import { h } from 'preact';
import { ExternalLink, Check } from 'react-feather';
import { useState } from 'preact/hooks';
import _ from 'lodash'

import { useSelector, useDispatch } from 'react-redux'
import { State } from './../store';

import http from '../http';

function OfferLine(offer) {
    const ws = useSelector((state: State) => state.ws);

    function setStatus(status) {
        ws.sendOfferStatusSet(offer.id, status);
    }

    const accepted = offer.status === 'Accepted';
    const classes = `${accepted ? 'accepted' : ''}`;
    const btnText = accepted
        ? offer.status
        : 'Accept';

    const negBtn = accepted
        ? <button onClick={() => setStatus('Pending')} class='neg'>Cancel</button>
        : <button onClick={() => setStatus('Declined')} class='neg'>Decline</button>;

    return (
        <div class="line">
            <div class='number'>${offer.total}</div>
            <div class='number'>{offer.condition}</div>
            <button onClick={() => setStatus('Accepted')} disabled={accepted} class={classes} >{btnText}</button>
            {negBtn}
        </div>
    )
}

function OfferPriceBtn(offer) {
    const ws = useSelector((state: State) => state.ws);
    const accepted = offer.status === 'Accepted';
    const confirmed = offer.status === 'Confirmed';

    function setStatus() {
        if (accepted) return ws.sendOfferStatusSet(offer.id, 'Pending')
        ws.sendOfferStatusSet(offer.id, 'Accepted');
    }

    const classes = `${accepted ? 'accepted' : ''} ${confirmed ? 'confirmed' : ''}`;
    const btnText = accepted
        ? offer.status
        : 'Accept';

    const title = accepted
        ? 'Click to cancel'
        : 'Click to accept this offer';

    return (
        <button disabled={confirmed} title={title} onClick={() => setStatus()} class={classes}>${offer.total} {offer.condition}</button>
    )
}

function OfferConditionSlider([condition, offers], i, groupId, rangeMin, rangeMax) {
    // const ws = useSelector((state: State) => state.ws);
    // const accepted = offer.status === 'Accepted';
    // const confirmed = offer.status === 'Confirmed';

    // function setStatus() {
    //     if (accepted) return ws.sendOfferStatusSet(offer.id, 'Pending')
    //     ws.sendOfferStatusSet(offer.id, 'Accepted');
    // }

    // const classes = `${accepted ? 'accepted' : ''} ${confirmed ? 'confirmed' : ''}`;
    // const btnText = accepted
    //     ? offer.status
    //     : 'Accept';

    // const title = accepted
    //     ? 'Click to cancel'
    //     : 'Click to accept this offer';

    // return (
    //     <button disabled={confirmed} title={title} onClick={() => setStatus()} class={classes}>${offer.total} {offer.condition}</button>
    // )

    const min = _.first(offers).total
    const max = _.last(offers).total
    // const step = min === max ? max : "any"
    const step = 'any'
    const id = `${groupId}-${i}`
    const markersId = `${id}-markers`
    const steps = offers.map(o => o.total)

    const [acceptedPrice, setAcceptedPrice] = useState(0)

    function onChange(target) {
        const highest = () => {
            return _.findLast(steps, s => target.value >= Number(s)) || 0
        }

        const v = highest()
        setAcceptedPrice(v)
        target.value = v
    }

    const acceptedPriceLabel = acceptedPrice ? `$${acceptedPrice}` : '-'

    return (
        <div key={id}>
            <label for={id}>{condition}</label><br />
            <label for={id}>{acceptedPriceLabel}</label><br />
            <input
                type="range"
                id={id}
                name={id}
                list={markersId}
                step={step}
                min={rangeMin}
                max={rangeMax}
                value={acceptedPrice}
                onChange={e => onChange((e.target as HTMLInputElement)) } />

            <datalist id={markersId}>
                {offers.map(o => <option value={o.total}></option>)}
            </datalist>
        </div>
    )
}


export default function OfferGroup(group, i) {
    const ws = useSelector((state: State) => state.ws);

    const format = group.details.formats[0].text ? `${group.details.formats[0].text} - ` : '';
    const descriptions = group.details.formats.map(f => f.descriptions.join(' ')).join(' ')
    const detailText = `${format} ${descriptions}`;

    const conditions = Object.entries(_.groupBy(group.offers, 'condition'))
    const rangeMin = 0
    const rangeMax = _.maxBy(group.offers, 'total').total

    return (
        <div class="offer" key={i} id={group.details.id}>
            <section>
                <h3>{group.details.artists_sort} - {group.details.title} <a href={group.details.uri} target="_blank" rel="noreferrer"><ExternalLink /></a></h3>
                <div class='alt-text details'>
                    {group.details.year} - {detailText}
                </div>
                <div class='alt-text details'>Status: {group.status}</div>
            </section>
            <img src={group.details.thumb} />
            <div>
                {conditions.map((c, i) => OfferConditionSlider(c, i, group.details.id, rangeMin, rangeMax))}
            </div>
        </div>
    )
}