import { FormEventHandler, useEffect, useState } from "react"
import { Form, Button, Card } from "react-bootstrap"
import { MapContainer, TileLayer } from 'react-leaflet'
import { latLng } from "leaflet"

import { ClickHandler, LocationMarker, TrashboxMarkers } from "../components"
import { useAddAnnouncement, useTrashboxes } from "../hooks/api"

import { categoryNames } from "../assets/category"
import { stations, lines, lineNames } from "../assets/metro"
import { isObject } from "../utils/types"

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

    const trashboxes = useTrashboxes(addressPosition)
    const [selectedTrashbox, setSelectedTrashbox] = useState({ index: -1, category: '' })

    useEffect(() => {
        void (async () => {
            try {
                const res = await fetch(location.protocol + "//nominatim.openstreetmap.org/search?format=json&q=" + address)

                const fetchData: unknown = await res.json()

                console.log("f", fetchData)

            } catch (err) {
                console.error(err)
            }
        })()
    }, [address])

    useEffect(() => {
        void (async () => {
            try {
                const res = await fetch(`${location.protocol}//nominatim.openstreetmap.org/reverse?format=json&accept-language=ru&lat=${addressPosition.lat}&lon=${addressPosition.lng}`)

                const fetchData: unknown = await res.json()

                if (!isObject<{ display_name: string }>(fetchData, { "display_name": "string" })) {
                    throw new Error("Malformed server response")
                }

                setAddress(fetchData.display_name)

            } catch (err) {
                console.error(err)
            }
        })()
    }, [addressPosition])

    const { doAdd, status } = useAddAnnouncement()

    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)
        formData.set("bestBy", new Date((formData.get("bestBy") as number | null) || 0).getTime().toString())

        void doAdd(formData)
    }

    return (
        <Card className="m-4" style={{ height: 'calc(100vh - 3rem)' }}>
            <Card.Body style={{ overflowY: "auto" }} >
                <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>
                            {Array.from(categoryNames).map(
                                ([category, categoryName]) =>
                                    <option key={category} value={category}>{categoryName}</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={{ width: "100%", height: 400 }}
                                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={address}
                                    position={addressPosition}
                                    setPosition={setAddressPosition}
                                />
                                <ClickHandler
                                    setPosition={setAddressPosition}
                                />
                            </MapContainer>
                        </div>
                        <p>Адрес: {address}</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>

                    <Form.Group className="mb-3" controlId="password">
                        <Form.Label>Пункт сбора мусора</Form.Label>
                        <div className="mb-3">
                            {trashboxes.loading
                                ? (
                                    <div style={{ height: 400 }}>
                                        <p>Загрузка...</p>
                                    </div>
                                ) : (
                                    trashboxes.error ? (
                                        <p
                                            style={{ height: 400 }}
                                            className="text-danger"
                                        >{trashboxes.error}</p>
                                    ) : (
                                        <MapContainer
                                            scrollWheelZoom={false}
                                            style={{ width: "100%", height: 400 }}
                                            center={addressPosition}
                                            zoom={13}
                                            className=""
                                        >
                                            <TileLayer
                                                attribution='&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'
                                                url="https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png"
                                            />
                                            <TrashboxMarkers
                                                trashboxes={trashboxes.data}
                                                selectTrashbox={setSelectedTrashbox}
                                            />
                                        </MapContainer>
                                    )
                                )
                            }
                        </div>
                        {selectedTrashbox.index > -1 ? (
                            <p>Выбран пункт сбора мусора на {
                                trashboxes.data[selectedTrashbox.index].Address
                            } с категорией {selectedTrashbox.category}</p>
                        ) : (
                            <p>Выберите пунк сбора мусора и категорию</p>
                        )}
                    </Form.Group>

                    <Button variant="success" type="submit">
                        {status}
                    </Button>
                </Form>
            </Card.Body>
        </Card>
    )
}

export default AddPage