertical: 8
                                }}
                                className="space-x-2 "
                            >
                                {dummyDataChooseCarForCharging.map(
                                    (car, index) => (
                                        <ChooseCarForChargingRow
                                            onPress={() => {
                                                setSelectedCar(car.VehicleName);
                                                setSelectedDrawer(1);
                                                setOpenDrawer(1);
                                            }}
                                            imageUrl={car.imageUrl}
                                            key={`${car.VehicleName}+${index}`}
                                            VehicleName={car.VehicleName}
                                            isDefault={car.isDefault}
                                        />
                                    )
                                )}
                            </ScrollView>
                        </AccordionItem>
                    )}

                    {stopChargingUponBatteryFull === true ||
                    selectedDuration !== '' ? (
                        <Pressable
                            onPress={() => {
                                setSelectedDuration('');
                                setChargingBasedOnWatt(false);
                                setStopChargingUponBatteryFull(false);
                                setSelectedTime('');
                                setSelectedDate('');
                                setOpenDrawer(1);
                                setSelectedDrawer(1);
                            }}
                        >
                            <View className="mx-[5%] ">
                                <View className="flex-row items-center pt-4">
                                    <Text className="text-lg pr-2 text-[#34667c]">
                                        選擇充電方案
                                    </Text>
                                    <CheckMarkLogoSvg />
                                </View>
                                <Text className="text-lg pb-4">
                                    {selectedDuration !== ''
                                        ? `按每道電 - ${selectedDuration}`
                                        : '充滿停機'}
                                </Text>
                            </View>
                        </Pressable>
                    ) : (
                        <AccordionItem
                            title="選擇充電方案"
                            isOpen={openDrawer === 1}
                            onToggle={() => {
                                if (selectedCar !== '') {
                                    toggleDrawer(1);
                                }
                            }}
                            isSelected={selectedDrawer === 1}
                        >
                            <View className="flex-row justify-between mt-2 mb-3">
                                <Pressable
                                    className={`border rounded-lg border-[#34667c] w-[47%] items-center bg-white ${
                                        chargingBasedOnWatt
                                            ? 'bg-[#34667c] '
                                            : ''
                                    }`}
                                    onPress={() => {
                                        setChargingBasedOnWatt(
                                            !chargingBasedOnWatt
                                        );
                                        setStopChargingUponBatteryFull(false);
                                    }}
                                >
                                    <Text
                                        className={`text-base p-2 text-[#34667c] ${
                                            chargingBasedOnWatt
                                                ? ' text-white'
                                                : 'text-[#34667c]'
                                        }`}
                                    >
                                        按每度電
                                    </Text>
                                </Pressable>
                                <Pressable
                                    onPress={() => {
                                        setStopChargingUponBatteryFull(
                                            !stopChargingUponBatteryFull
                                        );
                                        setChargingBasedOnWatt(false);
                                        setSelectedDrawer(2);
                                        setOpenDrawer(2);
                                    }}
                                    className={`border rounded-lg border-[#34667c] w-[47%] items-center bg-white ${
                                        stopChargingUponBatteryFull
                                            ? ' bg-[#34667c]'
                                            : ''
                                    }`}
                                >
                                    <Text
                                        className={`text-base p-2 text-[#34667c] ${
                                            stopChargingUponBatteryFull
                                                ? ' text-white'
                                                : 'text-[#34667c]'
                                        }`}
                                    >
                                        充滿停機
                                    </Text>
                                </Pressable>
                            </View>

                            {chargingBasedOnWatt === true && (
                                <View className="flex-row w-full justify-between mb-3">
                                    {['30分鐘', '45分鐘', '60分鐘', '其他'].map(
                                        (duration) => (
                                            <Pressable
                                                key={duration}
                                                className={`${
                                                    selectedDuration ===
                                                    duration
                                                        ? 'bg-[#34667c] '
                                                        : 'bg-white'
                                                } border border-[#34667c]  rounded-lg w-[22%] items-center`}
                                                onPress={() => {
                                                    setSelectedDuration(
                                                        duration
                                                    );
                                                    setOpenDrawer(2);
                                                    setSelectedDrawer(2);
                                                }}
                                            >
                                                <Text
                                                    className={`text-base p-2 ${
                                                        selectedDuration ===
                                                        duration
                                                            ? 'text-white'
                                                            : 'text-[#34667c]'
                                                    } `}
                                                >
                                                    {duration}
                                                </Text>
                                            </Pressable>
                                        )
                                    )}
                                </View>
                            )}
                        </AccordionItem>
                    )}
                    {selectedTime !== '' ? (
                        <Pressable
                            onPress={() => {
                                setOpenDrawer(2);
                                setSelectedDrawer(2);
                                setSelectedDate('');
                                setSelectedTime('');
                            }}
                        >
                            <View className="mx-[5%] ">
                                <View className="flex-row items-center pt-4">
                                    <Text className="text-lg pr-2 text-[#34667c]">
                                        選擇日期
                                    </Text>
                                    <CheckMarkLogoSvg />
                                </View>
                                <Text className="text-lg pb-4">
                                    {selectedDate} - {selectedTime}
                                </Text>
                            </View>
                        </Pressable>
                    ) : (
                        <AccordionItem
                            title="選擇日期 (月/日)"
                            isOpen={openDrawer === 2}
                            onToggle={() => {
                                if (
                                    stopChargingUponBatteryFull !== false ||
                                    selectedDuration !== ''
                                ) {
                                    toggleDrawer(2);
                                }
                            }}
                            isSelected={selectedDrawer === 2}
                        >
                            <View className="flex-row w-full flex-wrap mb-1 ">
                                {availableDate.map((date) => (
                                    <Pressable
                                        key={date}
                                        className={`${
                                            selectedDate === date
                                                ? 'bg-[#34667c] '
                                                : 'bg-white'
                                        } border border-[#34667c]  rounded-lg w-[22%] items-center mt-1 mr-1 mb-1`}
                                        onPress={() => {
                                            setSelectedDate(date);
                                        }}
                                    >
                                        <Text
                                            className={`text-base p-2  ${
                                                selectedDate === date
                                                    ? 'text-white'
                                                    : 'text-[#34667c]'
                                            } `}
                                        >
                                            {date}
                                        </Text>
                                    </Pressable>
                                ))}
                            </View>

                            {selectedDate !== '' && (
                                <>
                                    <Text className="text-lg pr-2 ">
                                        選擇時間
                                    </Text>
                                    {isLoading ? (
                                        <View className="flex-1 mb-2">
                                            <ActivityIndicator />
                                        </View>
                                    ) : (
                                        <View className="flex-row w-full justify-between mb-3 flex-wrap my-2 ">
                                            {availableTimeSlots.map((time) => (
                                                <Pressable
                                                    key={time}
                                                    className={`${
                                                        selectedTime === time
                                                            ? 'bg-[#34667c] '
                                                            : 'bg-white'
                                                    } border border-[#34667c]  rounded-lg w-[22%] items-center mb-2`}
                                                    onPress={() => {
                                                        setSelectedTime(time);
                                                        setOpenDrawer(3);
                                                        setSelectedDrawer(3);
                                                    }}
                                                >
                                                    <Text
                                                        className={`text-base p-2  ${
                                                            selectedTime ===
                                                            time
                                                                ? 'text-white'
                                                                : 'text-[#34667c]'
                                                        } `}
                                                    >
                                                        {time}
                                                    </Text>
                                                </Pressable>
                                            ))}
                                        </View>
                                    )}
                                </>
                            )}
                        </AccordionItem>
                    )}
                    <View className="">
                        <AccordionItem
                            title="選擇充電座"
                            isOpen={openDrawer === 3}
                            onToggle={() => {
                                if (selectedTime) {
                                    toggleDrawer(3);
                                }
                            }}
                            isSelected={selectedDrawer === 3}
                        >
                            <View className="">
                                <DropdownSelect
                                    dropdownOptions={[
                                        { label: '1', value: '1' },
                                        { label: '2', value: '2' }
                                    ]}
                                    placeholder={'選擇充電座號碼'}
                                    onSelect={(value) => {
                                        setSelectedChargingGun(value);
                                        router.push('/bookingConfirmationPage');
                                    }}
                                    extendedStyle={{
                                        borderColor: '#34667c',
                                        marginTop: 4
                                    }}
                                />

                                <Image
                                    style={{
                                        width: layoutWidth * 0.97,
                                        height: layoutHeight
                                    }}
                                    resizeMode="contain"
                                    source={require('../../assets/ChargeStationLayout.png')}
                                />
                            </View>
                        </AccordionItem>
                    </View>
                </View>

                <View className="mx-[5%] flex-1">
                    <View
                        className="flex-row border-slate-300 mt-3 mb-6 rounded-2xl flex-1"
                        style={{ borderWidth: 1 }}
                    >
                        <View className="flex-1 m-4">
                            <View className="flex-1 flex-row ">
                                <View className=" flex-1 flex-column  justify-between">
                                    <Text
                                        className="text-xl "
                                        style={styles.text}
                                    >
                                        收費
                                    </Text>

                                    <View className="flex-row items-center space-x-2">
                                        <Text className="text-3xl text-[#02677D]">
                                            $20
                                        </Text>
                                        <Text style={styles.text}>
                                            每15分鐘
                                        </Text>
                                    </View>
                                </View>
                                <View className="items-center justify-center">
                                    <View className="w-[1px] h-[60%] bg-[#CCCCCC]" />
                                </View>
                                <View className="flex-1 flex-column ">
                                    <View className="flex-1"></View>
                                    <View className="flex-row items-center ml-4 space-x-2 ">
                                        <Text className="text-3xl text-[#02677D]">
                                            $3.5
                                        </Text>
                                        <Text style={styles.text}>每度電</Text>
                                    </View>
                                </View>
                            </View>
                        </View>
                    </View>

                    <Text className="text-xl pb-2 " style={styles.text}>
                        充電站資訊
                    </Text>
                    <View className="h-[250px]">
                        <ChargingStationTabView titles={['充電插頭', '其他']} />
                    </View>
                </View>
            </ScrollView>
        </SafeAreaView>
    );
};
export default MakingBookingPageComponent;

const styles = StyleSheet.create({
    grayColor: {
        color: '#888888'
    },
    topLeftTriangle: {
        width: 0,
        height: 0,
        borderLeftWidth: 50,
        borderBottomWidth: 50,
        borderLeftColor: '#02677D',
        borderBottomColor: 'transparent',
        position: 'absolute',
        top: 0,
        left: 0
    },
    text: {
        fontWeight: 300,
        color: '#000000'
    }
});