import { CSSProperties, FormEventHandler, useEffect, useState } from 'react'
import { Form, Button } from 'react-bootstrap'
import { MapContainer, TileLayer } from 'react-leaflet'
import { latLng } from 'leaflet'
import { useNavigate } from 'react-router-dom'

import { MapClickHandler, LocationMarker, CardLayout, LocateButton } from '../components'
import { useAddAnnouncement } from '../hooks/api'
import { categories, categoryNames } from '../assets/category'
import { stations, lines, lineNames } from '../assets/metro'
import { fallbackError, gotResponse } from '../hooks/useFetch'
import { useOsmAddresses } from '../hooks/api'

const styles = {
    map: {
        width: '100%',
        height: 400,
    } as CSSProperties,
}

function AddPage() {
    const [addressPosition, setAddressPosition] = useState(latLng(59.972, 30.3227))

    const address = useOsmAddresses(addressPosition)

    const { handleAdd, addButton } = useAddAnnouncement()

    const navigate = useNavigate()

    const handleSubmit: FormEventHandler<HTMLFormElement> = (event) => {
        event.preventDefault()
        event.stopPropagation()

        const formData = new FormData(event.currentTarget)

        formData.append('latitude', addressPosition.lat.toString())
        formData.append('longtitude', addressPosition.lng.toString())
        formData.append('address', address.data || '') // if address.error
        formData.set('bestBy', new Date((formData.get('bestBy') as number | null) || 0).getTime().toString())

        handleAdd(formData)
    }

    useEffect(() => {
        if (addButton.children === 'Опубликовано') {
            navigate('/')
        }
    }, [addButton.children, navigate])

    return (
        <CardLayout text='Опубликовать объявление'>
            <Form onSubmit={handleSubmit}>
                <Form.Group className='mb-3' controlId='name'>
                    <Form.Label>Заголовок объявления</Form.Label>
                    <Form.Control type='text' required name='name' />
                </Form.Group>

                <Form.Group className='mb-3' controlId='category'>
                    <Form.Label>Категория</Form.Label>
                    <Form.Select required name='category'>
                        <option value='' hidden>
                            Выберите категорию
                        </option>
                        {categories.map(category =>
                            <option key={category} value={category}>{categoryNames[category]}</option>
                        )}
                    </Form.Select>
                </Form.Group>

                <Form.Group className='mb-3' controlId='bestBy'>
                    <Form.Label>Срок годности</Form.Label>
                    <Form.Control type='date' required name='bestBy' />
                </Form.Group>

                <Form.Group className='mb-3' controlId='address'>
                    <Form.Label>Адрес выдачи</Form.Label>
                    <div className='mb-3'>
                        <MapContainer
                            scrollWheelZoom={false}
                            style={styles.map}
                            center={addressPosition}
                            zoom={13}
                        >
                            <TileLayer
                                attribution='&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'
                                url='https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png'
                            />

                            <LocationMarker
                                address={gotResponse(address) ? fallbackError(address) : 'Загрузка...'}
                                position={addressPosition}
                                setPosition={setAddressPosition}
                            />

                            <LocateButton setPosition={setAddressPosition} />

                            <MapClickHandler
                                setPosition={setAddressPosition}
                            />
                        </MapContainer>
                    </div>
                    <p>Адрес: {gotResponse(address) ? fallbackError(address) : 'Загрузка...'}</p>
                </Form.Group>

                <Form.Group className='mb-3' controlId='description'>
                    <Form.Label>Описание</Form.Label>
                    <Form.Control
                        as='textarea'
                        name='description'
                        rows={3}
                        placeholder='Укажите свои контакты, а так же, когда вам будет удобно передать продукт'
                    />
                </Form.Group>

                <Form.Group className='mb-3' controlId='src'>
                    <Form.Label>Иллюстрация (фото или видео)</Form.Label>
                    <Form.Control
                        type='file'
                        name='src'
                        accept='video/mp4,video/mkv, video/x-m4v,video/*, image/*'
                        capture='environment'
                    />
                </Form.Group>

                <Form.Group className='mb-3' controlId='metro'>
                    <Form.Label>
                        Станция метро
                    </Form.Label>
                    <Form.Select name='metro'>
                        <option value=''>
                            Укажите ближайщую станцию метро
                        </option>
                        {lines.map(
                            line =>
                                <optgroup key={line} label={lineNames[line]}>
                                    {Array.from(stations[line]).map(metro =>
                                        <option key={metro} value={metro}>{metro}</option>
                                    )}
                                </optgroup>
                        )}
                    </Form.Select>
                </Form.Group>

                <Button variant='success' type='submit' {...addButton} />
            </Form>
        </CardLayout>
    )
}

export default AddPage
